You can now specify easeParams for any custom easing function you wish to use. Fix phaserjs#3826

Author: photonstorm

CHANGELOG.md

@@ -20,6 +20,8 @@
 * `Tween.init` and `Tween.play` have been rewritten so they are not run multiple times when a Tween is paused before playback, or is part of a Timeline. This didn't cause any problems previously, but it was a redundant duplication of calls.
 * `Tween.onLoop` will now be invoked _after_ the `loopDelay` has expired, if any was set.
 * `Tween.onRepeat` will now be invoked _after_ the `repeatDelay` has expired, if any was set.
+* `easeParams` would be ignored for tweens that _didn't_ use a string for the ease function name. Fix #3826 (thanks @SBCGames)
+* You can now specify `easeParams` for any custom easing function you wish to use. Fix #3826 (thanks @SBCGames)
 
 ### New Features
 

src/tweens/builders/GetEaseFunction.js

@@ -19,38 +19,43 @@ var EaseMap = require('../../math/easing/EaseMap');
  */
 var GetEaseFunction = function (ease, easeParams)
 {
+    //  Default ease function
+    var easeFunction = EaseMap.Power0;
+
+    //  Prepare ease function
     if (typeof ease === 'string' && EaseMap.hasOwnProperty(ease))
     {
-        if (easeParams)
-        {
-            var cloneParams = easeParams.slice(0);
-
-            cloneParams.unshift(0);
-
-            return function (v)
-            {
-                cloneParams[0] = v;
-
-                return EaseMap[ease].apply(this, cloneParams);
-            };
-        }
-        else
-        {
-            //  String based look-up
-            return EaseMap[ease];
-        }
+        //  String based look-up
+        easeFunction = EaseMap[ease];
     }
     else if (typeof ease === 'function')
     {
         //  Custom function
-        return ease;
+        easeFunction = ease;
     }
     else if (Array.isArray(ease) && ease.length === 4)
     {
         //  Bezier function (TODO)
     }
 
-    return EaseMap.Power0;
+    //  No custom ease parameters?
+    if (!easeParams)
+    {
+        //  Return ease function
+        return easeFunction;
+    }
+
+    var cloneParams = easeParams.slice(0);
+
+    cloneParams.unshift(0);
+
+    //  Return ease function with custom ease parameters
+    return function (v)
+    {
+        cloneParams[0] = v;
+
+        return easeFunction.apply(this, cloneParams);
+    };
 };
 
 module.exports = GetEaseFunction;