From 354dc71b1296ab8e21dd4fef5c110f243e5df9c2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Ritzl?= <bjorn.ritzl@gmail.com>
Date: Sat, 3 Aug 2019 15:40:06 +0200
Subject: [PATCH] Don't create a transition for a node if one already exists

Fixes #50
---
 monarch/transitions/gui.lua | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/monarch/transitions/gui.lua b/monarch/transitions/gui.lua
index 9ce569d..bbf6606 100644
--- a/monarch/transitions/gui.lua
+++ b/monarch/transitions/gui.lua
@@ -122,6 +122,19 @@ local function create()
 
 	local function create_transition(transition_id, node, fn, easing, duration, delay)
 		local t = transitions[transition_id]
+		-- find if there's already a transition for the node in
+		-- question and if so update it instead of creating a new
+		-- transition
+		for _,transition in ipairs(t) do
+			if transition.node == node then
+				transition.fn = fn
+				transition.easing = easing
+				transition.duration = duration
+				transitions.delay = delay
+				return
+			end
+		end
+		-- create new transition
 		t.transitions[#t.transitions + 1] = {
 			node = node,
 			node_data = {