diff --git a/core/src/com/trs/game/StaticMath.java b/core/src/com/trs/game/StaticMath.java
index d016ca2..51196d8 100644
--- a/core/src/com/trs/game/StaticMath.java
+++ b/core/src/com/trs/game/StaticMath.java
@@ -63,7 +63,7 @@ public class StaticMath {
 
     public static Polygon[] createCollisionPolygons(Polygon wall){
         Polygon[] collisionPolygons = new Polygon[4];
-
+        
         // first line of polygon
         float[] newVertices = wall.getVertices();
 
@@ -83,7 +83,7 @@ public class StaticMath {
         collisionPolygons[2] = new Polygon(newVertices);
 
         // second line of polygon
-        newVertices = wall.getVertices();
+       newVertices = wall.getVertices();
 
         newVertices[0] = newVertices[2];
         newVertices[1] = newVertices[3] + 1;
@@ -100,6 +100,7 @@ public class StaticMath {
         newVertices[5] = newVertices[7] - 1;
         collisionPolygons[3] = new Polygon(newVertices);
 
+
         return collisionPolygons;
     }
 
diff --git a/core/src/com/trs/game/model/PermWall.java b/core/src/com/trs/game/model/PermWall.java
index 74b48e4..0a71ca8 100644
--- a/core/src/com/trs/game/model/PermWall.java
+++ b/core/src/com/trs/game/model/PermWall.java
@@ -7,10 +7,12 @@ public class PermWall implements Wall {
 
     private double rotation;
     private Polygon polygon;
+    private Polygon[] collisionPolygons;
 
     public PermWall(double rotation, Polygon polygon){
         this.rotation = rotation;
         this.polygon = polygon;
+        collisionPolygons = StaticMath.createCollisionPolygons(polygon);
     }
 
     @Override
@@ -24,6 +26,11 @@ public class PermWall implements Wall {
         return Math.toDegrees(StaticMath.calculateAngle((int) vertices[0], (int) vertices[1], (int) vertices[6], (int) vertices[7]));
     }
 
+    @Override
+    public Polygon[] getCollisionPolygons() {
+        return collisionPolygons;
+    }
+
     public void setRotation(double rotation) {
         this.rotation = rotation;
     }
diff --git a/core/src/com/trs/game/model/Projectile.java b/core/src/com/trs/game/model/Projectile.java
index e3518cd..1ddc079 100644
--- a/core/src/com/trs/game/model/Projectile.java
+++ b/core/src/com/trs/game/model/Projectile.java
@@ -57,10 +57,8 @@ public class Projectile {
     private void collision(Wall wall){
         System.out.println("Collision");
 
-        Polygon[] collisionPolygons = StaticMath.createCollisionPolygons(wall.getPolygon());
-
         double collisionAngle = 0;
-        for(Polygon collision : collisionPolygons){
+        for(Polygon collision : wall.getCollisionPolygons()){
             if(Intersector.overlapConvexPolygons(polygon, collision)){
                 float[] vertices = collision.getVertices();
                 collisionAngle = StaticMath.calculateAngle((int) vertices[0], (int) vertices[1], (int) vertices[6], (int) vertices[7]);
diff --git a/core/src/com/trs/game/model/TempWall.java b/core/src/com/trs/game/model/TempWall.java
index d754b8f..728b6ba 100644
--- a/core/src/com/trs/game/model/TempWall.java
+++ b/core/src/com/trs/game/model/TempWall.java
@@ -9,11 +9,13 @@ public class TempWall implements Wall {
     private double rotation;
     private Polygon polygon;
     private int lifetime;
+    private Polygon[] collisionPolygons;
 
     public TempWall(double rotation, Polygon polygon, int lifetime){
         this.rotation = rotation;
         this.polygon = polygon;
         this.lifetime = lifetime;
+        collisionPolygons = StaticMath.createCollisionPolygons(polygon);
     }
 
     @Override
@@ -27,6 +29,11 @@ public class TempWall implements Wall {
         return Math.toDegrees(StaticMath.calculateAngle((int) vertices[0], (int) vertices[1], (int) vertices[6], (int) vertices[7]));
     }
 
+    @Override
+    public Polygon[] getCollisionPolygons() {
+        return collisionPolygons;
+    }
+
     public void setRotation(double rotation) {
         this.rotation = rotation;
     }
diff --git a/core/src/com/trs/game/model/Wall.java b/core/src/com/trs/game/model/Wall.java
index 4e108e9..0e3a139 100644
--- a/core/src/com/trs/game/model/Wall.java
+++ b/core/src/com/trs/game/model/Wall.java
@@ -6,4 +6,5 @@ public interface Wall {
     public Wall timerStep();
     public Polygon getPolygon();
     public double getRotation();
+    public Polygon[] getCollisionPolygons();
 }