MVPS: pull objects (#374)

mesecons_movestones/init.lua

@@ -50,7 +50,6 @@ function mesecon.register_movestone(name, def, is_sticky, is_vertical)
 			minetest.get_node_timer(pos):start(timer_interval)
 			return
 		end
-		mesecon.mvps_process_stack(stack)
 		mesecon.mvps_move_objects(frontpos, direction, oldstack)
 
 		-- ### Step 2: Move the movestone ###
@@ -61,9 +60,13 @@ function mesecon.register_movestone(name, def, is_sticky, is_vertical)
 		minetest.get_node_timer(frontpos):start(timer_interval)
 
 		-- ### Step 3: If sticky, pull stack behind ###
-		if is_sticky then
-			local backpos = vector.subtract(pos, direction)
-			mesecon.mvps_pull_all(backpos, direction, max_pull)
+		if not is_sticky then
+			return
+		end
+		local backpos = vector.subtract(pos, direction)
+		success, stack, oldstack = mesecon.mvps_pull_all(backpos, direction, max_pull)
+		if success then
+			mesecon.mvps_move_objects(backpos, vector.multiply(direction, -1), oldstack, -1)
 		end
 	end
 

mesecons_mvps/init.lua

@@ -205,7 +205,7 @@ function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, all_pull_sti
 	return true, nodes, oldstack
 end
 
-function mesecon.mvps_move_objects(pos, dir, nodestack)
+function mesecon.mvps_move_objects(pos, dir, nodestack, movefactor)
 	local objects_to_move = {}
 	local dir_k
 	local dir_l
@@ -216,6 +216,8 @@ function mesecon.mvps_move_objects(pos, dir, nodestack)
 			break
 		end
 	end
+	movefactor = movefactor or 1
+	dir = vector.multiply(dir, movefactor)
 	for id, obj in pairs(minetest.object_refs) do
 		local obj_pos = obj:get_pos()
 		local cbox = obj:get_properties().collisionbox
@@ -229,7 +231,7 @@ function mesecon.mvps_move_objects(pos, dir, nodestack)
 				edge2 = v + 0.51
 			else
 				edge1 = v - 0.5 * dir_l
-				edge2 = v + (#nodestack + 0.5) * dir_l
+				edge2 = v + (#nodestack + 0.5 * movefactor) * dir_l
 				-- Make sure, edge1 is bigger than edge2:
 				if edge1 > edge2 then
 					edge1, edge2 = edge2, edge1

mesecons_pistons/init.lua

@@ -101,10 +101,12 @@ local function piston_off(pos, node)
 	if not pistonspec.sticky then
 		return
 	end
-	local dir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
-	local pullpos = vector.add(pos, vector.multiply(dir, 2))
-	local stack = mesecon.mvps_pull_single(pullpos, vector.multiply(dir, -1), max_pull)
-	mesecon.mvps_process_stack(pos, dir, stack)
+	local dir = minetest.facedir_to_dir(node.param2)
+	local pullpos = vector.add(pos, vector.multiply(dir, -2))
+	local success, stack, oldstack = mesecon.mvps_pull_single(pullpos, dir, max_pull)
+	if success then
+		mesecon.mvps_move_objects(pullpos, vector.multiply(dir, -1), oldstack, -1)
+	end
 end
 
 local orientations = {