1 files changed, 200 insertions, 0 deletions
diff --git a/game.c b/game.c
new file mode 100644
index 0000000..73d062b
--- /dev/null
+++ b/game.c
@@ -0,0 +1,200 @@
+#include "asset.h"
+#include "enemy.h"
+#include "game.h"
+#include "platform.h"
+#include "sprite.h"
+#include "systems.h"
+
+static void menu_new(Menu* menu) {
+	Game* game;
+
+	game = menu->ptr;
+	game_change_state(game, game_state_game);
+}
+
+static void menu_restart(Menu* menu) {
+	Game* game;
+
+	game = menu->ptr;
+	game_change_state(game, game_state_game);
+}
+
+static void menu_main_menu(Menu* menu) {
+	Game* game;
+
+	game = menu->ptr;
+	game_change_state(game, game_state_menu);
+}
+
+static void menu_quit(Menu* menu) {
+	(void)menu;
+	platform_quit();
+}
+
+static void menu_credits(Menu* menu) {
+	Game* game;
+
+	game = menu->ptr;
+	game_change_state(game, game_state_credits);
+}
+
+static void menu_init(Game* game) {
+	const BM_Font* font;
+
+	font = get_default_font();
+
+	init_menu(&game->menu, game);
+	menu_add(&game->menu, "New", menu_new, font);
+	menu_add(&game->menu, "Continue", 0, font);
+	menu_add(&game->menu, "Credits", menu_credits, font);
+	menu_add(&game->menu, "Quit", menu_quit, font);
+}
+
+static void menu_update(Game* game) {
+	const Sprite* msg;
+	const Bitmap* bmp;
+	int h, y;
+
+	update_menu(&game->menu);
+
+	h = game->menu.h;
+	y = game->menu.y;
+
+	msg = get_sprite(sprite_author);
+	bmp = get_bitmap(msg->bitmap);
+	render_bitmap(
+		bmp,
+		renderer_w / 2 - msg->rect.w / 2,
+		renderer_h - 26,
+		&msg->rect
+	);
+
+	msg = get_sprite(sprite_free);
+	bmp = get_bitmap(msg->bitmap);
+	render_bitmap(
+		bmp,
+		renderer_w / 2 - msg->rect.w / 2,
+		renderer_h - 15,
+		&msg->rect
+	);
+
+	render_menu(&game->menu, get_default_font());
+}
+
+static void menu_deinit(Game* game) {
+
+}
+
+static void gameplay_init(Game* game) {
+	init_world(&game->world);
+
+	init_player(&game->world.player, &game->world);
+
+	new_skull(&game->world, 0, 0);
+}
+
+static void gameplay_update(Game* game) {
+	update_player(&game->world.player, &game->world);
+	enemy_system(&game->world);
+	bullet_system(&game->world);
+	collision_system(&game->world);
+	animation_system(&game->world);
+	sprite_system(&game->world);
+}
+
+static void gameplay_deinit(Game* game) {
+
+}
+
+static void credits_init(Game* game) {
+
+}
+
+static void credits_update(Game* game) {
+
+}
+
+static void credits_deinit(Game* game) {
+
+}
+
+static void dead_init(Game* game) {
+	const BM_Font* font = get_default_font();
+	init_menu(&game->menu, game);
+	menu_add(&game->menu, "Restart", menu_restart, font);
+	menu_add(&game->menu, "Main Menu", menu_main_menu, font);
+}
+
+static void dead_update(Game* game) {
+	const BM_Font* font;
+
+	font = get_default_font();
+
+	update_menu(&game->menu);
+
+	sprite_system(&game->world);
+
+	rfont_text(
+		font,
+		renderer_w / 2 - 40,
+		game->menu.y - 15,
+		"You died"
+	);
+	render_menu(&game->menu, get_default_font());
+}
+
+static void dead_deinit(Game* game) {
+
+}
+
+static const Game_State_Fns game_state_fns[] = {
+	/* game_state_menu */
+	{
+		menu_init,
+		menu_update,
+		menu_deinit
+	},
+	/* game_state_game */
+	{
+		gameplay_init,
+		gameplay_update,
+		gameplay_deinit
+	},
+	/* game_state_credits */
+	{
+		credits_init,
+		credits_update,
+		credits_deinit
+	},
+	/* game_state_dead */
+	{
+		dead_init,
+		dead_update,
+		dead_deinit
+	}
+};
+
+static const Game_State_Fns* get_state_fns(Game_State state) {
+	return &game_state_fns[state];
+}
+
+void game_init(Game* game, Game_State state) {
+	game->state = state;
+	game->fns = get_state_fns(state);
+	game->fns->state_init(game);
+}
+
+void game_update(Game* game) {
+	game->fns->state_update(game);
+}
+
+void game_deinit(Game* game) {
+	game->fns->state_deinit(game);
+}
+
+void game_change_state(Game* game, Game_State state) {
+	game->fns->state_deinit(game);
+	game->state = state;
+	game->fns = get_state_fns(state);
+	game->fns->state_init(game);
+}