Difference between revisions of "minetest.on place"

Latest revision as of 16:52, 27 May 2014

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+#REDIRECT [[User:Hybrid_Dog#minetest.on_place]]
-== Syntax ==
-<source>minetest.on_place(nodename, func)</source>
-== Description ==
-This changes on_place of a node after it was defined.<br/>
-It is not implemented into minetest but can be added via mod(s):
-<source>minetest.on_place = minetest.on_place or function(name, func)
-	local previous_on_place = minetest.registered_nodes[name].on_place
-	minetest.override_item(name, {
-		on_place = function(itemstack, placer, pointed_thing)
-			if func(itemstack, placer, pointed_thing) then
-				return previous_on_place(itemstack, placer, pointed_thing)
-			end
-		end
-	})
-end</source>
-=== nodename ===
-The name of the node which should become changed
-=== func ===
-should return true if the node becomes set
-<source>function(itemstack, placer, pointed_thing)</source>
-== Example ==
-<source>minetest.on_place("hydro:growlamp", function(itemstack, placer, pointed_thing)
-	if not pointed_thing then
-		return
-	end
-	local pos = minetest.get_pointed_thing_position(pointed_thing, true)
-	if not pos then
-		return
-	end
-	local nd_above = minetest.get_node({x=pos.x, y=pos.y+1, z=pos.z}).name
-	local nd_above_info = minetest.registered_nodes[nd_above]
-	if nd_above == "air"
-	or nd_above == "hydro:growlamp"
-	or not nd_above_info.walkable
-	or nd_above_info.buildable_to then
-		return
-	end
-	return true
-end)</source>
-[[Category:Methods]]