Merge remote-tracking branch 'upstream/master'

And optimize textures with optipng

init.lua

@@ -35,7 +35,6 @@ dofile(MP.."/octagon_panes.lua")
 dofile(MP.."/octagon_glass.lua")
 dofile(MP.."/forcefield.lua")
 dofile(MP.."/crafts.lua")
-dofile(MP.."/tiles.lua")
 
 if minetest.get_modpath("letters") then
 	-- register letter nodes
@@ -50,3 +49,5 @@ end
 if minetest.get_modpath("mtt") and mtt.enabled then
 	dofile(MP .. "/mtt.lua")
 end
+
+minetest.log("action", "[scifi_nodes] loaded.")

nodes.json

@@ -14,14 +14,12 @@
     },
     "super_white": {
         "description": "Super Plastic",
-        "colorable": true,
         "light": 11,
         "sounds": "stone",
         "texture_name": "white2"
     },
     "ultra_white": {
         "description": "Ultra Plastic",
-        "colorable": true,
         "light": 14,
         "sounds": "stone",
         "texture_name": "white2"
@@ -124,8 +122,7 @@
         "description": "transparent metal floormesh",
         "texture_name": "mesh",
         "texture_modifier": "^[contrast:10:-50^[makealpha:0,0,0",
-        "drawtype": "glasslike",
-        "sunlight_propagates": true
+        "drawtype": "glasslike"
     },
     "pipe": {
         "description": "wall pipe"

nodes.lua

@@ -520,7 +520,6 @@ for name, def in pairs(nodes) do
 	local node_def = {
 		description = def.description,
 		drawtype = def.drawtype or "normal",
-		sunlight_propagates = def.sunlight_propagates,
 		tiles = tiles,
 		groups = {cracky=1, dig_generic = 3},
 		is_ground_content = false,

tiles.lua

@@ -1,13 +0,0 @@
-for _, color in ipairs({"purple", "greenmetal", "bluemetal", "grey"}) do
-    minetest.register_node("scifi_nodes:" .. color .. "_tile", {
-        description = color .. " tile",
-        groups = {
-            cracky = 1
-        },
-        is_ground_content = false,
-        sounds = scifi_nodes.node_sound_metal_defaults(),
-        paramtype2 = "facedir",
-        use_texture_alpha = "blend",
-        tiles = {"scifi_nodes_" .. color .. ".png^scifi_nodes_truchet_tile.png"}
-    })
-end