js实现div色块碰撞

2023-08-03 00:23:04 58

functionDragObj(_obj){ this.obj=_obj; this.point={}; this.moveBool=false; this.obj.self=this; this.obj.addEventListener("mousedown",this.mouseHandler); this.obj.addEventListener("mouseup",this.mouseHandler); this.obj.addEventListener("mousemove",this.mouseHandler); this.obj.addEventListener("mouseleave",this.mouseHandler); } DragObj.prototype={ mouseHandler:function(e){ if(!e){ e=window.event; } if(e.type=="mousedown"){ this.self.moveBool=true; this.self.point.x=e.offsetX; this.self.point.y=e.offsetY; }elseif(e.type=="mousemove"){ if(!this.self.moveBool)return; this.self.obj.style.left=(e.clientX-this.self.point.x)+"px" this.self.obj.style.top=(e.clientY-this.self.point.y)+"px" }elseif(e.type=="mouseup"||e.type=="mouseleave"){ this.self.moveBool=false; } }, removeEvent:function(){ this.obj.removeEventListener("mousedown",this.mouseHandler); this.obj.removeEventListener("mouseup",this.mouseHandler); this.obj.removeEventListener("mousemove",this.mouseHandler); this.obj.removeEventListener("mouseleave",this.mouseHandler); this.obj=null; this.point=null; } }; varHitTest=HitTest||(function(){ return{ to:function(display0,display1){ varrect=display0.getBoundingClientRect(); varrect1=display1.getBoundingClientRect(); if(rect.left>=rect1.left&& rect.left<=rect1.left+rect1.width &&rect.top>=rect1.top&&rect.top<=rect1.top+rect1.height){ returntrue; } if(rect.left+rect.width>=rect1.left&&rect.left+rect.width<=rect1.left+rect1.width&&rect.top>=rect1.top &&rect.top<=rect1.top+rect1.height){ returntrue; } if(rect.left>=rect1.left&& rect.left<=rect1.left+rect1.width &&rect.top+rect.height>=rect1.top&& rect.top+rect.height<=rect1.top+rect1.height){ returntrue; } if(rect.left+rect.width>=rect1.left&&rect.left+rect.width<=rect1.left+rect1.width&& rect.top+rect.height>=rect1.top &&rect.top+rect.height<=rect1.top+rect1.height){ returntrue; } } } })(); varLoadImg=LoadImg||(function(){ return{ load:function(listSrc,callBack){ this.callBack=callBack; this.listSrc=listSrc; this.num=0; this.imgArr=[]; varimg=newImage(); img.addEventListener("load",this.loadHandler.bind(this)); img.src=listSrc[0]; }, loadHandler:function(e){ if(!e){ e=window.event; } e.currentTarget.removeEventListener ("load",this.loadHandler.bind(this)); this.imgArr[this.num]=e.currentTarget; if(this.num==this.listSrc.length-1){ this.callBack(this.imgArr) return; } varimg=newImage(); this.num++; img.addEventListener("load",this.loadHandler.bind(this)); img.src=this.listSrc[this.num]; } } })();

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js实现div色块碰撞

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