fisrt commit

node_modules/phaser/plugins/impact/GetVelocity.js

@@ -0,0 +1,50 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+var Clamp = require('../../math/Clamp');
+
+/**
+ * [description]
+ *
+ * @function Phaser.Physics.Impact.GetVelocity
+ * @since 3.0.0
+ *
+ * @param {number} delta - The delta time in ms since the last frame. This is a smoothed and capped value based on the FPS rate.
+ * @param {number} vel - [description]
+ * @param {number} accel - [description]
+ * @param {number} friction - [description]
+ * @param {number} max - [description]
+ *
+ * @return {number} [description]
+ */
+var GetVelocity = function (delta, vel, accel, friction, max)
+{
+    if (accel)
+    {
+        return Clamp(vel + accel * delta, -max, max);
+    }
+    else if (friction)
+    {
+        var frictionDelta = friction * delta;
+        
+        if (vel - frictionDelta > 0)
+        {
+            return vel - frictionDelta;
+        }
+        else if (vel + frictionDelta < 0)
+        {
+            return vel + frictionDelta;
+        }
+        else
+        {
+            return 0;
+        }
+    }
+
+    return Clamp(vel, -max, max);
+};
+
+module.exports = GetVelocity;