275 lines
8.8 KiB
Lua
275 lines
8.8 KiB
Lua
--[[
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Late library for Minetest - Library adding temporary effects.
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(c) Pierre-Yves Rollo
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation, either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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--]]
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-- Events
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---------
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local registered_events = {}
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function late.event_register(event, func)
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if type(func) == 'function' then
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registered_events[event] = registered_events[event] or {}
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registered_events[event][#registered_events[event] + 1] = func
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end
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end
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function late.trigger_event(event, ...)
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if registered_events[event] then
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for _, func in ipairs(registered_events[event]) do
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func(...)
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end
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end
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end
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-- Colors
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---------
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local stdcolors = {
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aliceblue = 0xf0f8ff,
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antiquewhite = 0xfaebd7,
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aqua = 0x00ffff,
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aquamarine = 0x7fffd4,
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azure = 0xf0ffff,
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beige = 0xf5f5dc,
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bisque = 0xffe4c4,
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black = 00000000,
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blanchedalmond = 0xffebcd,
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blue = 0x0000ff,
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blueviolet = 0x8a2be2,
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brown = 0xa52a2a,
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burlywood = 0xdeb887,
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cadetblue = 0x5f9ea0,
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chartreuse = 0x7fff00,
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chocolate = 0xd2691e,
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coral = 0xff7f50,
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cornflowerblue = 0x6495ed,
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cornsilk = 0xfff8dc,
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crimson = 0xdc143c,
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cyan = 0x00ffff,
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darkblue = 0x00008b,
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darkcyan = 0x008b8b,
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darkgoldenrod = 0xb8860b,
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darkgray = 0xa9a9a9,
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darkgreen = 0x006400,
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darkgrey = 0xa9a9a9,
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darkkhaki = 0xbdb76b,
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darkmagenta = 0x8b008b,
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darkolivegreen = 0x556b2f,
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darkorange = 0xff8c00,
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darkorchid = 0x9932cc,
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darkred = 0x8b0000,
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darksalmon = 0xe9967a,
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darkseagreen = 0x8fbc8f,
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darkslateblue = 0x483d8b,
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darkslategray = 0x2f4f4f,
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darkslategrey = 0x2f4f4f,
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darkturquoise = 0x00ced1,
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darkviolet = 0x9400d3,
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deeppink = 0xff1493,
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deepskyblue = 0x00bfff,
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dimgray = 0x696969,
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dimgrey = 0x696969,
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dodgerblue = 0x1e90ff,
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firebrick = 0xb22222,
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floralwhite = 0xfffaf0,
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forestgreen = 0x228b22,
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fuchsia = 0xff00ff,
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gainsboro = 0xdcdcdc,
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ghostwhite = 0xf8f8ff,
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gold = 0xffd700,
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goldenrod = 0xdaa520,
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gray = 0x808080,
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green = 0x008000,
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greenyellow = 0xadff2f,
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grey = 0x808080,
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honeydew = 0xf0fff0,
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hotpink = 0xff69b4,
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indianred = 0xcd5c5c,
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indigo = 0x4b0082,
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ivory = 0xfffff0,
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khaki = 0xf0e68c,
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lavender = 0xe6e6fa,
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lavenderblush = 0xfff0f5,
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lawngreen = 0x7cfc00,
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lemonchiffon = 0xfffacd,
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lightblue = 0xadd8e6,
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lightcoral = 0xf08080,
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lightcyan = 0xe0ffff,
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lightgoldenrodyellow = 0xfafad2,
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lightgray = 0xd3d3d3,
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lightgreen = 0x90ee90,
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lightgrey = 0xd3d3d3,
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lightpink = 0xffb6c1,
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lightsalmon = 0xffa07a,
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lightseagreen = 0x20b2aa,
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lightskyblue = 0x87cefa,
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lightslategray = 0x778899,
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lightslategrey = 0x778899,
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lightsteelblue = 0xb0c4de,
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lightyellow = 0xffffe0,
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lime = 0x00ff00,
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limegreen = 0x32cd32,
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linen = 0xfaf0e6,
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magenta = 0xff00ff,
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maroon = 0x800000,
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mediumaquamarine = 0x66cdaa,
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mediumblue = 0x0000cd,
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mediumorchid = 0xba55d3,
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mediumpurple = 0x9370db,
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mediumseagreen = 0x3cb371,
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mediumslateblue = 0x7b68ee,
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mediumspringgreen = 0x00fa9a,
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mediumturquoise = 0x48d1cc,
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mediumvioletred = 0xc71585,
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midnightblue = 0x191970,
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mintcream = 0xf5fffa,
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mistyrose = 0xffe4e1,
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moccasin = 0xffe4b5,
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navajowhite = 0xffdead,
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navy = 0x000080,
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oldlace = 0xfdf5e6,
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olive = 0x808000,
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olivedrab = 0x6b8e23,
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orange = 0xffa500,
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orangered = 0xff4500,
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orchid = 0xda70d6,
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palegoldenrod = 0xeee8aa,
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palegreen = 0x98fb98,
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paleturquoise = 0xafeeee,
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palevioletred = 0xdb7093,
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papayawhip = 0xffefd5,
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peachpuff = 0xffdab9,
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peru = 0xcd853f,
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pink = 0xffc0cb,
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plum = 0xdda0dd,
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powderblue = 0xb0e0e6,
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purple = 0x800080,
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red = 0xff0000,
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rosybrown = 0xbc8f8f,
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royalblue = 0x4169e1,
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saddlebrown = 0x8b4513,
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salmon = 0xfa8072,
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sandybrown = 0xf4a460,
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seagreen = 0x2e8b57,
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seashell = 0xfff5ee,
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sienna = 0xa0522d,
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silver = 0xc0c0c0,
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skyblue = 0x87ceeb,
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slateblue = 0x6a5acd,
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slategray = 0x708090,
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slategrey = 0x708090,
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snow = 0xfffafa,
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springgreen = 0x00ff7f,
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steelblue = 0x4682b4,
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tan = 0xd2b48c,
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teal = 0x008080,
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thistle = 0xd8bfd8,
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tomato = 0xff6347,
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turquoise = 0x40e0d0,
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violet = 0xee82ee,
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wheat = 0xf5deb3,
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white = 0xffffff,
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whitesmoke = 0xf5f5f5,
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yellow = 0xffff00,
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yellowgreen = 0x9acd32,
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}
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--- color_to_table
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-- Converts a colorstring to a {r,g,b,a} table.
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-- @param colorspec Can be a standard color name, a 32 bit integer or a table
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-- @returns A {r,g,b,a} table
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function late.color_to_table(colorspec)
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if type(colorspec) == 'string' then
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if string.sub(colorspec, 1, 1) == "#" then
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if string.len(colorspec) == 4 then
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return {
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r = tonumber("0x"..string.sub(colorspec, 2, 2)),
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g = tonumber("0x"..string.sub(colorspec, 3, 3)),
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b = tonumber("0x"..string.sub(colorspec, 4, 4)),
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a = 0xFF,
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}
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elseif string.len(colorspec) == 5 then
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return {
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r = tonumber("0x"..string.sub(colorspec, 2, 2)),
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g = tonumber("0x"..string.sub(colorspec, 3, 3)),
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b = tonumber("0x"..string.sub(colorspec, 4, 4)),
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a = tonumber("0x"..string.sub(colorspec, 5, 5)),
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}
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elseif string.len(colorspec) == 7 then
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return {
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r = tonumber("0x"..string.sub(colorspec, 2, 3)),
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g = tonumber("0x"..string.sub(colorspec, 4, 5)),
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b = tonumber("0x"..string.sub(colorspec, 6, 7)),
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a = 0xFF,
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}
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elseif string.len(colorspec) == 9 then
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return {
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r = tonumber("0x"..string.sub(colorspec, 2, 3)),
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g = tonumber("0x"..string.sub(colorspec, 4, 5)),
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b = tonumber("0x"..string.sub(colorspec, 6, 7)),
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a = tonumber("0x"..string.sub(colorspec, 8, 9)),
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}
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end
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else
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colorspec = stdcolors[colorspec]
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if colorspec then
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return {
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a = 0xFF,
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r = math.floor(colorspec / 0x10000 % 0x100),
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g = math.floor(colorspec / 0x100 % 0x100),
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b = math.floor(colorspec % 0x100),
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}
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end
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return nil
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end
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end
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if type(colorspec) == 'number' then
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return {
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a = math.floor(colorspec / 0x1000000 % 0x100),
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r = math.floor(colorspec / 0x10000 % 0x100),
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g = math.floor(colorspec / 0x100 % 0x100),
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b = math.floor(colorspec % 0x100),
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}
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end
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if type(colorspec) == 'table' then
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return {
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a = (colorspec.a or 0),
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r = (colorspec.r or 0),
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g = (colorspec.g or 0),
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b = (colorspec.b or 0),
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}
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end
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end
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--- color_to_rgb_texture
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-- Converts a colorspec to a #RRGGBB string ready to use in textures
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-- @param colorspec Can be a standard color name, a 32 bit integer or a table
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-- @returns A "#RRGGBB" string
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function late.color_to_rgb_texture(colorspec)
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local color = late.color_to_table(colorspec)
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return string.format("#%02x%02x%02x", color.r, color.g, color.b)
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end
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function late.color_to_rgba_texture(colorspec)
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local color = late.color_to_table(colorspec)
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return string.format("#%02x%02x%02x%02x", color.r, color.g, color.b, color.a)
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end
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