~zanneth/zge: Add test program, fix Linux issues

30 files changed, 840 insertions(+), 2557 deletions(-)

M .gitignore
M CMakeLists.txt
D ZGE.xcodeproj/project.pbxproj
D ZGE.xcodeproj/project.xcworkspace/contents.xcworkspacedata
D cmake/Modules/FindSDL2.cmake
M src/zge/core/display.cpp
M src/zge/core/run_loop.cpp
M src/zge/core/schedulable.hpp
M src/zge/renderer/render_context.cpp
M src/zge/renderer/render_context.h
M src/zge/util/logger.cpp
M src/zge/util/util.cpp
A test/resources/Monaco.dfont
A test/src/application.cpp
A test/src/application.h
A test/src/fps_node.cpp
A test/src/fps_node.h
A test/src/line_scene.cpp
A test/src/line_scene.h
A test/src/main.cpp
A test/src/multiscene.cpp
A test/src/multiscene.h
A test/src/node_storm.cpp
A test/src/node_storm.h
A test/src/persp_cube_scene.cpp
A test/src/persp_cube_scene.h
A test/src/rot_cube_scene.cpp
A test/src/rot_cube_scene.h
A test/src/text_scene.cpp
A test/src/text_scene.h

M .gitignore => .gitignore +3 -1

@@ 1,11 1,13 @@
 lib
+build
 
 # cmake
 CMakeCache.txt
 CMakeFiles
+CMakeLists.txt.user
 CMakeScripts
+CTestTestfile.cmake
 Makefile
 cmake_install.cmake
 install_manifest.txt
-CTestTestfile.cmake

M CMakeLists.txt => CMakeLists.txt +29 -27

@@ 1,19 1,23 @@
-cmake_minimum_required(VERSION 3.0)
-
-include(CheckCXXCompilerFlag)
-include(FindPkgConfig)
+cmake_minimum_required(VERSION 3.5)
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/")
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
 project(ZGE C CXX)
 
-file(GLOB_RECURSE SOURCES "src/zge/*.cpp")
-file(GLOB_RECURSE HEADERS "src/zge/*.h")
+################################################################################
+# zge library
+################################################################################
 
-add_library(zge SHARED ${SOURCES} ${HEADERS})
+file(GLOB_RECURSE ZGE_SOURCES "src/zge/*.cpp")
+file(GLOB_RECURSE ZGE_HEADERS "src/zge/*.h")
+
+add_library(zge SHARED ${ZGE_SOURCES} ${ZGE_HEADERS})
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src/zge/audio)
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src/zge/contrib)


@@ 31,27 35,15 @@ target_include_directories(zge
     PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src
 )
 
-set(CMAKE_CXX_COMPILER "clang++")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
-
-# OpenGL/ES
-set(OpenGL_GL_PREFERENCE "GLVND")
-find_package(OpenGL)
-
-if (OPENGL_FOUND)
-    include_directories(${OPENGL_INCLUDE_DIR})
-    target_link_libraries(zge ${OPENGL_LIBRARIES})
-else()
-    find_package(OpenGLES2)
-    include_directories(${OPENGLES2_INCLUDE_DIR})
-    target_link_libraries(zge ${OPENGLES2_LIBRARIES})
-    add_definitions(-DOPENGL_ES -DOPENGL_ES2)
-endif()
+# GLEW
+find_package(GLEW REQUIRED)
+include_directories(${GLEW_INCLUDE_DIRS})
+target_link_libraries(zge ${GLEW_LIBRARIES})
 
 # SDL
 find_package(SDL2 REQUIRED)
-include_directories(${SDL2_INCLUDE_DIR})
-target_link_libraries(zge ${SDL2_LIBRARY})
+include_directories(${SDL2_INCLUDE_DIRS})
+target_link_libraries(zge ${SDL2_LIBRARIES})
 
 # SDL_Image
 find_package(SDL2_image REQUIRED)


@@ 60,7 52,7 @@ target_link_libraries(zge ${SDL2_IMAGE_LIBRARIES})
 
 # lib3ds
 find_package(Lib3ds REQUIRED)
-include_directories(${LIB3DS_INCLUDE_DIR})
+include_directories(${LIB3DS_INCLUDE_DIRS})
 target_link_libraries(zge ${LIB3DS_LIBRARY})
 
 # Freetype


@@ 72,7 64,17 @@ target_link_libraries(zge ${FREETYPE_LIBRARIES})
 find_package(Eigen REQUIRED)
 include_directories(${EIGEN_INCLUDE_DIRS})
 
-install (FILES ${HEADERS}
+install(FILES ${ZGE_HEADERS}
    DESTINATION include/zge
    COMPONENT devel
 )
+
+################################################################################
+# test program
+################################################################################
+
+file(GLOB_RECURSE ZGETEST_SOURCES "test/src/*.cpp")
+file(GLOB_RECURSE ZGETEST_HEADERS "test/src/*.h")
+
+add_executable(zgetest ${ZGETEST_SOURCES} ${ZGETEST_HEADERS})
+target_link_libraries(zgetest PRIVATE zge)

D ZGE.xcodeproj/project.pbxproj => ZGE.xcodeproj/project.pbxproj +0 -2345

@@ 1,2345 0,0 @@
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-# This module defines
-# SDL2_LIBRARY, the name of the library to link against
-# SDL2_FOUND, if false, do not try to link to SDL2
-# SDL2_INCLUDE_DIR, where to find SDL.h
-#
-# This module responds to the the flag:
-# SDL2_BUILDING_LIBRARY
-# If this is defined, then no SDL2main will be linked in because
-# only applications need main().
-# Otherwise, it is assumed you are building an application and this
-# module will attempt to locate and set the the proper link flags
-# as part of the returned SDL2_LIBRARY variable.
-#
-# Don't forget to include SDLmain.h and SDLmain.m your project for the
-# OS X framework based version. (Other versions link to -lSDL2main which
-# this module will try to find on your behalf.) Also for OS X, this
-# module will automatically add the -framework Cocoa on your behalf.
-#
-#
-# Additional Note: If you see an empty SDL2_LIBRARY_TEMP in your configuration
-# and no SDL2_LIBRARY, it means CMake did not find your SDL2 library
-# (SDL2.dll, libsdl2.so, SDL2.framework, etc).
-# Set SDL2_LIBRARY_TEMP to point to your SDL2 library, and configure again.
-# Similarly, if you see an empty SDL2MAIN_LIBRARY, you should set this value
-# as appropriate. These values are used to generate the final SDL2_LIBRARY
-# variable, but when these values are unset, SDL2_LIBRARY does not get created.
-#
-#
-# $SDL2DIR is an environment variable that would
-# correspond to the ./configure --prefix=$SDL2DIR
-# used in building SDL2.
-# l.e.galup  9-20-02
-#
-# Modified by Eric Wing.
-# Added code to assist with automated building by using environmental variables
-# and providing a more controlled/consistent search behavior.
-# Added new modifications to recognize OS X frameworks and
-# additional Unix paths (FreeBSD, etc).
-# Also corrected the header search path to follow "proper" SDL guidelines.
-# Added a search for SDL2main which is needed by some platforms.
-# Added a search for threads which is needed by some platforms.
-# Added needed compile switches for MinGW.
-#
-# On OSX, this will prefer the Framework version (if found) over others.
-# People will have to manually change the cache values of
-# SDL2_LIBRARY to override this selection or set the CMake environment
-# CMAKE_INCLUDE_PATH to modify the search paths.
-#
-# Note that the header path has changed from SDL2/SDL.h to just SDL.h
-# This needed to change because "proper" SDL convention
-# is #include "SDL.h", not <SDL2/SDL.h>. This is done for portability
-# reasons because not all systems place things in SDL2/ (see FreeBSD).
-
-#=============================================================================
-# Copyright 2003-2009 Kitware, Inc.
-#
-# Distributed under the OSI-approved BSD License (the "License");
-# see accompanying file Copyright.txt for details.
-#
-# This software is distributed WITHOUT ANY WARRANTY; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the License for more information.
-#=============================================================================
-# (To distribute this file outside of CMake, substitute the full
-#  License text for the above reference.)
-
-SET(SDL2_SEARCH_PATHS
-	~/Library/Frameworks
-	/Library/Frameworks
-	/usr/local
-	/usr
-	/sw # Fink
-	/opt/local # DarwinPorts
-	/opt/csw # Blastwave
-	/opt
-)
-
-FIND_PATH(SDL2_INCLUDE_DIR SDL.h
-	HINTS
-	$ENV{SDL2DIR}
-	PATH_SUFFIXES include/SDL2 include
-	PATHS ${SDL2_SEARCH_PATHS}
-)
-
-FIND_LIBRARY(SDL2_LIBRARY_TEMP
-	NAMES SDL2
-	HINTS
-	$ENV{SDL2DIR}
-	PATH_SUFFIXES lib64 lib
-	PATHS ${SDL2_SEARCH_PATHS}
-)
-
-IF(NOT SDL2_BUILDING_LIBRARY)
-	IF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework")
-		# Non-OS X framework versions expect you to also dynamically link to
-		# SDL2main. This is mainly for Windows and OS X. Other (Unix) platforms
-		# seem to provide SDL2main for compatibility even though they don't
-		# necessarily need it.
-		FIND_LIBRARY(SDL2MAIN_LIBRARY
-			NAMES SDL2main
-			HINTS
-			$ENV{SDL2DIR}
-			PATH_SUFFIXES lib64 lib
-			PATHS ${SDL2_SEARCH_PATHS}
-		)
-	ENDIF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework")
-ENDIF(NOT SDL2_BUILDING_LIBRARY)
-
-# SDL2 may require threads on your system.
-# The Apple build may not need an explicit flag because one of the
-# frameworks may already provide it.
-# But for non-OSX systems, I will use the CMake Threads package.
-IF(NOT APPLE)
-	FIND_PACKAGE(Threads)
-ENDIF(NOT APPLE)
-
-# MinGW needs an additional library, mwindows
-# It's total link flags should look like -lmingw32 -lSDL2main -lSDL2 -lmwindows
-# (Actually on second look, I think it only needs one of the m* libraries.)
-IF(MINGW)
-	SET(MINGW32_LIBRARY mingw32 CACHE STRING "mwindows for MinGW")
-ENDIF(MINGW)
-
-IF(SDL2_LIBRARY_TEMP)
-	# For SDL2main
-	IF(NOT SDL2_BUILDING_LIBRARY)
-		IF(SDL2MAIN_LIBRARY)
-			SET(SDL2_LIBRARY_TEMP ${SDL2MAIN_LIBRARY} ${SDL2_LIBRARY_TEMP})
-		ENDIF(SDL2MAIN_LIBRARY)
-	ENDIF(NOT SDL2_BUILDING_LIBRARY)
-
-	# For OS X, SDL2 uses Cocoa as a backend so it must link to Cocoa.
-	# CMake doesn't display the -framework Cocoa string in the UI even
-	# though it actually is there if I modify a pre-used variable.
-	# I think it has something to do with the CACHE STRING.
-	# So I use a temporary variable until the end so I can set the
-	# "real" variable in one-shot.
-	IF(APPLE)
-		SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework Cocoa")
-	ENDIF(APPLE)
-
-	# For threads, as mentioned Apple doesn't need this.
-	# In fact, there seems to be a problem if I used the Threads package
-	# and try using this line, so I'm just skipping it entirely for OS X.
-	IF(NOT APPLE)
-		SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT})
-	ENDIF(NOT APPLE)
-
-	# For MinGW library
-	IF(MINGW)
-		SET(SDL2_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARY_TEMP})
-	ENDIF(MINGW)
-
-	# Set the final string here so the GUI reflects the final state.
-	SET(SDL2_LIBRARY ${SDL2_LIBRARY_TEMP} CACHE STRING "Where the SDL2 Library can be found")
-	# Set the temp variable to INTERNAL so it is not seen in the CMake GUI
-	SET(SDL2_LIBRARY_TEMP "${SDL2_LIBRARY_TEMP}" CACHE INTERNAL "")
-ENDIF(SDL2_LIBRARY_TEMP)
-
-INCLUDE(FindPackageHandleStandardArgs)
-
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2 REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR)

M src/zge/core/display.cpp => src/zge/core/display.cpp +6 -6

@@ 88,7 88,7 @@ void ZDisplay::_init_window()
     
     // setup some parameters required for using OpenGL with SDL
     SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);             // request 24-bit depth buffer
-    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);            // request double-buffering
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 2);            // request double-buffering
     SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL, 1);      // request hardware acceleration
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);   // request OpenGL version 3.2
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);


@@ 113,11 113,11 @@ void ZDisplay::_init_window()
     
     // create the window
     _impl->window = SDL_CreateWindow(_display_mode.window_title.c_str(),
-                               SDL_WINDOWPOS_UNDEFINED,
-                               SDL_WINDOWPOS_UNDEFINED,
-                               width,
-                               height,
-                               sdlflags);
+                                     SDL_WINDOWPOS_UNDEFINED,
+                                     SDL_WINDOWPOS_UNDEFINED,
+                                     width,
+                                     height,
+                                     sdlflags);
     if (_impl->window == nullptr) {
         ZLogger::log_error("Could not create SDL window. %s", SDL_GetError());
     }

M src/zge/core/run_loop.cpp => src/zge/core/run_loop.cpp +5 -5

@@ 127,11 127,11 @@ static bool _configure_render_thread(void)
         .preemptible = FALSE
     };
     
-    kern_return_t policySetResult = thread_policy_set(pthread_mach_thread_np(pthread_self()),
-                                                      THREAD_TIME_CONSTRAINT_POLICY,
-                                                      (thread_policy_t)&policy,
-                                                      THREAD_TIME_CONSTRAINT_POLICY_COUNT);
-    return (policySetResult == 0);
+    kern_return_t policy_set_result = thread_policy_set(pthread_mach_thread_np(pthread_self()),
+                                                        THREAD_TIME_CONSTRAINT_POLICY,
+                                                        (thread_policy_t)&policy,
+                                                        THREAD_TIME_CONSTRAINT_POLICY_COUNT);
+    return (policy_set_result == 0);
 #else
     // TODO: Configure render thread for other platforms.
     return false;

M src/zge/core/schedulable.hpp => src/zge/core/schedulable.hpp +1 -1

@@ 8,7 8,7 @@
 #include <zge/core/schedulable.h>
 
 #ifndef __ZGE_ZSCHEDULABLE_IMPL_GUARD__
-#error "Do not include this file directly. Include schedulable.h instead.
+#error "Do not include this file directly. Include schedulable.h instead."
 #endif
 
 ZGE_BEGIN_NAMESPACE

M src/zge/renderer/render_context.cpp => src/zge/renderer/render_context.cpp +10 -0

@@ 122,6 122,11 @@ ZElementGraphicsBufferRef ZRenderContext::create_elements_buffer()
 ZShaderProgramRef ZRenderContext::create_shader_program()
 {
     uint32_t handle = glCreateProgram();
+    if (handle == 0) {
+        ZException exception(ZENGINE_EXCEPTION_CODE);
+        exception.extra_info = "Failed to create shader program.";
+        throw exception;
+    }
     
     auto deleter = [](uint32_t handle) {
         glDeleteProgram(handle);


@@ 195,6 200,11 @@ ZShaderRef ZRenderContext::create_shader(ZShaderType type)
     
     if (gltype != 0) {
         uint32_t handle = glCreateShader(gltype);
+        if (handle == 0) {
+            ZException exception(ZENGINE_EXCEPTION_CODE);
+            exception.description = "Failed to create shader.";
+            throw exception;
+        }
         
         auto deleter = [](uint32_t handle) {
             glDeleteShader(handle);

M src/zge/renderer/render_context.h => src/zge/renderer/render_context.h +2 -2

@@ 83,10 83,10 @@ public:
     ZElementGraphicsBufferRef create_elements_buffer();
     
     /// Allocates a shader program.
-    ZShaderProgramRef create_shader_program();
+    ZShaderProgramRef create_shader_program() noexcept(false);
     
     /// Allocates a shader.
-    ZShaderRef create_shader(ZShaderType type);
+    ZShaderRef create_shader(ZShaderType type) noexcept(false);
     
     /// Allocates a texture object.
     ZTextureRef create_texture(ZImageRef image);

M src/zge/util/logger.cpp => src/zge/util/logger.cpp +1 -0

@@ 6,6 6,7 @@
  */
  
 #include <zge/util/logger.h>
+#include <cstdarg>
 
 ZGE_BEGIN_NAMESPACE

M src/zge/util/util.cpp => src/zge/util/util.cpp +1 -0

@@ 8,6 8,7 @@
 #include <zge/util/util.h>
 #include <zge/util/exception.h>
 #include <chrono>
+#include <cstdarg>
 #include <cstdio>
 #include <cmath>
 #include <sstream>

A test/resources/Monaco.dfont => test/resources/Monaco.dfont +0 -0

A test/src/application.cpp => test/src/application.cpp +58 -0

@@ 0,0 1,58 @@
+//
+//  application.cpp
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 11/13/13.
+//  Copyright (c) 2013 Charles Magahern. All rights reserved.
+//
+
+#include "application.h"
+#include "fps_node.h"
+#include "line_scene.h"
+#include "node_storm.h"
+#include "persp_cube_scene.h"
+#include "rot_cube_scene.h"
+#include "text_scene.h"
+#include <memory>
+#include <thread>
+
+using namespace zge;
+
+TestApp::TestApp(int argc, const char **argv) : ZApplication(argc, argv),
+    _engine(nullptr),
+    _root_scene(nullptr)
+{}
+
+void TestApp::application_ready()
+{
+    ZRunloopRef runloop = get_main_runloop();
+    
+    _engine = ZEngine::create();
+    _engine->initialize(runloop);
+    _engine->set_application(this);
+    
+    // setup display
+    ZDisplayMode display_mode;
+    display_mode.windowed = true;
+    display_mode.window_title = "ZGE Example";
+    display_mode.width = 1280;
+    display_mode.height = 800;
+    
+    ZRenderManagerRef renderman = _engine->get_render_manager();
+    renderman->create_display(display_mode);
+    
+    ZRect viewport = _engine->get_viewport_rect();
+    std::vector<ZSceneRef> scenes = {
+        std::make_shared<RotatingCubeScene>(viewport),
+        std::make_shared<PerspectiveCubeScene>(viewport),
+        std::make_shared<TextScene>(viewport),
+        std::make_shared<LineScene>(viewport),
+        std::make_shared<NodeStormScene>(viewport)
+    };
+    
+    _root_scene = Multiscene::create(viewport, scenes);
+    _engine->set_current_scene(_root_scene);
+    
+    auto fps_node = std::make_shared<FPSNode>(_engine);
+    _root_scene->add_child(fps_node);
+}

A test/src/application.h => test/src/application.h +22 -0

@@ 0,0 1,22 @@
+//
+//  application.h
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 11/13/13.
+//  Copyright (c) 2013 Charles Magahern. All rights reserved.
+//
+
+#pragma once
+
+#include <zge/zge.h>
+#include "multiscene.h"
+
+class TestApp : public zge::ZApplication {
+public:
+    TestApp(int argc, const char **argv);
+    void application_ready() override;
+    
+private:
+    zge::ZEngineRef _engine;
+    MultisceneRef _root_scene;
+};

A test/src/fps_node.cpp => test/src/fps_node.cpp +48 -0

@@ 0,0 1,48 @@
+//
+//  fps_node.cpp
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 12/9/15.
+//  Copyright © 2015 Zanneth. All rights reserved.
+//
+
+#include "fps_node.h"
+
+FPSNode::FPSNode(zge::ZEngineRef engine) :
+    _engine(engine),
+    _text_node(zge::ZTextNode::create("000 FPS")),
+    _timer(zge::ZTimer::create(std::bind(&FPSNode::_update, this, std::placeholders::_1)))
+{
+    _timer->set_repeats(true);
+    _timer->set_interval(zge::ZTimeInterval(0.5));
+    engine->get_application()->get_main_runloop()->schedule(_timer);
+    
+//    zge::ZFontRef font = zge::ZFont::create("/System/Library/Fonts/Monaco.dfont", 32);
+    zge::ZFontRef font = zge::ZFont::create("/usr/share/fonts/truetype/inconsolata/Inconsolata.otf", 32);
+    _text_node->set_font(font);
+    _text_node->set_text_color(zge::ZColor::white);
+    this->add_child(_text_node);
+    
+    zge::ZRect viewport = _engine->get_viewport_rect();
+    zge::ZRect text_node_bounds = _text_node->get_bounds();
+    _text_node->set_position({
+        viewport.size.width - text_node_bounds.size.width - 20.0f,
+        viewport.size.height - text_node_bounds.size.height - 20.0f
+    });
+    
+    zge::ZOrthoCameraRef camera = zge::ZOrthoCamera::create();
+    camera->set_clipping_rect({0.0, 0.0, viewport.size.width, viewport.size.height});
+    this->set_camera(camera);
+}
+
+FPSNode::~FPSNode()
+{
+    _timer->invalidate();
+}
+
+void FPSNode::_update(zge::ZTimerRef timer)
+{
+    const float fps = _engine->get_render_manager()->get_current_frames_per_second();
+    const std::string fps_str = zge::ZUtil::format("%d FPS", (int)fps);
+    _text_node->set_text(fps_str);
+}

A test/src/fps_node.h => test/src/fps_node.h +25 -0

@@ 0,0 1,25 @@
+//
+//  fps_node.h
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 12/9/15.
+//  Copyright © 2015 Zanneth. All rights reserved.
+//
+
+#pragma once
+
+#include <zge/zge.h>
+
+class FPSNode : public zge::ZNode {
+public:
+    FPSNode(zge::ZEngineRef engine);
+    ~FPSNode();
+    
+private:
+    void _update(zge::ZTimerRef timer);
+    
+private:
+    zge::ZEngineRef     _engine;
+    zge::ZTextNodeRef   _text_node;
+    zge::ZTimerRef      _timer;
+};

A test/src/line_scene.cpp => test/src/line_scene.cpp +35 -0

@@ 0,0 1,35 @@
+//
+//  line_scene.cpp
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 2/2/15.
+//  Copyright (c) 2015 Zanneth. All rights reserved.
+//
+
+#include "line_scene.h"
+#include <cmath>
+
+using namespace zge;
+
+LineScene::LineScene(const ZRect &rect) :
+    _viewport(rect)
+{
+    set_name("Lines");
+    
+    ZOrthoCameraRef camera = ZOrthoCamera::create();
+    camera->set_clipping_rect({0.0, 0.0, _viewport.size.width, _viewport.size.height});
+    set_camera(camera);
+    
+    std::vector<ZVector> points;
+    size_t points_to_draw = _viewport.size.width;
+    float half_viewport_ht = _viewport.size.height / 2.0;
+    for (unsigned i = 0; i < points_to_draw; ++i) {
+        float yval = half_viewport_ht + (std::sin(float(i) / 20.0) * half_viewport_ht);
+        points.push_back({float(i), yval, 0.0});
+    }
+    
+    ZLineRef line = ZLine::create(points);
+    line->add_material(ZColorMaterial::create(ZColor::red));
+    ZNodeRef line_node = ZNode::create(line);
+    add_child(line_node);
+}

A test/src/line_scene.h => test/src/line_scene.h +19 -0

@@ 0,0 1,19 @@
+//
+//  line_scene.h
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 2/2/15.
+//  Copyright (c) 2015 Zanneth. All rights reserved.
+//
+
+#pragma once
+
+#include <zge/zge.h>
+
+class LineScene : public zge::ZScene {
+public:
+    LineScene(const zge::ZRect &rect);
+    
+private:
+    zge::ZRect _viewport;
+};

A test/src/main.cpp => test/src/main.cpp +17 -0

@@ 0,0 1,17 @@
+//
+//  main.cpp
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 10/17/14.
+//  Copyright (c) 2014 Zanneth. All rights reserved.
+//
+
+#include "application.h"
+
+int main(int argc, const char **argv)
+{
+    TestApp app(argc, argv);
+    app.run();
+    
+    return 0;
+}

A test/src/multiscene.cpp => test/src/multiscene.cpp +183 -0

@@ 0,0 1,183 @@
+//
+//  multiscene.cpp
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 2/13/15.
+//  Copyright (c) 2015 Zanneth. All rights reserved.
+//
+
+#include "multiscene.h"
+#include <cmath>
+
+using namespace zge;
+
+class PickerCell : public zge::ZSpriteNode {
+public:
+    PickerCell(ZSceneRef scene, ZFontRef font);
+    
+    void layout();
+    
+    bool is_selected() const;
+    void set_selected(bool selected);
+    
+    ZSceneRef get_scene() const;
+    ZFontRef get_font() const;
+    
+private:
+    ZSceneRef _scene;
+    ZFontRef _font;
+    ZTextNodeRef _textnode;
+    bool _selected;
+};
+
+ZGE_DEFINE_SREF_TYPE(PickerCell);
+
+Multiscene::Multiscene(const ZRect &viewport,
+                       const std::vector<ZSceneRef> scenes) :
+    _viewport(viewport),
+    _scenes(scenes),
+    _current_scene(nullptr),
+    _scene_container(ZNode::create()),
+    _picker_panel(nullptr)
+{
+    add_child(_scene_container);
+    _setup_picker_panel();
+    
+    if (_scenes.size() > 0) {
+        _activate_scene(_scenes[0]);
+    }
+}
+
+std::vector<ZSceneRef> Multiscene::get_child_scenes() const
+{
+    return _scenes;
+}
+
+void Multiscene::handle_input_event(const ZEvent &event)
+{
+    if (event.type == ZMOUSE_DOWN_EVENT) {
+        ZPoint2D clickpos = event.mouse_event.location;
+        PickerCellRef prev_picked_cell = nullptr;
+        bool selected_new_cell = false;
+        
+        for (PickerCellRef picker_cell : _picker_cells) {
+            ZRect cell_frame = picker_cell->get_bounds();
+            if (cell_frame.contains_point(clickpos)) {
+                picker_cell->set_selected(true);
+                _activate_scene(picker_cell->get_scene());
+                selected_new_cell = true;
+            } else if (picker_cell->is_selected()) {
+                prev_picked_cell = picker_cell;
+            }
+        }
+        
+        if (selected_new_cell && prev_picked_cell) {
+            prev_picked_cell->set_selected(false);
+        }
+    }
+    
+    ZScene::handle_input_event(event);
+}
+
+#pragma mark - Internal
+
+void Multiscene::_setup_picker_panel()
+{
+    if (_picker_panel) {
+        _picker_panel->remove_from_parent();
+        _picker_panel = nullptr;
+    }
+    
+    std::vector<PickerCellRef> picker_cells;
+    ZSpriteNodeRef picker = ZSpriteNode::create();
+    picker->set_color(ZColor(0.2, 0.2, 0.2, 0.2));
+    picker->set_position(ZVector::zero);
+    picker->set_size({_viewport.size.width / 7.0f, _viewport.size.height});
+    
+    ZOrthoCameraRef camera = ZOrthoCamera::create();
+    camera->set_clipping_rect({0.0, 0.0, _viewport.size.width, _viewport.size.height});
+    picker->set_camera(camera);
+    
+    const ZResourceBundle *bundle = ZResourceBundle::get_main_bundle();
+//    ZFontRef font = ZFont::create(bundle->get_path_for_resource("Monaco.dfont"), 9.5);
+    ZFontRef font = ZFont::create("/usr/share/fonts/truetype/inconsolata/Inconsolata.otf", 9.5);
+
+    const float vpadding = 5.0f;
+    const float cellheight = 20.0f;
+    float cur_y = vpadding;
+    
+    for (ZSceneRef scene : _scenes) {
+        PickerCellRef cell = std::make_shared<PickerCell>(scene, font);
+        cell->set_position({0.0, cur_y});
+        cell->set_size({picker->get_size().width, cellheight});
+        cell->layout();
+        
+        picker->add_child(cell);
+        picker_cells.push_back(cell);
+        
+        if (scene == _scenes[0]) {
+            cell->set_selected(true);
+        }
+        
+        cur_y += cellheight + vpadding;
+    }
+    
+    add_child(picker);
+    _picker_panel = picker;
+    _picker_cells = picker_cells;
+}
+
+void Multiscene::_activate_scene(ZSceneRef scene)
+{
+    if (_current_scene) {
+        _current_scene->on_exit();
+        _current_scene->remove_from_parent();
+    }
+    
+    _current_scene = scene;
+    
+    if (_current_scene) {
+        _scene_container->add_child(_current_scene);
+        _current_scene->on_enter();
+    }
+}
+
+#pragma mark - PickerCell
+
+PickerCell::PickerCell(ZSceneRef scene, ZFontRef font) :
+    _scene(scene),
+    _font(font)
+{
+    ZTextNodeRef textnode = ZTextNode::create(scene->get_name(), font);
+    textnode->set_text_color(ZColor::white);
+    _textnode = textnode;
+    
+    add_child(_textnode);
+    set_selected(false);
+}
+
+void PickerCell::layout()
+{
+    ZSize2D size = get_size();
+    _textnode->set_position(ZVector{
+        5.0,
+        std::rintf(size.height / 2.0 - _textnode->get_bounds().size.height / 1.2)
+    });
+}
+
+void PickerCell::set_selected(bool selected)
+{
+    if (selected) {
+        set_color(ZColor::white);
+        _textnode->set_text_color(ZColor::black);
+    } else {
+        set_color(ZColor(0.4, 0.4, 0.4, 0.4));
+        _textnode->set_text_color(ZColor::white);
+    }
+    
+    _selected = selected;
+}
+
+ZSceneRef PickerCell::get_scene() const { return _scene; }
+ZFontRef PickerCell::get_font() const { return _font; }
+bool PickerCell::is_selected() const { return _selected; }

A test/src/multiscene.h => test/src/multiscene.h +41 -0

@@ 0,0 1,41 @@
+//
+//  multiscene.h
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 2/13/15.
+//  Copyright (c) 2015 Zanneth. All rights reserved.
+//
+
+#pragma once
+
+#include <zge/zge.h>
+
+ZGE_FORWARD_DECLARE_SREF(PickerCell);
+
+class Multiscene : public zge::ZScene {
+public:
+    Multiscene(const zge::ZRect &viewport,
+               const std::vector<zge::ZSceneRef> scenes);
+    
+    ZGE_DEFINE_SREF_FUNCTIONS(Multiscene);
+    
+    std::vector<zge::ZSceneRef> get_child_scenes() const;
+    
+    void handle_input_event(const zge::ZEvent &event) override;
+    
+private:
+    void _setup_picker_panel();
+    void _activate_scene(zge::ZSceneRef scene);
+    
+private:
+    zge::ZRect _viewport;
+    std::vector<zge::ZSceneRef> _scenes;
+    
+    zge::ZSceneRef _current_scene;
+    zge::ZNodeRef _scene_container;
+    
+    zge::ZNodeRef _picker_panel;
+    std::vector<PickerCellRef> _picker_cells;
+};
+
+ZGE_DEFINE_SREF_TYPE(Multiscene);

A test/src/node_storm.cpp => test/src/node_storm.cpp +81 -0

@@ 0,0 1,81 @@
+//
+//  node_storm.cpp
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 6/23/15.
+//  Copyright © 2015 Zanneth. All rights reserved.
+//
+
+#include "node_storm.h"
+#include <random>
+
+#define NODE_COUNT 100
+#define NODE_DIMENSIONS 50.0
+
+using namespace zge;
+
+MovingNode::MovingNode(const zge::ZVector &velocity) :
+    _velocity(velocity)
+{}
+
+const zge::ZVector& MovingNode::get_velocity() const
+{
+    return _velocity;
+}
+
+void MovingNode::set_velocity(const zge::ZVector &velocity)
+{
+    _velocity = velocity;
+}
+
+// -----------------------------------------------------------------------------
+
+NodeStormScene::NodeStormScene(const ZRect &viewport) :
+    _viewport(viewport)
+{
+    set_name("Node Storm");
+    
+    ZOrthoCameraRef camera = ZOrthoCamera::create();
+    camera->set_clipping_rect({0.0, 0.0, _viewport.size.width, _viewport.size.height});
+    set_camera(camera);
+    
+    std::vector<MovingNodeRef> nodes;
+    std::random_device rd;
+    std::uniform_real_distribution<float> vel_dist(-1.0, 1.0);
+    std::uniform_real_distribution<float> x_dist(0.0, _viewport.size.width - NODE_DIMENSIONS);
+    std::uniform_real_distribution<float> y_dist(0.0, _viewport.size.height - NODE_DIMENSIONS);
+    
+    for (unsigned i = 0; i < NODE_COUNT; ++i) {
+        ZVector velocity({vel_dist(rd), vel_dist(rd), 0.0});
+        MovingNodeRef node = MovingNode::create(velocity);
+        node->set_color(ZColor::random_color());
+        node->set_size({NODE_DIMENSIONS, NODE_DIMENSIONS});
+        node->set_position({x_dist(rd), y_dist(rd)});
+        nodes.push_back(node);
+        add_child(node);
+    }
+    _nodes = nodes;
+}
+
+void NodeStormScene::update()
+{
+    ZScene::update();
+    
+    for (MovingNodeRef node : _nodes) {
+        const ZSize2D size = node->get_size();
+        const ZVector velocity = node->get_velocity();
+        
+        ZVector pos = node->get_position();
+        pos += velocity;
+        
+        if (pos.x() + size.width > _viewport.size.width || pos.x() < 0.0) {
+            node->set_velocity({-velocity.get_x(), velocity.get_y(), 0.0});
+        }
+        
+        if (pos.y() + size.height > _viewport.size.height || pos.y() < 0.0) {
+            node->set_velocity({velocity.get_x(), -velocity.get_y(), 0.0});
+        }
+        
+        node->set_position(pos);
+    }
+}

A test/src/node_storm.h => test/src/node_storm.h +39 -0

@@ 0,0 1,39 @@
+//
+//  node_storm.h
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 6/23/15.
+//  Copyright © 2015 Zanneth. All rights reserved.
+//
+
+#pragma once
+
+#include <zge/zge.h>
+
+class MovingNode : public zge::ZSpriteNode {
+public:
+    MovingNode(const zge::ZVector &velocity);
+    
+    ZGE_DEFINE_SREF_FUNCTIONS(MovingNode);
+    
+    const zge::ZVector& get_velocity() const;
+    void                set_velocity(const zge::ZVector &velocity);
+    
+private:
+    zge::ZVector _velocity;
+};
+
+ZGE_DEFINE_SREF_TYPE(MovingNode);
+
+// -----------------------------------------------------------------------------
+
+class NodeStormScene : public zge::ZScene {
+public:
+    NodeStormScene(const zge::ZRect &viewport);
+    
+    void update() override;
+    
+private:
+    zge::ZRect                 _viewport;
+    std::vector<MovingNodeRef> _nodes;
+};

A test/src/persp_cube_scene.cpp => test/src/persp_cube_scene.cpp +76 -0

@@ 0,0 1,76 @@
+//
+//  persp_cube_scene.cpp
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 9/14/14.
+//  Copyright (c) 2014 Charles Magahern. All rights reserved.
+//
+
+#include "persp_cube_scene.h"
+
+using namespace zge;
+
+PerspectiveCubeScene::PerspectiveCubeScene(const ZRect &viewport) :
+    _viewport(viewport),
+    _cube1(nullptr),
+    _cube2(nullptr)
+{
+    set_name("Perspective Cubes");
+    
+    // setup camera
+    Z3DCameraRef camera = Z3DCameraRef(new Z3DCamera);
+    camera->set_position({0.0, 0.0, 5.0});
+    camera->set_look({0.0, 0.0, 0.0});
+    camera->set_viewport_rect(_viewport);
+    set_camera(camera);
+    
+    // add a model
+    _cube1 = ZNode::create(ZCube::create());
+    _cube1->set_name("cube 1");
+    _cube1->set_position({-2.0, 0.0, 0.0});
+    add_child(_cube1);
+    
+    _cube1_material = ZColorMaterialRef(new ZColorMaterial);
+    _cube1_material->set_color(ZColor::red);
+    _cube1->get_geometry()->add_material(_cube1_material);
+    
+    // add another model
+    ZCubeRef cube_geom = ZCube::create();
+    _cube2 = ZNode::create(cube_geom);
+    _cube2->set_name("cube 2");
+    _cube2->set_position({2.0, 0.0, 0.0});
+    add_child(_cube2);
+    
+    ZColorMaterialRef cube2_material = ZColorMaterialRef(new ZColorMaterial);
+    cube2_material->set_color(ZColor::green);
+    _cube2->get_geometry()->add_material(cube2_material);
+    
+    ZLightRef light = ZLight::create();
+    light->set_color(ZColor::white);
+    light->set_position({0.0, 0.0, 0.0});
+    add_child(light);
+}
+
+void PerspectiveCubeScene::handle_input_event(const ZEvent &event)
+{
+    if (event.type == ZMOUSE_MOVED_EVENT) {
+        float tx = 0.0;
+        float ty = 0.0;
+        float midx = (float)_viewport.size.width / 2.0;
+        float midy = (float)_viewport.size.height / 2.0;
+        
+        ZMouseEvent mouse_event = event.mouse_event;
+        tx = mouse_event.location.x - midx;
+        ty = mouse_event.location.y - midy;
+        
+        ZVector look = {tx / midx, -ty / midy, 0.0};
+        Z3DCameraRef camera = std::dynamic_pointer_cast<Z3DCamera>(get_camera());
+        camera->set_look(look);
+    } else if (event.type == ZKEY_DOWN_EVENT) {
+        if (event.key_event.key == ZKEY_SPACE) {
+            _cube1_material->set_color(ZColor::random_color());
+        } else if (event.key_event.key == ZKEY_BACKSPACE) {
+            _cube2->remove_from_parent();
+        }
+    }
+}

A test/src/persp_cube_scene.h => test/src/persp_cube_scene.h +23 -0

@@ 0,0 1,23 @@
+//
+//  persp_cube_scene.h
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 9/14/14.
+//  Copyright (c) 2014 Charles Magahern. All rights reserved.
+//
+
+#pragma once
+
+#include <zge/zge.h>
+
+class PerspectiveCubeScene : public zge::ZScene {
+public:
+    PerspectiveCubeScene(const zge::ZRect &viewport);
+    void handle_input_event(const zge::ZEvent &event) override;
+    
+private:
+    zge::ZRect _viewport;
+    zge::ZNodeRef _cube1;
+    zge::ZNodeRef _cube2;
+    zge::ZColorMaterialRef _cube1_material;
+};

A test/src/rot_cube_scene.cpp => test/src/rot_cube_scene.cpp +44 -0

@@ 0,0 1,44 @@
+//
+//  rot_cube_scene.cpp
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 9/14/14.
+//  Copyright (c) 2014 Charles Magahern. All rights reserved.
+//
+
+#include "rot_cube_scene.h"
+#include <cmath>
+
+using namespace zge;
+
+RotatingCubeScene::RotatingCubeScene(const ZRect &viewport) :
+    _current_radians(0.0),
+    _viewport(viewport)
+{
+    set_name("Rotating Cube");
+    
+    Z3DCameraRef camera = Z3DCameraRef(new Z3DCamera);
+    camera->set_position({0.0, 0.0, 5.0});
+    camera->set_look({0.0, 0.0, 0.0});
+    camera->set_viewport_rect(_viewport);
+    set_camera(camera);
+    
+    ZNodeRef cube = ZNode::create(ZCube::create());
+    cube->get_geometry()->add_material(ZColorMaterial::create(ZColor::white));
+    cube->set_position({0.0, 0.0, -10.0});
+    add_child(cube);
+    
+    ZLightRef light = std::make_shared<ZLight>(ZLIGHT_TYPE_POINT);
+    light->set_position({-5.0, 0.0, 0.0});
+    light->set_color(ZColor::white);
+    add_child(light);
+    
+    ZLightRef ambient_light = std::make_shared<ZLight>(ZLIGHT_TYPE_AMBIENT);
+    ambient_light->set_color(ZColor(1.0, 1.0, 1.0, 0.2));
+    add_child(ambient_light);
+    
+    ZRotationActionRef rotation = ZRotationAction::create(2.0 * M_PI, ZVector{1.0, 0.75, 0.5});
+    rotation->set_repeat_count(ZAction::repeat_count_infinity);
+    rotation->set_duration(ZTimeInterval(10.0));
+    cube->add_action(rotation);
+}

A test/src/rot_cube_scene.h => test/src/rot_cube_scene.h +20 -0

@@ 0,0 1,20 @@
+//
+//  rot_cube_scene.h
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 9/14/14.
+//  Copyright (c) 2014 Charles Magahern. All rights reserved.
+//
+
+#pragma once
+
+#include <zge/zge.h>
+
+class RotatingCubeScene : public zge::ZScene {
+public:
+    RotatingCubeScene(const zge::ZRect &viewport);
+    
+private:
+    zge::ZRect _viewport;
+    float _current_radians;
+};

A test/src/text_scene.cpp => test/src/text_scene.cpp +32 -0

@@ 0,0 1,32 @@
+//
+//  text_scene.cpp
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 1/10/15.
+//  Copyright (c) 2015 Zanneth. All rights reserved.
+//
+
+#include "text_scene.h"
+
+using namespace zge;
+
+TextScene::TextScene(const ZRect &viewport) :
+    _viewport(viewport)
+{
+    set_name("Text");
+    
+    ZOrthoCameraRef camera = ZOrthoCamera::create();
+    camera->set_clipping_rect({0.0, 0.0, _viewport.size.width, _viewport.size.height});
+    set_camera(camera);
+    
+    ZSpriteNodeRef square = ZSpriteNode::create();
+    square->set_size(ZSize2D{100.0, 100.0});
+    square->set_position({100.0, 250.0});
+    _scene->add_child(square);
+    
+//    ZFontRef font = ZFont::create("/System/Library/Fonts/Monaco.dfont", 64);
+    ZFontRef font = ZFont::create("/usr/share/fonts/truetype/inconsolata/Inconsolata.otf", 64);
+    ZTextNodeRef text_node = ZTextNode::create("cool square!", font);
+    text_node->set_position({100.0, 100.0});
+    _scene->add_child(text_node);
+}

A test/src/text_scene.h => test/src/text_scene.h +19 -0

@@ 0,0 1,19 @@
+//
+//  text_scene.h
+//  ZGEDevelopment
+//
+//  Created by Charles Magahern on 1/10/15.
+//  Copyright (c) 2015 Zanneth. All rights reserved.
+//
+
+#pragma once
+
+#include <zge/zge.h>
+
+class TextScene : public zge::ZScene {
+public:
+    TextScene(const zge::ZRect &viewport);
+    
+private:
+    zge::ZRect _viewport;
+};