Teleport inside plants and vines w/ ender pearl

mods/ITEMS/mcl_throwing/throwable.lua

@@ -169,17 +169,23 @@ local pearl_on_step = function(self, dtime)
 
 	-- Destroy when hitting a solid node
 	if self._lastpos.x~=nil then
+		local walkable = (def and def.walkable)
+
 		-- No teleport for hitting ignore for now. Otherwise the player could get stuck.
 		-- FIXME: This also means the player loses an ender pearl for throwing into unloaded areas
 		if node.name == "ignore" then
 			self.object:remove()
 		-- Activate when hitting a solid node or a plant
-		elseif nn == "mcl_core:vine" or nn == "mcl_core:deadbush" or minetest.get_item_group(nn, "flower") ~= 0 or minetest.get_item_group(nn, "sapling") ~= 0 or minetest.get_item_group(nn, "plant") ~= 0 or minetest.get_item_group(nn, "mushroom") ~= 0 or (def and def.walkable) or not def then
+		elseif walkable or nn == "mcl_core:vine" or nn == "mcl_core:deadbush" or minetest.get_item_group(nn, "flower") ~= 0 or minetest.get_item_group(nn, "sapling") ~= 0 or minetest.get_item_group(nn, "plant") ~= 0 or minetest.get_item_group(nn, "mushroom") ~= 0 or not def then
 			local player = minetest.get_player_by_name(self._thrower)
 			if player then
 				-- Teleport and hurt player
 
-				-- But first determine good teleport position
+				-- First determine good teleport position
+				local dir = {x=0, y=0, z=0}
+
+				if walkable then
+					-- Node is walkable, we have to find a place somewhere outside of that node
 					local v = self.object:getvelocity()
 					v = vector.normalize(v)
 
@@ -198,8 +204,6 @@ local pearl_on_step = function(self, dtime)
 					if ld ~= "z" then v.z = 0 end
 
 					-- Final tweaks to the teleporting pos, based on direction
-				local dir = {x=0, y=0, z=0}
-
 					-- Impact from the side
 					dir.x = v.x * -1
 					dir.z = v.z * -1
@@ -212,6 +216,8 @@ local pearl_on_step = function(self, dtime)
 						-- Standing on top
 						dir.y = 0.5
 					end
+				end
+				-- If node was not walkable, no modification to pos is made.
 
 				-- Final teleportation position
 				local telepos = vector.add(pos, dir)