As an AI text-based model, I can provide you with the basic structure and logic for a simple FPS (First Person Shooter) game implemented using HTML and JavaScript. However, please note that implementing a full-fledged game with pictograms and smartphone-specific operations would require much more complex programming and design. Here's a simplified example to get you started:
This example sets up a game canvas, listens to arrow key presses for player movement, and updates the player's position accordingly. It clears the canvas and redraws the updated player position in a game loop that runs continuously using the `requestAnimationFrame` function.
Remember, this is just a basic starting point for an FPS game, and you can expand and enhance it with various game mechanics, graphics, enemy AI, and more.