Fix node breaker, use new minetest.swap_node

deployer.lua

@@ -66,24 +66,20 @@ minetest.register_craft({
 	}
 })
 
-local function hacky_swap_node(pos,name)
+local function swap_node(pos, name)
     local node = minetest.get_node(pos)
-    local meta=minetest.get_meta(pos)
-    local meta0=meta:to_table()
     if node.name == name then
         return
     end
     node.name = name
-    minetest.add_node(pos, node)
+    minetest.swap_node(pos, node)
-    local meta=minetest.get_meta(pos)
-    meta:from_table(meta0)
 end
 
 local function delay(x)
 	return (function() return x end)
 end
 
-local deployer_on = function(pos, node)
+local function deployer_on(pos, node)
 	if node.name ~= "pipeworks:deployer_off" then
 		return
 	end
@@ -92,7 +88,7 @@ local deployer_on = function(pos, node)
 	local dir = minetest.facedir_to_dir(node.param2)
 	local pos_under, pos_above = {x = pos.x - dir.x, y = pos.y - dir.y, z = pos.z - dir.z}, {x = pos.x - 2*dir.x, y = pos.y - 2*dir.y, z = pos.z - 2*dir.z}
 
-	hacky_swap_node(pos,"pipeworks:deployer_on")
+	swap_node(pos, "pipeworks:deployer_on")
 	nodeupdate(pos)
 	
 	local meta = minetest.get_meta(pos)
@@ -163,7 +159,7 @@ end
 
 local deployer_off = function(pos, node)
 	if node.name == "pipeworks:deployer_on" then
-		hacky_swap_node(pos,"pipeworks:deployer_off")
+		swap_node(pos, "pipeworks:deployer_off")
 		nodeupdate(pos)
 	end
 end

node_breaker.lua

@@ -14,17 +14,13 @@ minetest.register_craft({
 	}
 })
 
-local function hacky_swap_node(pos,name)
+local function swap_node(pos, name)
     local node = minetest.get_node(pos)
-    local meta=minetest.get_meta(pos)
-    local meta0=meta:to_table()
     if node.name == name then
         return
     end
     node.name = name
-    minetest.add_node(pos, node)
+    minetest.swap_node(pos, node)
-    local meta=minetest.get_meta(pos)
-    meta:from_table(meta0)
 end
 
 --define the functions from https://github.com/minetest/minetest/pull/834 while waiting for the devs to notice it
@@ -91,7 +87,6 @@ local function break_node (pos, facedir)
 
 	local vel = minetest.facedir_to_dir(facedir);
 	local front = {x=pos.x - vel.x, y=pos.y - vel.y, z=pos.z - vel.z}
-	local back = {x=pos.x + vel.x, y=pos.y + vel.y, z=pos.z + vel.z}
 	
 	local node = minetest.get_node(front)
 	if node.name == "air" or node.name == "ignore" then
@@ -168,6 +163,11 @@ local function break_node (pos, facedir)
 		item1:setacceleration({x=0, y=0, z=0})
 	end
 
+	local oldmetadata = nil
+	if def.after_dig_node then
+		oldmetadata = minetest.get_meta(front):to_table()
+	end
+	
 	minetest.remove_node(front)
 
 	--handle post-digging callback
@@ -189,7 +189,7 @@ end
 
 local node_breaker_on = function(pos, node)
 	if node.name == "pipeworks:nodebreaker_off" then
-		hacky_swap_node(pos,"pipeworks:nodebreaker_on")
+		swap_node(pos, "pipeworks:nodebreaker_on")
 		break_node(pos, node.param2)
 		nodeupdate(pos)
 	end
@@ -197,7 +197,7 @@ end
 
 local node_breaker_off = function(pos, node)
 	if node.name == "pipeworks:nodebreaker_on" then
-		hacky_swap_node(pos,"pipeworks:nodebreaker_off")
+		swap_node(pos, "pipeworks:nodebreaker_off")
 		nodeupdate(pos)
 	end
 end