Draw house icons on map

init.lua

@@ -171,6 +171,52 @@ maps.create_map = function(pos, player_name)
 
 		local image = tga_encoder.image(pixels)
 
+		local positions = minetest.find_nodes_in_area(
+			minp,
+			maxp,
+			"group:door"
+		)
+		for _, p in ipairs(positions) do
+			local z = p.z - minp.z + 1
+			local x = p.x - minp.x + 1
+			local draw_house = (
+				z > 1 and
+				z < size - 7 and
+				x > 4 and
+				x < size - 4
+			)
+			if draw_house then
+				local _ = { nil } -- transparent
+				local O = { 8 } -- outline
+				local F = { 9 } -- filling
+				local house = {
+					{ _, _, _, _, _, _, _ },
+					{ _, O, O, O, O, O, _ },
+					{ _, O, F, F, F, O, _ },
+					{ _, O, F, F, F, O, _ },
+					{ _, O, F, F, F, O, _ },
+					{ _, _, O, F, O, _, _ },
+					{ _, _, _, O, _, _, _ },
+					{ _, _, _, _, _, _, _ },
+				}
+				image:blit_icon(
+					house,
+					{
+						x = x - 5,
+						z = z - 1,
+					},
+					{
+						[4] = true,
+						[5] = true,
+						[6] = true,
+						[7] = true,
+						[8] = true,
+						[9] = true,
+					}
+				)
+			end
+		end
+
 		local positions = minetest.find_nodes_in_area_under_air(
 			minp,
 			maxp,