Drill and laser: call node-specific on_dig (#556)

This properly digs nodes that have a custom on_dig function specified. For normal nodes, the behaviour is kept the same.

technic/tools/mining_drill.lua

@@ -51,13 +51,15 @@ local function drill_dig_it0 (pos,player)
 		minetest.record_protection_violation(pos, player:get_player_name())
 		return
 	end
-	local node=minetest.get_node(pos)
+	local node = minetest.get_node(pos)
 	if node.name == "air" or node.name == "ignore" then return end
 	if node.name == "default:lava_source" then return end
 	if node.name == "default:lava_flowing" then return end
 	if node.name == "default:water_source" then minetest.remove_node(pos) return end
 	if node.name == "default:water_flowing" then minetest.remove_node(pos) return end
-	minetest.node_dig(pos,node,player)
+	local def = minetest.registered_nodes[node.name]
+	if not def then return end
+	def.on_dig(pos, node, player)
 end
 
 local function drill_dig_it1 (player)

technic/tools/mining_lasers.lua

@@ -46,7 +46,7 @@ local function laser_node(pos, node, player)
 		})
 		return
 	end
-	minetest.node_dig(pos, node, player)
+	def.on_dig(pos, node, player)
 end
 
 local keep_node = {air = true}