3D Web Game Development with JavaScript and Three.js

Create a basic three.js scene by loading the library from a CDN, configuring the scene, perspective camera, renderer, and background color, and setting up an animation loop to render.

Create a character in three.js by building a sphere geometry, a basic material, and a mesh, then add it to the scene and adjust the camera to reveal it.

Learn to add a floor to the scene by creating a plane geometry, applying a forest green material, and positioning and rotating the floor for an immersive, double-sided ground.

Move the character in a three.js 3d world with keyboard arrows, using keydown and keyup to update x, y, and z positions, and note key codes 37–40.

Learn to handle continuous key presses with a per-frame update driven by a global keyboard event and a pressed flag, enabling smooth, frame-based character movement.

Attach the perspective camera to the character mesh so the camera follows the player and moves as one, keeping the character in view in a 3D world.

Add a red cube obstacle with box geometry as a mesh in a three.js scene, and set up collision detection to detect player contact.

Detect collisions in a 3D web game using a per-frame update, vertex-based checks, and ray-casted recasts with three.js, balancing obstacles and performance trade-offs.

Show the player's health as a 2D overlay in a 3D three.js scene by overlaying a fixed top-left health label that updates on each collision.

Rotate the player on the y axis to look. Move forward or backward using translateZ for a 360-degree field of view in a 3D web game with JavaScript and Three.js.

Handle window resize by listening for the resize event, updating the camera aspect and projection matrix, and resizing the renderer to keep the 3-D world full screen.

Apply character customization by loading a zebra skin texture onto the character mesh using a texture loader and the material's map property, then run a local server to view updates.