support for circular saw

partially attends to https://github.com/pandorabox-io/pandorabox.io/issues/491

.luacheckrc

@@ -17,5 +17,5 @@ read_globals = {
 	"dump", "VoxelArea",
 
 	-- Deps
-	"default", "gravity_manager", "bamboo"
+	"default", "gravity_manager", "bamboo", "stairsplus"
 }

marble.lua

@@ -50,4 +50,23 @@ for _, color in ipairs({"red", "blue", "black"}) do
 		y_max          = planet_mars.y_start + planet_mars.y_height,
 		y_min          = planet_mars.y_start,
 	})
+
+	stairsplus:register_all("planet_mars", color .. "marble",  "planet_mars:" .. color .. "marble", {
+	  description = color .. " marble",
+	  tiles = {"planet_mars_" .. color .. "marble.png"},
+	  groups = {cracky=3}
+	})
+
+	stairsplus:register_all("planet_mars", color .. "marble_bricks",  "planet_mars:" .. color .. "marble_bricks", {
+	  description = color .. " marble bricks",
+	  tiles = {"planet_mars_" .. color .. "marble_bricks.png"},
+	  groups = {cracky=3}
+	})
+
+	stairsplus:register_all("planet_mars", color .. "marble_polished",  "planet_mars:" .. color .. "marble_polished", {
+	  description = color .. " marble polished",
+	  tiles = {"planet_mars_" .. color .. "marble_polished.png"},
+	  groups = {cracky=3}
+	})
+
 end

mod.conf

@@ -1,3 +1,3 @@
 name = planet_mars
 depends = default
-optional_depends = vacuum, bedrock, skybox, gravity_manager
+optional_depends = vacuum, bedrock, skybox, gravity_manager, moreblocks