advtrains.git - Advtrains mod for minetest.

path: root/advtrains_train_steam/models/advtrains_detailed_steam_engine.b3d

	Commit message (Expand)	Author	Age
*	steam locomotive: Add sounds and improve textures	mbb	2017-12-23
*	Remove zip release files, move mod to root, exclude assets from Makefile (#92)	rubenwardy	2017-09-20

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local tx = {}
setmetatable(tx, {__call = function(_, ...) return tx.base(...) end})

function tx.escape(str)
	return (string.gsub(tostring(str), [[([%^:\])]], [[\%1]]))
end

local function getargs(...)
	return select("#", ...), {...}
end

local function curry(f, x)
	return function(...)
		return f(x, ...)
	end
end

local function xmkmodifier(func)
	return function(self, ...)
		table.insert(self, (func(...)))
		return self
	end
end

local function mkmodifier(fmt, spec)
	return xmkmodifier(function(...)
		local count = select("#", ...)
		local args = {...}
		for k, f in pairs(spec) do
			args[k] = f(args[k])
		end
		return string.format(fmt, unpack(args, 1, count))
	end)
end

-- Texture object
local tx_lib = {}
local tx_mt = {
	__index = tx_lib,
	__tostring = function(self)
		return table.concat(self, "^")
	end,
	__concat = function(a, b)
		return tx.raw(("%s^%s"):format(tostring(a), tostring(b)))
	end,
}

function tx.raw(str)
	return setmetatable({str}, tx_mt)
end
function tx.base(str)
	return tx.raw(tx.escape(str))
end
-- TODO: use [fill when 5.8.0 becomes widely used client-side
function tx.fill(w, h, color)
	return tx"advtrains_hud_bg.png":resize(w, h):colorize(color)
end

-- Most texture modifiers
tx_lib.colorize = xmkmodifier(function(c, a)
	local str = ("[colorize:%s"):format(tx.escape(c))
	if a then
		str = str .. ":" .. a
	end
	return str
end)
tx_lib.multiply = mkmodifier("[multiply:%s", {tx.escape})
tx_lib.resize = mkmodifier("[resize:%dx%d", {})
tx_lib.transform = mkmodifier("[transform%s", {tx.escape})

-- [combine

local combine = {}

function combine:add(x, y, ent)
	table.insert(self.st, ([[%d,%d=%s]]):format(x, y, tx.escape(tostring(ent))))
	return self
end

local combine_mt = {
	__index = combine,
	__tostring = function(self)
		return table.concat(self.st, ":")
	end,
}

function tx.combine(w, h, bg)
	local base = ("[combine:%dx%d"):format(w, h)
	local obj = setmetatable({width = w, height = h, st = {base}}, combine_mt)
	if bg then
		obj:add_fill(0, 0, w, h, bg)
	end
	return obj