4 files changed, 90 insertions(+), 8 deletions(-)

A res/tiles.ase
A res/tiles.grit
A res/tiles.png
M src/main.c

@@ 0,0 1,1 @@
+-g -m! -p -gB4

@@ 4,33 4,114 @@
  */
 
 #include "game.h"
+#include "tiles.h"
 #include <stddef.h>
 #include <tonc.h>
 
-typedef void  colt45;
+enum LineValue {
+	START,
+	UP_ARROW,
+	DOWN_ARROW,
+	LEFT_ARROW,
+	RIGHT_ARROW,
+	NOP,
+	END,
+};
 
-colt45****** shootin_iron; // got my shootin' iron loaded
+enum LineValue lines[20] = { [0] = START };
+const size_t linesLen = sizeof(lines) / sizeof(lines[0]);
+size_t lineSelected = 0;
 
-bool vBlankTriggered = false;
+void
+redrawLines(void)
+{
+	size_t line = 0;
+	for (; line < linesLen; line++) {
+		const size_t baseID = line*32;
+		se_mem[30][baseID + 1] = ((line / 10) + 1) & 0x3ff;
+		se_mem[30][baseID + 2] = ((line % 10) + 1) & 0x3ff;
+		se_mem[30][baseID + 3] = 11;
+		if (line == lineSelected) se_mem[30][baseID + 4] = 12;
+		else  se_mem[30][baseID + 4] = 0;
+		const size_t symbolID = baseID + 5;
+		se_mem[30][symbolID] = 0;
+		se_mem[30][symbolID+1] = 0;
+		switch (lines[line]) {
+			break; case START:
+				se_mem[30][symbolID] = SE_BUILD(17, 0, 0, 0);
+				se_mem[30][symbolID+1] = SE_BUILD(18, 0, 0, 0);
+			break; case UP_ARROW: se_mem[30][symbolID] = SE_BUILD(13, 0, 0, 0);
+			break; case DOWN_ARROW: se_mem[30][symbolID] = SE_BUILD(13, 0, 0, 1);
+			break; case RIGHT_ARROW: se_mem[30][symbolID] = SE_BUILD(14, 0, 0, 0);
+			break; case LEFT_ARROW: se_mem[30][symbolID] = SE_BUILD(14, 0, 1, 0);
+			break; case NOP: se_mem[30][symbolID] = SE_BUILD(15, 0, 0, 0);
+			break; case END:
+				se_mem[30][symbolID] = SE_BUILD(19, 0, 0, 0);
+				se_mem[30][symbolID+1] = SE_BUILD(20, 0, 0, 0);
+		}
+		if (lines[line] == END) break;
+	}
+	for (line++; line < linesLen; line++) toncset16(&se_mem[30][line*32 + 1], 0, 6);
+}
 
 void
-vBlankHandler(void)
+delLine(void)
 {
-	key_poll();
+	if (lineSelected == 0 || lineSelected >= linesLen-1 || lines[lineSelected] == END) return;
+	for (size_t i = lineSelected; i < linesLen - 1; i++) lines[i] = lines[i + 1];
+	lines[linesLen - 1] = END;
 }
 
 void
-init(void)
+insertLine(enum LineValue val)
 {
-	irq_init(NULL);
-	irq_add(II_VBLANK, vBlankHandler);
+	if (lineSelected >= linesLen-1 || lines[lineSelected] == END) return;
+	lineSelected++;
+	for (size_t i = linesLen - 1; i > lineSelected && i > 0; i--) lines[i] = lines[i - 1];
+	lines[lineSelected] = val;
+	lines[linesLen - 1] = END;
+	if (lineSelected == linesLen-1) lineSelected--;
 }
 
 int
 main(void)
 {
+	irq_init(NULL);
+	irq_add(II_VBLANK, NULL);
+	VBlankIntrWait();
+
+	LZ77UnCompVram(tilesTiles, &tile_mem[0][0]);
+	LZ77UnCompVram(tilesPal, pal_bg_mem);
+
+	se_fill(&se_mem[31][0], SE_BUILD(0, 0, 0, 0));
+	se_fill(&se_mem[30][0], SE_BUILD(0, 0, 0, 0));
+
+	for (size_t line = 1; line < linesLen; line++) lines[line] = END;
+
+	// Dividing line between program area and whatever would be in the play area
+	for (size_t row = 0; row < 32; row++) se_mem[31][(row*32)+8] = SE_BUILD(16, 0, 0, 0);
+
+	REG_BG0CNT = BG_CBB(0) | BG_SBB(31) | BG_4BPP | BG_REG_32x32;
+	REG_BG0HOFS = 0; REG_BG0VOFS = 0;
+	REG_BG1CNT = BG_CBB(0) | BG_SBB(30) | BG_4BPP | BG_REG_32x32;
+	REG_BG1HOFS = 0; REG_BG1VOFS = 0;
+	REG_DISPCNT = DCNT_MODE0 | DCNT_BG0 | DCNT_BG1;
+
 	while (1) {
 		VBlankIntrWait();
+		key_poll();
+		if (key_hit(KEY_B)) delLine();
+		else if (key_held(KEY_L)) {
+			if (key_hit(KEY_UP) && lineSelected > 0) lineSelected--;
+			else if (key_hit(KEY_DOWN) && lineSelected < linesLen-2 && lines[lineSelected+1] != END) {
+				lineSelected++;
+			}
+		} else if (key_hit(KEY_A)) insertLine(NOP);
+		else if (key_hit(KEY_UP)) insertLine(UP_ARROW);
+		else if (key_hit(KEY_DOWN)) insertLine(DOWN_ARROW);
+		else if (key_hit(KEY_LEFT)) insertLine(LEFT_ARROW);
+		else if (key_hit(KEY_RIGHT)) insertLine(RIGHT_ARROW);
+		redrawLines();
 	}
 	return 0;
 }