JS1k 2010 - 470 - Details - A ground breaking JavaScript golfing competition

Author:

Dustin Silverman

Twitter:

GitHub:

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Reddit:

/r/

Pouet:

Website:

Compo:

classic

Demo link:

https://js1k.com/2010-first/demo/470

Shortlink:

https://js1k.com/470

Blog post:

please update here!

Bytes:

1007

Chars:

1007

Submission

X=document.getElementById('c');R=X.width=X.height=600;Q=300;X=X.getContext('2d');X.strokeStyle='green';X.translate(Q,Q);H=.5;M=Math;C=M.cos;S=M.sin;P=M.PI/2;F='window.onkeyup=function(e){t=e.keyCode-31;l=t-6?t-8?l:0:-0;f=t-7?t-9?f:-0:0;t==0?[g[1]=x,g[2]=y,a=S(r),b=C(r)]:0};';B='a=b=p=l=f=r=x=y=0;o=[[c=[-.1],g=[0,R,R],d=[.1]]];for(i=14;i+16;i--){t=M.floor(M.random()*30);for(j=4;j;j--){o.push([[-H,i+H,t+H],[H,j&2?i+1:i,j+1&2?t+1:t],[H,j+1&2?i+1:i,j&2?t:t+1]]);}}T();';eval(F.replace('up','down').replace(/0/g,1)+F+B);function T(){p+=t=new Date().getTime()-p;t=p-t?t/Q:(h=p)&0;r+=t*l;r%=4*P;x+=S(r)*t*f;y+=C(r)*t*f;c[1]=d[1]=g[1];c[2]=d[2]=g[2];g[1]+=a*t*4;g[2]+=b*t*4;X.fillRect(-Q,-Q,R,R);X.beginPath();for(i in o){for(j in o[i]){t=o[i][j];m=t[1]-x;n=t[2]-y;v=(S(r)*m+C(r)*n)/Q;m=S(r+P)*m+C(r+P)*n;if(j==0){s=t[1]-g[1];w=t[2]-g[2];v=i!=0&&s<H&&s>-H&&w<H&&w>-H?o.splice(i,4)&0:v;if(v<1/Q)break;X.moveTo(m/v,t[0]/v)}else X.lineTo(m/v,t[0]/v)}}X.stroke();if(o.length==1){alert(p-h);eval(B)}setTimeout(T,33)}

Description

Initially an attempt to recreate Battlezone in javascript, then cut down to a simple first person engine to keep it under 1k. With the latest update it has been turned into a bit of a game, try to get the fastest time eliminating all the pyramids. Use arrow keys to move, spacebar to shoot. Thanks to Vincent Gable (vincentgable.com) for helping me get the code small enough that I was able to add in the shooting and game code.

Base64 encoded

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

Original source

X = document.getElementById('c');
R = X.width = X.height = 600;
Q = 300;
X = X.getContext('2d');
X.strokeStyle='green';
X.translate(Q,Q);
H=.5;
M = Math;
C = M.cos;
S = M.sin;
P = M.PI/2;
F = 'window.onkeyup=function(e){t=e.keyCode-31;l=t-6?t-8?l:0:-0;f=t-7?t-9?f:-0:0;t==0?[g[1]=x,g[2]=y,a=S(r),b=C(r)]:0};';
B = 'a=b=p=l=f=r=x=y=0;o=[[c=[-.1],g=[0,R,R],d=[.1]]];for(i=14;i+16;i--){t=M.floor(M.random()*30);for(j=4;j;j--){o.push([[-H,i+H,t+H],[H,j&2?i+1:i,j+1&2?t+1:t],[H,j+1&2?i+1:i,j&2?t:t+1]]);}}T();';
eval(F.replace('up','down').replace(/0/g,1)+F+B);

function T(){
	p += t = new Date().getTime()-p;
	t = p-t?t/Q:(h=p)&0;
	r += t*l;
	r %= 4*P;
	x += S(r)*t*f;
	y += C(r)*t*f;
	c[1] = d[1] = g[1];
	c[2] = d[2] = g[2];
	g[1] += a*t*4;
	g[2] += b*t*4;
	X.fillRect(-Q,-Q,R,R);
	X.beginPath();
	for(i in o){
		for(j in o[i]){
			t = o[i][j];
			m = t[1]-x;
			n = t[2]-y;
			v = (S(r)*m+C(r)*n)/Q;
			m = S(r+P)*m+C(r+P)*n;
			if(j==0){
				s = t[1]-g[1];
				w = t[2]-g[2];
				v = i!=0&&s<H&&s>-H&&w<H&&w>-H?o.splice(i,4)&0:v;
				if(v<1/Q) break;
				X.moveTo(m/v,t[0]/v);
			}else X.lineTo(m/v,t[0]/v);
		}
	}
	X.stroke();
	if(o.length==1){alert(p-h);eval(B);}
	setTimeout(T,33);
}

JS1k: The JavaScript code golfing competition

2010 - The Original