//----------------------------------------------- // Collision Performance Test // - [RECTANGLE] Rectangle.intersects // - [MY RECT] calc orijinal // - [HITTEST] Sprite.hitTestObject // // 衝突判定のパフォーマンステスト // Rectangleにinstersectsという便利メソッドがあるけど // めっちゃ遅いことが分かった。自力計算するほうが良さそう。 // // 結果としてはこんな感じ // 自力計算 >>> Rectangle.intersects > Sprite.hitTestObject //----------------------------------------------- package { import com.bit101.components.PushButton; import flash.display.*; import flash.events.*; import flash.geom.*; import net.hires.debug.Stats; [SWF(frameRate=60, width=465, height=465)] /** * Collision Performance Test * @author yasu */ public class Main extends Sprite { private static const COLOR_TRANS:ColorTransform = new ColorTransform(0.6, 0.6, 0.6, 1); private static const MAX:int = 400; private static const RECT_WH:int = 10; private static const STAGE_H:int = 465; private static const STAGE_W:int = 465; public function Main() { bmd = new BitmapData(STAGE_W, STAGE_H, false, 0xFF000000); addChild(new Bitmap(bmd)); btnA = new PushButton(this, 80, STAGE_H - 50, "RECTANGLE", _onClick); btnB = new PushButton(this, 200, STAGE_H - 50, "MY RECT", _onClick); btnC = new PushButton(this, 320, STAGE_H - 50, "HITTEST", _onClick); addChild(new Stats); } private var MAX_SPEED:int = 20; private const RECT_BMD:BitmapData = new BitmapData(RECT_WH, RECT_WH, false, 0x666666); private const RECT_HIT_BMD:BitmapData = new BitmapData(RECT_WH, RECT_WH, false, 0x990000); private var bmd:BitmapData; private var btnA:PushButton; private var btnB:PushButton; private var btnC:*; private var myrects:Vector.<ObjMyRect>; private var objs:Array = []; private var rectangles:Vector.<ObjRectangle>; private var sprites:Vector.<ObjSprite>; private function _initMyRects():void { myrects = new Vector.<ObjMyRect>(MAX, true); for (var i:int = 0; i < MAX; i++) { myrects[ i ] = new ObjMyRect(); var size:int = Math.random() * RECT_WH >> 0 myrects[ i ].rect = new MyRect(Math.random() * STAGE_W >> 0, Math.random() * STAGE_H >> 0, size, size) myrects[ i ].vx = (Math.random() - 0.5) * MAX_SPEED >> 0; myrects[ i ].vy = (Math.random() - 0.5) * MAX_SPEED >> 0; } } private function _initRectangle():void { rectangles = new Vector.<ObjRectangle>(MAX, true); for (var i:int = 0; i < MAX; i++) { rectangles[ i ] = new ObjRectangle(); var size:int = Math.random() * RECT_WH >> 0 rectangles[ i ].rect = new Rectangle(Math.random() * STAGE_W >> 0, Math.random() * STAGE_H >> 0, size, size) rectangles[ i ].vx = (Math.random() - 0.5) * MAX_SPEED >> 0; rectangles[ i ].vy = (Math.random() - 0.5) * MAX_SPEED >> 0; } } private function _initSprites():void { sprites = new Vector.<ObjSprite>(MAX, true); for (var i:int = 0; i < MAX; i++) { sprites[ i ] = new ObjSprite(); addChildAt(sprites[ i ], 1); var size:int = Math.random() * RECT_WH >> 0 sprites[ i ].width = sprites[ i ].height = size; sprites[ i ].x = Math.random() * STAGE_W >> 0; sprites[ i ].y = Math.random() * STAGE_H >> 0; sprites[ i ].vx = (Math.random() - 0.5) * MAX_SPEED >> 0; sprites[ i ].vy = (Math.random() - 0.5) * MAX_SPEED >> 0; } } private function _onClick(e:Event):void { removeEventListener(Event.ENTER_FRAME, onEnterFrameA); removeEventListener(Event.ENTER_FRAME, onEnterFrameB); removeEventListener(Event.ENTER_FRAME, onEnterFrameC); rectangles = null; myrects = null; if (sprites) { for (var i:int = 0; i < sprites.length; i++) { removeChild(sprites[ i ]); } } sprites = null; bmd.fillRect(bmd.rect, 0x0); switch (e.currentTarget) { case btnA: _initRectangle(); addEventListener(Event.ENTER_FRAME, onEnterFrameA); break; case btnB: _initMyRects(); addEventListener(Event.ENTER_FRAME, onEnterFrameB); break; case btnC: _initSprites(); addEventListener(Event.ENTER_FRAME, onEnterFrameC); break; } } private function onEnterFrameA(event:Event):void { var i:int, j:int; var elementA:ObjRectangle; var elementB:ObjRectangle; for (i = 0; i < rectangles.length; i++) { elementA = rectangles[ i ] as ObjRectangle; elementA.rect.x += elementA.vx; elementA.rect.y += elementA.vy; if (elementA.rect.x < 0 || elementA.rect.x > STAGE_W) elementA.vx *= -1; if (elementA.rect.y < 0 || elementA.rect.y > STAGE_H) elementA.vy *= -1; elementA.isHit = false; } for (i = 0; i < rectangles.length; i++) { elementA = rectangles[ i ] as ObjRectangle; for (j = 0; j < rectangles.length; j++) { if (j <= i) continue; elementB = rectangles[ j ] as ObjRectangle; if (elementA.rect.intersects(elementB.rect)) { elementA.isHit = elementB.isHit = true; } } } bmd.lock(); bmd.colorTransform(bmd.rect, COLOR_TRANS); for (i = 0; i < rectangles.length; i++) { elementA = rectangles[ i ] as ObjRectangle; bmd.fillRect(elementA.rect, elementA.isHit ? 0x990000 : 0x666666); } bmd.unlock(); } private function onEnterFrameB(event:Event):void { var i:int, j:int; var elementA:ObjMyRect; var elementB:ObjMyRect; for (i = 0; i < myrects.length; i++) { elementA = myrects[ i ] as ObjMyRect; elementA.rect.x += elementA.vx; elementA.rect.y += elementA.vy; if (elementA.rect.x < 0 || elementA.rect.x > STAGE_W) elementA.vx *= -1; if (elementA.rect.y < 0 || elementA.rect.y > STAGE_H) elementA.vy *= -1; elementA.isHit = false; } for (i = 0; i < myrects.length; i++) { elementA = myrects[ i ] as ObjMyRect; for (j = 0; j < myrects.length; j++) { if (j <= i) continue; elementB = myrects[ j ] as ObjMyRect; if (elementA.rect.x + elementA.rect.width < elementB.rect.x) { } else if (elementA.rect.x > elementB.rect.x + elementB.rect.width) { } else if (elementA.rect.y + elementA.rect.height < elementB.rect.y) { } else if (elementA.rect.y > elementB.rect.y + elementB.rect.height) { } else { elementA.isHit = elementB.isHit = true; } } } bmd.lock(); bmd.colorTransform(bmd.rect, COLOR_TRANS); for (i = 0; i < myrects.length; i++) { elementA = myrects[ i ] as ObjMyRect; bmd.fillRect(new Rectangle(elementA.rect.x, elementA.rect.y, elementA.rect.width, elementA.rect.height), elementA.isHit ? 0x990000 : 0x666666); } bmd.unlock(); } private function onEnterFrameC(event:Event):void { var i:int, j:int; var elementA:ObjSprite; var elementB:ObjSprite; for (i = 0; i < sprites.length; i++) { elementA = sprites[ i ] as ObjSprite; elementA.x += elementA.vx; elementA.y += elementA.vy; if (elementA.x < 0 || elementA.x > STAGE_W) elementA.vx *= -1; if (elementA.y < 0 || elementA.y > STAGE_H) elementA.vy *= -1; elementA.isHit = false; } for (i = 0; i < sprites.length; i++) { elementA = sprites[ i ] as ObjSprite; for (j = 0; j < sprites.length; j++) { if (j <= i) continue; elementB = sprites[ j ] as ObjSprite; if (elementA.hitTestObject(elementB)) { elementA.isHit = elementB.isHit = true; } } } } } } import flash.display.*; import flash.geom.*; class ObjRectangle { public var isHit:Boolean; public var rect:Rectangle; public var vx:Number; public var vy:Number; } class ObjMyRect { public var isHit:Boolean; public var rect:MyRect; public var vx:Number; public var vy:Number; } class ObjSprite extends Sprite { public function ObjSprite() { hitGr = new Shape(); hitGr.graphics.beginFill(0x990000); hitGr.graphics.drawRect(0, 0, 10, 10); addChild(hitGr); defGr = new Shape(); defGr.graphics.beginFill(0x666666); defGr.graphics.drawRect(0, 0, 10, 10); addChild(defGr); } public var defGr:Shape; public var hitGr:Shape; private var _isHit:Boolean; public function get isHit():Boolean { return _isHit; } public function set isHit(value:Boolean):void { _isHit = value; hitGr.visible = _isHit; defGr.visible = !_isHit; } public var vx:Number; public var vy:Number; } class MyRect { public function MyRect(x:Number, y:Number, width:Number, height:Number) { this.x = x; this.y = y; this.width = width; this.height = height; } public var height:Number; public var width:Number; public var x:Number; public var y:Number; }