Merging changes from private branch

core/src/mindustry/entities/pattern/ShootHelix.java

@@ -6,6 +6,20 @@ import arc.util.*;
 public class ShootHelix extends ShootPattern{
     public float scl = 2f, mag = 1.5f, offset = Mathf.PI * 1.25f;
 
+    public ShootHelix(float scl, float mag){
+        this.scl = scl;
+        this.mag = mag;
+    }
+
+    public ShootHelix(float scl, float mag, float offset){
+        this.scl = scl;
+        this.mag = mag;
+        this.offset = offset;
+    }
+
+    public ShootHelix(){
+    }
+
     @Override
     public void shoot(int totalShots, BulletHandler handler, @Nullable Runnable barrelIncrementer){
         for(int i = 0; i < shots; i++){

core/src/mindustry/entities/pattern/ShootSpread.java

@@ -14,6 +14,10 @@ public class ShootSpread extends ShootPattern{
     public ShootSpread(){
     }
 
+    public static ShootSpread circle(int points){
+        return new ShootSpread(points, 360f / points);
+    }
+
     @Override
     public void shoot(int totalShots, BulletHandler handler, @Nullable Runnable barrelIncrementer){
         for(int i = 0; i < shots; i++){