basic game logic with simple translation animation

game.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "core.h"
+#include "ui.h"
+
+typedef enum MoveDir {
+    MOVE_DIR_UP,
+    MOVE_DIR_DOWN,
+    MOVE_DIR_LEFT,
+    MOVE_DIR_RIGHT,
+} MoveDir;
+
+typedef struct Tile {
+    u16 value;
+    u16 new_value;
+
+    f64 anim_x_offset_relative;
+    f64 anim_y_offset_relative;
+    u8 tiles_to_move;
+} Tile;
+
+typedef struct Game {
+    Tile board[4][4];
+    MoveDir last_move_dir;
+    bool animating;
+} Game;
+
+void draw_board(void);
+void game_loop(void);