class CollisionEngine { constructor() { this.objects={}; } genId(a) { var ch = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".split(""); var res = ""; for(var i=0;i=x&&x2>=x||(x2-x1)*(y-y1)/(y2-y1)>=x-x1)) count++; for(var i=2;i=x&&x2>=x||(x2-x1)*(y-y1)/(y2-y1)>=x-x1)) count++; } return count%2; } getFactors(path) { var smx = Number.MAX_SAFE_INTEGER; var smy = Number.MAX_SAFE_INTEGER; var bgx = -Number.MAX_SAFE_INTEGER; var bgy = -Number.MAX_SAFE_INTEGER; for(var i=0;ipath[i]) smx = path[i]; if(smy>path[i+1]) smy = path[i+1]; if(bgx{ if(e.changedTouches) e=e.changedTouches[0]; px=e.clientX; py=e.clientY; }); function frame() { c=document.querySelector("canvas"); c.width=innerWidth; c.height=innerHeight; ctx=c.getContext("2d"); //-=-// if(document.getElementsByTagName("input")[0].value!==v) { v = document.getElementsByTagName("input")[0].value; engine.removeObject(obj1); pathn = genObject(v); obj1 = engine.createNewObject(40,40,pathn); } ctx.fillStyle="white"; if(engine.checkCollision(obj0,obj1)) ctx.fillStyle="red"; ctx.fillRect(px-20,py-20,40,40); ctx.beginPath(); for(var i=0;isetInterval(frame))();

PixelPerfectCollisionEngine