forked from erle/xmaps
1079 lines
23 KiB
Lua
1079 lines
23 KiB
Lua
--[[
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xmaps – Minetest mod that adds map items that show terrain in HUD
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Copyright © 2022 Nils Dagsson Moskopp (erlehmann)
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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 Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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Dieses Programm hat das Ziel, die Medienkompetenz der Leser zu
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steigern. Gelegentlich packe ich sogar einen handfesten Buffer
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Overflow oder eine Format String Vulnerability zwischen die anderen
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Codezeilen und schreibe das auch nicht dran.
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]]--
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-- blit an icon into the image unless its rect overlaps pixels that
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-- have any of the stop_colors, treating a nil pixel as transparent
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function tga_encoder.image:blit_icon(icon, pos, stop_colors)
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local x = pos.x
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local z = pos.z
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local overlap = false
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for i_z = 1,#icon do
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for i_x = 1,#icon[i_z] do
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local color = self.pixels[z + i_z][x + i_x][1]
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if stop_colors[color] then
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overlap = true
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break
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end
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end
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if overlap then
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break
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end
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end
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if overlap then
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return
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end
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for i_z = 1,#icon do
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for i_x = 1,#icon[i_z] do
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local color = icon[i_z][i_x][1]
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if color then
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self.pixels[z + i_z][x + i_x] = { color }
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end
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end
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end
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end
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xmaps = {}
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xmaps.dark = {} -- key: player name; value: is it dark?
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xmaps.huds = {} -- key: player name; value: player huds
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xmaps.maps = {} -- key: player name; value: map texture
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xmaps.mark = {} -- key: player name; value: marker texture
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xmaps.marx = {} -- key: player name; value: marker x offset
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xmaps.mary = {} -- key: player name; value: marker y offset
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xmaps.load = {} -- maps loaded by players
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xmaps.sent = {} -- maps sent to players
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xmaps.work = {} -- maps being created
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local size = 80
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local worldpath = minetest.get_worldpath()
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local textures_dir = worldpath .. "/xmaps/"
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minetest.mkdir(textures_dir)
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xmaps.get_map_filename = function(map_id)
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return "xmaps_map_texture_" .. map_id .. ".tga"
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end
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xmaps.create_map_item = function(pos, properties)
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properties = properties or {}
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local itemstack = ItemStack("xmaps:map")
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local meta = itemstack:get_meta()
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local map_id = tostring(os.time() + math.random())
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meta:set_string("xmaps:id", map_id)
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local minp = vector.multiply(vector.floor(vector.divide(pos, size)), size)
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meta:set_string("xmaps:minp", minetest.pos_to_string(minp))
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local maxp = vector.add(minp, vector.new(size - 1, size - 1, size - 1))
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meta:set_string("xmaps:maxp", minetest.pos_to_string(maxp))
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if properties.draw_x then
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local xpos = vector.round(pos)
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meta:set_string("xmaps:xpos", minetest.pos_to_string(xpos))
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end
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local filename = xmaps.get_map_filename(map_id)
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xmaps.work[map_id] = true
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local emerge_callback = function(
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blockpos,
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action,
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calls_remaining
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)
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if calls_remaining > 0 then
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return
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end
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local pixels = {}
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local colormap = {
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{ 195, 175, 140 }, -- background checkerboard light
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{ 180, 160, 125 }, -- background checkerboard dark
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{ 60, 35, 16 }, -- dark line
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{ 210, 170, 130 }, -- liquid light
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{ 135, 90, 40 }, -- liquid dark
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{ 150, 105, 55 }, -- more liquid
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{ 165, 120, 70 }, -- more liquid
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{ 150, 105, 55 }, -- more liquid
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{ 60, 35, 16 }, -- tree outline
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{ 150, 105, 55 }, -- tree fill
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{ 60, 35, 15 }, -- rail line
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{ 60, 35, 15 }, -- rail line
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}
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for x = 1,size,1 do
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for z = 1,size,1 do
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local color = 0 + ( ( x + z ) % 2 )
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pixels[z] = pixels[z] or {}
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pixels[z][x] = { color }
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end
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end
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local positions = minetest.find_nodes_in_area_under_air(
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minp,
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maxp,
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"group:liquid"
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)
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for _, p in ipairs(positions) do
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if 14 == minetest.get_node_light(p, 0.5) then
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local z = p.z - minp.z + 1
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local x = p.x - minp.x + 1
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pixels[z][x] = { 3 }
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end
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end
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-- draw coastline
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for x = 1,size,1 do
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for z = 1,size,1 do
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if pixels[z][x][1] >= 3 then
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pixels[z][x] = { 3 + ( z % 2 ) } -- stripes
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if pixels[z][x][1] == 4 then
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local color = 4 + ( ( math.floor( x / 7 ) + math.floor( 1.3 * z * z ) ) % 4 )
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pixels[z][x] = { color }
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end
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if z > 1 and pixels[z-1][x][1] < 3 then
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pixels[z-1][x] = { 2 }
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pixels[z][x] = { 4 }
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end
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if z < size and pixels[z+1][x][1] < 3 then
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pixels[z+1][x] = { 2 }
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pixels[z][x] = { 4 }
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end
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if x > 1 and pixels[z][x-1][1] < 3 then
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pixels[z][x-1] = { 2 }
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pixels[z][x] = { 4 }
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end
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if x < size and pixels[z][x+1][1] < 3 then
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pixels[z][x+1] = { 2 }
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pixels[z][x] = { 4 }
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end
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end
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end
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end
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local image = tga_encoder.image(pixels)
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local positions = minetest.find_nodes_in_area_under_air(
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minp,
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maxp,
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"group:rail"
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)
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RAIL = 10
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for _, p in ipairs(positions) do
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local z = p.z - minp.z + 1
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local x = p.x - minp.x + 1
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pixels[z][x] = { RAIL }
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end
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-- thin out diagonal lines
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for z = 1,#pixels do
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for x = 1,#pixels[z] do
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if (
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RAIL == pixels[z][x][1] and
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x < #pixels[z] -1 and
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RAIL == pixels[z][x+1][1] and
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not ( RAIL == pixels[z][x+2][1] )
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) then
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local color = 0 + ( ( x + z + 1 ) % 2 )
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pixels[z][x+1] = { color }
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end
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if (
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RAIL == pixels[z][x][1] and
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z < #pixels - 1 and
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RAIL == pixels[z+1][x][1] and
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not ( RAIL == pixels[z+2][x][1] )
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) then
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local color = 0 + ( ( x + z + 1 ) % 2 )
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pixels[z+1][x] = { color }
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end
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end
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end
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for _, p in ipairs(positions) do
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local z = p.z - minp.z + 1
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local x = p.x - minp.x + 1
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local draw_rail = (
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z > 1 and
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z < size - 1 and
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x > 1 and
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x < size - 1
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)
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if draw_rail then
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local _ = { nil } -- transparent
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local R = { 11 } -- line
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local rail
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local node_sw = minetest.get_node({
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x=p.x - 1,
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y=p.y,
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z=p.z - 1,
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})
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local node_se = minetest.get_node({
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x=p.x - 1,
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y=p.y,
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z=p.z + 1,
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})
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local node_nw = minetest.get_node({
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x=p.x + 1,
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y=p.y,
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z=p.z - 1,
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})
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local node_ne = minetest.get_node({
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x=p.x + 1,
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y=p.y,
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z=p.z + 1,
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})
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if (
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minetest.get_item_group(
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node_sw.name,
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"rail"
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) > 0 or
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minetest.get_item_group(
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node_se.name,
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"rail"
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) > 0 or
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minetest.get_item_group(
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node_nw.name,
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"rail"
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) > 0 or
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minetest.get_item_group(
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node_ne.name,
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"rail"
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) > 0
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) then
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rail = {
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{ R, _, R },
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{ _, R, _ },
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{ R, _, R },
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}
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else
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rail = {
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{ _, R, _ },
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{ R, R, R },
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{ _, R, _ },
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}
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end
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if 0 == ( x + z ) % 4 then
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rail = {}
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end
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assert( rail )
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image:blit_icon(
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rail,
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{
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x = x - 2,
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z = z - 2,
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},
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{
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[4] = true,
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[5] = true,
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[6] = true,
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[7] = true,
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[8] = true,
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[9] = true,
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[11] = true,
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}
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)
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end
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end
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local positions = minetest.find_nodes_in_area(
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minp,
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maxp,
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"group:door"
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)
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for _, p in ipairs(positions) do
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local z = p.z - minp.z + 1
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local x = p.x - minp.x + 1
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local draw_house = (
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z > 1 and
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z < size - 7 and
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x > 4 and
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x < size - 4
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)
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if draw_house then
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local _ = { nil } -- transparent
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local O = { 8 } -- outline
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local F = { 9 } -- filling
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local house = {
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{ _, _, _, _, _, _, _ },
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{ _, O, O, O, O, O, _ },
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{ _, O, F, F, F, O, _ },
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{ _, O, F, F, F, O, _ },
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{ _, O, F, F, F, O, _ },
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{ _, _, O, F, O, _, _ },
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{ _, _, _, O, _, _, _ },
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{ _, _, _, _, _, _, _ },
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}
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image:blit_icon(
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house,
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{
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x = x - 5,
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z = z - 1,
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},
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{
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[4] = true,
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[5] = true,
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[6] = true,
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[7] = true,
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[8] = true,
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[9] = true,
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[10] = true,
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[11] = true,
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}
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)
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end
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end
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local positions = minetest.find_nodes_in_area_under_air(
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minp,
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maxp,
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{
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"group:leaves",
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"default:snow", -- snow-covered leaves
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}
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)
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for _, p in ipairs(positions) do
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local z = p.z - minp.z + 1
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local x = p.x - minp.x + 1
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local node = minetest.get_node({
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x=p.x,
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y=p.y - 4,
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z=p.z,
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})
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local draw_tree = (
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minetest.get_item_group(
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node.name,
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"tree"
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) > 0 ) and (
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z > 1 and
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z < size - 7 and
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x > 4 and
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x < size - 4
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)
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if draw_tree then
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local tree = {}
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local _ = { nil } -- transparent
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local O = { 8 } -- outline
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local F = { 9 } -- filling
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if nil ~= node.name:find("pine") then
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tree = {
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{ _, _, _, _, _, _, _ },
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{ _, _, _, O, _, _, _ },
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{ _, O, O, O, O, O, _ },
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{ _, O, F, F, F, O, _ },
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{ _, _, O, F, O, _, _ },
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{ _, _, O, F, O, _, _ },
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{ _, _, _, O, _, _, _ },
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{ _, _, _, _, _, _, _ },
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}
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else
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tree = {
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{ _, _, _, _, _, _, _ },
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{ _, _, _, O, _, _, _ },
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{ _, _, _, O, _, _, _ },
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{ _, _, O, O, O, _, _ },
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{ _, O, F, F, F, O, _ },
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{ _, O, F, F, F, O, _ },
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{ _, _, O, O, O, _, _ },
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{ _, _, _, _, _, _, _ },
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}
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end
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image:blit_icon(
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tree,
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{
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x = x - 4,
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z = z - 1,
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},
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{
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[4] = true,
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[5] = true,
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[6] = true,
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[7] = true,
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[8] = true,
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[9] = true,
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[10] = true,
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[11] = true,
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}
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)
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end
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end
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local positions = minetest.find_nodes_in_area_under_air(
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minp,
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maxp,
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"group:grass"
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)
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for _, p in ipairs(positions) do
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local z = p.z - minp.z + 1
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local x = p.x - minp.x + 1
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local draw_grass = (
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z > 1 and
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z < size - 4 and
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x > 4 and
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x < size - 4
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)
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if draw_grass then
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local _ = { nil } -- transparent
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local G = { 9 } -- line
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local grass = {
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{ _, _, _, _, _, _, _ },
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{ _, G, _, G, _, G, _ },
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{ _, G, _, G, _, G, _ },
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{ _, _, _, G, _, _, _ },
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{ _, _, _, _, _, _, _ },
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}
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image:blit_icon(
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grass,
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{
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x = x - 5,
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z = z - 1,
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},
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{
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[4] = true,
|
||
[5] = true,
|
||
[6] = true,
|
||
[7] = true,
|
||
[8] = true,
|
||
[9] = true,
|
||
[10] = true,
|
||
[11] = true,
|
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}
|
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)
|
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end
|
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end
|
||
|
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local positions = minetest.find_nodes_in_area_under_air(
|
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minp,
|
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maxp,
|
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"group:flower"
|
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)
|
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for _, p in ipairs(positions) do
|
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local z = p.z - minp.z + 1
|
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local x = p.x - minp.x + 1
|
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local draw_flower = (
|
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z > 1 and
|
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z < size - 3 and
|
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x > 2 and
|
||
x < size - 2
|
||
)
|
||
if draw_flower then
|
||
local _ = { nil } -- transparent
|
||
local F = { 9 } -- line
|
||
local flower = {
|
||
{ _, _, _, },
|
||
{ _, F, _, },
|
||
{ _, F, _, },
|
||
{ _, _, _, },
|
||
}
|
||
image:blit_icon(
|
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flower,
|
||
{
|
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x = x - 2,
|
||
z = z - 1,
|
||
},
|
||
{
|
||
[4] = true,
|
||
[5] = true,
|
||
[6] = true,
|
||
[7] = true,
|
||
[8] = true,
|
||
[9] = true,
|
||
[10] = true,
|
||
[11] = true,
|
||
}
|
||
)
|
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end
|
||
end
|
||
|
||
local filepath = textures_dir .. filename
|
||
image:save(
|
||
filepath,
|
||
{ colormap=colormap }
|
||
)
|
||
xmaps.work[map_id] = false
|
||
end
|
||
|
||
minetest.emerge_area(
|
||
minp,
|
||
maxp,
|
||
emerge_callback
|
||
)
|
||
return itemstack
|
||
end
|
||
|
||
xmaps.load_map = function(map_id)
|
||
assert( nil ~= map_id )
|
||
if (
|
||
"" == map_id or
|
||
xmaps.work[map_id]
|
||
) then
|
||
return
|
||
end
|
||
|
||
local filename = xmaps.get_map_filename(map_id)
|
||
|
||
if not xmaps.sent[map_id] then
|
||
if not minetest.features.dynamic_add_media_table then
|
||
-- minetest.dynamic_add_media() blocks in
|
||
-- Minetest 5.3 and 5.4 until media loads
|
||
minetest.dynamic_add_media(
|
||
textures_dir .. filename,
|
||
function() end
|
||
)
|
||
xmaps.load[map_id] = true
|
||
else
|
||
-- minetest.dynamic_add_media() never blocks
|
||
-- in Minetest 5.5, callback runs after load
|
||
minetest.dynamic_add_media(
|
||
textures_dir .. filename,
|
||
function()
|
||
xmaps.load[map_id] = true
|
||
end
|
||
)
|
||
end
|
||
xmaps.sent[map_id] = true
|
||
end
|
||
|
||
if xmaps.load[map_id] then
|
||
return filename
|
||
end
|
||
end
|
||
|
||
xmaps.encode_map_item_meta = function(input)
|
||
return minetest.encode_base64(
|
||
minetest.compress(
|
||
input,
|
||
"deflate",
|
||
9
|
||
)
|
||
)
|
||
end
|
||
|
||
xmaps.decode_map_item_meta = function(input)
|
||
return minetest.decompress(
|
||
minetest.decode_base64(input),
|
||
"deflate",
|
||
9
|
||
)
|
||
end
|
||
|
||
result_original = "foo\0\01\02\x03\n\rbar"
|
||
result_roundtrip = xmaps.decode_map_item_meta(
|
||
xmaps.encode_map_item_meta(result_original)
|
||
)
|
||
assert(
|
||
result_original == result_roundtrip,
|
||
"xmaps: mismatch between xmaps.encode_map_item_meta() and xmaps.decode_map_item_meta()"
|
||
)
|
||
|
||
xmaps.load_map_item = function(itemstack)
|
||
local meta = itemstack:get_meta()
|
||
local map_id = meta:get_string("xmaps:id")
|
||
|
||
if (
|
||
not map_id or
|
||
"" == map_id or
|
||
xmaps.work[map_id]
|
||
) then
|
||
return
|
||
end
|
||
|
||
local texture_file_name = xmaps.get_map_filename(map_id)
|
||
local texture_file_path = textures_dir .. texture_file_name
|
||
|
||
-- does the texture file exist?
|
||
local texture_file_handle_read = io.open(
|
||
texture_file_path,
|
||
"rb"
|
||
)
|
||
local texture_file_exists = true
|
||
local texture_data_from_file
|
||
if nil == texture_file_handle_read then
|
||
texture_file_exists = false
|
||
else
|
||
texture_data_from_file = texture_file_handle_read:read("*a")
|
||
texture_file_handle_read:close()
|
||
end
|
||
|
||
-- does the texture item meta exist?
|
||
local tga_deflate_base64 = meta:get_string("xmaps:tga_deflate_base64")
|
||
local texture_item_meta_exists = true
|
||
if "" == tga_deflate_base64 then
|
||
texture_item_meta_exists = false
|
||
end
|
||
|
||
if texture_file_exists and nil ~= texture_data_from_file then
|
||
if texture_item_meta_exists then
|
||
-- sanity check: do we have the same textures?
|
||
-- if server-side texture has changed, take it
|
||
if xmaps.decode_map_item_meta(tga_deflate_base64) ~= texture_data_from_file then
|
||
minetest.log(
|
||
"action",
|
||
"xmaps: update item meta from file content for map " .. map_id
|
||
)
|
||
meta:set_string(
|
||
"xmaps:tga_deflate_base64",
|
||
xmaps.encode_map_item_meta(texture_data_from_file)
|
||
)
|
||
end
|
||
else
|
||
-- map items without meta should not exist, so
|
||
-- we now write the file contents to item meta
|
||
minetest.log(
|
||
"action",
|
||
"xmaps: create item meta from file content for map " .. map_id
|
||
)
|
||
meta:set_string(
|
||
"xmaps:tga_deflate_base64",
|
||
xmaps.encode_map_item_meta(texture_data_from_file)
|
||
)
|
||
end
|
||
else
|
||
-- no texture file → could be a world download
|
||
-- so we look for missing texture in item meta
|
||
-- and write that to the map texture file here
|
||
if texture_item_meta_exists then
|
||
minetest.log(
|
||
"action",
|
||
"xmaps: create file content from item meta for map " .. map_id
|
||
)
|
||
assert(
|
||
minetest.safe_file_write(
|
||
texture_file_path,
|
||
xmaps.decode_map_item_meta(tga_deflate_base64)
|
||
)
|
||
)
|
||
else
|
||
minetest.log(
|
||
"error",
|
||
"no data for map " .. map_id
|
||
)
|
||
return
|
||
end
|
||
end
|
||
|
||
local texture = xmaps.load_map(map_id)
|
||
|
||
local meta_xpos = meta:get_string("xmaps:xpos")
|
||
if texture and "" ~= meta_xpos then
|
||
local meta_minp = meta:get_string("xmaps:minp")
|
||
assert( "" ~= meta_minp )
|
||
local minp = minetest.string_to_pos(meta_minp)
|
||
|
||
local meta_maxp = meta:get_string("xmaps:maxp")
|
||
assert( "" ~= meta_maxp )
|
||
local maxp = minetest.string_to_pos(meta_maxp)
|
||
|
||
local xpos = minetest.string_to_pos(meta_xpos)
|
||
local x_x = xpos.x - minp.x - 4
|
||
local x_z = maxp.z - xpos.z - 4
|
||
local x_overlay = "^[combine:" ..
|
||
size .. "x" .. size .. ":" ..
|
||
x_x .. "," .. x_z .. "=xmaps_x.tga"
|
||
texture = texture .. x_overlay
|
||
end
|
||
|
||
return texture, itemstack
|
||
end
|
||
|
||
minetest.register_on_joinplayer(
|
||
function(player)
|
||
local player_name = player:get_player_name()
|
||
local map_def = {
|
||
hud_elem_type = "image",
|
||
text = "blank.png",
|
||
position = { x = 0.15, y = 0.90 },
|
||
alignment = { x = 0, y = -1 },
|
||
offset = { x = 0, y = 0 },
|
||
scale = { x = 4, y = 4 }
|
||
}
|
||
local pos_def = table.copy(map_def)
|
||
xmaps.huds[player_name] = {
|
||
map = player:hud_add(map_def),
|
||
pos = player:hud_add(pos_def),
|
||
}
|
||
end
|
||
)
|
||
|
||
xmaps.show_map_hud = function(player)
|
||
local wield_item = player:get_wielded_item()
|
||
local texture, updated_wield_item = xmaps.load_map_item(wield_item)
|
||
local player_pos = player:get_pos()
|
||
local player_name = player:get_player_name()
|
||
|
||
if not player_pos or not texture then
|
||
if xmaps.maps[player_name] then
|
||
player:hud_change(
|
||
xmaps.huds[player_name].map,
|
||
"text",
|
||
"blank.png"
|
||
)
|
||
player:hud_change(
|
||
xmaps.huds[player_name].pos,
|
||
"text",
|
||
"blank.png"
|
||
)
|
||
xmaps.maps[player_name] = nil
|
||
xmaps.mark[player_name] = nil
|
||
end
|
||
return
|
||
end
|
||
|
||
if (
|
||
texture ~= xmaps.maps[player_name] and
|
||
updated_wield_item
|
||
) then
|
||
player:set_wielded_item(updated_wield_item)
|
||
end
|
||
|
||
local pos = vector.round(player_pos)
|
||
local meta = wield_item:get_meta()
|
||
|
||
local meta_minp = meta:get_string("xmaps:minp")
|
||
assert( "" ~= meta_minp )
|
||
local minp = minetest.string_to_pos(meta_minp)
|
||
|
||
local meta_maxp = meta:get_string("xmaps:maxp")
|
||
assert( "" ~= meta_maxp )
|
||
local maxp = minetest.string_to_pos(meta_maxp)
|
||
|
||
local light_level = minetest.get_node_light(pos) or 0
|
||
local darkness = 255 - (light_level * 17)
|
||
local light_level_overlay = "^[colorize:black:" .. darkness
|
||
if (
|
||
texture ~= xmaps.maps[player_name] or
|
||
darkness ~= xmaps.dark[player_name]
|
||
) then
|
||
player:hud_change(
|
||
xmaps.huds[player_name].map,
|
||
"text",
|
||
texture .. light_level_overlay
|
||
)
|
||
xmaps.maps[player_name] = texture
|
||
end
|
||
|
||
local marker
|
||
local dot_large = "xmaps_dot_large.tga" .. "^[makealpha:1,1,1"
|
||
local dot_small = "xmaps_dot_small.tga" .. "^[makealpha:1,1,1"
|
||
local dot_tiny = "xmaps_dot_tiny.tga" .. "^[makealpha:1,1,1"
|
||
|
||
if pos.x < minp.x then
|
||
if minp.x - pos.x < size * 2 then
|
||
marker = dot_large
|
||
elseif minp.x - pos.x < size * 4 then
|
||
marker = dot_small
|
||
else
|
||
marker = dot_tiny
|
||
end
|
||
pos.x = minp.x
|
||
elseif pos.x > maxp.x then
|
||
if pos.x - maxp.x < size * 2 then
|
||
marker = dot_large
|
||
elseif pos.x - maxp.x < size * 4 then
|
||
marker = dot_small
|
||
else
|
||
marker = dot_tiny
|
||
end
|
||
pos.x = maxp.x
|
||
end
|
||
|
||
-- we never override a smaller marker
|
||
-- yes, this is a literal corner case
|
||
if pos.z < minp.z then
|
||
if (
|
||
minp.z - pos.z < size * 2 and
|
||
marker ~= dot_small and
|
||
marker ~= dot_tiny
|
||
) then
|
||
marker = dot_large
|
||
elseif (
|
||
minp.z - pos.z < size * 4 and
|
||
marker ~= dot_tiny
|
||
) then
|
||
marker = dot_small
|
||
else
|
||
marker = dot_tiny
|
||
end
|
||
pos.z = minp.z
|
||
elseif pos.z > maxp.z then
|
||
if (
|
||
pos.z - maxp.z < size * 2 and
|
||
marker ~= dot_small and
|
||
marker ~= dot_tiny
|
||
) then
|
||
marker = dot_large
|
||
elseif (
|
||
pos.z - maxp.z < size * 4 and
|
||
marker ~= dot_tiny
|
||
) then
|
||
marker = dot_small
|
||
else
|
||
marker = dot_tiny
|
||
end
|
||
pos.z = maxp.z
|
||
end
|
||
|
||
if nil == marker then
|
||
local yaw = (
|
||
math.floor(
|
||
player:get_look_horizontal()
|
||
* 180 / math.pi / 45 + 0.5
|
||
) % 8
|
||
) * 45
|
||
if (
|
||
yaw == 0 or
|
||
yaw == 90 or
|
||
yaw == 180 or
|
||
yaw == 270
|
||
) then
|
||
marker = "xmaps_arrow.tga" ..
|
||
"^[makealpha:1,1,1" ..
|
||
"^[transformR" ..
|
||
yaw
|
||
elseif (
|
||
yaw == 45 or
|
||
yaw == 135 or
|
||
yaw == 225 or
|
||
yaw == 315
|
||
) then
|
||
marker = "xmaps_arrow_diagonal.tga" ..
|
||
"^[makealpha:1,1,1" ..
|
||
"^[transformR" ..
|
||
(yaw - 45)
|
||
end
|
||
end
|
||
|
||
if marker and (
|
||
marker ~= xmaps.mark[player_name] or
|
||
darkness ~= xmaps.dark[player_name]
|
||
) then
|
||
player:hud_change(
|
||
xmaps.huds[player_name].pos,
|
||
"text",
|
||
marker .. light_level_overlay
|
||
)
|
||
xmaps.mark[player_name] = marker
|
||
end
|
||
|
||
local marker_x = (pos.x - minp.x - (size/2)) * 4
|
||
local marker_y = (maxp.z - pos.z - size + 3) * 4
|
||
if (
|
||
marker_x ~= xmaps.marx[player_name] or
|
||
marker_y ~= xmaps.mary[player_name]
|
||
) then
|
||
player:hud_change(
|
||
xmaps.huds[player_name].pos,
|
||
"offset",
|
||
{
|
||
x = marker_x,
|
||
y = marker_y,
|
||
}
|
||
)
|
||
xmaps.marx[player_name] = marker_x
|
||
xmaps.mary[player_name] = marker_y
|
||
end
|
||
|
||
xmaps.dark[player_name] = darkness
|
||
end
|
||
|
||
local time_elapsed = 0
|
||
|
||
minetest.register_globalstep(
|
||
function(dtime)
|
||
time_elapsed = time_elapsed + dtime
|
||
if time_elapsed < ( 1 / 30 ) then
|
||
return -- fps limiter
|
||
end
|
||
local players = minetest.get_connected_players()
|
||
for _, player in pairs(players) do
|
||
xmaps.show_map_hud(player)
|
||
end
|
||
end
|
||
)
|
||
|
||
minetest.register_entity(
|
||
"xmaps:map",
|
||
{
|
||
visual = "upright_sprite",
|
||
visual_size = { x = 1, y = 1 },
|
||
physical = false,
|
||
collide_with_objects = false,
|
||
textures = { "xmaps_map.tga" },
|
||
on_activate = function(self, staticdata)
|
||
if (
|
||
staticdata and
|
||
"" ~= staticdata
|
||
) then
|
||
local data = minetest.deserialize(staticdata)
|
||
if not data then
|
||
return
|
||
end
|
||
|
||
self._wallmounted = data._wallmounted
|
||
assert( self._wallmounted )
|
||
|
||
self._itemstring = data._itemstring
|
||
assert( self._itemstring )
|
||
|
||
local min, max = -8/16, 8/16
|
||
local len = 1/64
|
||
local sbox
|
||
if 2 == self._wallmounted then
|
||
sbox = { -len, min, min, len, max, max }
|
||
elseif 3 == self._wallmounted then
|
||
sbox = { -len, min, min, len, max, max }
|
||
elseif 4 == self._wallmounted then
|
||
sbox = { min, min, -len, max, max, len }
|
||
elseif 5 == self._wallmounted then
|
||
sbox = { min, min, -len, max, max, len }
|
||
end
|
||
assert( sbox )
|
||
|
||
self.object:set_properties({
|
||
selectionbox = sbox,
|
||
textures = { "blank.png" },
|
||
})
|
||
|
||
local yaw = minetest.dir_to_yaw(
|
||
minetest.wallmounted_to_dir(
|
||
self._wallmounted
|
||
)
|
||
)
|
||
self.object:set_yaw(yaw)
|
||
end
|
||
end,
|
||
on_step = function(self)
|
||
if self._texture then
|
||
return
|
||
end
|
||
local itemstack = ItemStack(self._itemstring)
|
||
self._texture, itemstack = xmaps.load_map_item(itemstack)
|
||
self._itemstring = itemstack:to_string()
|
||
self.object:set_properties({
|
||
textures = { self._texture }
|
||
})
|
||
end,
|
||
get_staticdata = function(self)
|
||
return minetest.serialize(
|
||
{
|
||
_wallmounted = self._wallmounted,
|
||
_itemstring = self._itemstring,
|
||
}
|
||
)
|
||
end,
|
||
on_punch = function(self)
|
||
-- TODO: implement protection
|
||
local pos = self.object:get_pos()
|
||
local itemstring = self._itemstring
|
||
if pos and itemstring then
|
||
minetest.add_item(
|
||
pos,
|
||
itemstring
|
||
)
|
||
self.object:remove()
|
||
end
|
||
end
|
||
}
|
||
)
|
||
|
||
minetest.register_craftitem(
|
||
"xmaps:map",
|
||
{
|
||
description = "Map",
|
||
inventory_image = "xmaps_map.tga",
|
||
groups = { not_in_creative_inventory = 1 },
|
||
on_place = function(itemstack, player, pointed_thing)
|
||
if "node" ~= pointed_thing.type then
|
||
return
|
||
end
|
||
|
||
local player_pos = player:get_pos()
|
||
if not player_pos then
|
||
return
|
||
end
|
||
|
||
local node_pos = pointed_thing.under
|
||
|
||
local direction = vector.normalize(
|
||
vector.subtract(
|
||
node_pos,
|
||
player_pos
|
||
)
|
||
)
|
||
local wallmounted = minetest.dir_to_wallmounted(
|
||
direction
|
||
)
|
||
|
||
-- TODO: implement maps on floor or ceiling
|
||
if wallmounted < 2 then
|
||
return
|
||
end
|
||
|
||
direction = minetest.wallmounted_to_dir(
|
||
wallmounted
|
||
)
|
||
local pos = vector.subtract(
|
||
node_pos,
|
||
vector.multiply(
|
||
direction,
|
||
1/2 + 1/256 -- avoid z-fighting
|
||
)
|
||
)
|
||
local itemstring = itemstack:to_string()
|
||
if pos and "" ~= itemstring then
|
||
local staticdata = {
|
||
_wallmounted = wallmounted,
|
||
_itemstring = itemstring,
|
||
}
|
||
local obj = minetest.add_entity(
|
||
pos,
|
||
"xmaps:map",
|
||
minetest.serialize(staticdata)
|
||
)
|
||
if obj then
|
||
-- TODO: creative mode
|
||
itemstack:take_item()
|
||
end
|
||
end
|
||
return itemstack
|
||
end
|
||
}
|
||
)
|
||
|
||
if minetest.registered_items["map:mapping_kit"] then
|
||
minetest.override_item(
|
||
"map:mapping_kit",
|
||
{
|
||
on_place = function(itemstack, player, pointed_thing)
|
||
local pos = pointed_thing.under
|
||
if pos then
|
||
local map = xmaps.create_map_item(
|
||
pos,
|
||
{ draw_x = true }
|
||
)
|
||
return map
|
||
end
|
||
end,
|
||
on_secondary_use = function(itemstack, player, pointed_thing)
|
||
local pos = player:get_pos()
|
||
if pos then
|
||
local map = xmaps.create_map_item(pos)
|
||
return map
|
||
end
|
||
end,
|
||
}
|
||
)
|
||
end
|