physics-arcade

Arcade Physics

Setting up and using Arcade Physics in Phaser 4 -- enabling physics in GameConfig, creating physics-enabled sprites/images/groups, velocity, acceleration, gravity, collisions (collide/overlap), world bounds, body properties, and collision categories.

Key source paths: src/physics/arcade/ArcadePhysics.js, src/physics/arcade/World.js, src/physics/arcade/Body.js, src/physics/arcade/StaticBody.js, src/physics/arcade/Factory.js, src/physics/arcade/components/, src/physics/arcade/events/ Related skills: ../game-setup-and-config/SKILL.md, ../sprites-and-images/SKILL.md, ../tilemaps/SKILL.md, ../groups-and-containers/SKILL.md

Quick Start

class GameScene extends Phaser.Scene {
    create() {
        // Physics sprite (dynamic body, affected by gravity)
        this.player = this.physics.add.sprite(100, 300, 'player');
        this.player.setCollideWorldBounds(true);
        this.player.setBounce(0.2);

        // Static group (immovable platforms)
        this.platforms = this.physics.add.staticGroup();
        this.platforms.create(400, 568, 'ground').setScale(2).refreshBody();

        // Register a persistent collider (checked every frame automatically)
        this.physics.add.collider(this.player, this.platforms);

        this.cursors = this.input.keyboard.createCursorKeys();
    }

    update() {
        if (this.cursors.left.isDown) {
            this.player.setVelocityX(-160);
        } else if (this.cursors.right.isDown) {
            this.player.setVelocityX(160);
        } else {
            this.player.setVelocityX(0);
        }
    }
}

// Enable Arcade Physics in game config
const config = {
    type: Phaser.AUTO,
    width: 800,
    height: 600,
    physics: {
        default: 'arcade',
        arcade: {
            gravity: { y: 300 },
            debug: false
        }
    },
    scene: GameScene
};

const game = new Phaser.Game(config);

Core Concepts

World (this.physics.world)

The Phaser.Physics.Arcade.World manages all bodies in the simulation. Accessed via this.physics.world in a Scene.