FPS treasure hunt

The game starts with a shooter with 10 ammo in total. 5 as current and 5 as loaded. Key "f" will reload the gun. Use wasd to walk, space to jump, and left click to shoot. Your goal is to find at least three coins which will open a secret door. Inside the secret door, there is a "target." Once the target is touched, game ends and you win!. To discover the coins, use your ammo to shoot the barrel, coins may be inside! To gain ammo, go to the door appear at the right. When the text "Press Button" appears,  press the key "e" and the door will open. Each "food" inside is worth 1 ammo. Be careful, when you have no ammo left, the game ends and you lose.  Once you lose, you have to quit. Press"r" can restart you position, and "q" to quit. By collecting more coins, you can create a high score.