MapGen: Dungeons: add some bricks, stone & mossy cooble into walls. C…

…loses #1140

mods/lord/World/Generation/buildings/src/dungeons.lua

@@ -1,7 +1,9 @@
 
 local dwarf_tomb = require('dungeons.dwarf_tomb')
+local walls = require('dungeons.walls')
 
 
-minetest.register_on_dungeon_generated(function(minp, maxp, data, area, room_centers)
+minetest.register_on_dungeon_generated(function(minp, maxp, data, area, room_centers, rooms_walls)
 	dwarf_tomb.on_dungeon_generated(minp, maxp, data, area, room_centers)
+	walls.on_dungeon_generated(minp, maxp, data, area, room_centers, rooms_walls)
 end)

mods/lord/World/Generation/buildings/src/dungeons/walls.lua

@@ -0,0 +1,59 @@
+local pairs, math_random, id
+	= pairs, math.random, minetest.get_content_id
+
+
+local c_air   = id("air")
+
+local c_side_wall_blocks = {
+	id("default:cobble"),
+	id("default:mossycobble"),
+	id("default:stone"),
+	id("default:stonebrick"),
+	id("default:stonebrick"),
+}
+local c_wall_blocks = {
+	north = c_side_wall_blocks,
+	south = c_side_wall_blocks,
+	west  = c_side_wall_blocks,
+	east  = c_side_wall_blocks,
+	floor = {
+		id("default:cobble"),
+		id("default:mossycobble"),
+		id("default:mossycobble"),
+		id("default:stonebrick"),
+	},
+	ceiling = {
+		id("default:cobble"),
+		id("default:mossycobble"),
+		id("default:stone"),
+		id("default:stonebrick"),
+	},
+}
+
+--- @param wall_type string    one of "north", "south", "west", "east", "floor", "ceiling"
+--- @param data      table
+--- @param area      VoxelArea
+local function fill_wall(wall_type, start_pos, end_pos, data, area)
+	local wall_blocks = c_wall_blocks[wall_type]
+	for x = start_pos.x, end_pos.x do
+		for y = start_pos.y, end_pos.y do
+			for z = start_pos.z, end_pos.z do
+				if (data[area:index(x, y, z)] ~= c_air) then
+					data[area:index(x, y, z)] = wall_blocks[math_random(#wall_blocks)]
+				end
+			end
+		end
+	end
+end
+
+return {
+	on_dungeon_generated = function(minp, maxp, data, area, room_centers, rooms_walls)
+		for i, room_center in pairs(room_centers) do
+			-- data[area:indexp(room_center)] = id("default:torch")
+
+			for wall_type, wall in pairs(rooms_walls[i]) do
+				fill_wall(wall_type, wall.start_pos, wall.end_pos, data, area)
+			end
+		end
+	end
+}