47 files changed, 1669 insertions(+), 0 deletions(-)

A .gitignore
A LICENSE
A README.md
A anim_coins/anim_coins.nim
A anim_coins/coin.png
A anim_coins/coin.s
A anim_coins/config.nims
A anim_sprite/anim_sprite.nim
A anim_sprite/config.nims
A anim_sprite/twiggy.png
A anim_sprite/twiggy.s
A config.nims
A goodboy_gallery/audio.nims
A goodboy_gallery/backgrounds.nims
A goodboy_gallery/backgrounds/dark_clouds.png
A goodboy_gallery/config.nims
A goodboy_gallery/graphics.nims
A goodboy_gallery/graphics/barrier.png
A goodboy_gallery/graphics/breakable.png
A goodboy_gallery/graphics/bullet.png
A goodboy_gallery/graphics/gem.png
A goodboy_gallery/graphics/muzzle.png
A goodboy_gallery/graphics/player.png
A goodboy_gallery/graphics/sacrificed_items.png
A goodboy_gallery/graphics/shield.png
A goodboy_gallery/modules/subway.xm
A goodboy_gallery/samples/blocked.wav
A goodboy_gallery/samples/changed.wav
A goodboy_gallery/source/audio.nim
A goodboy_gallery/source/goodboy_gallery.nim
A goodboy_gallery/source/simple_anim.nim
A hello_world/config.nims
A hello_world/hello_world.nim
A move_sprite/config.nims
A move_sprite/move_sprite.nim
A move_sprite/ship.img.bin
A move_sprite/ship.pal.bin
A move_sprite/ship.png
A mystify/config.nims
A mystify/mystify.nim
A play_music/audio.nims
A play_music/audio/shoot.wav
A play_music/audio/spacecat.xm
A play_music/config.nims
A play_music/play_music.nim
A test_sram/config.nims
A test_sram/test_sram.nim

@@ 1,13 @@
+.vscode/
+.sync/
+wip/
+output/
+build/
+nimcache/
+*.elf
+*.elf.map
+*.gba
+*.sav
+*.DS_Store
+*.out
+*.exe

@@ 1,17 @@
+Copyright (C) 2020-2022 Jeremy Clarke
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.

@@ 1,13 @@
+These are the examples for the [Natu](https://natu.exelo.tl/) Game Boy Advance development toolkit.
+
+## Building
+
+To build these examples, first install Natu by following the instructions on the website.
+
+Then:
+
+```sh
+$ git clone https://git.sr.ht/~exelotl/natu-examples
+$ cd natu-examples
+$ nim build_examples
+```

@@ 1,124 @@
+## Animated Coins Example
+## ======================
+## This example demonstrates another technique for animated sprites.
+## - All frames of animation are copied into VRAM.
+## - Each object's tile ID is set to the appropriate tile in VRAM for its current frame of animation.
+##
+## This can be great when you have many sprites of the same kind onscreen at once,
+## provided your spritesheet has relatively few frames.
+##
+## It's also light on CPU usage compared to the streaming approach from the `anim_sprite` example.
+##
+## Coin sprite by GrafxKid: https://opengameart.org/users/grafxkid
+## Image data produced via grit:
+## ::
+##   grit coin.png -gB4 -pn16
+##
+
+import natu/[video, bios, irq, math, utils]
+
+{.compile: "coin.s".}
+var coinTiles {.importc: "coinTiles".}: array[128, uint32]
+var coinPal {.importc: "coinPal".}: array[16, uint16]
+
+const coinAnimFrames = 0..3
+const coinNumTiles = 2*2
+
+# Memory locations used by coin sprites:
+# (in a real project these should come from allocators of some kind)
+const tid = 0  # base tile in object VRAM
+const pal = 0  # palette slot
+
+type
+  Coin = object
+    ## Each coin has a position, speed, and some animation counters.
+    ## To give the coins a variety of speeds, we use fixed-point arithmetic.
+    pos: Vec2f
+    fallSpeed: Fixed
+    animFrame: int
+    animTimer: int
+    animSpeed: int
+
+proc init(c: var Coin) =
+  ## Set up a coin object. All properties are randomized.
+  c.pos = vec2f(
+    fp(rand(0, 224)),
+    fp(rand(0, 160))
+  )
+  c.fallSpeed = rand(200, 300).Fixed
+  c.animFrame = rand(coinAnimFrames.a, coinAnimFrames.b+1)
+  c.animSpeed = rand(4, 8)
+  c.animTimer = rand(1, c.animSpeed+1)
+
+proc update(c: var Coin) =
+  
+  # advance coin animation timer/frame
+  dec c.animTimer
+  if c.animTimer <= 0:
+    c.animTimer = c.animSpeed
+    inc c.animFrame
+    if c.animFrame > coinAnimFrames.b:
+      c.animFrame = coinAnimFrames.a
+  
+  # move coin vertically, wrap at bottom of screen
+  c.pos.y += c.fallSpeed
+  if c.pos.y > fp(160):
+    c.pos.y = fp(-16)
+    c.pos.x = fp(rand(0, 224))
+
+
+proc draw(c: var Coin, oid: int) =
+  # apply attributes to sprite in OAM
+  # note that we point to a different tile in VRAM depending on which anim frame we are on.
+  objMem[oid].init:
+    pos = vec2i(c.pos)
+    size = s16x16
+    tid = tid + c.animFrame * coinNumTiles
+    pal = pal
+
+
+var coins {.noinit.}: array[40, Coin]
+
+
+proc main() =
+  
+  irq.enable(iiVBlank)
+  
+  # enable sprites with 1d mapping
+  dispcnt.init:
+    obj = true
+    obj1d = true
+  
+  # copy palette into object PAL RAM
+  memcpy16(addr objPalMem[pal], addr coinPal, coinPal.len)
+  
+  # copy all frames into object VRAM
+  memcpy32(addr objTileMem[tid], addr coinTiles, coinTiles.len)
+  
+  # initialize coins
+  for coin in mitems(coins):
+    coin.init()
+  
+  while true:
+    
+    # update the positions and frames of all coins
+    for coin in mitems(coins):
+      coin.update()
+    
+    VBlankIntrWait()
+    
+    # sprite counter (object id)
+    var oid = 0
+    
+    # draw all coins, each call to draw also increments the sprite counter
+    for coin in mitems(coins):
+      coin.draw(oid)
+      inc oid
+    
+    # hide remaining sprites
+    while oid < objMem.len:
+      objMem[oid].hide()
+      inc oid
+  
+
+main()

@@ 1,48 @@
+
+@{{BLOCK(coin)
+
+@=======================================================================
+@
+@	coin, 16x64@4, 
+@	+ palette 16 entries, not compressed
+@	+ 16 tiles not compressed
+@	Total size: 32 + 512 = 544
+@
+@	Time-stamp: 2020-01-14, 12:34:26
+@	Exported by Cearn's GBA Image Transmogrifier, v0.8.15
+@	( http://www.coranac.com/projects/#grit )
+@
+@=======================================================================
+
+	.section .rodata
+	.align	2
+	.global coinTiles		@ 512 unsigned chars
+	.hidden coinTiles
+coinTiles:
+	.word 0x11100000,0x22211000,0x22222100,0x33322210,0x44434210,0x44443441,0x44443441,0x44443441
+	.word 0x00000111,0x00011222,0x00122222,0x01222333,0x01243444,0x14434444,0x14434444,0x14434444
+	.word 0x44443441,0x44443441,0x44444431,0x44423310,0x22233310,0x33333100,0x33311000,0x11100000
+	.word 0x14434444,0x14434444,0x13444444,0x01332444,0x01333222,0x00133333,0x00011333,0x00000111
+	.word 0x11000000,0x22100000,0x22210000,0x44210000,0x24421000,0x22421000,0x22421000,0x22421000
+	.word 0x00000011,0x00000122,0x00001222,0x00001242,0x00014442,0x00014442,0x00013442,0x00013442
+	.word 0x22421000,0x22421000,0x22421000,0x24241000,0x22410000,0x33310000,0x33100000,0x11000000
+	.word 0x00013442,0x00013342,0x00013342,0x00013342,0x00001334,0x00001333,0x00000133,0x00000011
+
+	.word 0x10000000,0x21000000,0x21000000,0x21000000,0x41000000,0x41000000,0x41000000,0x41000000
+	.word 0x00000001,0x00000012,0x00000012,0x00000012,0x00000014,0x00000014,0x00000013,0x00000013
+	.word 0x41000000,0x31000000,0x31000000,0x31000000,0x31000000,0x31000000,0x31000000,0x10000000
+	.word 0x00000013,0x00000013,0x00000013,0x00000013,0x00000013,0x00000013,0x00000013,0x00000001
+	.word 0x11000000,0x22100000,0x22210000,0x42210000,0x34221000,0x34221000,0x34221000,0x34421000
+	.word 0x00000011,0x00000142,0x00001444,0x00001333,0x00013333,0x00013333,0x00013433,0x00013433
+	.word 0x34421000,0x34421000,0x34441000,0x34441000,0x33410000,0x33310000,0x33100000,0x11000000
+	.word 0x00013433,0x00013433,0x00013433,0x00013343,0x00001333,0x00001333,0x00000133,0x00000011
+
+	.section .rodata
+	.align	2
+	.global coinPal		@ 32 unsigned chars
+	.hidden coinPal
+coinPal:
+	.hword 0x0000,0x0842,0x77BE,0x0DBD,0x1EFE,0x0000,0x0000,0x0000
+	.hword 0x0421,0x0421,0x0421,0x0421,0x0421,0x0421,0x0421,0x0421
+
+@}}BLOCK(coin)

@@ 1,31 @@
+import os, strutils
+import natu/config
+
+const main = "anim_coins.nim"         # path to project file
+const name = splitFile(main).name      # name of ROM
+
+put "natu.gameTitle", "ANIMCOINS"     # max 12 chars, uppercase
+put "natu.gameCode", "2NTP"            # 4 chars, see GBATEK for info
+
+if projectPath() == thisDir() / main:
+  # This runs only when compiling the project file:
+  gbaCfg()                             # set C compiler + linker options for GBA target
+  switch "os", "standalone"
+  switch "gc", "none"
+  switch "checks", "off"               # toggle assertions, bounds checking, etc.
+  switch "path", projectDir()          # allow imports relative to the main file
+  switch "header"                      # output "{project}.h"
+  switch "nimcache", "nimcache"        # output C sources to local directory
+  switch "cincludes", nimcacheDir()    # allow external C files to include "{project}.h"
+
+task build, "builds the GBA rom":
+  let args = commandLineParams()[1..^1].join(" ")
+  selfExec "c " & args & " -o:" & name & ".elf " & thisDir() / main
+  gbaStrip name & ".elf", name & ".gba"
+  gbaFix name & ".gba"
+
+task clean, "removes build files":
+  rmDir "nimcache"
+  rmFile name & ".gba"
+  rmFile name & ".elf"
+  rmFile name & ".elf.map"

@@ 1,154 @@
+## Animated Sprite Example
+## =======================
+## This example demonstrates a technique for animated sprites on the GBA:
+## Make sure you're comfortable with the `move_sprite` example before tackling this!
+##
+## How it works:
+## - In VRAM, we allocate enough space for 1 frame of animation.
+## - Each VBlank, we copy the current frame into this space, replacing the previous contents.
+## 
+## This is ideal for sprites like the player character, who may have hundreds of frames of animation,
+##  which would not all fit into VRAM at once.
+##
+## For a more thorough breakdown of this approach, see:
+## https://pineight.com/gba/managing-sprite-vram.txt
+##
+## Twiggy spritesheet by GrafxKid: https://opengameart.org/users/grafxkid
+## Image data (twiggy.s) is produced using `grit` in the terminal:
+## ::
+##    grit twiggy.png -gB4 -pn16
+## 
+
+import natu/[video, bios, irq, math, utils]
+
+# Include the spritesheet in the build, make the data available to Nim
+{.compile: "twiggy.s".}
+var twiggyTiles {.importc: "twiggyTiles".}: array[3328, uint32]
+var twiggyPal {.importc: "twiggyPal".}: array[16, uint16]
+
+
+# Animation data
+# --------------
+# An animation is a list of frames in the spritesheet.
+# Nim doesn't have good support for addressable constant data, so if we want
+#  to put our animation data in ROM, we must use C as a work around.
+
+type
+  AnimDataPtr = ptr AnimData
+  AnimData {.bycopy, exportc.} = object
+    frames: ptr UncheckedArray[uint16]
+    len: int
+    speed: int
+
+# Use emit to produce C code.
+{.emit:"""
+static const AnimData animIdleData = {
+  .frames = (const NU16[]){1,3,4,5},
+  .len = 4,
+  .speed = 7,
+};
+static const AnimData animWalkData = {
+  .frames = (const u16[]){13,14,15,16,17,18},
+  .len = 6,
+  .speed = 4,
+};
+static const AnimData *animIdle = &animIdleData;
+static const AnimData *animWalk = &animWalkData;
+""".}
+
+# Bring the variables from C back into Nim
+var animIdle {.importc, nodecl.}: AnimDataPtr
+var animWalk {.importc, nodecl.}: AnimDataPtr
+
+
+# Animation state
+# ---------------
+
+type Anim = object
+  ## Holds the current state of an animation.
+  data: AnimDataPtr
+  pos: int
+  timer: int
+
+proc initAnim(data: AnimDataPtr): Anim {.noinit.} =
+  result.data = data
+  result.timer = data.speed + 1
+  result.pos = 0
+
+proc frame(a: Anim): int {.inline.} =
+  ## Get the current frame number within the sprite sheet.
+  a.data.frames[a.pos].int
+
+proc update(a: var Anim) =
+  ## Progress anim timer, advance to the next frame if necessary.
+  if a.timer > 0:
+    dec a.timer
+  else:
+    inc a.pos
+    if a.pos >= a.data.len:
+      a.pos = 0
+    a.timer = a.data.speed
+
+
+# Current animation state of the player:
+var anim = initAnim(animWalk)
+var cooldown = 180
+
+proc updatePlayerAnim() =
+  # Toggle between walking and idling every 3 seconds
+  dec cooldown
+  if cooldown <= 0:
+    if anim.data == animIdle:
+      anim = initAnim(animWalk)
+    else:
+      anim = initAnim(animIdle)
+    cooldown = 180
+  # Progress the animation
+  anim.update()
+
+
+# Memory locations used by our sprite:
+# (in a real project these should come from allocators of some kind)
+const tid = 0  # base tile in object VRAM
+const oid = 0  # OAM entry number
+const pal = 0  # palette slot
+
+# amount of memory taken up by 1 frame of animation
+const framePixels = 32*32
+const frameBytes = framePixels div 2
+const frameWords = frameBytes div sizeof(uint32)
+
+
+proc main() =
+  
+  irq.enable(iiVBlank)
+  
+  # enable sprites with 1d mapping
+  dispcnt.init:
+    obj = true
+    obj1d = true
+  
+  # copy palette into Object PAL RAM
+  memcpy16(addr objPalMem[pal], addr twiggyPal, twiggyPal.len)
+  
+  # copy an initial frame into Object VRAM
+  memcpy32(addr objTileMem[tid], addr twiggyTiles, frameWords)
+  
+  # hide all sprites
+  for obj in mitems(objMem):
+    obj.hide()
+  
+  # set up sprite
+  objMem[oid].init:
+    pos = vec2i(100, 60)
+    size = s32x32
+    tid = tid
+    pal = pal
+  
+  while true:
+    updatePlayerAnim()
+    VBlankIntrWait()
+    # Copy current frame of animation into Object VRAM (replacing the old frame)
+    memcpy32(addr objTileMem[tid], addr twiggyTiles[anim.frame * frameWords], frameWords)
+
+main()

@@ 1,31 @@
+import os, strutils
+import natu/config
+
+const main = "anim_sprite.nim"         # path to project file
+const name = splitFile(main).name      # name of ROM
+
+put "natu.gameTitle", "ANIMSPRITE"     # max 12 chars, uppercase
+put "natu.gameCode", "2NTP"            # 4 chars, see GBATEK for info
+
+if projectPath() == thisDir() / main:
+  # This runs only when compiling the project file:
+  gbaCfg()                             # set C compiler + linker options for GBA target
+  switch "os", "standalone"
+  switch "gc", "none"
+  switch "checks", "off"               # toggle assertions, bounds checking, etc.
+  switch "path", projectDir()          # allow imports relative to the main file
+  switch "header"                      # output "{project}.h"
+  switch "nimcache", "nimcache"        # output C sources to local directory
+  switch "cincludes", nimcacheDir()    # allow external C files to include "{project}.h"
+
+task build, "builds the GBA rom":
+  let args = commandLineParams()[1..^1].join(" ")
+  selfExec "c " & args & " -o:" & name & ".elf " & thisDir() / main
+  gbaStrip name & ".elf", name & ".gba"
+  gbaFix name & ".gba"
+
+task clean, "removes build files":
+  rmDir "nimcache"
+  rmFile name & ".gba"
+  rmFile name & ".elf"
+  rmFile name & ".elf.map"

@@ 1,498 @@
+
+@{{BLOCK(twiggy)
+
+@=======================================================================
+@
+@	twiggy, 32x832@4, 
+@	+ palette 16 entries, not compressed
+@	+ 416 tiles not compressed
+@	Total size: 32 + 13312 = 13344
+@
+@	Time-stamp: 2020-01-14, 12:05:21
+@	Exported by Cearn's GBA Image Transmogrifier, v0.8.15
+@	( http://www.coranac.com/projects/#grit )
+@
+@=======================================================================
+
+	.section .rodata
+	.align	2
+	.global twiggyTiles		@ 13312 unsigned chars
+	.hidden twiggyTiles
+twiggyTiles:
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11100000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000111
+	.word 0x32210000,0x22210000,0x22310000,0x22100000,0x23100000,0x31000000,0x10000000,0x00000000
+	.word 0x00000001,0x00000012,0x11110132,0x22221322,0x52222432,0x22222463,0x22222261,0x32222221
+	.word 0x10000000,0x21000000,0x23101111,0x22312222,0x23422225,0x36422222,0x16222222,0x12222223
+	.word 0x00001223,0x00001222,0x00001322,0x00000122,0x00000132,0x00000013,0x00000001,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x73222321,0x55173221,0x55155231,0x55155210,0x15557310,0x55573100,0x77111000,0x54461000
+	.word 0x12322237,0x12237155,0x13255155,0x01255155,0x01375551,0x00137555,0x00011177,0x00016445
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44446100,0x44655100,0x44647510,0x99875510,0x18911100,0x01710000,0x01441000,0x01111000
+	.word 0x00164444,0x00155644,0x01574644,0x01557899,0x00111981,0x00001710,0x00014410,0x00011110
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11100000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x21000000,0x21000000,0x31000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000132,0x00001222,0x11113222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310
+	.word 0x33310000,0x33331000,0x33331111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222
+	.word 0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22322210,0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x44610000
+	.word 0x32234732,0x17715551,0x15515551,0x15515551,0x17555115,0x01755555,0x00111177,0x00001655
+	.word 0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44461000,0x46551000,0x46755100,0x98555100,0x99111000,0x17100000,0x14410000,0x11110000
+	.word 0x00016444,0x00017444,0x00177444,0x00177899,0x00011881,0x00001410,0x00016610,0x00011110
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00001110
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00013331,0x00133331,0x11133331,0x22266310,0x25522610,0x22222210,0x22222221,0x22222221
+	.word 0x23100000,0x22210000,0x22231111,0x22224322,0x32234422,0x16364422,0x13644222,0x13322222
+	.word 0x00000012,0x00000012,0x00000013,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22222221,0x22222221,0x22222231,0x32223210,0x33333310,0x33331100,0x71110000,0x46100000
+	.word 0x13222222,0x01222222,0x01222222,0x01222222,0x01223333,0x00133333,0x00011177,0x00001644
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44610000,0x44710000,0x44710000,0x98710000,0x88100000,0x14100000,0x16610000,0x11110000
+	.word 0x00016444,0x00015564,0x00155764,0x00155589,0x00011991,0x00001710,0x00014410,0x00011110
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000,0x21000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011,0x00000132
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11100000,0x33310000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001
+	.word 0x21000000,0x31000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00001222,0x11113222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310,0x22322210
+	.word 0x33331000,0x33331111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222,0x32234732
+	.word 0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x44610000,0x44461000
+	.word 0x17715551,0x15515551,0x15515551,0x17555115,0x01755555,0x00111177,0x00001655,0x00016444
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x46441000,0x46551000,0x98755100,0x99555100,0x17111000,0x14100000,0x01410000,0x00110000
+	.word 0x00016444,0x00017444,0x00177899,0x00177881,0x00011410,0x00001610,0x00016100,0x00011000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000,0x21000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011,0x00000132
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11100000,0x33310000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001
+	.word 0x21000000,0x31000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00001222,0x11113222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310,0x22322210
+	.word 0x33331000,0x33331111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222,0x32234732
+	.word 0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x44610000,0x44461000
+	.word 0x17715551,0x15515551,0x15515551,0x17555115,0x01755555,0x00111177,0x00001655,0x00016444
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x46551000,0x46755100,0x98555100,0x99111000,0x17100000,0x14100000,0x01410000,0x00110000
+	.word 0x00017444,0x00177444,0x00177899,0x00011881,0x00001410,0x00001610,0x00016100,0x00011000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011,0x00000122
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x01100000,0x13310000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x10000000,0x10000000,0x10000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000
+	.word 0x00001222,0x00013222,0x11112222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310
+	.word 0x13331000,0x13333100,0x13333111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22322210,0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x44461000
+	.word 0x32234732,0x17715551,0x15515551,0x15515551,0x17555115,0x01755555,0x00111177,0x00016455
+	.word 0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44551000,0x46755100,0x46555100,0x98111000,0x99100000,0x17100000,0x14410000,0x11110000
+	.word 0x00017444,0x00177444,0x00177444,0x00011899,0x00001881,0x00001410,0x00016610,0x00011110
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x01110000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22100000,0x22100000,0x23100000,0x21000000,0x31000000,0x10000000,0x00000000,0x00000000
+	.word 0x00000013,0x11000122,0x22111322,0x22234222,0x22224322,0x22224633,0x22322461,0x73222210
+	.word 0x13331000,0x13333111,0x13325522,0x12222222,0x22222222,0x22223222,0x32234732,0x17715551
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001,0x00000001,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x57222210,0x55222100,0x55233100,0x55331000,0x57711100,0x71115510,0x44445510,0x44655510
+	.word 0x15515551,0x15515551,0x17551115,0x01755145,0x01117555,0x01771177,0x11776455,0x17776444
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x46111100,0x46100000,0x98100000,0x88811000,0x11461000,0x00161000,0x00011000,0x00000000
+	.word 0x01111444,0x00001444,0x00019999,0x00144781,0x00016410,0x00001100,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011,0x00000122,0x00001222
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x01100000,0x13310000,0x13331000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x10000000,0x10000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00013222,0x11112222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310,0x22322210
+	.word 0x13333100,0x13333111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222,0x32234732
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x73222210,0x57222310,0x15222100,0x55233100,0x57331000,0x71110000,0x44610000,0x55510000
+	.word 0x17755555,0x15555555,0x15115551,0x17555155,0x01755555,0x00111177,0x00011455,0x00177444
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x55710000,0x46100000,0x98100000,0x88110000,0x14610000,0x01610000,0x00110000,0x00000000
+	.word 0x00177444,0x00011444,0x00001999,0x00019981,0x00144710,0x00016410,0x00001100,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x10000000,0x10000000,0x10000000,0x10000000,0x10000000,0x10000000,0x00000000
+	.word 0x00000011,0x00000122,0x00001222,0x00013222,0x11112222,0x22342222,0x22443223,0x22446331
+	.word 0x01100000,0x13310000,0x13331000,0x13333100,0x13333111,0x13662222,0x16225522,0x12222222
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22244610,0x22222310,0x22322210,0x73222210,0x57222310,0x15222100,0x55233100,0x57331000
+	.word 0x22222222,0x22223222,0x32234732,0x17755555,0x15555555,0x15115551,0x17555115,0x01755555
+	.word 0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x71110000,0x55510000,0x55710000,0x46100000,0x46100000,0x98100000,0x44100000,0x11100000
+	.word 0x00111177,0x00177457,0x00177444,0x00011444,0x00001444,0x00001999,0x00001664,0x00001111
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x10000000,0x21000000,0x21000000,0x31000000,0x10000000,0x10000000,0x00000000
+	.word 0x00000000,0x00000011,0x00000132,0x00001222,0x11113222,0x22342222,0x22443223,0x22446331
+	.word 0x00000000,0x11100000,0x33310000,0x33331000,0x33331111,0x13662222,0x16225522,0x12222222
+	.word 0x00000000,0x00000000,0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22244610,0x22222310,0x22322210,0x73222210,0x57222310,0x15222100,0x55233100,0x57331000
+	.word 0x22222222,0x22223222,0x32234732,0x17755555,0x15555555,0x15115551,0x17555115,0x01755555
+	.word 0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x71110000,0x44610000,0x55510000,0x55710000,0x46100000,0x98100000,0x44100000,0x11100000
+	.word 0x00111177,0x00011455,0x00177444,0x00177444,0x00011444,0x00001999,0x00001664,0x00001111
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011,0x00000122,0x00001222
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x01100000,0x13310000,0x13331000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x10000000,0x10000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00013222,0x11112222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310,0x22322210
+	.word 0x13333100,0x13333111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222,0x32234732
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x13222210,0x57222310,0x11222100,0x55233100,0x57331000,0x71110000,0x55610000,0x55751000
+	.word 0x17155555,0x15515551,0x11115551,0x17555155,0x01755555,0x00111177,0x01551457,0x01556444
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x55771000,0x46110000,0x98100000,0x99100000,0x71000000,0x41000000,0x10000000,0x00000000
+	.word 0x01555445,0x00111444,0x00001899,0x00018889,0x00144744,0x00016616,0x00001101,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x10000000,0x10000000,0x10000000,0x10000000,0x10000000,0x10000000,0x00000000
+	.word 0x00000011,0x00000122,0x00001222,0x00013222,0x11112222,0x22342222,0x22443223,0x22446331
+	.word 0x01100000,0x13310000,0x13331000,0x13333100,0x13333111,0x13662222,0x16225522,0x12222222
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22244610,0x22222310,0x22322210,0x73222210,0x57222310,0x15222100,0x55233100,0x57331000
+	.word 0x22222222,0x22223222,0x32234732,0x17755555,0x15555555,0x15115551,0x17555115,0x01755555
+	.word 0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x71110000,0x44610000,0x44410000,0x46461000,0x66751000,0x88551000,0x88755100,0x11111100
+	.word 0x00111177,0x00001655,0x00017644,0x00155744,0x00179986,0x00017499,0x00144111,0x00111100
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x10000000,0x21000000,0x21000000,0x31000000,0x10000000,0x10000000,0x00000000
+	.word 0x00000000,0x00000011,0x00000132,0x00001222,0x11113222,0x22342222,0x22443223,0x22446331
+	.word 0x00000000,0x11100000,0x33310000,0x33331000,0x33331111,0x13662222,0x16225522,0x12222222
+	.word 0x00000000,0x00000000,0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22244610,0x22222310,0x22322210,0x73222210,0x57222310,0x15222100,0x55233100,0x57331000
+	.word 0x22222222,0x22223222,0x32234732,0x17755555,0x15555555,0x15115551,0x17555115,0x01755555
+	.word 0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x71110000,0x44610000,0x44410000,0x46461000,0x66751000,0x88551000,0x88755100,0x11111100
+	.word 0x00111177,0x00001655,0x00017644,0x00155744,0x00179986,0x00017499,0x00144111,0x00111100
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11100000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x21000000,0x21000000,0x31000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000132,0x00001222,0x11113222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310
+	.word 0x33310000,0x33331000,0x33331111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222
+	.word 0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22322210,0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x46100000
+	.word 0x32234732,0x17715551,0x15515551,0x15515551,0x17555155,0x01755555,0x00111177,0x00001655
+	.word 0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44610000,0x66710000,0x55510000,0x55710000,0x91100000,0x41000000,0x11000000,0x10000000
+	.word 0x00001444,0x00001444,0x00017444,0x00017899,0x00001189,0x00000014,0x00000166,0x00000111
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000,0x21000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011,0x00000132
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11100000,0x33310000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001
+	.word 0x21000000,0x31000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00001222,0x11113222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310,0x22322210
+	.word 0x33331000,0x33331111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222,0x32234732
+	.word 0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x44610000,0x44471000
+	.word 0x17715551,0x15515551,0x15515551,0x17555155,0x01755555,0x00111177,0x00011455,0x00157444
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x46751000,0x46551000,0x98110000,0x81000000,0x10000000,0x10000000,0x00000000,0x00000000
+	.word 0x00157444,0x00011444,0x00001899,0x00001899,0x00001447,0x00000164,0x00000011,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011,0x00000122
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x01100000,0x13310000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x10000000,0x10000000,0x10000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000
+	.word 0x00001222,0x00013222,0x11112222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310
+	.word 0x13331000,0x13333100,0x13333111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22322210,0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x44610000
+	.word 0x32234732,0x17715551,0x15515551,0x15515551,0x17555155,0x01755555,0x00111177,0x00001655
+	.word 0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44710000,0x55510000,0x55710000,0x98100000,0x81000000,0x61000000,0x11000000,0x10000000
+	.word 0x00011444,0x00157444,0x00157444,0x00011899,0x00000199,0x00000017,0x00000144,0x00000111
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11100000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x21000000,0x21000000,0x31000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000132,0x00001222,0x11113222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310
+	.word 0x33310000,0x33331000,0x33331111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222
+	.word 0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22322210,0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x44610000
+	.word 0x32234732,0x17715551,0x15515551,0x15515551,0x17555155,0x01755555,0x00111177,0x00001655
+	.word 0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x55510000,0x55710000,0x46100000,0x98100000,0x99100000,0x17100000,0x44100000,0x11100000
+	.word 0x00001444,0x00001444,0x00017444,0x00017899,0x00001188,0x00000166,0x00000111,0x00000001
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000,0x21000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011,0x00000132
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11100000,0x33310000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001
+	.word 0x21000000,0x31000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00001222,0x11113222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310,0x22322210
+	.word 0x33331000,0x33331111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222,0x32234732
+	.word 0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x44610000,0x55710000
+	.word 0x17715551,0x15515551,0x15515551,0x17555155,0x01755555,0x00111177,0x00001657,0x00001445
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x57100000,0x66100000,0x98100000,0x88811000,0x11461000,0x00161000,0x00011000,0x00000000
+	.word 0x00001445,0x00001444,0x00001999,0x00019981,0x00144710,0x00016410,0x00001100,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011,0x00000122
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x01100000,0x13310000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x10000000,0x10000000,0x10000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000
+	.word 0x00001222,0x00013222,0x11112222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310
+	.word 0x13331000,0x13333100,0x13333111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22322210,0x73222210,0x57222310,0x55222100,0x55233100,0x57331000,0x71110000,0x46100000
+	.word 0x32234732,0x17715551,0x15515551,0x15515551,0x17555155,0x01755555,0x00111177,0x00001655
+	.word 0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44610000,0x55710000,0x57100000,0x98110000,0x88610000,0x11610000,0x00110000,0x00000000
+	.word 0x00001444,0x00001445,0x00001445,0x00001999,0x00001991,0x00001710,0x00014410,0x00011110
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00001110
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00013331,0x00133331,0x11133331,0x22266310,0x25522610,0x22222210,0x22222221,0x22322221
+	.word 0x31000000,0x22100000,0x22311111,0x22243222,0x22344222,0x33644222,0x16442222,0x13222222
+	.word 0x00000122,0x00000122,0x00000132,0x00000012,0x00000013,0x00000001,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x37432231,0x55517710,0x55515510,0x55515510,0x51555710,0x55557100,0x71111000,0x44610000
+	.word 0x12223222,0x12222371,0x13222751,0x01222551,0x01332555,0x00133755,0x00011177,0x00001657
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x55710000,0x57100000,0x66100000,0x98100000,0x88100000,0x14410000,0x01661000,0x01111000
+	.word 0x00016445,0x11156445,0x15557444,0x01178999,0x00019911,0x00017100,0x00144100,0x00111100
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00111100,0x01222210,0x13222210,0x42222310,0x43222100,0x46331000
+	.word 0x00000000,0x00000000,0x00000000,0x10000000,0x31111111,0x22222223,0x22222224,0x55222224
+	.word 0x00000000,0x00000000,0x00001111,0x00013333,0x00013333,0x00013336,0x00001362,0x00001622
+	.word 0x00000000,0x00000000,0x11000000,0x89111000,0x69874100,0x49954410,0x68977610,0x11111110
+	.word 0x44610000,0x22310000,0x22211111,0x22344446,0x22677644,0x33557764,0x35555764,0x11111111
+	.word 0x22222222,0x23222222,0x34432223,0x77777732,0x17771172,0x55555552,0x55555573,0x11111111
+	.word 0x00001222,0x00001222,0x00001322,0x00000147,0x00000171,0x00000175,0x00000017,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x10000000,0x21000000,0x21000000,0x21000000,0x21000000,0x21000000,0x31000000
+	.word 0x00000000,0x00000001,0x00000012,0x00000122,0x00001322,0x11111222,0x22234222,0x22244322
+	.word 0x00000000,0x00110000,0x01331000,0x01333100,0x01333310,0x01333311,0x01366222,0x01622552
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x10000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22244633,0x22224461,0x22222231,0x22232221,0x17322221,0x15722231,0x15522210,0x55523310
+	.word 0x01222222,0x12222222,0x12222322,0x13223473,0x01771555,0x01551555,0x01551555,0x01755515
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x55733100,0x77111000,0x54461000,0x44646100,0x66675100,0x49855100,0x67875510,0x11111110
+	.word 0x00175555,0x00011117,0x00001645,0x00116664,0x01446644,0x01668866,0x00164886,0x00011111
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x11000000,0x22100000,0x22100000,0x23100000,0x21000000,0x31000000
+	.word 0x00000000,0x00000000,0x00000001,0x00000013,0x00000122,0x11111322,0x22234222,0x22244322
+	.word 0x00000000,0x00000000,0x01110000,0x13331000,0x13333100,0x13333111,0x01366222,0x01622552
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x10000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22244633,0x22224461,0x22222231,0x22232221,0x17322221,0x15722231,0x15522210,0x55523310
+	.word 0x01222222,0x12222222,0x12222322,0x13223473,0x01771555,0x01551555,0x01551555,0x01755515
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x55733100,0x77111000,0x54461000,0x44646100,0x66675100,0x49855100,0x67875510,0x11111110
+	.word 0x00175555,0x00011117,0x00001645,0x00116664,0x01446644,0x01668866,0x00164886,0x00011111
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x01110000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011
+	.word 0x13221000,0x22221000,0x22231000,0x22210000,0x22310000,0x33100000,0x11000000,0x10000000
+	.word 0x00000000,0x00000001,0x11111013,0x22222132,0x55222243,0x22222246,0x22222226,0x33222222
+	.word 0x31000000,0x22100000,0x22310111,0x22231222,0x22342222,0x33642222,0x11622222,0x01222222
+	.word 0x00000122,0x00000122,0x00000132,0x00000012,0x00000013,0x00000001,0x00000000,0x00000000
+
+	.word 0x10000000,0x10000000,0x10000000,0x00000000,0x00000000,0x10000000,0x51000000,0x71000000
+	.word 0x77322232,0x55557322,0x55717523,0x55151521,0x11555731,0x15557351,0x77711157,0x55444657
+	.word 0x01232223,0x01223715,0x01325515,0x00125515,0x00137555,0x00013755,0x00001111,0x00000016
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x51000000,0x10000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44446775,0x44461111,0x44461000,0x99981000,0x81991000,0x10171000,0x00144100,0x00111100
+	.word 0x00000164,0x00111564,0x00155574,0x00011718,0x00000118,0x00000144,0x00001661,0x00001111
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x11000000,0x22100000,0x22100000,0x23100000,0x21000000,0x31000000,0x10000000,0x00000000
+	.word 0x00000001,0x00000013,0x11000122,0x22111322,0x22234222,0x22224322,0x22224633,0x22322461
+	.word 0x01110000,0x13331000,0x13333111,0x13325522,0x12222222,0x22222222,0x22223222,0x32234732
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x73222210,0x57222210,0x55222100,0x55233100,0x55331000,0x57710000,0x71100000,0x44610000
+	.word 0x17715551,0x15515551,0x15515551,0x17555115,0x01755555,0x00117555,0x00001177,0x00001655
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44461000,0x46551000,0x46755100,0x98555100,0x99111000,0x17100000,0x14410000,0x11110000
+	.word 0x00016444,0x00017444,0x00177444,0x00177899,0x00011881,0x00001410,0x00016610,0x00011110
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x10000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000011
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x11100000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x21000000,0x21000000,0x31000000,0x10000000,0x10000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000132,0x00001222,0x11113222,0x22342222,0x22443223,0x22446331,0x22244610,0x22222310
+	.word 0x33310000,0x33331000,0x33331111,0x13662222,0x16225522,0x12222222,0x22222222,0x22223222
+	.word 0x00000001,0x00000001,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000001
+
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x22322210,0x73222210,0x57222310,0x15222100,0x55233100,0x57331000,0x71110000,0x44610000
+	.word 0x32234732,0x17755555,0x15555555,0x15115551,0x17555115,0x01755555,0x00111177,0x00001655
+	.word 0x00000001,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+	.word 0x44461000,0x46551000,0x46755100,0x98555100,0x99111000,0x17100000,0x14410000,0x11110000
+	.word 0x00016444,0x00017444,0x00177444,0x00177899,0x00011881,0x0000141A,0x0001661A,0x0001111A
+	.word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000
+
+	.section .rodata
+	.align	2
+	.global twiggyPal		@ 32 unsigned chars
+	.hidden twiggyPal
+twiggyPal:
+	.hword 0x0000,0x0842,0x2B96,0x1AA8,0x2D7E,0x77BE,0x1894,0x56DE
+	.hword 0x1CE7,0x2D8C,0x2DD2,0x0421,0x0421,0x0421,0x0421,0x0421
+
+@}}BLOCK(twiggy)

@@ 1,14 @@
+task build_examples, "build all examples":
+  for dir in listDirs(thisDir()):
+    withDir dir:
+      echo dir
+      selfExec "build"
+
+task clean_examples, "remove build files for all examples":
+  for dir in listDirs(thisDir()):
+    withDir dir:
+      selfExec "clean"
+
+task examples, "build all examples":
+  # shorthand
+  buildExamplesTask()

@@ 1,8 @@
+# Sound effects and songs don't require any options, so
+# we can build the lists automatically if desired:
+
+for s in listFiles("samples").sorted:
+  sample s
+
+for m in listFiles("modules").sorted:
+  module m

@@ 1,3 @@
+cd "backgrounds"
+
+background "dark_clouds.png", bkReg4bpp, flags = {bfAutoPal}

@@ 1,45 @@
+import os, strutils, algorithm
+import natu/config
+
+const main = "source/goodboy_gallery.nim"  # path to project file
+const name = splitFile(main).name          # name of ROM
+
+put "natu.gameTitle", "GALLERY"        # max 12 chars, uppercase
+put "natu.gameCode", "2NTP"            # 4 chars, see GBATEK for info
+
+if projectPath() == thisDir() / main:
+  # This runs only when compiling the project file:
+  gbaCfg()                             # set C compiler + linker options for GBA target
+  switch "os", "standalone"
+  switch "gc", "none"
+  switch "checks", "off"               # toggle assertions, bounds checking, etc.
+  switch "path", projectDir()          # allow imports relative to the main file
+  switch "header"                      # output "{project}.h"
+  switch "nimcache", "nimcache"        # output C sources to local directory
+  switch "cincludes", nimcacheDir()    # allow external C files to include "{project}.h"
+
+task graphics, "convert spritesheets":
+  gfxConvert "graphics.nims"
+
+task audio, "convert music and sounds":
+  mmConvert "audio.nims"
+
+task backgrounds, "convert background tilemaps":
+  bgConvert "backgrounds.nims"
+
+task build, "builds the GBA rom":
+  let args = commandLineParams()[1..^1].join(" ")
+  graphicsTask()
+  audioTask()
+  backgroundsTask()
+  selfExec "c " & args & " -o:" & name & ".elf " & thisDir() / main
+  gbaStrip name & ".elf", name & ".gba"
+  gbaFix name & ".gba"
+
+task clean, "removes build files":
+  rmDir "nimcache"
+  rmDir "output"
+  rmFile name & ".gba"
+  rmFile name & ".elf"
+  rmFile name & ".elf.map"
+  <
\ No newline at end of file

@@ 1,17 @@
+# Config file for sprite graphics to be converted
+# as part of the build process.
+
+cd "graphics"
+
+graphic "barrier.png", size=s32x64
+graphic "gem.png", size=s32x32
+graphic "player.png", size=s32x32
+graphic "sacrificed_items.png", size=s32x32
+
+sharePal:
+  graphic "bullet.png", size=s8x8
+  graphic "muzzle.png", size=s32x32
+
+sharePal:
+  graphic "breakable.png", size=s32x32
+  graphic "shield.png", size=s64x64

@@ 1,34 @@
+import natu/[maxmod, memory]
+
+export vblank, frame, Sample, Module
+
+const
+  channels = 16
+  waveMemSize = channels * (mmSizeofModCh + mmSizeofActCh + mmSizeofMixCh) + mmMixLen31kHz 
+
+var
+  waveMem {.codegenDecl:EWRAM_DATA.}: array[waveMemSize, uint8]
+  mixMem {.align:4.}: array[mmMixLen31kHz, uint8]
+
+proc init* =
+  var config = MmGbaSystem(
+    mixingMode: mmMix31kHz,
+    modChannelCount: channels,
+    mixChannelCount: channels,
+    moduleChannels: addr waveMem[0],
+    activeChannels: addr waveMem[channels * mmSizeofModCh],
+    mixingChannels: addr waveMem[channels * (mmSizeofModCh + mmSizeofActCh)],
+    mixingMemory: addr mixMem[0],
+    waveMemory: addr waveMem[channels * (mmSizeofModCh + mmSizeofActCh + mmSizeofMixCh)],
+    soundbank: soundbankBin,
+  )
+  maxmod.init(addr config)
+
+proc playSound*(sampleId: Sample) {.inline.} =
+  maxmod.effect(sampleId)
+
+proc playSong*(moduleId: Module) {.inline.} =
+  maxmod.start(moduleId, mmPlayLoop)
+
+proc stopSong* {.inline.} =
+  maxmod.stop()

@@ 1,121 @@
+## Gallery Demo
+## ------------
+## This example demonstrates the use of Natu's asset system.
+## 
+## A `Graphic` enum is generated based on the "graphics.nims" config file.
+## Graphics can be used at compile time and at runtime.
+## 
+## Similarly, enums are generated for backgrounds, music modules and samples.
+## 
+## While this example is still rather direct and low-level, it uses allocators
+## to make managing sprite tiles and palettes easier. The Graphic enum is set
+## up to work with these allocators directly.
+
+import natu/[video, bios, irq, input, math]
+import natu/[graphics, backgrounds]
+import audio, simple_anim
+
+const anims: array[Graphic, AnimData] = [
+  gfxBarrier:   AnimData(first: 0, len: 10, speed: 3),
+  gfxGem:       AnimData(first: 0, len: 8, speed: 4),
+  gfxPlayer:    AnimData(first: 0, len: 8, speed: 5),
+  gfxSacrificedItems: AnimData(first: 0, len: 8, speed: 3),
+  gfxBullet:    AnimData(first: 0, len: 4, speed: 3),
+  gfxMuzzle:    AnimData(first: 0, len: 8, speed: 2),
+  gfxBreakable: AnimData(first: 7, len: 7, speed: 3),
+  gfxShield:    AnimData(first: 0, len: 4, speed: 2),
+]
+
+var graphic: Graphic     # Current image to show
+var anim: Anim           # Animation state
+var obj: ObjAttr         # Sprite fields
+
+proc initCurrentSprite(g: Graphic) =
+  graphic = g
+  anim = initAnim(anims[g])
+  obj.init(
+    pos = vec2i(120, 80) - vec2i(g.width, g.height) / 2,
+    size = g.size,
+    tid = allocObjTiles(g),  # Reserve enough tiles in VRAM for 1 frame of animation.
+    pal = acquireObjPal(g),  # Load the palette into a slot in the PAL RAM buffer
+  )
+
+proc destroyCurrentSprite() =
+  freeObjTiles(obj.tid)    # Free the tiles.
+  releaseObjPal(graphic)   # Palette will also be freed only if nobody else is using it.
+
+
+proc update =
+  ## Run game logic
+  
+  if keyHit(kiLeft):
+    if graphic > Graphic.low:
+      playSound(sfxChanged)
+      destroyCurrentSprite()
+      initCurrentSprite(graphic.pred)
+    else:
+      playSound(sfxBlocked)
+  
+  if keyHit(kiRight):
+    if graphic < Graphic.high:
+      playSound(sfxChanged)
+      destroyCurrentSprite()
+      initCurrentSprite(graphic.succ)
+    else:
+      playSound(sfxBlocked)
+  
+  anim.update()
+
+
+proc draw =
+  ## Do graphical updates
+  
+  # update OAM entry
+  # note: unlike in C, we can do this assignment without clobbering the affine data.
+  objMem[0] = obj
+  
+  if anim.dirty:
+    # copy a new frame into VRAM only if we're on a different
+    # frame of animation than previously.
+    copyFrame(addr objTileMem[obj.tid], graphic, anim.frame)
+  
+  # Copy palette buffers into PAL RAM.
+  flushPals()
+
+
+proc onVBlank =
+  audio.vblank()
+  draw()
+  audio.frame()
+
+
+proc main =
+  
+  # setup
+  
+  irq.put(iiVBlank, onVBlank)
+  
+  audio.init()
+  
+  dispcnt.init(layers = { lBg0, lObj }, obj1d = true)
+  
+  # Init BG0
+  bgcnt[0].init(cbb = 0, sbb = 31)
+  
+  # Copy the tiles, map and palette
+  bgcnt[0].load(bgDarkClouds)
+  
+  # Hide all sprites
+  for obj in mitems(objMem):
+    obj.hide()
+  
+  playSong(modSubway)
+  initCurrentSprite(gfxPlayer)
+  
+  while true:
+    keyPoll()
+    update()
+    VBlankIntrWait()
+
+
+main()

@@ 1,24 @@
+
+# Simple looping animation
+type
+  AnimData* = object
+    first*, len*, speed*: int
+  Anim* = object
+    data*: AnimData
+    frame*, timer*: int
+
+proc initAnim*(data: AnimData): Anim =
+  result.data = data
+  result.frame = 0
+  result.timer = data.speed + 1
+
+proc update*(a: var Anim) =
+  dec a.timer
+  if a.timer < 0:
+    a.timer = a.data.speed
+    inc a.frame
+    if a.frame >= a.data.first + a.data.len:
+      a.frame = 0
+
+proc dirty*(a: Anim): bool =
+  a.timer == a.data.speed

@@ 1,31 @@
+import os, strutils
+import natu/config
+
+const main = "hello_world.nim"         # path to project file
+const name = splitFile(main).name      # name of ROM
+
+put "natu.gameTitle", "HELLO"          # max 12 chars, uppercase
+put "natu.gameCode", "2NTP"            # 4 chars, see GBATEK for info
+
+if projectPath() == thisDir() / main:
+  # This runs only when compiling the project file:
+  gbaCfg()                             # set C compiler + linker options for GBA target
+  switch "os", "standalone"
+  switch "gc", "none"
+  switch "checks", "off"               # toggle assertions, bounds checking, etc.
+  switch "path", projectDir()          # allow imports relative to the main file
+  switch "header"                      # output "{project}.h"
+  switch "nimcache", "nimcache"        # output C sources to local directory
+  switch "cincludes", nimcacheDir()    # allow external C files to include "{project}.h"
+
+task build, "builds the GBA rom":
+  let args = commandLineParams()[1..^1].join(" ")
+  selfExec "c " & args & " -o:" & name & ".elf " & thisDir() / main
+  gbaStrip name & ".elf", name & ".gba"
+  gbaFix name & ".gba"
+
+task clean, "removes build files":
+  rmDir "nimcache"
+  rmFile name & ".gba"
+  rmFile name & ".elf"
+  rmFile name & ".elf.map"

@@ 1,12 @@
+import natu/[video, tte]
+
+# show background 0
+dispcnt = initDispCnt(bg0 = true)
+
+# initialise text
+tte.initChr4c(bgnr = 0, initBgCnt(cbb = 0, sbb = 31))
+tte.setPos(92, 68)
+tte.write("Hello World!")
+
+while true:
+  discard

@@ 1,31 @@
+import os, strutils
+import natu/config
+
+const main = "move_sprite.nim"         # path to project file
+const name = splitFile(main).name      # name of ROM
+
+put "natu.gameTitle", "MOVESPRITE"     # max 12 chars, uppercase
+put "natu.gameCode", "2NTP"            # 4 chars, see GBATEK for info
+
+if projectPath() == thisDir() / main:
+  # This runs only when compiling the project file:
+  gbaCfg()                             # set C compiler + linker options for GBA target
+  switch "os", "standalone"
+  switch "gc", "none"
+  switch "checks", "off"               # toggle assertions, bounds checking, etc.
+  switch "path", projectDir()          # allow imports relative to the main file
+  switch "header"                      # output "{project}.h"
+  switch "nimcache", "nimcache"        # output C sources to local directory
+  switch "cincludes", nimcacheDir()    # allow external C files to include "{project}.h"
+
+task build, "builds the GBA rom":
+  let args = commandLineParams()[1..^1].join(" ")
+  selfExec "c " & args & " -o:" & name & ".elf " & thisDir() / main
+  gbaStrip name & ".elf", name & ".gba"
+  gbaFix name & ".gba"
+
+task clean, "removes build files":
+  rmDir "nimcache"
+  rmFile name & ".gba"
+  rmFile name & ".elf"
+  rmFile name & ".elf.map"

@@ 1,69 @@
+## Sprite Example
+## ==============
+## This example demonstrates:
+## - using the VBlank interrupt to update at 60fps without burning CPU cycles
+## - loading graphics into memory
+## - setting sprite attributes
+## - using key functions to move the sprite around
+## 
+## Ship graphics by Stephen Challener (Redshrike), hosted by OpenGameArt.org
+## 
+## The `grit` command line tool can be used to convert an image to a representation that the hardware understands.
+## i.e. 4bpp paletted, broken into 8x8px tiles which are arranged sequentially (1d mapping)
+## ::
+##   grit ship.png -gB4 -pn16 -ftb
+##
+## This produces some raw binary files that we can embed into our project using `readBin` from the utils module.
+
+import natu/[video, bios, irq, input, math, utils]
+
+let shipTiles = readBin("ship.img.bin")
+let shipPal = readBin("ship.pal.bin")
+
+# Memory locations used by our sprite:
+const tid = 0  # base tile in object VRAM
+const oid = 0  # OAM entry number
+const pal = 0  # palette slot
+
+# ship position vector
+var pos = vec2i(50, 30)
+
+# enable VBlank interrupt so we can wait for the end of the frame without burning CPU cycles
+irq.enable(iiVBlank)
+
+# enable sprites with 1d mapping
+dispcnt.init(obj = true, obj1d = true)
+
+# copy palette into Object PAL RAM
+memcpy16(addr objPalMem[pal], unsafeAddr shipPal, shipPal.len div sizeof(uint16))
+
+# copy image into Object VRAM
+memcpy32(addr objTileMem[tid], unsafeAddr shipTiles, shipTiles.len div sizeof(uint32))
+
+# hide all sprites
+for obj in mitems(objMem):
+  obj.hide()
+
+# set up a sprite
+let s = addr objMem[oid]
+s[].init:
+  pos = pos
+  size = s64x64
+  tid = tid
+  pal = pal
+
+while true:
+  # update key states
+  keyPoll()
+  
+  # move the ship
+  if keyIsDown(kiLeft): pos.x -= 1
+  if keyIsDown(kiRight): pos.x += 1
+  if keyIsDown(kiUp): pos.y -= 1
+  if keyIsDown(kiDown): pos.y += 1
+  
+  # wait for the end of the frame
+  VBlankIntrWait()
+  
+  # update sprite position
+  s[].pos = pos

@@ 1,31 @@
+import os, strutils
+import natu/config
+
+const main = "mystify.nim"             # path to project file
+const name = splitFile(main).name      # name of ROM
+
+put "natu.gameTitle", "MYSTIFY"        # max 12 chars, uppercase
+put "natu.gameCode", "2NTP"            # 4 chars, see GBATEK for info
+
+if projectPath() == thisDir() / main:
+  # This runs only when compiling the project file:
+  gbaCfg()                             # set C compiler + linker options for GBA target
+  switch "os", "standalone"
+  switch "gc", "none"
+  switch "checks", "off"               # toggle assertions, bounds checking, etc.
+  switch "path", projectDir()          # allow imports relative to the main file
+  switch "header"                      # output "{project}.h"
+  switch "nimcache", "nimcache"        # output C sources to local directory
+  switch "cincludes", nimcacheDir()    # allow external C files to include "{project}.h"
+
+task build, "builds the GBA rom":
+  let args = commandLineParams()[1..^1].join(" ")
+  selfExec "c " & args & " -o:" & name & ".elf " & thisDir() / main
+  gbaStrip name & ".elf", name & ".gba"
+  gbaFix name & ".gba"
+
+task clean, "removes build files":
+  rmDir "nimcache"
+  rmFile name & ".gba"
+  rmFile name & ".elf"
+  rmFile name & ".elf.map"

@@ 1,66 @@
+## Mode 4 Example
+## ==============
+## This demonstrates bitmap drawing in mode 4 with page-flipping.
+## 
+## Based on the 'Mystify' screensaver, we have a bunch of points
+## that move around the screen and we draw lines between them.
+## 
+## Cool motion blur is left as an exercise to the reader :^)
+
+import natu/[video, math, utils, bios, irq]
+
+# set up points with random position and velocity:
+var vertices: array[6, tuple[pos, vel: Vec2f]]
+for v in mitems(vertices):
+  v.pos = vec2f(rand(2..237), rand(2..157))
+  v.vel = vec2f(rand(fp(-2)..fp(2)), rand(fp(-2)..fp(2)))
+
+# assign palette
+bgColorMem[0] = rgb5(2,4,6)      # use dark blue for backdrop color
+bgColorMem[1] = rgb5(20,28,31)   # use light blue for ink color
+
+# enable VBlank interrupt
+irq.enable(iiVBlank)
+
+# clear VRAM - only necessary to avoid visual junk when quick-launching the game
+# from a flashcart, or after restarting the game via soft-reset.
+RegisterRamReset({rsVram})
+
+# enable background 2, use display mode 4 (i.e. 8bpp bitmap with page-flipping)
+dispcnt.init(bg2 = true, mode = dm4)
+
+while true:
+  
+  # obtain a pointer to whichever page is not currently being displayed.
+  let buf: ptr M4Mem =
+    if dispcnt.page: addr m4MemBack
+    else: addr m4Mem
+  
+  buf[].clear()
+  
+  # begin with the final vertex.
+  var prev = vertices[^1].pos
+  
+  # update and draw all vertices
+  for v in mitems(vertices):
+    
+    # move by velocity
+    v.pos += v.vel
+    
+    # bounce off screen edge
+    if v.pos.x.toInt() notin 2..237: v.vel.x *= -1
+    if v.pos.y.toInt() notin 2..157: v.vel.y *= -1
+    
+    # draw line from last point to current point.
+    buf[].line(
+      prev.x.toInt(), prev.y.toInt(),
+      v.pos.x.toInt(), v.pos.y.toInt(),
+      clrid = 1,
+    )
+    prev = v.pos
+  
+  # wait until the end of the frame
+  VBlankIntrWait()
+  
+  # page flip:
+  dispcnt.page = not dispcnt.page

@@ 1,7 @@
+# Add all music and sounds from the audio directory.
+
+for f in listFiles("audio").sorted:
+  if f.endsWith(".wav"):
+    sample f
+  else:
+    module f

@@ 1,36 @@
+import os, strutils, algorithm
+import natu/config
+
+const main = "play_music.nim"         # path to project file
+const name = splitFile(main).name     # name of ROM
+
+put "natu.gameTitle", "PLAYMUSIC"     # max 12 chars, uppercase
+put "natu.gameCode", "2NTP"           # 4 chars, see GBATEK for info
+
+if projectPath() == thisDir() / main:
+  # This runs only when compiling the project file:
+  gbaCfg()
+  switch "os", "standalone"
+  switch "gc", "none"
+  switch "checks", "off"
+  switch "path", projectDir()          # allow imports relative to the main file
+  switch "header"                      # output "{project}.h"
+  switch "nimcache", "nimcache"        # output C sources to local directory
+  switch "cincludes", nimcacheDir()    # allow external C files to include "{project}.h"
+
+task audio, "convert music and sounds":
+  mmConvert "audio.nims"
+
+task build, "builds the GBA rom":
+  let args = commandLineParams()[1..^1].join(" ")
+  audioTask()
+  selfExec "c " & args & " -o:" & name & ".elf " & thisDir() / main
+  gbaStrip name & ".elf", name & ".gba"
+  gbaFix name & ".gba"
+
+task clean, "removes build files":
+  rmDir "nimcache"
+  rmDir "output"
+  rmFile name & ".gba"
+  rmFile name & ".elf"
+  rmFile name & ".elf.map"

@@ 1,42 @@
+## Maxmod Example
+## ==============
+## This example demonstrates playing music and sfx with maxmod.
+
+import natu/[video, bios, irq, tte, input, maxmod]
+
+proc main() =
+  
+  # show text on background 0
+  dispcnt.init(bg0 = true)
+  tte.initChr4c(bgnr = 0, initBgCnt(cbb = 0, sbb = 31))
+  
+  tte.write """
+    Maxmod Demo
+    Press A for sfx
+"""
+  
+  # register maxmod VBlank handler
+  irq.put(iiVBlank, maxmod.vblank)
+  
+  # init with 8 channels
+  maxmod.init(soundbankBin, 8)
+  
+  # play music
+  maxmod.start(modSpacecat, mmPlayLoop)
+  
+  while true:
+    keyPoll()
+    
+    if keyHit(kiA):
+      # play sound effect
+      let handle = maxmod.effect(sfxShoot)
+      
+      # invalidate handle (allow effect to be interrupted)
+      handle.release()
+    
+    # update maxmod
+    maxmod.frame()
+    
+    VBlankIntrWait()
+
+main()

@@ 1,33 @@
+import os, strutils
+import natu/config
+
+const main = "test_sram.nim"           # path to project file
+const name = splitFile(main).name      # name of ROM
+
+put "natu.gameTitle", "TEST_SRAM"      # max 12 chars, uppercase
+put "natu.gameCode", "2NTP"            # 4 chars, see GBATEK for info
+
+if projectPath() == thisDir() / main:
+  # This runs only when compiling the project file:
+  gbaCfg()                             # set C compiler + linker options for GBA target
+  switch "os", "standalone"
+  switch "gc", "none"
+  switch "checks", "off"               # toggle assertions, bounds checking, etc.
+  switch "path", projectDir()          # allow imports relative to the main file
+  switch "header"                      # output "{project}.h"
+  switch "nimcache", "nimcache"        # output C sources to local directory
+  switch "cincludes", nimcacheDir()    # allow external C files to include "{project}.h"
+
+task build, "builds the GBA rom":
+  let args = commandLineParams()[1..^1].join(" ")
+  selfExec "c " & args & " -o:" & name & ".elf " & thisDir() / main
+  gbaStrip name & ".elf", name & ".gba"
+  gbaFix name & ".gba"
+
+task clean, "removes build files":
+  rmDir "nimcache"
+  rmDir "output"
+  rmFile name & ".gba"
+  rmFile name & ".elf"
+  rmFile name & ".elf.map"
+  <
\ No newline at end of file

@@ 1,116 @@
+## Save Data Example
+## =================
+## This example demonstrates reading and writing to cart storage.
+## - Move the sprite with the D-Pad
+## - Press START to save the position of the sprite
+## - Power off the console
+## - Next time you launch the game, the sprite should be where you left it
+
+import natu/[bios, tte, video, irq, input, math, utils, memory]
+
+# position of the sprite on the screen
+var pos = vec2i(0, 0)
+
+# Note: Some emulators and flashcarts try to guess what kind of storage a game uses by
+#  searching for a magic string inside the ROM image.
+# See http://problemkaputt.de/gbatek.htm#gbacartbackupids for more info.
+# The string should begin on a word boundary.
+# Inline ASM appears to be a good way to achieve this:
+asm """
+.balign 4
+.string "SRAM_V111"
+"""
+
+# Validation:
+# If the start of SRAM doesn't match the header below, we can assume the game
+#  is being run for the first time, or the save file is corrupt.
+const saveHeader:cstring = "test_sram"
+
+# Note: Code that reads save data needs to be put in Work RAM.
+# To do this, we can use the codegenDecl pragma to annotate the generated C function.
+
+proc validateSave(): bool {.codegenDecl:EWRAM_CODE.} =
+  for i,c in saveHeader:
+    if sramMem[i].char != c:
+      return false
+  return true
+
+proc newSave() =
+  # Copy the header
+  for i,c in saveHeader:
+    sramMem[i] = c.uint8
+  
+  # Set the starting position for the sprite
+  sramMem[0x10] = SCREEN_WIDTH div 2
+  sramMem[0x11] = SCREEN_HEIGHT div 2
+    
+proc readSave() {.codegenDecl:EWRAM_CODE.} =
+  pos.x = sramMem[0x10].int
+  pos.y = sramMem[0x11].int
+
+proc writeSave() =
+  sramMem[0x10] = pos.x.uint8
+  sramMem[0x11] = pos.y.uint8
+
+proc main() =
+  
+  # Initialise save
+  if not validateSave():
+    newSave()
+  readSave()
+  
+  # Enable VBlank interrupt so we can wait for the next frame
+  irq.enable(iiVBlank)
+  
+  # Show background 0 and sprites
+  dispcnt.init(bg0 = true, obj = true, obj1d = true)
+  
+  # Initialise text
+  tte.initChr4c(bgnr = 0, initBgCnt(cbb = 0, sbb = 31))
+  tte.write("""
+  Natu Save Example
+  ---------------------
+  Arrows to move.
+  Press START to save
+  Press SELECT to load
+  Saved data should persist after power off.
+  """)
+  
+  # Hide all sprites
+  for obj in mitems(objMem):
+    obj.hide()
+  
+  # Fill a tile with white
+  objPalMem[0][1] = rgb5(31,31,31)
+  const numBytes = (8*8) div 2
+  memset32(addr objTileMem[0], octup(1), numBytes div sizeof(uint32))
+  
+  # Initialise a sprite to display our white tile
+  objMem[0].init(
+    pos = pos,
+    size = s8x8,
+    tid = 0,
+    pal = 0,
+  )
+  
+  while true:
+    # Update key states
+    keyPoll()
+    
+    # Move the sprite
+    if keyIsDown(kiLeft): pos.x -= 1
+    if keyIsDown(kiRight): pos.x += 1
+    if keyIsDown(kiUp): pos.y -= 1
+    if keyIsDown(kiDown): pos.y += 1
+    
+    # Save/load on button press
+    if keyHit(kiStart): writeSave()
+    if keyHit(kiSelect): readSave()
+    
+    # Wait for next frame
+    VBlankIntrWait()
+    
+    # Update sprite position
+    objMem[0].pos = pos
+
+main()