From 6ba007b75e39c068ddd3f79e1221780423ecd26b Mon Sep 17 00:00:00 2001
From: Anton Poltoratskyi <a.poltoratskyi@andersenlab.com>
Date: Mon, 13 Jul 2020 12:33:38 +0300
Subject: [PATCH] Fixed Node's `onTap` method. Previous implementation haven't
 considered copy on write behavior, so it was not possible to register second
 tap hander.

---
 Source/model/scene/Node.swift | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Source/model/scene/Node.swift b/Source/model/scene/Node.swift
index 0f321552..d580d7e9 100644
--- a/Source/model/scene/Node.swift
+++ b/Source/model/scene/Node.swift
@@ -111,11 +111,11 @@ open class Node: Drawable {
 
     @discardableResult public func onTap(tapCount: Int = 1, f: @escaping (TapEvent) -> Void) -> Disposable {
         let handler = ChangeHandler<TapEvent>(f)
-        if var handlers = tapHandlers[tapCount] {
-            handlers.append(handler)
-        } else {
-            tapHandlers[tapCount] = [handler]
-        }
+        
+        var handlers = tapHandlers[tapCount] ?? []
+        handlers.append(handler)
+        
+        tapHandlers[tapCount] = handlers
 
         return Disposable { [weak self, unowned handler]  in
             guard let index = self?.tapHandlers[tapCount]?.firstIndex(of: handler) else {