ilovemypixels

Just for reference I have done exactly this here:- http://www.ourtestsite.org/antigravitysnowballgame/ It seems to work o.k. It simply looks for the collision and then kills all tweens and makes a new one using calculated angles. My problem now is that I need to be able to grab the speed of the apple at any point??? Thanks Will

Hi there, I am working on a game that uses Greensocks Physics2d plug-in. I have the object being tweened rebounding off other objects. I need to be able to get the speed of the tweened movieclip at any time. Is there a way to do this that is not processor heavy. My tween looks like this:- TweenMax.to(ball, 20, {physics2D:{velocity:storeVelocity, angle:pingArrow._rotation, gravity:gravity}, onUpdate:doChecks, motionBlur:{strength:mBStrength, quality:mBQuality}}); I set the velocity but obviously the speed decreases over time and depending on the angle it flies. Thanks Will

Aww .. thanks man. That made my afternoon. I'll try the for loop thing it's a good point. As for the motion blur it doesn't seem to affect performance much at all really. I think the main reason it doesn't seem that smooth to me, is that this was based on another interactive banner I made where I did everything using Xspeed and Yspeed variables. These got updated on every frame adding the speed to the X and Y position. This seemed much smoother but I wanted to make my game using greensock as calculating the angle and velocities would have been a headache doing it the other way. (this probably makes no sense to anyone else) but describing the angle and velocity in a tween is much easier than calculating the angle using trigonometry. My main problem then is to do with the ball overlapping the pegs at points. I have seen normal hitTest code that would set the ball back to the right position on collision. This is easy when your object hits a horizontal plane but my pegs are round. So on collision I would have to work out the angle and then the maximum distance to move the ball so it was at the pegs edge. I'm not sure how to do this. Sorry if all this makes no sense at all. I'm in too deep now. Any more help is greatly appreciated. Thanks Will P.s. No I didn't make sucka swing.

Erm .. I'm pretty sure Flash CS5 does a good job of exporting coded animations now?

Hi there, I have made myself a little game loosely based on peggle. You can have a look here:- http://www.ourtestsite.org/antigravitysnowballgame/ Currently it uses Greensocks Physics2DPlugin and MotionBlurPlugin. It works o.k. but I would really appreciate anything you can spot that might make it run smoother. It also runs differently every time and sometimes the ball overlaps the pegs. I have the peg and boundary hit checks running using greensocks onUpdate feature but I'm not sure if this is the best way. Thanks for any help. If you manage to help make it smoother then you can feel free to use my code to make your own game but please don't copy it 100%. Any other comments are greatly appreciated. Will stop(); mainTL = this; import com.greensock.*; import com.greensock.easing.*; import com.greensock.plugins.*; TweenPlugin.activate([Physics2DPlugin, MotionBlurPlugin]); //TweenPlugin.activate([Physics2DPlugin]); ball.cacheAsBitmap = true; // Variables var gravity:Number = 500; var totalPegs:Number = 15; var pegRadius:Number = 10; var ballRadius:Number = 20; // Constants var collisionRadius:Number = pegRadius + ballRadius; var leftBorder:Number = 0; var rightBorder:Number = Stage.width; var topBorder:Number = 0; var bottomBorder:Number = Stage.height + (ballRadius*2) + 20; var activePegs:Array = new Array(); var mBStrength:Number = 0.5; var mBQuality:Number = 0; var reboundVelocity:Number = 350; var dHitNum:Number = 0; var bNum:Number = 0; var lastSecSaveGot:Boolean = false; var gameStatus:String = "idle"; var mainScore:Number = 0; var myHighScore:Number = 0; var hitsNoClicks:Number = 0; var offTheWall:Boolean = false; // Initial setup clickArea._width = rightBorder; clickArea._height = bottomBorder; ballPlatform._y = 570; for(i=0; i activePegs[i] = mainTL["peg" + i]; mainTL["_level0." + i + "hit"] = false; } startAd(); function startAd() { getSharedData(); offScreenMarker._visible = false; TweenMax.killTweensOf(ball); ball._x = 500; ball._y = 544; ballRadius = 20; ball._xscale = 100; ball._yscale = 100; ball.hotSpot._xscale = 100; ball.hotSpot._yscale = 100; ball.snow_whirl._xscale = 100; ball.snow_whirl._yscale = 100; mainScore = 0; } function getSharedData() { ////////// user = SharedObject.getLocal("user_profile"); //user.clear(); if (user.data.score == undefined){ myHighScore = 0; myHighScore_txt.text = "High Score: " + myHighScore; } else { myHighScore = user.data.score; myHighScore_txt.text = "High Score: " + myHighScore; } } function saveSharedData() { user.data.score = mainScore; user.flush(); myHighScore_txt.text = "High Score: " + user.data.score; gotoAndStop('submit_score'); } // Ball interaction clickArea.onPress = function() { ballPressed = true; ballActive = false; } clickArea.onRelease = function() { if(gameStatus != "gameover"){ mainScore -= 100; if(gameStatus == "idle"){ TweenLite.to(ballPlatform, 1, {_y:620, ease:Quad.easeOut, overwrite:false}); } gameStatus = "active"; TweenMax.killTweensOf(ball); ballPressed = false; ballActive = true; hitsNoClicks = 0; offTheWall = false; if(ball._y > 640 && lastSecSaveGot == false){ lastSecSaveGot = true; drawBonus("lastSecondSave"); } var storeVelocity:Number = (getDistance(ball._x, ball._y, _xmouse, _ymouse))*2; if(storeVelocity <= 400){ storeVelocity = 400; } TweenMax.to(ball, 20, {physics2D:{velocity:storeVelocity, angle:pingArrow._rotation, gravity:gravity}, onUpdate:doChecks, motionBlur:{strength:mBStrength, quality:mBQuality}}); } } function toDegrees(radians) :Number{ var degrees = radians * 180/Math.PI return degrees; } function getAngleOf(x1,y1,x2,y2):Number{ var dx = x2-x1; var dy = y2-y1; var angle = Math.atan2(dy,dx); return toDegrees(angle); } function getDistance(x1, y1, x2, y2) { xdist = Math.round(x1 - x2); ydist = Math.round(y1 - y2); distanceFromThis = Math.sqrt((xdist*xdist) + (ydist*ydist)); return distanceFromThis; } function drawPingArrow() { pingArrow._visible = true; pingArrow._x = ball._x; pingArrow._y = ball._y; pingArrow._rotation = getAngleOf(ball._x, ball._y, _xmouse, _ymouse); if(getDistance(ball._x, ball._y, _xmouse, _ymouse) <= 100){ pingArrow._xscale = getDistance(ball._x, ball._y, _xmouse, _ymouse); pingArrow._yscale = getDistance(ball._x, ball._y, _xmouse, _ymouse); } else { pingArrow._xscale = 100; pingArrow._yscale = 100; } } function hidePingArrow() { pingArrow._visible = false; pingBar._visible = false; } function ballDied() { ball._x = 200; //ball._y = } function checkBorders(){ if(ball._x >= rightBorder - ballRadius){ TweenMax.killTweensOf(ball); ball._x = (rightBorder - ballRadius)-4; offTheWall = true; //Bounce off TweenMax.to(ball, 20, {physics2D:{velocity:(reboundVelocity/2), angle:180, gravity:gravity}, onUpdate:doChecks, motionBlur:{strength:mBStrength, quality:mBQuality}}); } else if (ball._x <= leftBorder + ballRadius){ TweenMax.killTweensOf(ball); ball._x = leftBorder + ballRadius; offTheWall = true; //Bounce off TweenMax.to(ball, 20, {physics2D:{velocity:(reboundVelocity/2), angle:0, gravity:gravity}, onUpdate:doChecks, motionBlur:{strength:mBStrength, quality:mBQuality}}); } if(ball._y >= bottomBorder - ballRadius){ TweenMax.killTweensOf(ball); ball._y = bottomBorder - ballRadius; // Do death thing TweenMax.killTweensOf(ball); gameStatus = "gameover"; delete onEnterFrame; gameOver(); } } function checkHit(targetMc, pegNum){ if(getDistance(ball._x, ball._y, targetMc._x, targetMc._y) <= collisionRadius){ // Add 500 to scroe mainScore += 500; TweenMax.killTweensOf(ball); hitsNoClicks++; //TweenLite.to(ball.hotSpot, 1, {_xscale:"10", _yscale:"10", ease:Quad.easeOut, overwrite:false}); //TweenLite.to(ball.snow_whirl, 1, {_xscale:"10", _yscale:"10", ease:Quad.easeOut, overwrite:false}); mainTL[targetMc + "hit"] = true; // Remove deleted peg from array //trace(targetMc); activePegs.splice(pegNum, 1); // Explode peg targetMc.gotoAndPlay('explode'); if(hitsNoClicks >= 2){ drawHitGraphics(targetMc._x, targetMc._y, hitsNoClicks); } if(offTheWall == true){ offTheWall = false; drawBonus("offTheWall") mainScore += 500; } var hitAngle = getAngleOf(ball._x, ball._y, targetMc._x, targetMc._y); TweenMax.to(ball, 20, {physics2D:{velocity:reboundVelocity, angle:hitAngle - 180, gravity:gravity}, onUpdate:doChecks, motionBlur:{strength:mBStrength, quality:mBQuality}}); } } function doChecks(){ checkBorders(); for(i=0; i checkHit(activePegs[i], i); } } function drawHitGraphics(spawnX, spawnY, numHits) { //trace(spawnX); //trace(spawnY); attachMovie("hitGraphic" + numHits, "dHit" + dHitNum, mainTL.getNextHighestDepth()); mainTL["dHit" + dHitNum]._xscale = 1; mainTL["dHit" + dHitNum]._yscale = 1; mainTL["dHit" + dHitNum]._x = spawnX; mainTL["dHit" + dHitNum]._y = spawnY; TweenLite.to(mainTL["dHit" + dHitNum], 0.5, {_xscale:100, _yscale:100, ease:Elastic.easeOut, overwrite:false}); mainScore += (1000*(numHits*0.5)); TweenLite.to(mainTL["dHit" + dHitNum], 0.5, {_alpha:0, overwrite:false, delay:1.5, onComplete:deleteIt, onCompleteParams:[mainTL["dHit" + dHitNum]]}); dHitNum++; } function drawBonus(tBonus){ attachMovie(tBonus, "bClip" + bNum, mainTL.getNextHighestDepth()); mainTL["bClip" + bNum]._xscale = 1; mainTL["bClip" + bNum]._yscale = 1; if(tBonus == "lastSecondSave"){ mainTL["bClip" + bNum]._x = ball._x; mainTL["bClip" + bNum]._y = 570; } else if (tBonus == "offTheWall"){ mainTL["bClip" + bNum]._x = ball._x; mainTL["bClip" + bNum]._y = ball._y; } TweenLite.to(mainTL["bClip" + bNum], 0.5, {_xscale:100, _yscale:100, ease:Elastic.easeOut, overwrite:false}); TweenLite.to(mainTL["bClip" + bNum], 0.5, {_alpha:0, overwrite:false, delay:1.5, onComplete:deleteIt, onCompleteParams:[mainTL["bClip" + bNum]]}); bNum++; } function drawOffScreenMarker(){ offScreenMarker._x = ball._x offScreenMarker._visible = true; } function hideOffScreenMarker(){ offScreenMarker._visible = false; } function gameOver() { TweenMax.killTweensOf(gameOver2); attachMovie("gameOver", "gameOver2", mainTL.getNextHighestDepth()); gameOver2._yscale = 1; gameOver2._xscale = 1; gameOver2._x = 500; gameOver2._y = 300; TweenLite.to(gameOver2, 0.5, {_xscale:100, _yscale:100, ease:Elastic.easeOut, overwrite:false}); TweenLite.to(gameOver2, 0.5, {_alpha:0, overwrite:false, delay:1.5, onComplete:gameOverDone}); } function gameOverDone() { deleteIt(gameOver2); if(mainScore > myHighScore){ saveSharedData(); } else { gotoAndStop('low_score'); } } function deleteIt(dTarget) { //trace(dTarget); //trace("del it"); removeMovieClip(dTarget); } onEnterFrame = function(){ guide_hitsNoClicks.text = hitsNoClicks; collisionRadius = pegRadius + ballRadius; ballRadius = (ball.hotSpot._width/2); bottomBorder = Math.floor(Stage.height + (ballRadius*2) + 20); //trace(bottomBorder); mainScore_txt.text = "Score: " + mainScore; //guideArray.text = activePegs; // Draw ping arrow if(ballPressed == true){ drawPingArrow(); } else { hidePingArrow(); } if (ball._y <= topBorder + ballRadius){ drawOffScreenMarker(); } else { hideOffScreenMarker(); } }