In the provided code snippet, an 8-bit arcade-style game combining elements from Duke Nukem and Donkey Kong is implemented using HTML, CSS, and JavaScript as a single HTML file. The game includes a canvas element where the gameplay is rendered.
The script tags enclose the JavaScript code responsible for game logic. The game features a player controlled by arrow keys on a smartphone. The player can navigate through the game environment represented by pictograms using the arrow keys. The objective is to avoid enemies and collect score points.
The game utilizes keyboard event listeners to capture and process player input. It includes a game update function to handle player movement and enemy spawning, a render function for rendering game objects, and a game loop to continuously update and render the game.
Pictogram images for the background, player, and enemy are assumed to be available as "emozi_all/pictogram.png", "emozi_all/player.png", and "emozi_all/enemy.png" respectively. These images are loaded as resources using the Image object.
The game also includes collision detection between the player and enemies, removing enemies upon collision, and updating the score accordingly.
The overall game flow starts by calling the gameLoop function, which in turn calls the update and render functions in a loop using requestAnimationFrame for smooth animation and gameplay.