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<!DOCTYPE html>
<html><head><meta name="viewport" content="width=device-width, initial-scale=1.0">
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
<TITLE>Columns</TITLE>
<link rel="stylesheet" href="../styles.css"></head>
<body onkeydown="keydown(event)" onblur="needPause()" onload="startGame()">
<!--<div class="sidenav" id="common"></div><div class="main">-->
<div class="topnav" id="myTopnav"></div><div class="main">
<h2>"Columns" game</h2>
<canvas id="myCanvas" width="700" height="550" onmousedown="mousedown(event)">
Your browser does not support the HTML5 canvas tag.</canvas></div>
<script type="text/javascript" src="../accordion.js"></script>
<script>
var ctx;
var bar = 25; // block size in px (default)
var nx = 10, ny = 20; // box size
var fX, fY; // figure position (lowest point)
var next = [];
var fig = [];
var cols = ['none', '#FF00FF', '#00FF00', '#0000FF', '#FFFF00', '#00FFFF', '#FF0000', 'silver'];
var dols = ['none', '#7F007F', '#007F00', '#00007F', '#7F7F00', '#007F7F', '#7F0000', 'gray'];
var box = [];
var level = 0;
var nlines = 0;
var score = 0;
var interval;
var hiscore = 0;
var paused = 0;
var finished = 0;
var marked = 0;
var preview = 0;
var step = 0.1; // step of down-shift (higher is more complex)
function needPause()
{ if(paused==0) pause(); }
function pause() // useless
{
paused = 1-paused;
if(paused)
{
if(score > hiscore)
{ hiscore = score;
localStorage.setItem("hiscoreHexris", hiscore); }
clearInterval(interval); draw();
}
else if(!finished) interval = setInterval(updateCanvas, 30);
}
function startGame()
{
ctx = document.getElementById("myCanvas").getContext("2d");
ctx.lineCap="round";
newFig(); newFig(); level = 0; step = 1./32;
score = 0; nlines = 0; paused = 0; finished = 0;
for(var i=0;i<nx*ny;i++) box[i] = 0;
hiscore = localStorage.getItem("hiscoreColumns");
if(!hiscore) hiscore = 0;
// document.getElementById("hiscore").innerHTML = hiscore;
interval = setInterval(updateCanvas, 30);
}
function newFig()
{
fig = next.slice();
next[0] = 1+Math.floor(Math.random()*(cols.length-2));
next[1] = 1+Math.floor(Math.random()*(cols.length-2));
next[2] = 1+Math.floor(Math.random()*(cols.length-2));
fX = Math.floor(nx/2); fY = ny-2;
}
function finish() // game over
{
finished = 1; draw();
ctx.font="40px Arial";
ctx.fillStyle = 'black';
ctx.fillText("GAME OVER", ctx.canvas.width/4, ctx.canvas.height/2);
if(score > hiscore)
{ hiscore = score;
localStorage.setItem("hiscoreColumns", hiscore); }
// document.getElementById("hiscore").innerHTML = hiscore;
clearInterval(interval);
}
function moveLeft()
{
var y = Math.floor(fY);
if(fX>0 && box[fX-1+nx*y]==0) fX -= 1;
}
function moveRight()
{
var y = Math.floor(fY);
if(fX<nx-1 && box[fX+1+nx*y]==0) fX += 1;
}
function canFall()
{
var y = Math.floor(fY-1);
if(y<0 || box[fX+nx*y]>0) return 0;
return 1;
}
function putFig()
{
var y = Math.floor(fY);
box[fX+nx*y] = fig[0];
box[fX+nx*(y+1)] = fig[1];
box[fX+nx*(y+2)] = fig[2];
score += 1;
markLines();
}
function moveDown()
{ if(canFall()) fY -= 1; }
function fallDown()
{
while(canFall()) fY -= 1;
putFig(); newFig();
}
function rotate()
{
var f = fig[0];
fig[0] = fig[1]; fig[1] = fig[2]; fig[2] = f;
}
function updateCanvas()
{
if(paused) { draw(); return; }
if(marked>0)
{
marked -= 1;
if(marked==0) removeLines();
}
else if(canFall())
fY -= step;
else
{
putFig();
newFig();
if(!canFall()) finish();
}
draw();
}
function markLines()
{
var rem = [];
for(var j=0;j<ny;j++) for(var i=0;i<nx;i++) rem[i+nx*j] = 0;
for(var j=1;j<ny-1;j++) for(var i=1;i<nx-1;i++) // main field
{
var i0 = i+nx*j, c = box[i0];
if(c>0)
{
if(box[i0-1]==c && box[i0+1]==c)
{ rem[i0-1]=1; rem[i0]=1; rem[i0+1]=1; }
if(box[i0-nx]==c && box[i0+nx]==c)
{ rem[i0-nx]=1; rem[i0]=1; rem[i0+nx]=1; }
if(box[i0-1-nx]==c && box[i0+1+nx]==c)
{ rem[i0-1-nx]=1; rem[i0]=1; rem[i0+1+nx]=1; }
if(box[i0-1+nx]==c && box[i0+1-nx]==c)
{ rem[i0-1+nx]=1; rem[i0]=1; rem[i0+1-nx]=1; }
}
}
for(var j=1;j<ny-1;j++) // vertical boundaries
{
var i0 = nx*j, i1 = nx-1+nx*j, c0 = box[i0], c1 = box[i1];
if(c0>0 && box[i0-nx]==c0 && box[i0+nx]==c0)
{ rem[i0-nx]=1; rem[i0]=1; rem[i0+nx]=1; }
if(c1>0 && box[i1-nx]==c1 && box[i1+nx]==c1)
{ rem[i1-nx]=1; rem[i1]=1; rem[i1+nx]=1; }
}
for(var i=1;i<nx-1;i++) // horizontal boundary
{
var c = box[i];
if(c>0 && box[i-1]==c && box[i+1]==c)
{ rem[i-1]=1; rem[i]=1; rem[i+1]=1; }
}
var cr = cols.length-1;
for(var j=0;j<ny;j++) for(var i=0;i<nx;i++)
{
if(rem[i+nx*j]>0) { box[i+nx*j] = cr; marked = 5; }
}
}
function removeLines()
{
var ok=1, c = cols.length-1, rem = 0, items=0;
while(ok)
{
ok = 0;
for(var i=0;i<nx;i++) for(var j=0;j<ny;j++)
{
if(box[i+nx*j]==c)
{
ok = 1; items += 1;
for(var k=j+1;k<ny;k++) box[i+nx*(k-1)] = box[i+nx*k];
box[i+nx*(ny-1)] = 0;
}
}
}
if(preview)
score += items*items*4*level;
else
score += items*items*10*level;
nlines += items;
if(nlines>=30*level)
{ level += 1; step = Math.pow(2,level/4-5);
if(level>15) level = 15; }
markLines(); // TODO summary score ?!!
}
function drawSq(i,j,col,col2)
{
cwidth = ctx.canvas.width;
cheight = ctx.canvas.height;
var s = cheight/22/bar, r = bar*s;
var x = r*(i+1), y = r*(ny-j);
ctx.beginPath();
if(col!='none')
{
var grd=ctx.createRadialGradient(x+0.5*r,y-r/3,r/5,x+0.5*r,y,r);
grd.addColorStop(0,"white");
grd.addColorStop(1,col);
ctx.fillStyle = grd;
}
ctx.rect(x,y,r,r); if(col!='none') ctx.fill();
ctx.strokeStyle = col2;
ctx.stroke();
}
function draw()
{
cwidth = ctx.canvas.width;
cheight = ctx.canvas.height;
var s = cheight/22/bar;
ctx.clearRect(0, 0, cwidth, cheight);
// boundary
for(var i=0;i<=ny;i++)
{
drawSq(-1,i,'gray','black');
drawSq(nx,i,'gray','black');
}
for(var i=0;i<=nx+1;i++) drawSq(i-1,-1,'gray','black');
// existing bricks
for(var i=0;i<nx;i++) for(var j=0;j<ny;j++)
{
var c = box[i+nx*j];
if(c) drawSq(i,j,cols[c],'black');
else drawSq(i,j,'none','lightgray');
}
// figure
var x = Math.floor(fX), y = Math.floor(fY);
drawSq(x,y,cols[fig[0]],'black');
drawSq(x,y+1,cols[fig[1]],'black');
drawSq(x,y+2,cols[fig[2]],'black');
// preview figure
if(preview)
{
drawSq(nx+7.5,10,cols[next[0]],'black');
drawSq(nx+7.5,11,cols[next[1]],'black');
drawSq(nx+7.5,12,cols[next[2]],'black');
ctx.strokeStyle = 'black';
ctx.strokeRect((nx+5)*bar*s,6*bar*s,8*bar*s,7*bar*s);
var x = Math.floor(fX), y = Math.floor(fY), dy;
for(dy=0;dy<=y;dy++) if(box[x+nx*(y-dy)]>0) break;
drawSq(x,y-dy+1,'none','black');
drawSq(x,y-dy+2,'none','black');
drawSq(x,y-dy+3,'none','black');
}
ctx.font="24px Arial"; // score
ctx.fillStyle = 'black';
ctx.fillText("Score: "+score, (nx+4)*s*bar, bar*s);
ctx.fillText("Level: "+level, (nx+11)*s*bar, s*bar);
ctx.fillStyle = 'darkgreen';
ctx.fillText("HiScore: "+hiscore, (nx+4)*s*bar, 2*bar*s);
var dh = s*100, b = dh/10;
var y0 = cheight-2*dh, x0 = s*bar*(nx+3);
ctx.strokeStyle = 'blue'; ctx.fillStyle = 'lightblue';
ctx.strokeRect(x0+b, y0+b, dh-2*b, dh-2*b); // left
ctx.beginPath();
ctx.moveTo(x0+dh/4,y0+dh/2);
ctx.lineTo(x0+3*dh/4,y0+3*dh/4);
ctx.lineTo(x0+3*dh/4,y0+dh/4);
ctx.lineTo(x0+dh/4,y0+dh/2); ctx.fill(); ctx.stroke();
ctx.strokeRect(x0+dh+b, y0+b, dh-2*b, dh-2*b); // rotate
ctx.beginPath();
ctx.arc(x0+3*dh/2, y0+dh/2, 0.3*dh, 0, 2*Math.PI);
ctx.fill(); ctx.stroke();
ctx.beginPath(); ctx.fillStyle = 'white';
ctx.arc(x0+3*dh/2, y0+dh/2, 0.2*dh, 0, 2*Math.PI);
ctx.fill(); ctx.stroke();
ctx.strokeRect(x0+2*dh+b, y0+b, dh-2*b, dh-2*b); // right
ctx.beginPath(); ctx.fillStyle = 'lightblue';
ctx.moveTo(x0+2*dh+3*dh/4,y0+dh/2);
ctx.lineTo(x0+2*dh+dh/4,y0+3*dh/4);
ctx.lineTo(x0+2*dh+dh/4,y0+dh/4);
ctx.lineTo(x0+2*dh+3*dh/4,y0+dh/2); ctx.fill(); ctx.stroke();
y0 += dh;
ctx.strokeStyle = 'green'; ctx.fillStyle = 'lightgreen';
/* ctx.strokeRect(x0+b, y0+b, dh-2*b, dh-2*b); // fall left
ctx.beginPath();
ctx.moveTo(x0+3*dh/4,y0+0.2*dh);
ctx.lineTo(x0+5*dh/8,y0+0.2*dh);
ctx.lineTo(x0+5*dh/8,y0+dh/2);
ctx.lineTo(x0+0.4*dh,y0+dh/2);
ctx.lineTo(x0+0.4*dh,y0+3*dh/8);
ctx.lineTo(x0+0.2*dh,y0+5*dh/8);
ctx.lineTo(x0+0.4*dh,y0+7*dh/8);
ctx.lineTo(x0+0.4*dh,y0+6*dh/8);
ctx.lineTo(x0+3*dh/4,y0+6*dh/8);
ctx.lineTo(x0+3*dh/4,y0+0.2*dh); ctx.fill(); ctx.stroke();*/
x0 += dh;
ctx.strokeRect(x0+b, y0+b, dh-2*b, dh-2*b); // fall down
ctx.beginPath();
ctx.moveTo(x0+dh/2,y0+3*dh/4);
ctx.lineTo(x0+3*dh/4,y0+dh/4);
ctx.lineTo(x0+dh/4,y0+dh/4);
ctx.lineTo(x0+dh/2,y0+3*dh/4); ctx.fill(); ctx.stroke();
ctx.beginPath();
ctx.rect(x0+dh/4,y0+3*dh/4,dh/2,dh/16);
ctx.fill(); ctx.stroke();
x0 += dh;
/* ctx.strokeRect(x0+b, y0+b, dh-2*b, dh-2*b); // fall right
ctx.beginPath();
ctx.moveTo(x0+dh/4,y0+0.2*dh);
ctx.lineTo(x0+3*dh/8,y0+0.2*dh);
ctx.lineTo(x0+3*dh/8,y0+dh/2);
ctx.lineTo(x0+0.6*dh,y0+dh/2);
ctx.lineTo(x0+0.6*dh,y0+3*dh/8);
ctx.lineTo(x0+0.8*dh,y0+5*dh/8);
ctx.lineTo(x0+0.6*dh,y0+7*dh/8);
ctx.lineTo(x0+0.6*dh,y0+6*dh/8);
ctx.lineTo(x0+dh/4,y0+6*dh/8);
ctx.lineTo(x0+dh/4,y0+0.2*dh); ctx.fill(); ctx.stroke();*/
x0 -= 2*dh; y0 -= 4*dh; // preview
ctx.strokeStyle = 'magenta'; ctx.fillStyle = 'violet';
if(preview)
{
ctx.fillStyle = 'lightpink';
ctx.fillRect(x0+b, y0+b, dh-2*b, dh-2*b);
}
ctx.strokeRect(b+x0, y0+b, dh-2*b, dh-2*b);
ctx.beginPath();
ctx.arc(x0+dh/2,y0+dh/4,dh/2,Math.PI/4,3*Math.PI/4);
ctx.stroke();
ctx.beginPath();
ctx.arc(x0+dh/2,y0+3*dh/4,dh/2,-3*Math.PI/4,-Math.PI/4);
ctx.stroke();
ctx.beginPath();
ctx.arc(x0+dh/2,y0+dh/2,dh/5,0,2*Math.PI);
ctx.fill(); ctx.stroke();
x0 += dh; ctx.strokeStyle = 'red';
if(paused)
{
ctx.fillStyle = 'pink';
ctx.fillRect(x0+b, y0+b, dh-2*b, dh-2*b);
}
ctx.strokeRect(b+x0, y0+b, dh-2*b, dh-2*b);
ctx.beginPath(); ctx.fillStyle = 'salmon';
ctx.rect(x0+dh/4,y0+dh/4,dh/8,dh/2);
ctx.rect(x0+5*dh/8,y0+dh/4,dh/8,dh/2); ctx.fill(); ctx.stroke();
x0 += dh;
ctx.strokeRect(b+x0, y0+b, dh-2*b, dh-2*b); // run
ctx.beginPath(); ctx.fillStyle = 'salmon';
ctx.moveTo(x0+dh/4,y0+dh/4);
ctx.lineTo(x0+dh/4,y0+3*dh/4);
ctx.lineTo(x0+dh/2,y0+dh/2); ctx.fill(); ctx.stroke();
ctx.moveTo(x0+dh/2,y0+dh/4);
ctx.lineTo(x0+dh/2,y0+3*dh/4);
ctx.lineTo(x0+3*dh/4,y0+dh/2); ctx.fill(); ctx.stroke();
}
function keydown(event) // key is pressed
{
if(event.key == ' ') fallDown();
else if(event.key == 'ArrowUp') rotate();
else if(event.key == 'ArrowDown') moveDown();
else if(event.key == 'ArrowLeft') moveLeft();
else if(event.key == 'ArrowRight') moveRight();
// else if(event.key == 'End') fallRight();
// else if(event.key == 'Home') fallLeft();
}
function mousedown(event) // mouse button is pressed
{
cwidth = ctx.canvas.width;
cheight = ctx.canvas.height;
var s = cheight/22/bar;
var dh = s*100, b = dh/10, y0 = cheight-2*dh;
var xx = event.offsetX-s*bar*(nx+3), yy = event.offsetY-y0;
if(xx<0) pause();
else if(yy>-0.5*dh && yy<dh) // main buttons
{
if(xx<dh) moveLeft();
else if(xx<2*dh) rotate();
else moveRight();
}
else if(yy>dh) // fall buttons
{
// if(xx<dh) fallLeft();
// else if(xx<2*dh)
fallDown();
// else fallRight();
}
else if(yy<-2*dh) // setup buttons
{
if(xx<dh) preview = 1-preview;
else if(xx<2*dh) pause();
else
{ clearInterval(interval); startGame(); }
}
}
</script>
</body>
</html>
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