Created
January 17, 2015 23:00
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// ==UserScript== | |
// @name TagPro Tile Pattern | |
// @namespace http://www.reddit.com/u/snaps_/ | |
// @description Tints every other floor tile a slightly different shade. | |
// @include http://tagpro-*.koalabeast.com:* | |
// @include http://tangent.jukejuice.com:* | |
// @include http://*.newcompte.fr:* | |
// @license GPL version 3 or any later version; http://www.gnu.org/copyleft/gpl.html | |
// @author snaps | |
// @version 0.1.0 | |
// ==/UserScript== | |
/* User-Defined Variables */ | |
// The color to tint the floor tiles. | |
var TINT_COLOR = "#663300"; | |
// How much to tint the floor tiles. Should be a number from 0 to 1. | |
// In practice try values from 0.05 to 1 in increments of .2 to start, | |
// then smaller amounts to hone in on what you like. | |
var OPACITY = 0.05; | |
/* End of User-Defined Variables */ | |
/** | |
* Executes `fn` when the relevant parts of the `tagpro` object have | |
* been initialized. | |
* @param {Function} fn - The function to execute. | |
*/ | |
function waitForInitialized(fn) { | |
if (!tagpro || !tagpro.tiles || !tagpro.tiles.draw || !tagpro.renderer) { | |
setTimeout(function() { | |
waitForInitialized(fn); | |
}, 10); | |
} else { | |
// Only override if we load early enough. | |
if (!tagpro.renderer.layers.backgroundDrawn) { | |
fn(); | |
} | |
} | |
} | |
waitForInitialized(function() { | |
var stdDraw = tagpro.tiles.draw; | |
// ids of the tiles we're interested in changing. | |
var floorTiles = [2, 11, 12, 17, 18]; | |
var prefix = "__tinted__"; | |
/** | |
* Set tint of a given canvas element. | |
* @param {HTMLElement} image - Canvas element holding the image to tint. | |
* @param {string} [color="#000000"] - Color string to tint the tiles, like "#FF0000". | |
* @param {number} [opacity="0.01"] - How much to preserve the original image. | |
*/ | |
var setTint = function(image, color, opacity) { | |
// Adapted from: http://stackoverflow.com/a/4231508/1698058 | |
var tint = document.createElement("canvas"); | |
tint.width = image.width; | |
tint.height = image.height; | |
var tintCtx = tint.getContext("2d"); | |
tintCtx.fillStyle = color || "#000000"; | |
tintCtx.fillRect(0, 0, tint.width, tint.height); | |
tintCtx.globalCompositeOperation = "destination-atop"; | |
tintCtx.drawImage(image, 0, 0); | |
var imageCtx = image.getContext("2d"); | |
imageCtx.globalAlpha = opacity || 0.01; | |
imageCtx.drawImage(tint, 0, 0); | |
} | |
/** | |
* Creates the tinted texture for the tile of the given id and sets | |
* the relevant values such that the returned value will function in | |
* the original `tagpro.tiles.draw` function. | |
* @param {(number|string)} tileId - The original id of the tile to set information for. | |
* @return {string} - The new id to use for the tile. | |
*/ | |
var setTintedTexture = function(tileId) { | |
var originalTileId = tileId; | |
tileId = prefix + originalTileId; | |
if (!tagpro.tiles[tileId] || !PIXI.TextureCache[tileId]) { | |
var tile = tagpro.tiles[originalTileId]; | |
tagpro.tiles[tileId] = tile; | |
var spread = tile.spread || 0; | |
var elt = document.createElement("canvas"); | |
elt.width = tile.size || 40; | |
elt.height = tile.size || 40; | |
var ctx = elt.getContext("2d"); | |
var sx = tile.x * 40 - spread; | |
var sy = tile.y * 40 - spread; | |
var size = (tile.size || 40) + spread * 2; | |
ctx.drawImage(tagpro.tiles.image, sx, sy, size, size, 0, 0, size, size); | |
setTint(elt, TINT_COLOR, OPACITY); | |
PIXI.TextureCache[tileId] = PIXI.Texture.fromCanvas(elt); | |
} | |
return tileId; | |
} | |
// Override `tagpro.tiles.draw`. | |
tagpro.tiles.draw = function() { | |
// Only make changes when drawing background tiles. | |
if (tagpro.tiles.draw.caller === tagpro.tiles.drawLayers) { | |
var loc = arguments[2]; | |
var floorTile = floorTiles.indexOf(arguments[1]) !== -1; | |
if (loc && !(typeof arguments[1] == "object") && floorTile) { | |
var arrayLoc = { | |
x: Math.floor(loc.x / 40), | |
y: Math.floor(loc.y / 40) | |
}; | |
if ((arrayLoc.x % 2 == 0 && arrayLoc.y % 2 == 0) || | |
(arrayLoc.x % 2 == 1 && arrayLoc.y % 2 == 1)) { | |
arguments[1] = setTintedTexture(arguments[1]); | |
} | |
} | |
} | |
return stdDraw.apply(null, arguments); | |
} | |
}); |
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