角速度
原文地址:http://www.phaser.io/examples/v2/arcade-physics/angular-velocity。
效果
源代码
window.onload = function () { var game = new Phaser.Game(600, 400, Phaser.AUTO, 'phaser_container', { preload: preload, create: create, update: update, render: render }); function preload() { game.load.image('arrow', 'images/phaser/arrow.png'); } var sprite; function create() { game.physics.startSystem(Phaser.Physics.ARCADE); game.stage.backgroundColor = '#0072bc'; sprite = game.add.sprite(300, 200, 'arrow'); sprite.anchor.setTo(0.5, 0.5); game.physics.enable(sprite, Phaser.Physics.ARCADE); } function update() { sprite.body.velocity.x = 0; sprite.body.velocity.y = 0; sprite.body.angularVelocity = 0; // 按键盘“向左”逆时针旋转 if (game.input.keyboard.isDown(Phaser.Keyboard.LEFT)) { sprite.body.angularVelocity = -200; } // 按键盘“向右”顺时针旋转 else if (game.input.keyboard.isDown(Phaser.Keyboard.RIGHT)) { sprite.body.angularVelocity = 200; } // 按键盘“向上”前进 if (game.input.keyboard.isDown(Phaser.Keyboard.UP)) { game.physics.arcade.velocityFromAngle(sprite.angle, 300, sprite.body.velocity); } } function render() { game.debug.spriteInfo(sprite, 32, 32); game.debug.text('角速度: ' + sprite.body.angularVelocity, 32, 200); game.debug.text('角加速度: ' + sprite.body.angularAcceleration, 32, 232); game.debug.text('angularDrag: ' + sprite.body.angularDrag, 32, 264); game.debug.text('deltaZ: ' + sprite.body.deltaZ(), 32, 296); } }
发布时间:2016/8/27 下午9:04:20 阅读次数:4490