Basic test implementation of an ice flag. Allows for slick parts of terrain. Intended for ice gun, or "ice" mask on portions of land objects.
In this test variant it is triggered on girders/objects/bridges of the snow/christmas theme, or on a map that uses blue as a mask colour. Probably needs sheepluva's slope detection to make slopes more slippery to climb.
<!doctype html>
<html>
<head>
<title>Hedgewars Theme Editor</title>
<script type="text/javascript">
var sky, clouds, horizont, water, land, border;
var skyColor, waterTopColor, waterBottomColor;
var elements = 7;
var landArray;
function landFunction(x){
return 384 - 192 * Math.sin(x * Math.PI/512);
}
function tryToDraw(){
if (--elements <= 0) {
draw();
}
}
function load(){
var canvas = document.getElementById('preview');
if (canvas.getContext){
var ctx = canvas.getContext('2d');
ctx.fillStyle = '#0b294b';
ctx.fillRect(0, 0, 512, 384);
ctx.font = "40pt Arial";
ctx.fillStyle = '#2b7bd5';
ctx.fillText('Loading Images...', 32, 212);
}
sky = new Image();
sky.onload = tryToDraw;
sky.src = 'http://hedgewars.googlecode.com/hg/share/hedgewars/Data/Themes/Nature/Sky.png';
clouds = new Image();
clouds.onload = tryToDraw;
clouds.src = 'http://hedgewars.googlecode.com/hg/share/hedgewars/Data/Graphics/Clouds.png';
horizont = new Image();
horizont.onload = tryToDraw;
horizont.src = 'http://hedgewars.googlecode.com/hg/share/hedgewars/Data/Themes/Nature/horizont.png';
land = new Image();
land.onload = tryToDraw;
land.src = 'http://hedgewars.googlecode.com/hg/share/hedgewars/Data/Themes/Nature/LandTex.png';
border = new Image();
border.onload = tryToDraw;
border.src = 'http://hedgewars.googlecode.com/hg/share/hedgewars/Data/Themes/Nature/Border.png';
water = new Image();
water.onload = tryToDraw;
water.src = 'http://hedgewars.googlecode.com/hg/share/hedgewars/Data/Graphics/BlueWater.png';
landArray = new Array(512);
for (var x = 0; x < landArray.length; x++)
landArray[x] = landFunction(x);
skyColor = '#131252';
document.getElementById('skyColor').value = skyColor;
waterTopColor = '#555C9D';
document.getElementById('waterTopColor').value = waterTopColor;
waterBottomColor = '#343C7D';
document.getElementById('waterBottomColor').value = waterBottomColor;
tryToDraw();
}
function draw(){
var canvas = document.getElementById('preview');
if (canvas.getContext){
var ctx = canvas.getContext('2d');
ctx.fillStyle = skyColor;
ctx.fillRect(0, 0, 512, 384);
ctx.drawImage(sky, 0, 64, 512, 256);
for (var i = 0; i < 4; i++)
ctx.drawImage(clouds, 0, i * 128, 256, 128, i * 128, 64, 128, 64);
ctx.drawImage(horizont, 0, 192, 512, 128);
ctx.save();
ctx.beginPath();
ctx.moveTo(0, 384);
for (var x = 0; x < landArray.length; x++)
ctx.lineTo(x, landArray[x]);
ctx.clip();
for (var i = 0; i < 2; i++)
for (var k = 0; k < 2; k++)
ctx.drawImage(land, i * 320, k * 240, 320, 240);
ctx.restore();
var k = 0;
for (var x = 0; x < landArray.length; x++) {
if (++k == 64)
k = 0;
ctx.drawImage(border, k, 0, 2, 16, x, landArray[x] - 4, 1, 8);
}
var gradient = ctx.createLinearGradient(0, 320, 0, 384);
gradient.addColorStop(0, waterTopColor);
gradient.addColorStop(1, waterBottomColor);
ctx.fillStyle = gradient;
ctx.fillRect(0, 320, 512, 384);
for (var i = 0; i < 8; i++)
ctx.drawImage(water, i * 64, 308, 64, 24);
}
}
</script>
<style type="text/css">
canvas { border: 1px solid black; }
</style>
</head>
<body onload="load();">
<h1>Hedgewars Theme editor</h1>
<canvas id="preview" width="512" height="384">Sorry, your browser does not support Canvas.</canvas><br>
<table>
<tr><td>Sky:</td><td>
<input id="sky" type="file" accept="image/png" onchange="sky.src = window.URL.createObjectURL(this.files[0])"></input>
</td></tr>
<tr><td>Sky Color:</td><td>
<input id="skyColor" type="color" onchange="skyColor = this.value; draw()"></input>
</td></tr>
<tr><td>Clouds:</td><td>
<input id="clouds" type="file" accept="image/png" onchange="clouds.src = window.URL.createObjectURL(this.files[0])"></input>
</td></tr>
<tr><td>Horizont:</td><td>
<input id="horizont" type="file" accept="image/png" onchange="horizont.src = window.URL.createObjectURL(this.files[0])"></input>
</td></tr>
<tr><td>Land:</td><td>
<input id="land" type="file" accept="image/png" onchange="land.src = window.URL.createObjectURL(this.files[0])"></input>
</td></tr>
<tr><td>Border:</td><td>
<input id="border" type="file" accept="image/png" onchange="border.src = window.URL.createObjectURL(this.files[0])"></input>
</td></tr>
<tr><td>Water:</td><td>
<input id="water" type="file" accept="image/png" onchange="water.src = window.URL.createObjectURL(this.files[0])"></input>
</td></tr>
<tr><td>Water Top Color:</td><td>
<input id="waterTopColor" type="color" onchange="waterTopColor = this.value; draw()"></input>
</td></tr>
<tr><td>Water Bottom Color:</td><td>
<input id="waterBottomColor" type="color" onchange="waterBottomColor = this.value; draw()"></input>
</td></tr>
</table>
</body>
</html>