mirror of
https://github.com/photonstorm/phaser
synced 2024-12-23 03:23:42 +00:00
114 lines
4.1 KiB
TypeScript
114 lines
4.1 KiB
TypeScript
/// <reference path="../../Phaser/Game.ts" />
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/// <reference path="../../Phaser/core/Plugin.ts" />
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/**
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* Phaser - Plugins - Camera FX - Shake
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*
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* A simple camera shake effect.
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*/
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module Phaser.Plugins.CameraFX {
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export class Shake extends Phaser.Plugin {
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constructor(game: Phaser.Game, parent) {
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super(game, parent);
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this.camera = parent;
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}
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public camera: Phaser.Camera;
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private _fxShakeIntensity: number = 0;
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private _fxShakeDuration: number = 0;
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private _fxShakeComplete = null;
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private _fxShakeOffset: Point = new Point(0, 0);
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private _fxShakeDirection: number = 0;
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private _fxShakePrevX: number = 0;
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private _fxShakePrevY: number = 0;
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public static SHAKE_BOTH_AXES: number = 0;
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public static SHAKE_HORIZONTAL_ONLY: number = 1;
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public static SHAKE_VERTICAL_ONLY: number = 2;
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/**
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* A simple camera shake effect.
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*
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* @param Intensity Percentage of screen size representing the maximum distance that the screen can move while shaking.
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* @param Duration The length in seconds that the shaking effect should last.
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* @param OnComplete A function you want to run when the shake effect finishes.
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* @param Force Force the effect to reset (default = true, unlike flash() and fade()!).
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* @param Direction Whether to shake on both axes, just up and down, or just side to side (use class constants SHAKE_BOTH_AXES, SHAKE_VERTICAL_ONLY, or SHAKE_HORIZONTAL_ONLY).
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*/
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public start(intensity: number = 0.05, duration: number = 0.5, onComplete = null, force: bool = true, direction: number = Shake.SHAKE_BOTH_AXES) {
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if (!force && ((this._fxShakeOffset.x != 0) || (this._fxShakeOffset.y != 0)))
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{
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return;
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}
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// If a shake is not already running we need to store the offsets here
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if (this._fxShakeOffset.x == 0 && this._fxShakeOffset.y == 0)
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{
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this._fxShakePrevX = this.camera.x;
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this._fxShakePrevY = this.camera.y;
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}
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this._fxShakeIntensity = intensity;
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this._fxShakeDuration = duration;
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this._fxShakeComplete = onComplete;
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this._fxShakeDirection = direction;
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this._fxShakeOffset.setTo(0, 0);
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}
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public postUpdate() {
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// Update the "shake" special effect
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if (this._fxShakeDuration > 0)
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{
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this._fxShakeDuration -= this.game.time.elapsed;
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if (this.game.math.roundTo(this._fxShakeDuration, -2) <= 0)
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{
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this._fxShakeDuration = 0;
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this._fxShakeOffset.setTo(0, 0);
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this.camera.x = this._fxShakePrevX;
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this.camera.y = this._fxShakePrevY;
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if (this._fxShakeComplete != null)
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{
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this._fxShakeComplete();
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}
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}
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else
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{
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if ((this._fxShakeDirection == Shake.SHAKE_BOTH_AXES) || (this._fxShakeDirection == Shake.SHAKE_HORIZONTAL_ONLY))
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{
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this._fxShakeOffset.x = (this.game.rnd.integer * this._fxShakeIntensity * this.camera.worldView.width * 2 - this._fxShakeIntensity * this.camera.worldView.width);
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}
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if ((this._fxShakeDirection == Shake.SHAKE_BOTH_AXES) || (this._fxShakeDirection == Shake.SHAKE_VERTICAL_ONLY))
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{
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this._fxShakeOffset.y = (this.game.rnd.integer * this._fxShakeIntensity * this.camera.worldView.height * 2 - this._fxShakeIntensity * this.camera.worldView.height);
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}
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}
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}
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}
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public preRender() {
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if ((this._fxShakeOffset.x != 0) || (this._fxShakeOffset.y != 0))
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{
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this.camera.x = this._fxShakePrevX + this._fxShakeOffset.x;
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this.camera.y = this._fxShakePrevY + this._fxShakeOffset.y;
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}
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}
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}
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}
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