phaser/wip/CameraFX/Shake.js

var __extends = this.__extends || function (d, b) {
    function __() { this.constructor = d; }
    __.prototype = b.prototype;
    d.prototype = new __();
};
var Phaser;
(function (Phaser) {
    (function (Plugins) {
        /// <reference path="../../Phaser/Game.ts" />
        /// <reference path="../../Phaser/core/Plugin.ts" />
        /**
        * Phaser - Plugins - Camera FX - Shake
        *
        * A simple camera shake effect.
        */
        (function (CameraFX) {
            var Shake = (function (_super) {
                __extends(Shake, _super);
                function Shake(game, parent) {
                                _super.call(this, game, parent);
                    this._fxShakeIntensity = 0;
                    this._fxShakeDuration = 0;
                    this._fxShakeComplete = null;
                    this._fxShakeOffset = new Phaser.Point(0, 0);
                    this._fxShakeDirection = 0;
                    this._fxShakePrevX = 0;
                    this._fxShakePrevY = 0;
                    this.camera = parent;
                }
                Shake.SHAKE_BOTH_AXES = 0;
                Shake.SHAKE_HORIZONTAL_ONLY = 1;
                Shake.SHAKE_VERTICAL_ONLY = 2;
                Shake.prototype.start = /**
                * A simple camera shake effect.
                *
                * @param	Intensity	Percentage of screen size representing the maximum distance that the screen can move while shaking.
                * @param	Duration	The length in seconds that the shaking effect should last.
                * @param	OnComplete	A function you want to run when the shake effect finishes.
                * @param	Force		Force the effect to reset (default = true, unlike flash() and fade()!).
                * @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).
                */
                function (intensity, duration, onComplete, force, direction) {
                    if (typeof intensity === "undefined") { intensity = 0.05; }
                    if (typeof duration === "undefined") { duration = 0.5; }
                    if (typeof onComplete === "undefined") { onComplete = null; }
                    if (typeof force === "undefined") { force = true; }
                    if (typeof direction === "undefined") { direction = Shake.SHAKE_BOTH_AXES; }
                    if(!force && ((this._fxShakeOffset.x != 0) || (this._fxShakeOffset.y != 0))) {
                        return;
                    }
                    //  If a shake is not already running we need to store the offsets here
                    if(this._fxShakeOffset.x == 0 && this._fxShakeOffset.y == 0) {
                        this._fxShakePrevX = this.camera.x;
                        this._fxShakePrevY = this.camera.y;
                    }
                    this._fxShakeIntensity = intensity;
                    this._fxShakeDuration = duration;
                    this._fxShakeComplete = onComplete;
                    this._fxShakeDirection = direction;
                    this._fxShakeOffset.setTo(0, 0);
                };
                Shake.prototype.postUpdate = function () {
                    //  Update the "shake" special effect
                    if(this._fxShakeDuration > 0) {
                        this._fxShakeDuration -= this.game.time.elapsed;
                        if(this.game.math.roundTo(this._fxShakeDuration, -2) <= 0) {
                            this._fxShakeDuration = 0;
                            this._fxShakeOffset.setTo(0, 0);
                            this.camera.x = this._fxShakePrevX;
                            this.camera.y = this._fxShakePrevY;
                            if(this._fxShakeComplete != null) {
                                this._fxShakeComplete();
                            }
                        } else {
                            if((this._fxShakeDirection == Shake.SHAKE_BOTH_AXES) || (this._fxShakeDirection == Shake.SHAKE_HORIZONTAL_ONLY)) {
                                this._fxShakeOffset.x = (this.game.rnd.integer * this._fxShakeIntensity * this.camera.worldView.width * 2 - this._fxShakeIntensity * this.camera.worldView.width);
                            }
                            if((this._fxShakeDirection == Shake.SHAKE_BOTH_AXES) || (this._fxShakeDirection == Shake.SHAKE_VERTICAL_ONLY)) {
                                this._fxShakeOffset.y = (this.game.rnd.integer * this._fxShakeIntensity * this.camera.worldView.height * 2 - this._fxShakeIntensity * this.camera.worldView.height);
                            }
                        }
                    }
                };
                Shake.prototype.preRender = function () {
                    if((this._fxShakeOffset.x != 0) || (this._fxShakeOffset.y != 0)) {
                        this.camera.x = this._fxShakePrevX + this._fxShakeOffset.x;
                        this.camera.y = this._fxShakePrevY + this._fxShakeOffset.y;
                    }
                };
                return Shake;
            })(Phaser.Plugin);
            CameraFX.Shake = Shake;            
        })(Plugins.CameraFX || (Plugins.CameraFX = {}));
        var CameraFX = Plugins.CameraFX;
    })(Phaser.Plugins || (Phaser.Plugins = {}));
    var Plugins = Phaser.Plugins;
})(Phaser || (Phaser = {}));