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path: root/builtin/mainmenu/textures.lua
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--Minetest
--Copyright (C) 2013 sapier
--
--This program is free software; you can redistribute it and/or modify
--it under the terms of the GNU Lesser General Public License as published by
--the Free Software Foundation; either version 2.1 of the License, or
--(at your option) any later version.
--
--This program is distributed in the hope that it will be useful,
--but WITHOUT ANY WARRANTY; without even the implied warranty of
--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--GNU Lesser General Public License for more details.
--
--You should have received a copy of the GNU Lesser General Public License along
--with this program; if not, write to the Free Software Foundation, Inc.,
--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


mm_texture = {}

--------------------------------------------------------------------------------
function mm_texture.init()
	mm_texture.defaulttexturedir = core.get_texturepath() .. DIR_DELIM .. "base" ..
						DIR_DELIM .. "pack" .. DIR_DELIM
	mm_texture.basetexturedir = mm_texture.defaulttexturedir
	
	mm_texture.texturepack = core.setting_get("texture_path")
	
	mm_texture.gameid = nil
end

--------------------------------------------------------------------------------
function mm_texture.update(tab,gamedetails)
	if tab ~= "singleplayer" then
		mm_texture.reset()
		return
	end

	if gamedetails == nil then
		return
	end
	
	mm_texture.update_game(gamedetails)
end

--------------------------------------------------------------------------------
function mm_texture.reset()
	mm_texture.gameid = nil
	local have_bg      = false
	local have_overlay = mm_texture.set_generic("overlay")
	
	if not have_overlay then
		have_bg = mm_texture.set_generic("background")
	end
	
	mm_texture.clear("header")
	mm_texture.clear("footer")
	core.set_clouds(false)
	
	mm_texture.set_generic("footer")
	mm_texture.set_generic("header")
	
	if not have_bg then
		if core.setting_getbool("menu_clouds") then
			core.set_clouds(true)
		else
			mm_texture.set_dirt_bg()
		end
	end
end

--------------------------------------------------------------------------------
function mm_texture.update_game(gamedetails)
	if mm_texture.gameid == gamedetails.id then
		return
	end
	
	local have_bg      = false
	local have_overlay = mm_texture.set_game("overlay",gamedetails)
	
	if not have_overlay then
		have_bg = mm_texture.set_game("background",gamedetails)
	end
	
	mm_texture.clear("header")
	mm_texture.clear("footer")
	core.set_clouds(false)
	
	if not have_bg then
		
		if core.setting_getbool("menu_clouds") then
			core.set_clouds(true)
		else
			mm_texture.set_dirt_bg()
		end
	end
	
	mm_texture.set_game("footer",gamedetails)
	mm_texture.set_game("header",gamedetails)
	
	mm_texture.gameid = gamedetails.id
end

--------------------------------------------------------------------------------
function mm_texture.clear(identifier)
	core.set_background(identifier,"")
end

--------------------------------------------------------------------------------
function mm_texture.set_generic(identifier)
	--try texture pack first
	if mm_texture.texturepack ~= nil then
		local path = mm_texture.texturepack .. DIR_DELIM .."menu_" ..
										identifier .. ".png"
		if core.set_background(identifier,path) then
			return true
		end
	end
	
	if mm_texture.defaulttexturedir ~= nil then
		local path = mm_texture.defaulttexturedir .. DIR_DELIM .."menu_" ..
										identifier .. ".png"
		if core.set_background(identifier,path) then
			return true
		end
	end
	
	return false
end

--------------------------------------------------------------------------------
function mm_texture.set_game(identifier,gamedetails)
	
	if gamedetails == nil then
		return false
	end

	if mm_texture.texturepack ~= nil then
		local path = mm_texture.texturepack .. DIR_DELIM ..
						gamedetails.id .. "_menu_" .. identifier .. ".png"
		if core.set_background(identifier,path) then
			return true
		end
	end
	
	local path = gamedetails.path .. DIR_DELIM .."menu" ..
									 DIR_DELIM .. identifier .. ".png"
	if core.set_background(identifier,path) then
		return true
	end
	
	return false
end

function mm_texture.set_dirt_bg()
	if mm_texture.texturepack ~= nil then
		local path = mm_texture.texturepack .. DIR_DELIM .."default_dirt.png"
		if core.set_background("background", path, true, 128) then
			return true
		end
	end
	
	--use base pack
	local minimalpath = defaulttexturedir .. "dirt_bg.png"
	core.set_background("background", minimalpath, true, 128)
end
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-02 18:26:59 +0000
"hl num">2, y=0}, } local dir_angle_tbl={} for d,v in pairs(dir_trans_tbl) do local uvec = vector.normalize(v) dir_angle_tbl[d] = math.atan2(-uvec.x, uvec.z) end function advtrains.dir_to_angle(dir) return dir_angle_tbl[dir] or error("advtrains: in helpers.lua/dir_to_angle() given dir="..(dir or "nil")) end function advtrains.dirCoordSet(coord, dir) return vector.add(coord, advtrains.dirToCoord(dir)) end advtrains.pos_add_dir = advtrains.dirCoordSet function advtrains.pos_add_angle(pos, ang) -- 0 is +Z -> meaning of sin/cos swapped return vector.add(pos, {x = -math.sin(ang), y = 0, z = math.cos(ang)}) end function advtrains.dirToCoord(dir) return dir_trans_tbl[dir] or error("advtrains: in helpers.lua/dir_to_vector() given dir="..(dir or "nil")) end advtrains.dir_to_vector = advtrains.dirToCoord function advtrains.maxN(list, expectstart) local n=expectstart or 0 while list[n] do n=n+1 end return n-1 end function advtrains.minN(list, expectstart) local n=expectstart or 0 while list[n] do n=n-1 end return n+1 end function atround(number) return math.floor(number+0.5) end atfloor = math.floor function advtrains.round_vector_floor_y(vec) return {x=math.floor(vec.x+0.5), y=math.floor(vec.y), z=math.floor(vec.z+0.5)} end function advtrains.yawToDirection(yaw, conn1, conn2) if not conn1 or not conn2 then error("given nil to yawToDirection: conn1="..(conn1 or "nil").." conn2="..(conn1 or "nil")) end local yaw1 = advtrains.dir_to_angle(conn1) local yaw2 = advtrains.dir_to_angle(conn2) local adiff1 = advtrains.minAngleDiffRad(yaw, yaw1) local adiff2 = advtrains.minAngleDiffRad(yaw, yaw2) if math.abs(adiff2)<math.abs(adiff1) then return conn2 else return conn1 end end function advtrains.yawToAnyDir(yaw) local min_conn, min_diff=0, 10 for conn, vec in pairs(advtrains.dir_trans_tbl) do local yaw1 = advtrains.dir_to_angle(conn) local diff = math.abs(advtrains.minAngleDiffRad(yaw, yaw1)) if diff < min_diff then min_conn = conn min_diff = diff end end return min_conn end function advtrains.yawToClosestConn(yaw, conns) local min_connid, min_diff=1, 10 for connid, conn in ipairs(conns) do local yaw1 = advtrains.dir_to_angle(conn.c) local diff = math.abs(advtrains.minAngleDiffRad(yaw, yaw1)) if diff < min_diff then min_connid = connid min_diff = diff end end return min_connid end local pi, pi2 = math.pi, 2*math.pi function advtrains.minAngleDiffRad(r1, r2) while r1>pi2 do r1=r1-pi2 end while r1<0 do r1=r1+pi2 end while r2>pi2 do r2=r2-pi2 end while r1<0 do r2=r2+pi2 end local try1=r2-r1 local try2=r2+pi2-r1 local try3=r2-pi2-r1 local minabs = math.min(math.abs(try1), math.abs(try2), math.abs(try3)) if minabs==math.abs(try1) then return try1 end if minabs==math.abs(try2) then return try2 end if minabs==math.abs(try3) then return try3 end end -- Takes 2 connections (0...AT_CMAX) as argument -- Returns the angle median of those 2 positions from the pov -- of standing on the cdir1 side and looking towards cdir2 -- cdir1 - >NODE> - cdir2 function advtrains.conn_angle_median(cdir1, cdir2) local ang1 = advtrains.dir_to_angle(advtrains.oppd(cdir1)) local ang2 = advtrains.dir_to_angle(cdir2) return ang1 + advtrains.minAngleDiffRad(ang1, ang2)/2 end function advtrains.merge_tables(a, ...) local new={} for _,t in ipairs({a,...}) do for k,v in pairs(t) do new[k]=v end end return new end function advtrains.save_keys(tbl, keys) local new={} for _,key in ipairs(keys) do new[key] = tbl[key] end return new end function advtrains.get_real_index_position(path, index) if not path or not index then return end local first_pos=path[math.floor(index)] local second_pos=path[math.floor(index)+1] if not first_pos or not second_pos then return nil end local factor=index-math.floor(index) local actual_pos={x=first_pos.x-(first_pos.x-second_pos.x)*factor, y=first_pos.y-(first_pos.y-second_pos.y)*factor, z=first_pos.z-(first_pos.z-second_pos.z)*factor,} return actual_pos end function advtrains.pos_median(pos1, pos2) return {x=pos1.x-(pos1.x-pos2.x)*0.5, y=pos1.y-(pos1.y-pos2.y)*0.5, z=pos1.z-(pos1.z-pos2.z)*0.5} end function advtrains.abs_ceil(i) return math.ceil(math.abs(i))*math.sign(i) end function advtrains.serialize_inventory(inv) local ser={} local liszts=inv:get_lists() for lisztname, liszt in pairs(liszts) do ser[lisztname]={} for idx, item in ipairs(liszt) do local istring=item:to_string() if istring~="" then ser[lisztname][idx]=istring end end end return minetest.serialize(ser) end function advtrains.deserialize_inventory(sers, inv) local ser=minetest.deserialize(sers) if ser then inv:set_lists(ser) return true end return false end --is_protected wrapper that checks for protection_bypass privilege function advtrains.is_protected(pos, name) if not name then error("advtrains.is_protected() called without name parameter!") end if minetest.check_player_privs(name, {protection_bypass=true}) then --player can bypass protection return false end return minetest.is_protected(pos, name) end function advtrains.is_creative(name) if not name then error("advtrains.is_creative() called without name parameter!") end if minetest.check_player_privs(name, {creative=true}) then return true end return minetest.settings:get_bool("creative_mode") end function advtrains.is_damage_enabled(name) if not name then error("advtrains.is_damage_enabled() called without name parameter!") end if minetest.check_player_privs(name, "train_admin") then return false end return minetest.settings:get_bool("enable_damage") end function advtrains.ms_to_kmh(speed) return speed * 3.6 end -- 4 possible inputs: -- integer: just do that modulo calculation -- table with c set: rotate c -- table with tables: rotate each -- table with integers: rotate each (probably no use case) function advtrains.rotate_conn_by(conn, rotate) if tonumber(conn) then return (conn+rotate)%AT_CMAX elseif conn.c then return { c = (conn.c+rotate)%AT_CMAX, y = conn.y} end local tmp={} for connid, data in ipairs(conn) do tmp[connid]=advtrains.rotate_conn_by(data, rotate) end return tmp end function advtrains.oppd(dir) return advtrains.rotate_conn_by(dir, AT_CMAX/2) end --conn_to_match like rotate_conn_by --other_conns have to be a table of conn tables! function advtrains.conn_matches_to(conn, other_conns) if tonumber(conn) then for connid, data in ipairs(other_conns) do if advtrains.oppd(conn) == data.c then return connid end end return false elseif conn.c then for connid, data in ipairs(other_conns) do local cmp = advtrains.oppd(conn) if cmp.c == data.c and (cmp.y or 0) == (data.y or 0) then return connid end end return false end local tmp={} for connid, data in ipairs(conn) do local backmatch = advtrains.conn_matches_to(data, other_conns) if backmatch then return backmatch, connid end --returns <connid of other rail> <connid of this rail> end return false end -- Going from the rail at pos (does not need to be rounded) along connection with id conn_idx, if there is a matching rail, return it and the matching connid -- returns: <adjacent pos>, <conn index of adjacent>, <my conn index>, <railheight of adjacent> -- parameter this_conns_p is connection table of this rail and is optional, is determined by get_rail_info_at if not provided. function advtrains.get_adjacent_rail(this_posnr, this_conns_p, conn_idx, drives_on) local this_pos = advtrains.round_vector_floor_y(this_posnr) local this_conns = this_conns_p if not this_conns then _, this_conns = advtrains.get_rail_info_at(this_pos) end if not conn_idx then for coni, _ in ipairs(this_conns) do local adj_pos, adj_conn_idx, _, nry, nco = advtrains.get_adjacent_rail(this_pos, this_conns, coni) if adj_pos then return adj_pos,adj_conn_idx,coni,nry, nco end end return nil end local conn = this_conns[conn_idx] local conn_y = conn.y or 0 local adj_pos = advtrains.dirCoordSet(this_pos, conn.c); while conn_y>=1 do conn_y = conn_y - 1 adj_pos.y = adj_pos.y + 1 end local nextnode_ok, nextconns, nextrail_y=advtrains.get_rail_info_at(adj_pos, drives_on) if not nextnode_ok then adj_pos.y = adj_pos.y - 1 conn_y = conn_y + 1 nextnode_ok, nextconns, nextrail_y=advtrains.get_rail_info_at(adj_pos, drives_on) if not nextnode_ok then return nil end end local adj_connid = advtrains.conn_matches_to({c=conn.c, y=conn_y}, nextconns) if adj_connid then return adj_pos, adj_connid, conn_idx, nextrail_y, nextconns end return nil end -- when a train enters a rail on connid 'conn', which connid will it go out? -- nconns: number of connections in connection table: -- 2 = straight rail; 3 = turnout, 4 = crossing, 5 = three-way turnout (5th entry is a stub) -- returns: connid_out local connlku={[2]={2,1}, [3]={2,1,1}, [4]={2,1,4,3}, [5]={2,1,1,1}} function advtrains.get_matching_conn(conn, nconns) return connlku[nconns][conn] end function advtrains.random_id() local idst="" for i=0,5 do idst=idst..(math.random(0,9)) end return idst end -- Shorthand for pos_to_string and round_vector_floor_y function advtrains.roundfloorpts(pos) return minetest.pos_to_string(advtrains.round_vector_floor_y(pos)) end -- insert an element into a table if it does not yet exist there -- equalfunc is a function to compare equality, defaults to == -- returns true if the element was inserted function advtrains.insert_once(tab, elem, equalfunc) for _,e in pairs(tab) do if equalfunc and equalfunc(elem, e) or e==elem then return false end end tab[#tab+1] = elem return true end