JS1k: The JavaScript code golfing competition

c.width=c.height=400;c.addEventListener("click",h,!1);r=[];p=200;o=100;u=2;g=!1;ga=0;d=function(){var b=r[i][0],e=r[i][1],j=r[i][2],k=r[i][3];a.strokeStyle="#ff1000";a.lineCap="round";a.lineWidth=k;a.beginPath();a.moveTo(b,e);a.lineTo(b,e+j);a.stroke()};function h(b){x=b.clientX-c.offsetLeft;y=b.clientY-c.offsetTop;f=a.getImageData(x,y,1,1).data;255==f[0]&&32==f[1]&&(r.push([x,y,0,1+3*Math.random()]),u=5,g=!0)} l=function(){a.rect(0,0,400,400);a.fillStyle="#DEDEDE";a.fill();for(i=0;i<r.length;i++)d(),r[i][2]+=1.5*Math.random();a.strokeStyle="#222222";a.lineWidth=u;a.fillStyle="#ff2000";a.beginPath();a.moveTo(p-48,o);a.lineTo(p,o+48);a.lineTo(p+48,o);a.arc(p+24,o-24,33.6,0.25*Math.PI,1.25*Math.PI,!0);a.arc(p-24,o-24,33.6,1.75*Math.PI,0.75*Math.PI,!0);a.closePath();a.fill();a.stroke();a.strokeStyle="black";a.lineWidth=0.8;a.strokeText("Don't shoot...",p-32,o-70);g&&(a.strokeStyle="#222222",a.globalAlpha=ga, a.strokeText("WHY?",p-15,o-10),ga+=0.002,a.globalAlpha=1);2<u&&(u-=0.5);setTimeout(l,20)};l();

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//setting canvas dimensions
c.width = c.height = 400;
//click event listener
c.addEventListener('click', e, false);
//array of blood
r = [];
//heart position
p = 200;
o = 100;
//size of heart outline
u = 2;
//has the heart been shot?
g = false;
//alpha for "WHY?" text
ga = 0;

//function to draw a blood streak
d = function(x,y,l,w) {
	a.strokeStyle = "#ff1000";
	a.lineCap = "round";
	a.lineWidth = w;
	a.beginPath();
	a.moveTo(x,y);
	a.lineTo(x,y+l);
	a.stroke();
}

//click event listener
function e(ev) {
    x = ev.clientX - c.offsetLeft;
    y = ev.clientY - c.offsetTop;
    f = a.getImageData(x, y, 1, 1).data;
    if(f[0]==255 && f[1] == 32) {
		r.push([x,y,0,1 + Math.random() * 3]);
		u = 5;
		g = true;
	}
}

//main loop
l = function(){
	//clear canvas
	a.rect(0, 0, 400, 400);
    a.fillStyle = "#DEDEDE";
    a.fill();
	
	//loop through all shot locations, and draw blood streaks.
	for(i = 0; i < r.length;i++) {
		d(r[i][0], r[i][1], r[i][2], r[i][3]);
		r[i][2] += Math.random() * 1.5;
	}
	
	//drawing the heart
	a.strokeStyle = "#222222";
	a.lineWidth = u;
	a.fillStyle = "#ff2000";
	a.beginPath();
	a.moveTo(p - 48, o);
	a.lineTo(p, o + 48);
	a.lineTo(p + 48, o);
	a.arc(p + 24, o - 24, 33.6, 0.25 * Math.PI, 1.25 * Math.PI, true);
	a.arc(p - 24, o - 24, 33.6, 1.75 * Math.PI, 0.75 * Math.PI, true);
	a.closePath();
	a.fill();
	a.stroke();
	
	//"Don't shoot..." text
	a.strokeStyle = "black";
	a.lineWidth = 0.8;
    a.strokeText("Don't shoot...", p - 32, o - 70);
	
	//if shot
	if(g) {
		a.strokeStyle = "#222222";
		a.globalAlpha = ga;
		a.strokeText("WHY?", p - 15, o - 10);
		ga+=0.002;
		a.globalAlpha = 1;
	}
	
	//heart outline
	if(u > 2) {u-=0.5;}
	
	//loop again!
	setTimeout(l, 1000 / 50);  
}
l();