Add filled cauldron nodes

mods/ITEMS/mcl_cauldrons/init.lua

@@ -1,19 +1,27 @@
-minetest.register_node("mcl_cauldrons:cauldron", {
+-- Cauldron mod, adds cauldrons.
-	description = "Cauldron",
+
-	wield_image = "mcl_cauldrons_cauldron.png",
+-- TODO: Extinguish fire of burning entities
-	inventory_image = "mcl_cauldrons_cauldron.png",
+
-	drawtype = "nodebox",
+-- Convenience function because the cauldron nodeboxes are very similar
-	paramtype = "light",
+local create_cauldron_nodebox = function(water_level)
-	sunlight_propagates = true,
+	local floor_y
-	groups = {pickaxey=1},
+	if water_level == 0 then	-- empty
-	node_box = {
+		floor_y = -0.1875
+	elseif water_level == 1 then	-- 1/3 filled
+		floor_y = 1/16
+	elseif water_level == 2 then	-- 2/3 filled
+		floor_y = 4/16
+	elseif water_level == 3 then	-- full
+		floor_y = 7/16
+	end
+	return {
 		type = "fixed",
 		fixed = {
 			{-0.5, -0.1875, -0.5, -0.375, 0.5, 0.5}, -- Left wall
 			{0.375, -0.1875, -0.5, 0.5, 0.5, 0.5}, -- Right wall
 			{-0.375, -0.1875, 0.375, 0.375, 0.5, 0.5}, -- Back wall
 			{-0.375, -0.1875, -0.5, 0.375, 0.5, -0.375}, -- Front wall
-			{-0.5, -0.3125, -0.5, 0.5, -0.1875, 0.5}, -- Floor
+			{-0.5, -0.3125, -0.5, 0.5, floor_y, 0.5}, -- Floor
 			{-0.5, -0.5, -0.5, -0.375, -0.3125, -0.25}, -- Left front foot, part 1
 			{-0.375, -0.5, -0.5, -0.25, -0.3125, -0.375}, -- Left front foot, part 2
 			{-0.5, -0.5, 0.25, -0.375, -0.3125, 0.5}, -- Left back foot, part 1
@@ -23,7 +31,25 @@ minetest.register_node("mcl_cauldrons:cauldron", {
 			{0.375, -0.5, -0.5, 0.5, -0.3125, -0.25}, -- Right front foot, part 1
 			{0.25, -0.5, -0.5, 0.375, -0.3125, -0.375}, -- Right front foot, part 2
 		}
-	},
+	}
+end
+
+local cauldron_nodeboxes = {}
+for w=0,3 do
+	cauldron_nodeboxes[w] = create_cauldron_nodebox(w)
+end
+
+
+-- Empty cauldron
+minetest.register_node("mcl_cauldrons:cauldron", {
+	description = "Cauldron",
+	wield_image = "mcl_cauldrons_cauldron.png",
+	inventory_image = "mcl_cauldrons_cauldron.png",
+	drawtype = "nodebox",
+	paramtype = "light",
+	sunlight_propagates = true,
+	groups = {pickaxey=1, deco_block=1},
+	node_box = cauldron_nodeboxes[0],
 	selection_box = { type = "regular" },
 	tiles = {
 		"mcl_cauldrons_cauldron_inner.png^mcl_cauldrons_cauldron_top.png",
@@ -35,6 +61,33 @@ minetest.register_node("mcl_cauldrons:cauldron", {
 	_mcl_blast_resistance = 10,
 })
 
+-- Template function for cauldrons with water
+local register_filled_cauldron = function(water_level, description)
+	minetest.register_node("mcl_cauldrons:cauldron_"..water_level, {
+		description = description,
+		drawtype = "nodebox",
+		paramtype = "light",
+		sunlight_propagates = true,
+		groups = {pickaxey=1, not_in_creative_inventory=1},
+		node_box = cauldron_nodeboxes[water_level],
+		collision_box = cauldron_nodeboxes[0],
+		selection_box = { type = "regular" },
+		tiles = {
+			"default_water.png^mcl_cauldrons_cauldron_top.png",
+			"mcl_cauldrons_cauldron_inner.png^mcl_cauldrons_cauldron_bottom.png",
+			"mcl_cauldrons_cauldron_side.png"
+		},
+		sounds = mcl_sounds.node_sound_metal_defaults(),
+		_mcl_hardness = 2,
+		_mcl_blast_resistance = 10,
+	})
+end
+
+-- Filled crauldrons (3 levels)
+register_filled_cauldron(1, "Cauldron (One Third Full")
+register_filled_cauldron(2, "Cauldron (Two Thirds Full")
+register_filled_cauldron(3, "Cauldron (Full")
+
 minetest.register_craft({
 	output = "mcl_cauldrons:cauldron",
 	recipe = {