Handling User Input Scratch provides simple blocks for key presses, which you will map to movement commands. You draw vertical lines across the screen, and for each line, you calculate the distance to the nearest wall by stepping through the 3D grid.
Techniques for Adding Depth to 3D Scratch Games
The most common technique for 3D games in Scratch is the ray-casting method, similar to early classics like Wolfenstein 3D. You should create custom blocks (functions) to handle repetitive tasks, such as drawing the grid, rendering walls, or calculating the FOV (Field of View).
This requires trigonometry—specifically sine and cosine functions—to calculate the new X and Y positions based on the player's rotation angle. Understanding the 3D Illusion in a 2D World The foundation of any 3D game in Scratch is the illusion of depth.
Implementing Depth with Ray-Casting and 3D Techniques
In a 3D environment, you must handle strafing (moving left and right) and forward/backward motion relative to the direction the player is facing, not just the left-right axis of the stage. To prevent the game from feeling sluggish, ensure you adjust the movement speed relative to the frame rate.
More About How to make a 3d game in scratch
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