some basic 3D rendering and the base for chunk generation etc.

1 files changed, 66 insertions, 0 deletions

diff --git a/src/engine/M_game.c b/src/engine/M_game.c
new file mode 100644
index 0000000..3c76d96
--- /dev/null
+++ b/src/engine/M_game.c
@@ -0,0 +1,66 @@
+#include "M_game.h"
+
+int M_initGame(M_Game *game, const char *window_title)
+{
+	game->window_width = 1280;
+	game->window_height = 720;
+
+	SDL_Init(
+			SDL_INIT_VIDEO
+			);
+
+	game->window = SDL_CreateWindow(
+			window_title,
+			game->window_width,
+			game->window_height,
+			SDL_WINDOW_OPENGL
+			);
+	M_setupProjection(90.0f, ((float)game->window_width)/((float)game->window_height), &game->render_info);
+	
+	game->block_atlas = M_createBlockAtlas();
+
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+	game->gpu = SDL_GL_CreateContext(game->window);
+
+	SDL_GL_MakeCurrent(game->window, game->gpu);
+
+	game->running = 1;
+
+	int version = gladLoadGL((GLADloadfunc)SDL_GL_GetProcAddress);
+	if (version == 0) {
+		return 1;
+	}
+
+	game->event_handler = SDL_CreateThread(M_handleEvents, "eventHandler", (void*)game);
+
+	glClearColor(0.0f, 0.25f, 0.5f, 1.0f);
+
+	glEnable(GL_DEPTH_TEST);
+
+	return 0;
+}
+
+int M_killGame(M_Game *game)
+{
+	SDL_WaitThread(game->event_handler, NULL);
+	SDL_Quit();
+	return 0;
+}
+
+int SDLCALL M_handleEvents(void* arg)
+{
+	M_Game *game = arg;
+	SDL_Event event;
+	while (game->running) {
+		SDL_PollEvent(&event);
+		switch (event.type) {
+			case SDL_EVENT_QUIT:
+				game->running = 0;
+				break;
+		}
+		SDL_Delay(1);
+	}
+	return 0;
+}