Add options

game/game_state.h

@@ -19,8 +19,29 @@ typedef struct DrawData {
     f32       rotation;
 } DrawData;
 
+typedef struct Options {
+    // Video
+    bool fullscreen;
+    bool vsync;
+    // Audio
+    f32 master;
+    f32 music;
+    f32 sound;
+} Options;
+
+static Options getDefaultOptions() {
+    return (Options) {
+        .fullscreen = false,
+        .vsync = false,
+        .master = 5.0f,
+        .music = 5.0f,
+        .sound = 5.0f,
+    };
+}
+
 typedef struct Game {
     GameScreen screen;
+    GameScreen screenPrevFrame;
     Camera2D camera;
     BzTileset tileset;
     BzTileMap map;
@@ -29,6 +50,8 @@ typedef struct Game {
 
     Font font;
 
+    Options options;
+
     struct {
         i64 wood;
         i64 iron;