Added player dash script and physic material 2d.

Assets/Physics.meta

+fileFormatVersion: 2
+guid: 507f9015dd3807547896c3c9d9e8a4e1
+folderAsset: yes
+timeCreated: 1486689690
+licenseType: Free
+DefaultImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Physics/NoBounceNoFric.physicsMaterial2D.meta

+fileFormatVersion: 2
+guid: 120aaee2a73d6364d87bc0095a298b23
+timeCreated: 1486689701
+licenseType: Free
+NativeFormatImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/Birb/Dash.cs

+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+
+// Sets dash velocity and smoothly decelerates to a minimum velocity
+
+public class Dash : AbstractBehavior {
+
+    private float lastDash;
+    public float coolDown = 1f;
+    public float dashforce = 5;
+    public float holdTime = 0.4f;
+    public float minVelocity = 0.5f;
+	
+
+    // Should be called every frame
+    public void DashCheck() {
+        // Button pressed, not in cooldown, and not on wall
+        if (inputState.GetButtonValue(inputButtons[0]) && Time.time > lastDash && !collisionState.onWall) {
+            StartCoroutine(DoDash());
+        }
+    }
+
+    // Dash
+    IEnumerator DoDash() {
+        // Cooldown
+        lastDash = Time.time + coolDown;
+        // Set initial velocity
+        body.velocity = transform.right * dashforce;
+        // Disable gravity
+        float initialGrav = body.gravityScale;
+        body.gravityScale = 0;
+
+        // Decelerate
+        for (float i = 0; i < holdTime; i += Time.deltaTime) {
+            // Calculate velocity
+            Vector2 targetVel = (transform.right * dashforce) * (1 - (i / holdTime));
+
+            if(body.velocity.magnitude < minVelocity || collisionState.onWall) {
+                // Velocity is low enough or collision with wall
+                Debug.Log("Stopped");
+                break;
+            }
+
+            // Apply velocity
+            body.velocity = targetVel;
+            // Wait
+            yield return new WaitForEndOfFrame();
+        }
+
+        // Restore gravity
+        body.gravityScale = initialGrav;
+    }
+}

Assets/Scripts/Birb/Dash.cs.meta

+fileFormatVersion: 2
+guid: f246b93f516db6d4881da268c3588e75
+timeCreated: 1486687030
+licenseType: Free
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

ProjectSettings/ProjectVersion.txt

-m_EditorVersion: 5.5.0xf3Linux
+
+m_EditorVersion: 5.5.0f3
\ No newline at end of file