Map maker: Add support for optionally specifying base node

mods/ctf/ctf_map/README.md

@@ -64,6 +64,7 @@ Each map's metadata is stored in an accompanying .conf file containing the follo
 * `author`: Author of the map.
 * `hint`: [Optional] Helpful hint or tip for unique maps, to help players understand the map.
 * `rotation`: Rotation of the schem. [`x`|`z`]
+* `base_node`: [Optional] Technical name of node to be used for the team base.
 * `schematic`: Name of the map's schematic.
 * `initial_stuff`: [Optional] Comma-separated list of itemstacks to be given to the player
  on join and on respawn.

mods/ctf/ctf_map/base.lua

@@ -3,7 +3,7 @@ function ctf_map.place_base(color, pos)
 	for x = pos.x - 2, pos.x + 2 do
 		for z = pos.z - 2, pos.z + 2 do
 			minetest.set_node({ x = x, y = pos.y - 1, z = z },
-				{name = "ctf_map:ind_cobble"})
+				{ name = ctf_map.map.base_node or "ctf_map:ind_cobble" })
 		end
 	end
 

mods/ctf/ctf_map/schem_map.lua

@@ -100,6 +100,7 @@ local function load_map_meta(idx, path)
 		screenshot    = meta:get("screenshot"),
 		license       = meta:get("license"),
 		others        = meta:get("others"),
+		base_node     = meta:get("base_node"),
 		schematic     = path .. ".mts",
 		initial_stuff = initial_stuff and initial_stuff:split(","),
 		treasures     = treasures,