From a78c61332203daee3870aa73c0f05c480b646e66 Mon Sep 17 00:00:00 2001
From: kay27 <kay27@bk.ru>
Date: Mon, 5 Oct 2020 00:27:08 +0400
Subject: [PATCH] Fix slimeblock/piston behavior,
 https://github.com/kay27/MineClone2/issues/4

---
 mods/ITEMS/REDSTONE/mesecons_mvps/init.lua |  8 +++++---
 mods/ITEMS/mcl_core/nodes_misc.lua         | 10 ++++++++++
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/mods/ITEMS/REDSTONE/mesecons_mvps/init.lua b/mods/ITEMS/REDSTONE/mesecons_mvps/init.lua
index 9eaceb88d..20f280a4b 100644
--- a/mods/ITEMS/REDSTONE/mesecons_mvps/init.lua
+++ b/mods/ITEMS/REDSTONE/mesecons_mvps/init.lua
@@ -120,11 +120,13 @@ function mesecon.mvps_get_stack(pos, dir, maximum, all_pull_sticky)
 	while #frontiers > 0 do
 		local np = frontiers[1]
 		local nn = minetest.get_node(np)
-
+		if nn.name == "ignore" then
+			minetest.get_voxel_manip():read_from_map(np, np)
+			nn = minetest.get_node(np)
+		end
 		if not node_replaceable(nn.name) then
-
+			if #nodes >= maximum then return nil end
 			table.insert(nodes, {node = nn, pos = np})
-			if #nodes > maximum then return nil end
 
 			-- add connected nodes to frontiers, connected is a vector list
 			-- the vectors must be absolute positions
diff --git a/mods/ITEMS/mcl_core/nodes_misc.lua b/mods/ITEMS/mcl_core/nodes_misc.lua
index ca97c2aa6..f9ede7718 100644
--- a/mods/ITEMS/mcl_core/nodes_misc.lua
+++ b/mods/ITEMS/mcl_core/nodes_misc.lua
@@ -52,6 +52,16 @@ minetest.register_node("mcl_core:slimeblock", {
 	},
 	_mcl_blast_resistance = 0,
 	_mcl_hardness = 0,
+	mvps_sticky = function (pos, node)
+		local connected = {}
+		if mesecon.rules.alldirs then
+			for _, r in ipairs(mesecon.rules.alldirs) do
+				table.insert(connected, vector.add(pos, r))
+			end
+		end
+		return connected
+	end,
+
 })
 
 minetest.register_node("mcl_core:cobweb", {