Bulwark shield mechanics mostly done

core/src/mindustry/entities/abilities/Ability.java

@@ -3,11 +3,16 @@ package mindustry.entities.abilities;
 import arc.*;
 import arc.scene.ui.layout.*;
 import mindustry.gen.*;
+import mindustry.type.*;
 
 public abstract class Ability implements Cloneable{
+    //the one and only data variable that is synced.
+    public float data;
+
     public void update(Unit unit){}
     public void draw(Unit unit){}
     public void death(Unit unit){}
+    public void init(UnitType type){}
 
     public Ability copy(){
         try{