Added some shit

core/src/com/throwgame/main/ThrowMath.java

@@ -1,5 +1,7 @@
 package com.throwgame.main;
 
+import com.badlogic.gdx.math.Vector2;
+
 public class ThrowMath {
     private double tanA;
     private double coefficient;
@@ -30,4 +32,12 @@ public class ThrowMath {
             return -1;
         }
     }
+
+    public Vector2 pivotGetNewPos(double alpha, int xPosPivot, int yPosPivot, int radius){
+        Vector2 vector = new Vector2();
+        vector.x = (float) (radius * Math.sin(alpha));
+        vector.y = (float) (radius * Math.cos(alpha));
+
+        return vector;
+    }
 }

core/src/model/Level.java

@@ -5,6 +5,8 @@
  */
 package model;
 
+import com.badlogic.gdx.math.Circle;
+import com.badlogic.gdx.math.Vector2;
 import com.throwgame.main.ThrowMath;
 
 /**
@@ -12,23 +14,57 @@ import com.throwgame.main.ThrowMath;
  * @author Jan
  */
 public class Level {
+    private final double G = 9.81;
+    private final int RADIUS = 5;
 
     private Goal goal;
     private Projectile projectile;
     private ThrowMath math;
+    private double angle;
+    private int xPosPivot;
+    private int yPosPivot;
+    private double angleSpeed;
+    private boolean isReleased;
 
-    public Level(Goal goal, Projectile projectile){
+    public Level(Goal goal, Projectile projectile, int xPosPivot, int yPosPivot){
         this.goal = goal;
         this.projectile = projectile;
         this.math = new ThrowMath();
+        this.isReleased = false;
+
+        this.xPosPivot = xPosPivot;
+        this.yPosPivot = yPosPivot;
+        this.angle = 0;
+        this.angleSpeed = 0;
     }
 
     public void projectileReleased(){
-
+        this.isReleased = true;
+        double v0 = angleSpeed * RADIUS;
+        this.math.initThrow(angle, G, v0, projectile.getyPos());
     }
 
     public void step(){
+        if(this.isReleased){
+            stepAir();
+        }
+        else{
+            stepPivot();
+        }
+    }
+
+    private void stepPivot(){
+        angleSpeed += 0.1;
+        angle += angleSpeed;
+
+        Vector2 newPosVector = math.pivotGetNewPos(this.angle, this.xPosPivot, this.yPosPivot, RADIUS);
+        this.projectile.setxPos((int) newPosVector.x);
+        this.projectile.setyPos((int) newPosVector.y);
+    }
 
+    private void stepAir(){
+        projectile.setxPos(projectile.getxPos() + 1);
+        projectile.setyPos(math.calculateY(projectile.getxPos()));
     }
 
     public Goal getGoal() {