Add API to create filled map

This commit is contained in:
Elias Fleckenstein 2021-05-01 17:36:51 +02:00
parent e11185638f
commit 2228b30658

@ -1,3 +1,5 @@
mcl_maps = {}
local S = minetest.get_translator("mcl_maps")
local storage = minetest.get_mod_storage()
local modpath = minetest.get_modpath("mcl_maps")
@ -25,127 +27,122 @@ local loaded_maps = {}
local c_air = minetest.get_content_id("air")
-- Turn empty map into filled map by rightclick
local make_filled_map = function(itemstack, placer, pointed_thing)
local new_map = ItemStack("mcl_maps:filled_map")
if minetest.settings:get_bool("enable_real_maps", true) then
local meta = new_map:get_meta()
local id = storage:get_int("next_id")
storage:set_int("next_id", id + 1)
local texture_file = "mcl_maps_map_texture_" .. id .. ".tga"
local texture_path = map_textures_path .. texture_file
local texture = "[combine:140x140:0,0=mcl_maps_map_background.png:6,6=" .. texture_file
meta:set_int("mcl_maps:id", id)
meta:set_string("mcl_maps:texture", texture)
meta:set_string("mcl_maps:texture_path", texture_path)
tt.reload_itemstack_description(new_map)
creating_maps[texture] = true
local pos = placer:get_pos()
local minp = vector.multiply(vector.floor(vector.divide(pos, 128)), 128)
local maxp = vector.add(minp, vector.new(127, 127, 127))
minetest.emerge_area(minp, maxp, function(blockpos, action, calls_remaining)
if calls_remaining < 1 then
local vm = minetest.get_voxel_manip()
local emin, emax = vm:read_from_map(minp, maxp)
local data = vm:get_data()
local param2data = vm:get_param2_data()
local area = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
local pixels = {}
local last_heightmap
for x = 1, 128 do
local map_x = minp.x - 1 + x
local heightmap = {}
for z = 1, 128 do
local map_z = minp.z - 1 + z
local color
for map_y = maxp.y, minp.y, -1 do
local index = area:index(map_x, map_y, map_z)
local c_id = data[index]
if c_id ~= c_air then
color = color_cache[c_id]
if color == nil then
local nodename = minetest.get_name_from_content_id(c_id)
local def = minetest.registered_nodes[nodename]
if def then
local texture
if def.palette then
texture = def.palette
elseif def.tiles then
texture = def.tiles[1]
if type(texture) == "table" then
texture = texture.name
end
end
if texture then
texture = texture:match("([^=^%^]-([^.]+))$"):split("^")[1]
end
if def.palette then
local palette = palettes[texture]
color = palette and {palette = palette}
else
color = texture_colors[texture]
end
function mcl_maps.create_map(pos)
local itemstack = ItemStack("mcl_maps:filled_map")
local meta = itemstack:get_meta()
local id = storage:get_int("next_id")
storage:set_int("next_id", id + 1)
local texture_file = "mcl_maps_map_texture_" .. id .. ".tga"
local texture_path = map_textures_path .. texture_file
local texture = "[combine:140x140:0,0=mcl_maps_map_background.png:6,6=" .. texture_file
meta:set_int("mcl_maps:id", id)
meta:set_string("mcl_maps:texture", texture)
meta:set_string("mcl_maps:texture_path", texture_path)
tt.reload_itemstack_description(itemstack)
creating_maps[texture] = true
local minp = vector.multiply(vector.floor(vector.divide(pos, 128)), 128)
local maxp = vector.add(minp, vector.new(127, 127, 127))
minetest.emerge_area(minp, maxp, function(blockpos, action, calls_remaining)
if calls_remaining > 0 then
return
end
local vm = minetest.get_voxel_manip()
local emin, emax = vm:read_from_map(minp, maxp)
local data = vm:get_data()
local param2data = vm:get_param2_data()
local area = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
local pixels = {}
local last_heightmap
for x = 1, 128 do
local map_x = minp.x - 1 + x
local heightmap = {}
for z = 1, 128 do
local map_z = minp.z - 1 + z
local color
for map_y = maxp.y, minp.y, -1 do
local index = area:index(map_x, map_y, map_z)
local c_id = data[index]
if c_id ~= c_air then
color = color_cache[c_id]
if color == nil then
local nodename = minetest.get_name_from_content_id(c_id)
local def = minetest.registered_nodes[nodename]
if def then
local texture
if def.palette then
texture = def.palette
elseif def.tiles then
texture = def.tiles[1]
if type(texture) == "table" then
texture = texture.name
end
end
if color and color.palette then
color = color.palette[param2data[index] + 1]
if texture then
texture = texture:match("([^=^%^]-([^.]+))$"):split("^")[1]
end
if def.palette then
local palette = palettes[texture]
color = palette and {palette = palette}
else
color_cache[c_id] = color or false
color = texture_colors[texture]
end
if color and last_heightmap then
local last_height = last_heightmap[z]
if last_height < map_y then
color = {
math.min(255, color[1] + 16),
math.min(255, color[2] + 16),
math.min(255, color[3] + 16),
}
elseif last_height > map_y then
color = {
math.max(0, color[1] - 16),
math.max(0, color[2] - 16),
math.max(0, color[3] - 16),
}
end
end
height = map_y
break
end
end
heightmap[z] = height
pixels[z] = pixels[z] or {}
pixels[z][x] = color or {0, 0, 0}
if color and color.palette then
color = color.palette[param2data[index] + 1]
else
color_cache[c_id] = color or false
end
if color and last_heightmap then
local last_height = last_heightmap[z]
if last_height < map_y then
color = {
math.min(255, color[1] + 16),
math.min(255, color[2] + 16),
math.min(255, color[3] + 16),
}
elseif last_height > map_y then
color = {
math.max(0, color[1] - 16),
math.max(0, color[2] - 16),
math.max(0, color[3] - 16),
}
end
end
height = map_y
break
end
last_heightmap = heightmap
end
tga_encoder.image(pixels):save(texture_path)
creating_maps[texture] = false
heightmap[z] = height
pixels[z] = pixels[z] or {}
pixels[z][x] = color or {0, 0, 0}
end
end)
end
itemstack:take_item()
if itemstack:is_empty() then
return new_map
else
local inv = placer:get_inventory()
if inv:room_for_item("main", new_map) then
inv:add_item("main", new_map)
else
minetest.add_item(placer:get_pos(), new_map)
last_heightmap = heightmap
end
tga_encoder.image(pixels):save(texture_path)
creating_maps[texture] = false
end)
return itemstack
end
-- Turn empty map into filled map by rightclick
local make_filled_map = function(itemstack, placer, pointed_thing)
if minetest.settings:get_bool("enable_real_maps", true) then
local new_map = mcl_maps.create_map(placer:get_pos())
itemstack:take_item()
if itemstack:is_empty() then
return new_map
else
local inv = placer:get_inventory()
if inv:room_for_item("main", new_map) then
inv:add_item("main", new_map)
else
minetest.add_item(placer:get_pos(), new_map)
end
return itemstack
end
return itemstack
end
end