1 files changed, 272 insertions, 0 deletions
diff --git a/game.h b/game.h
new file mode 100644
index 0000000..b20c271
--- /dev/null
+++ b/game.h
@@ -0,0 +1,272 @@
+#ifndef __GAME_H__
+#define __GAME_H__
+
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_image.h>
+#include <SDL2/SDL_ttf.h>
+#include <SDL2/SDL_mixer.h>
+
+#include <stdbool.h>
+
+#define MAX_AUDIOS 10
+#define MAX_TEXTURES 100
+#define MAX_WIDGETS_PER_LAYER 10
+#define MAX_ENTITIES 128
+#define MAX_TILES 64
+
+#define MAX_BULLETS 32
+#define BULLET_WIDTH 8
+
+#define MENU_LAYER 0
+#define GAME_LAYER 1
+
+#define MOUSE_BUTTON 0
+#define MOUSE_MOTION 1
+
+#define POSITION_CENTERED -1
+
+#define WINDOW_WIDTH 800
+#define WINDOW_HEIGHT 600
+
+enum GameStates
+  {
+    QUIT = 0,
+    RUNNING = 1,
+    MENU = 2
+  };
+
+struct Entity
+{
+  float x, y;
+  float dx, dy; // Velocity
+  float d2x, d2y; // Acceleration
+  
+  int w, h;
+
+  bool collidable;
+  bool mirror;
+  bool fixed;
+  bool use_src_rect;
+  int i, j;
+  SDL_Rect src_rect;
+
+  SDL_Texture *texture;
+  char *name;
+  void (*on_collision)(struct Entity *this, struct Entity *other);
+};
+
+struct Camera
+{
+  SDL_Rect rect;
+};
+
+struct Color
+{
+  unsigned char r, g, b;
+};
+
+struct Widget
+{
+  bool use_src_rect;
+  SDL_Rect rect, src_rect;
+  SDL_Texture *texture;
+  
+  struct Color color;
+  struct Color on_hover_color;
+  struct Color default_color;
+  
+  bool is_hover;
+  bool is_focus;
+  bool is_blended;
+  int initial_x;
+  int initial_y;
+
+  void (*callback)(struct Widget *);
+};
+
+enum GunType
+  {
+    REVOLVER = 0,
+    RIFLE = 1,
+    SHOTGUN = 2
+  };
+
+struct Gun
+{
+  unsigned char type;
+  float angle;
+  unsigned char projectiles_per_shot;
+  bool ready;
+  float cooldown;
+  float cooldown_elapsed;
+
+  unsigned char damage;
+  unsigned char bullets;
+  unsigned char max_bullets;
+  
+  Mix_Chunk *sound_effect;
+};
+
+struct PlayerKeys
+{
+  unsigned char jump;
+  unsigned char left, right;
+  unsigned char fire, reload;
+  unsigned char weaponds[3];
+};
+
+struct Player
+{
+  struct Entity entity;
+
+  unsigned char current_gun;
+  struct Gun guns[3];
+
+  bool facing_left;
+  bool on_ground;
+  bool reloading;
+
+  char life;
+  char score;
+  float reload_time;
+
+  char name[16];
+  struct PlayerKeys keys;
+
+  struct Widget *hearts[3];
+  struct Widget *gun;
+  int counter;
+};
+
+struct Bullet
+{ 
+  struct Entity entity;
+  struct Player *owner;
+
+  struct Bullet *next;
+
+  unsigned char index;
+  unsigned char damage;
+};
+
+struct Layer
+{
+  //int num_entities;
+  //struct Entity *entities[MAX_ENTITIES_PER_LAYER];
+
+  int num_widgets;
+  struct Widget widgets[MAX_WIDGETS_PER_LAYER];
+};
+
+struct Menu
+{
+  struct Widget *play_button;
+  struct Widget *quit_button;
+};
+
+struct TextureContainer
+{
+  char name[16];
+  SDL_Texture *texture;
+};
+
+struct Resources
+{
+  int num_textures;
+  SDL_Texture *textures[MAX_TEXTURES];
+
+  int num_stored_textures;
+  struct TextureContainer contained_textures[MAX_TEXTURES];
+
+  int num_audios;
+  Mix_Chunk *audios[MAX_AUDIOS];
+    
+  TTF_Font *font;
+};
+
+struct MainGame
+{
+  SDL_Window *window;
+  SDL_Renderer *renderer;
+  int width, height;
+
+  unsigned char state;
+  int gravity;
+
+  int num_players;
+  struct Player players[2];
+  
+  // 0 -> game, 1 -> menu
+  struct Layer layers[2];
+  unsigned char current_layer;
+
+  struct Resources resources;
+
+  struct Menu menu;
+  const Uint8 *keys;
+
+  unsigned int bullets_left;
+  SDL_Texture *bullet_texture;
+  struct Bullet *bullets[MAX_BULLETS];
+
+  int num_entities;
+  struct Entity *entities[MAX_ENTITIES];
+
+  int num_tiles;
+  struct Entity tiles[MAX_TILES];
+  
+  float frame_time;
+  SDL_Texture *guns[3];
+  Mix_Chunk *revolver_sound, *rifle_sound;
+  
+  struct Widget *score;
+
+  struct Camera camera;
+};
+
+extern struct MainGame *game;
+
+/* Util */
+SDL_Texture *load_texture(const char *name);
+Mix_Chunk *load_sound(const char *name);
+void die(const char *error, ...) __attribute__ ((noreturn));
+
+/* GUI */
+struct Widget *add_button(unsigned char layer,
+			  const char *label,
+			  int x, int y,
+			  void (*callback)(struct Widget *));
+
+struct Widget *add_image(unsigned char layer, SDL_Texture *image,
+			 int x, int y, int w, int h);
+
+void process_widget_events(unsigned char type, int x, int y);
+void set_color(struct Widget *w, struct Color color);
+void set_text(struct Widget *w, const char *text);
+struct Widget *add_label(unsigned char layer,
+			 const char *text,
+			 struct Color color,
+			 int x, int y);
+
+/* Renderer */
+void render_begin(void);
+void render_entities(void);
+void render_flush(void);
+
+/* Bullets */
+void init_bullets(void);
+void shoot_bullet(struct Player *owner);
+void update_bullets(void);
+
+/* Players */
+void init_player(struct Player *p, struct PlayerKeys *keys,
+		 float x, float y, const char *name);
+void update_player(struct Player *p);
+void update_score(void);
+
+/* Collisions */
+void check_collisions(void);
+
+void load_config(const char *config);
+
+#endif