Fixes for colorwallmounted and colorfacedir nodes

Correct node placement prediction for attached colorwallmounted nodes.
Correct placement direction for colorfacedir and colorwallmounted nodes.
Correct detatch mechanism for attached colorwallmounted nodes.

builtin/game/falling.lua

@@ -134,7 +134,8 @@ end
 function builtin_shared.check_attached_node(p, n)
 	local def = core.registered_nodes[n.name]
 	local d = {x = 0, y = 0, z = 0}
-	if def.paramtype2 == "wallmounted" then
+	if def.paramtype2 == "wallmounted" or
+			def.paramtype2 == "colorwallmounted" then
 		-- The fallback vector here is in case 'wallmounted to dir' is nil due
 		-- to voxelmanip placing a wallmounted node without resetting a
 		-- pre-existing param2 value that is out-of-range for wallmounted.

builtin/game/item.lua

@@ -262,7 +262,8 @@ function core.item_place_node(itemstack, placer, pointed_thing, param2)
 	-- Calculate direction for wall mounted stuff like torches and signs
 	if def.place_param2 ~= nil then
 		newnode.param2 = def.place_param2
-	elseif def.paramtype2 == 'wallmounted' and not param2 then
+	elseif (def.paramtype2 == 'wallmounted' or
+			def.paramtype2 == 'colorwallmounted') and not param2 then
 		local dir = {
 			x = under.x - above.x,
 			y = under.y - above.y,
@@ -270,7 +271,8 @@ function core.item_place_node(itemstack, placer, pointed_thing, param2)
 		}
 		newnode.param2 = core.dir_to_wallmounted(dir)
 	-- Calculate the direction for furnaces and chests and stuff
-	elseif def.paramtype2 == 'facedir' and not param2 then
+	elseif (def.paramtype2 == 'facedir' or
+			def.paramtype2 == 'colorfacedir') and not param2 then
 		local placer_pos = placer:getpos()
 		if placer_pos then
 			local dir = {

src/game.cpp

@@ -884,7 +884,8 @@ bool nodePlacementPrediction(Client &client,
 			};
 			v3s16 pp;
 
-			if (nodedef->get(id).param_type_2 == CPT2_WALLMOUNTED)
+			if (nodedef->get(id).param_type_2 == CPT2_WALLMOUNTED ||
+					nodedef->get(id).param_type_2 == CPT2_COLORED_WALLMOUNTED)
 				pp = p + wallmounted_dirs[param2];
 			else
 				pp = p + v3s16(0, -1, 0);