From aaddd9e74dbcae2211bd44bf544de08c69bce8e2 Mon Sep 17 00:00:00 2001
From: Anthony Zhang <azhang9@gmail.com>
Date: Tue, 27 Nov 2012 19:34:54 -0500
Subject: [PATCH] Fix a rare piston pushing bug and make piston updating
 faster.

---
 mesecons_pistons/init.lua         | 7 +++----
 mesecons_pistons/pistons_down.lua | 5 ++---
 mesecons_pistons/pistons_up.lua   | 5 ++---
 3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/mesecons_pistons/init.lua b/mesecons_pistons/init.lua
index e6d09de..7dbace8 100644
--- a/mesecons_pistons/init.lua
+++ b/mesecons_pistons/init.lua
@@ -134,7 +134,7 @@ local update = function(pos, node)
 
 	local timer = minetest.env:get_node_timer(pos)
 	timer:stop()
-	timer:set(0.1, 0)
+	timer:start(0)
 end
 mesecon:register_on_signal_on(update) --push action
 mesecon:register_on_signal_off(update) --pull action
@@ -150,14 +150,13 @@ function mesecon:piston_push(pos)
 	while true do
 		local checknode = minetest.env:get_node(checkpos)
 
-		--check for collision with stopper
-		if mesecon:is_mvps_stopper(checknode.name) then 
+		--check for collision with stopper or bounds
+		if mesecon:is_mvps_stopper(checknode.name) or checknode.name == "ignore" then
 			return
 		end
 
 		--check for column end
 		if checknode.name == "air"
-		or checknode.name == "ignore"
 		or not(minetest.registered_nodes[checknode.name].liquidtype == "none") then
 			break
 		end
diff --git a/mesecons_pistons/pistons_down.lua b/mesecons_pistons/pistons_down.lua
index 701f247..fb16c6f 100644
--- a/mesecons_pistons/pistons_down.lua
+++ b/mesecons_pistons/pistons_down.lua
@@ -133,14 +133,13 @@ mesecon:register_on_signal_on(function(pos, node)
 	while true do
 		local checknode = minetest.env:get_node(checkpos)
 
-		--check for collision with stopper
-		if mesecon:is_mvps_stopper(checknode.name) then 
+		--check for collision with stopper or bounds
+		if mesecon:is_mvps_stopper(checknode.name) or checknode.name == "ignore" then
 			return
 		end
 
 		--check for column end
 		if checknode.name == "air"
-		or checknode.name == "ignore"
 		or not(minetest.registered_nodes[checknode.name].liquidtype == "none") then
 			break
 		end
diff --git a/mesecons_pistons/pistons_up.lua b/mesecons_pistons/pistons_up.lua
index d04bdee..cbee277 100644
--- a/mesecons_pistons/pistons_up.lua
+++ b/mesecons_pistons/pistons_up.lua
@@ -121,14 +121,13 @@ mesecon:register_on_signal_on(function(pos, node)
 	while true do
 		local checknode = minetest.env:get_node(checkpos)
 
-		--check for collision with stopper
-		if mesecon:is_mvps_stopper(checknode.name) then 
+		--check for collision with stopper or bounds
+		if mesecon:is_mvps_stopper(checknode.name) or checknode.name == "ignore" then
 			return
 		end
 
 		--check for column end
 		if checknode.name == "air"
-		or checknode.name == "ignore"
 		or not(minetest.registered_nodes[checknode.name].liquidtype == "none") then
 			break
 		end