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抽出1个小时制作一款简单的物理小游戏(绳子原理)

前天公司聚会,在一起玩游戏,游戏虽然及其简单,但是却很适合在活动中玩,因为公司参加聚会的人比较多,所以只有一部分人玩到了。晚上回家后我试着将其中一款游戏用html5还原了一下,第二天给大家玩儿,在公司的人气爆火,尤其女生,边玩边叫,“おもしろい!!”,“難しい!!”...。

var bx = 250,by=40;
    var box01,box02;
	box01 = new LSprite();
	box01.x = bx;
	box01.y = 30;
	backLayer.addChild(box01);
	box01.addBodyCircle(10,0,0,0,1,10,0.2);
	linelist = [box01];
    for(var i=0;i<20;i++){
	    box02 = new LSprite();
	    box02.x = bx;
	    box02.y = by+i*10;
	    backLayer.addChild(box02);
	    box02.addBodyCircle(10,0,0,1,1,10,0.2);
	    LGlobal.box2d.setRevoluteJoint(box02.box2dBody, box01.box2dBody );
	    linelist.push(box02);
    	box01 = box02;
    } 
hero = new LSprite();
	var bit = new LBitmap(new LBitmapData(imglist["chara03"]));
	bit.x = -25;
	bit.y = -20;
	hero.addChild(bit);
	hero.bitmap = bit;
	hero.x = bx;
	hero.y = by+i*10;
	backLayer.addChild(hero);
	hero.addBodyPolygon(30,50,1,2,10,.2);
	joinline = LGlobal.box2d.setRevoluteJoint(hero.box2dBody, box01.box2dBody ); 
backLayer.addEventListener(LEvent.ENTER_FRAME,onframe);
	backLayer.addEventListener(LMouseEvent.MOUSE_DOWN,ondown);
	backLayer.addEventListener(LMouseEvent.MOUSE_UP,onup); 
function ondown(event){	
	if(out)return;
	monseIsDown = true;	
	mouseObject.x = event.offsetX;
}
function onup(event){	
	if(out)return;
	monseIsDown = false;
	LGlobal.box2d.world.DestroyJoint(joinline);
	hero.bitmap.bitmapData = new LBitmapData(imglist["chara04"])
	hero.bitmap.x = 0;
	hero.bitmap.y = 0;
	out = true;
} 
backLayer.graphics.clear();
	backLayer.graphics.drawRect(1,"#000000",[0,0,LGlobal.width,LGlobal.height]);
	for(var i=0;i<linelist.length - 1;i++){
		backLayer.graphics.drawLine(2,"#000000",[linelist[i].x,linelist[i].y,linelist[i+1].x,linelist[i+1].y]);
	} 
if(monseIsDown && !out){	
		if(checkIndex++ > 10){
			checkIndex = 0;
			if(LGlobal.offsetX - mouseObject.x > 50){
				var force = 50;
				var vec = new LGlobal.box2d.b2Vec2(force,0);
				hero.box2dBody.ApplyForce(vec, hero.box2dBody.GetWorldCenter());
			}else if(LGlobal.offsetX - mouseObject.x < -50){
				var force = 50;
				var vec = new LGlobal.box2d.b2Vec2(-force,0);
				hero.box2dBody.ApplyForce(vec, hero.box2dBody.GetWorldCenter());
			}
			mouseObject.x = LGlobal.offsetX;
		}	
	}	 
if(!out)return;
	backLayer.x = LGlobal.width*0.5 - hero.x;
	if(backLayer.x > 0){
		backLayer.x=0;
	}
	LGlobal.box2d.synchronous();
	if(!hero.box2dBody.IsAwake() && out){
		backLayer.removeEventListener(LEvent.ENTER_FRAME,onframe);
		point = Math.floor((hero.x - 250)*0.1);

		var rank = new GameRanking();
		backLayer.addChild(rank);
	} 

而非debug模式下,就成了下面的界面了。

三,源码

最后给出本次游戏的源代码

http://lufylegend测试数据/lufylegend_download/box2dJump.rar

注:只含游戏源码,lufylegend.js引擎和box2dweb引擎请看准备部分自己下载

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