Level Proto Done, Pool done

Assets/Scripts/Helpers.cs

@@ -12,4 +12,9 @@ public class Range{
     public float GetRandom(){
         return Random.Range(min,max);
     }
+
+    public override string ToString()
+    {
+        return $"min:{min}, max:{max}";
+    }
 }

Assets/Scripts/LevelGeneratorV2.cs

@@ -8,7 +8,7 @@ public class LevelGeneratorV2 : MonoBehaviour
     public LineRenderer debugLine;
     [SerializeField]public Range amplitude = new Range(1,2);
     [SerializeField]public Range distance = new Range(2,5);
-    [SerializeField]public Range height = new Range(3,6);
+    [SerializeField]public Range[] heights;
 
     public float frequency = 0.1f;
 
@@ -18,6 +18,15 @@ public class LevelGeneratorV2 : MonoBehaviour
     List<SpriteShapeController> pooled,borrowed = new List<SpriteShapeController>();
     public float tangentSmoothness = 1.5f;
 
+    float space =0;
+
+    [Header("Asteroids")]
+    public float asteroidGenerationHeightThreshold =6;
+    public GameObject[] asteroidPrefabs;
+    public Range asteroidScale = new Range(1,5);
+    public Range asteroidSpeed = new Range(0.1f,0.5f);
+    public Range asteroidTorque = new Range(0.1f,0.5f);
+    public Range asteroidsPerBlock = new Range(4,8);
 
 
     // Start is called before the first frame update
@@ -32,35 +41,56 @@ public class LevelGeneratorV2 : MonoBehaviour
         pooled = new List<SpriteShapeController>();
         borrowed = new List<SpriteShapeController>();
         foreach(SpriteShapeController shape in shapes){pooled.Add(shape);}
-        GenerateNext(amount:100);
+        GenerateNext();
     }
 
     // Update is called once per frame
     void Update()
     {
-        if(PlayerController.position.x > lastStart){
+        if(PlayerController.position.x > lastStart + 50){
             GenerateNext();
+            Debug.Log("Generating Next");
         }
     }
 
     float lastStart;
     List<Vector3> points = new List<Vector3>();
     float a;
-    
-    void GenerateNext(int amount = 100){
+    public float heightSmoothness = 0.1f;
+    void GenerateNext(int amount = 50){
+        Range height = heights[Random.Range(0,heights.Length)];
+        Debug.Log(height);
+        if(space <= 0){space = height.GetRandom();}
+
+        space = Mathf.Lerp(space, height.GetRandom(), heightSmoothness);
         if(points.Count <= 0){points.Add(new Vector3(0,0));}
         int startIndex = points.Count-1;
         lastStart = points[startIndex].x;
+
+        int asteroids = 1;
+        int asteroidsLimit = (int)asteroidsPerBlock.GetRandom();
         for(int i=0; i < amount; i++){
             a+= frequency;
             float y = Mathf.Sin(a) * amplitude.GetRandom();
             float x = points[points.Count-1].x + distance.GetRandom();
 
             points.Add(new Vector3(x,y));
+
+            if(asteroids < Mathf.CeilToInt(i / (amount/(float)asteroidsLimit)) && height.max > asteroidGenerationHeightThreshold){
+                // Rigidbody2D rb = Instantiate(asteroidPrefabs[Random.Range(0,asteroidPrefabs.Length)], new Vector3(x,y),Quaternion.identity).GetComponent<Rigidbody2D>();
+                Rigidbody2D rb = ObjectPool.Spawn(asteroidPrefabs[Random.Range(0,asteroidPrefabs.Length)], new Vector3(x,y)).GetComponent<Rigidbody2D>();
+                borrowedAsteroids.Add(rb.gameObject);
+                rb.AddForce(new Vector2(asteroidSpeed.GetRandom(), asteroidSpeed.GetRandom()));
+                rb.AddTorque(asteroidTorque.GetRandom());
+                rb.transform.localScale = rb.transform.localScale * asteroidScale.GetRandom();
+                asteroids++;
+            }
         }
 
+
         CleanupBorrowed();
 
+        //Bottom Terrain
         SpriteShapeController bot_controller = pooled[0];
         borrowed.Add(pooled[0]);
         pooled.RemoveAt(0);
@@ -68,23 +98,27 @@ public class LevelGeneratorV2 : MonoBehaviour
         bot_controller.spline.Clear();
         InsertNewPoint(bot_controller, points[startIndex]- new Vector3(0, 50));
         for(int i=startIndex; i < points.Count; i++){
-            InsertNewPoint(bot_controller, points[i] - new Vector3(0, height.GetRandom()));
+            InsertNewPoint(bot_controller, points[i] - new Vector3(0, space));
         }
         InsertNewPoint(bot_controller, points[points.Count-1] - new Vector3(0,50));
+        bot_controller.GetComponent<PolygonCollider2D>().enabled=true;
         bot_controller.transform.position = Vector3.zero;
         bot_controller.gameObject.SetActive(false);
         bot_controller.gameObject.SetActive(true);
 
+        //Top Terrain
         SpriteShapeController top_controller = pooled[0];
+
         borrowed.Add(pooled[0]);
         pooled.RemoveAt(0);
 
         top_controller.spline.Clear();
         InsertNewPoint(top_controller, points[startIndex]+ new Vector3(0, 50));
         for(int i=startIndex; i < points.Count; i++){
-            InsertNewPoint(top_controller, points[i] + new Vector3(0, height.GetRandom()));
+            InsertNewPoint(top_controller, points[i] + new Vector3(0, space));
         }
         InsertNewPoint(top_controller, points[points.Count-1] + new Vector3(0,50));
+        top_controller.GetComponent<PolygonCollider2D>().enabled=true;
         top_controller.transform.position = Vector3.zero;
         top_controller.gameObject.SetActive(false);
         top_controller.gameObject.SetActive(true);
@@ -92,13 +126,21 @@ public class LevelGeneratorV2 : MonoBehaviour
         UpdateLine();
     }
 
+    public List<GameObject> borrowedAsteroids = new List<GameObject>();
     void CleanupBorrowed(){
         for(int i= borrowed.Count-1; i > 0; i--){
             if(borrowed[i].spline.GetPosition(borrowed[i].spline.GetPointCount()-1).x < PlayerController.position.x -30){
                 pooled.Add(borrowed[i]);
+                borrowed[i].GetComponent<PolygonCollider2D>().enabled = false;
                 borrowed.RemoveAt(i);
             }
         }
+        for(int i=borrowedAsteroids.Count-1; i> 0; i--){
+            if(borrowedAsteroids[i].transform.position.x + 20 < PlayerController.position.x){
+                ObjectPool.Despawn(borrowedAsteroids[i]);
+                borrowedAsteroids.RemoveAt(i);
+            }
+        }
     }
 
     void UpdateLine(){

Assets/Scripts/ObjectPool.cs

@@ -0,0 +1,48 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class ObjectPool : MonoBehaviour
+{
+    public static ObjectPool instance;
+    public static Dictionary<string, List<GameObject>> pool = new Dictionary<string, List<GameObject>>();
+
+    void Awake(){
+        pool = new Dictionary<string, List<GameObject>>();
+        instance= this;
+    }
+
+    public static GameObject Spawn(GameObject obj, Vector3 position){
+        if(pool.ContainsKey(obj.name)){
+            // Debug.Log($"Has key : {pool[obj.name].Count}");
+            //use from pool
+            if(pool[obj.name].Count <=0){
+                GameObject go = Instantiate(obj, position, Quaternion.identity);
+                return go;
+            }else{
+                GameObject chosen = pool[obj.name][0].gameObject;
+                chosen.gameObject.SetActive(true);
+                chosen.transform.position = position;
+                pool[obj.name].RemoveAt(0);
+                // Debug.Log("Reusing");
+                return chosen;
+            }
+        }else{
+            GameObject go = Instantiate(obj, position, Quaternion.identity);
+            return go;
+        }
+    }
+
+    public static void Despawn(GameObject obj){
+        string objName = obj.name.Replace("(Clone)","");
+        if(!pool.ContainsKey(objName)){
+         pool.Add(objName, new List<GameObject>());
+        }
+
+        pool[objName].Add(obj);
+
+        obj.SetActive(false);
+
+        // Debug.Log($"Adding {objName} back to pool, " + pool[objName].Count);
+    } 
+}

Assets/Scripts/ObjectPool.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: d98f34a73480bb4739a3c4e7e95afc19
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/PlayerController.cs

@@ -27,9 +27,14 @@ public class PlayerController : MonoBehaviour
         
     }
 
+    // float t2=0;
     // Update is called once per frame
     void FixedUpdate()
     {
+        // if(t2 < 1){
+        //     t2+=Time.deltaTime;
+        //     return;
+        // }
         transform.Translate(new Vector3(movingSpeed,0), Space.World);
 
         input = Mathf.Lerp(input, dif / inputRange, inputSmoothness);
@@ -37,7 +42,7 @@ public class PlayerController : MonoBehaviour
         transform.Translate(new Vector3(0,input * verticalSpeed), Space.World);
         transform.localEulerAngles = new Vector3(0,0,input * rotationRange);
 
-        txtScore.text = transform.position.x.ToString("n0");
+        txtScore.text = (transform.position.x < 0) ? "" : transform.position.x.ToString("n0");
 
         movingSpeed += speedIncremental * Time.deltaTime;
 

Assets/Sprites/Kawaii UFO Sprite - Blank.png.meta

@@ -0,0 +1,135 @@
+fileFormatVersion: 2
+guid: 0c4f87b7a900b34fdaf422ecb711ddcf
+TextureImporter:
+  internalIDToNameTable: []
+  externalObjects: {}
+  serializedVersion: 12
+  mipmaps:
+    mipMapMode: 0
+    enableMipMap: 0
+    sRGBTexture: 1
+    linearTexture: 0
+    fadeOut: 0
+    borderMipMap: 0
+    mipMapsPreserveCoverage: 0
+    alphaTestReferenceValue: 0.5
+    mipMapFadeDistanceStart: 1
+    mipMapFadeDistanceEnd: 3
+  bumpmap:
+    convertToNormalMap: 0
+    externalNormalMap: 0
+    heightScale: 0.25
+    normalMapFilter: 0
+  isReadable: 0
+  streamingMipmaps: 0
+  streamingMipmapsPriority: 0
+  vTOnly: 0
+  ignoreMasterTextureLimit: 0
+  grayScaleToAlpha: 0
+  generateCubemap: 6
+  cubemapConvolution: 0
+  seamlessCubemap: 0
+  textureFormat: 1
+  maxTextureSize: 2048
+  textureSettings:
+    serializedVersion: 2
+    filterMode: 1
+    aniso: 1
+    mipBias: 0
+    wrapU: 1
+    wrapV: 1
+    wrapW: 1
+  nPOTScale: 0
+  lightmap: 0
+  compressionQuality: 50
+  spriteMode: 1
+  spriteExtrude: 1
+  spriteMeshType: 1
+  alignment: 0
+  spritePivot: {x: 0.5, y: 0.5}
+  spritePixelsToUnits: 100
+  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
+  spriteGenerateFallbackPhysicsShape: 1
+  alphaUsage: 1
+  alphaIsTransparency: 1
+  spriteTessellationDetail: -1
+  textureType: 8
+  textureShape: 1
+  singleChannelComponent: 0
+  flipbookRows: 1
+  flipbookColumns: 1
+  maxTextureSizeSet: 0
+  compressionQualitySet: 0
+  textureFormatSet: 0
+  ignorePngGamma: 0
+  applyGammaDecoding: 0
+  cookieLightType: 0
+  platformSettings:
+  - serializedVersion: 3
+    buildTarget: DefaultTexturePlatform
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Standalone
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Server
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Android
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  spriteSheet:
+    serializedVersion: 2
+    sprites: []
+    outline: []
+    physicsShape: []
+    bones: []
+    spriteID: 5e97eb03825dee720800000000000000
+    internalID: 0
+    vertices: []
+    indices: 
+    edges: []
+    weights: []
+    secondaryTextures: []
+    nameFileIdTable: {}
+  spritePackingTag: 
+  pSDRemoveMatte: 0
+  pSDShowRemoveMatteOption: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Sprites/asteroid_02.png.meta

@@ -0,0 +1,135 @@
+fileFormatVersion: 2
+guid: 34318c68a5559633d985378e20f5b520
+TextureImporter:
+  internalIDToNameTable: []
+  externalObjects: {}
+  serializedVersion: 12
+  mipmaps:
+    mipMapMode: 0
+    enableMipMap: 0
+    sRGBTexture: 1
+    linearTexture: 0
+    fadeOut: 0
+    borderMipMap: 0
+    mipMapsPreserveCoverage: 0
+    alphaTestReferenceValue: 0.5
+    mipMapFadeDistanceStart: 1
+    mipMapFadeDistanceEnd: 3
+  bumpmap:
+    convertToNormalMap: 0
+    externalNormalMap: 0
+    heightScale: 0.25
+    normalMapFilter: 0
+  isReadable: 0
+  streamingMipmaps: 0
+  streamingMipmapsPriority: 0
+  vTOnly: 0
+  ignoreMasterTextureLimit: 0
+  grayScaleToAlpha: 0
+  generateCubemap: 6
+  cubemapConvolution: 0
+  seamlessCubemap: 0
+  textureFormat: 1
+  maxTextureSize: 2048
+  textureSettings:
+    serializedVersion: 2
+    filterMode: 1
+    aniso: 1
+    mipBias: 0
+    wrapU: 1
+    wrapV: 1
+    wrapW: 1
+  nPOTScale: 0
+  lightmap: 0
+  compressionQuality: 50
+  spriteMode: 1
+  spriteExtrude: 1
+  spriteMeshType: 1
+  alignment: 0
+  spritePivot: {x: 0.5, y: 0.5}
+  spritePixelsToUnits: 100
+  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
+  spriteGenerateFallbackPhysicsShape: 1
+  alphaUsage: 1
+  alphaIsTransparency: 1
+  spriteTessellationDetail: -1
+  textureType: 8
+  textureShape: 1
+  singleChannelComponent: 0
+  flipbookRows: 1
+  flipbookColumns: 1
+  maxTextureSizeSet: 0
+  compressionQualitySet: 0
+  textureFormatSet: 0
+  ignorePngGamma: 0
+  applyGammaDecoding: 0
+  cookieLightType: 0
+  platformSettings:
+  - serializedVersion: 3
+    buildTarget: DefaultTexturePlatform
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Standalone
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Server
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Android
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  spriteSheet:
+    serializedVersion: 2
+    sprites: []
+    outline: []
+    physicsShape: []
+    bones: []
+    spriteID: 5e97eb03825dee720800000000000000
+    internalID: 0
+    vertices: []
+    indices: 
+    edges: []
+    weights: []
+    secondaryTextures: []
+    nameFileIdTable: {}
+  spritePackingTag: 
+  pSDRemoveMatte: 0
+  pSDShowRemoveMatteOption: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Sprites/asteroid_03.png.meta

@@ -0,0 +1,135 @@
+fileFormatVersion: 2
+guid: 1060fc4c748557db48a42bfcf3fb9c71
+TextureImporter:
+  internalIDToNameTable: []
+  externalObjects: {}
+  serializedVersion: 12
+  mipmaps:
+    mipMapMode: 0
+    enableMipMap: 0
+    sRGBTexture: 1
+    linearTexture: 0
+    fadeOut: 0
+    borderMipMap: 0
+    mipMapsPreserveCoverage: 0
+    alphaTestReferenceValue: 0.5
+    mipMapFadeDistanceStart: 1
+    mipMapFadeDistanceEnd: 3
+  bumpmap:
+    convertToNormalMap: 0
+    externalNormalMap: 0
+    heightScale: 0.25
+    normalMapFilter: 0
+  isReadable: 0
+  streamingMipmaps: 0
+  streamingMipmapsPriority: 0
+  vTOnly: 0
+  ignoreMasterTextureLimit: 0
+  grayScaleToAlpha: 0
+  generateCubemap: 6
+  cubemapConvolution: 0
+  seamlessCubemap: 0
+  textureFormat: 1
+  maxTextureSize: 2048
+  textureSettings:
+    serializedVersion: 2
+    filterMode: 1
+    aniso: 1
+    mipBias: 0
+    wrapU: 1
+    wrapV: 1
+    wrapW: 1
+  nPOTScale: 0
+  lightmap: 0
+  compressionQuality: 50
+  spriteMode: 1
+  spriteExtrude: 1
+  spriteMeshType: 1
+  alignment: 0
+  spritePivot: {x: 0.5, y: 0.5}
+  spritePixelsToUnits: 100
+  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
+  spriteGenerateFallbackPhysicsShape: 1
+  alphaUsage: 1
+  alphaIsTransparency: 1
+  spriteTessellationDetail: -1
+  textureType: 8
+  textureShape: 1
+  singleChannelComponent: 0
+  flipbookRows: 1
+  flipbookColumns: 1
+  maxTextureSizeSet: 0
+  compressionQualitySet: 0
+  textureFormatSet: 0
+  ignorePngGamma: 0
+  applyGammaDecoding: 0
+  cookieLightType: 0
+  platformSettings:
+  - serializedVersion: 3
+    buildTarget: DefaultTexturePlatform
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Standalone
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Server
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Android
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  spriteSheet:
+    serializedVersion: 2
+    sprites: []
+    outline: []
+    physicsShape: []
+    bones: []
+    spriteID: 5e97eb03825dee720800000000000000
+    internalID: 0
+    vertices: []
+    indices: 
+    edges: []
+    weights: []
+    secondaryTextures: []
+    nameFileIdTable: {}
+  spritePackingTag: 
+  pSDRemoveMatte: 0
+  pSDShowRemoveMatteOption: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Sprites/asteroid_1(1).png.meta

@@ -0,0 +1,135 @@
+fileFormatVersion: 2
+guid: bce168c6cbaba91828db46bf9116fbf3
+TextureImporter:
+  internalIDToNameTable: []
+  externalObjects: {}
+  serializedVersion: 12
+  mipmaps:
+    mipMapMode: 0
+    enableMipMap: 0
+    sRGBTexture: 1
+    linearTexture: 0
+    fadeOut: 0
+    borderMipMap: 0
+    mipMapsPreserveCoverage: 0
+    alphaTestReferenceValue: 0.5
+    mipMapFadeDistanceStart: 1
+    mipMapFadeDistanceEnd: 3
+  bumpmap:
+    convertToNormalMap: 0
+    externalNormalMap: 0
+    heightScale: 0.25
+    normalMapFilter: 0
+  isReadable: 0
+  streamingMipmaps: 0
+  streamingMipmapsPriority: 0
+  vTOnly: 0
+  ignoreMasterTextureLimit: 0
+  grayScaleToAlpha: 0
+  generateCubemap: 6
+  cubemapConvolution: 0
+  seamlessCubemap: 0
+  textureFormat: 1
+  maxTextureSize: 2048
+  textureSettings:
+    serializedVersion: 2
+    filterMode: 1
+    aniso: 1
+    mipBias: 0
+    wrapU: 1
+    wrapV: 1
+    wrapW: 1
+  nPOTScale: 0
+  lightmap: 0
+  compressionQuality: 50
+  spriteMode: 1
+  spriteExtrude: 1
+  spriteMeshType: 1
+  alignment: 0
+  spritePivot: {x: 0.5, y: 0.5}
+  spritePixelsToUnits: 100
+  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
+  spriteGenerateFallbackPhysicsShape: 1
+  alphaUsage: 1
+  alphaIsTransparency: 1
+  spriteTessellationDetail: -1
+  textureType: 8
+  textureShape: 1
+  singleChannelComponent: 0
+  flipbookRows: 1
+  flipbookColumns: 1
+  maxTextureSizeSet: 0
+  compressionQualitySet: 0
+  textureFormatSet: 0
+  ignorePngGamma: 0
+  applyGammaDecoding: 0
+  cookieLightType: 0
+  platformSettings:
+  - serializedVersion: 3
+    buildTarget: DefaultTexturePlatform
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Standalone
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Server
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Android
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
+  spriteSheet:
+    serializedVersion: 2
+    sprites: []
+    outline: []
+    physicsShape: []
+    bones: []
+    spriteID: 5e97eb03825dee720800000000000000
+    internalID: 0
+    vertices: []
+    indices: 
+    edges: []
+    weights: []
+    secondaryTextures: []
+    nameFileIdTable: {}
+  spritePackingTag: 
+  pSDRemoveMatte: 0
+  pSDShowRemoveMatteOption: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/asteroid.physicsMaterial2D

@@ -0,0 +1,11 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!62 &6200000
+PhysicsMaterial2D:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: asteroid
+  friction: 0
+  bounciness: 1

Assets/asteroid.physicsMaterial2D.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 974ddea486cdf95f7aedbce5e6db4edc
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 6200000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: