Turn killable from variable to method (#11146)

* Turn killable from variable to method

* Update UnitType.java

* Update UnitComp.java

core/src/mindustry/entities/comp/UnitComp.java

@@ -532,6 +532,10 @@ abstract class UnitComp implements Healthc, Physicsc, Hitboxc, Statusc, Teamc, I
         return type.targetable(self(), targeter);
     }
 
+    public boolean killable(){
+        return type.killable(self());
+    }
+
     public boolean hittable(){
         return type.hittable(self());
     }
@@ -832,7 +836,7 @@ abstract class UnitComp implements Healthc, Physicsc, Hitboxc, Statusc, Teamc, I
 
     /** Actually destroys the unit, removing it and creating explosions. **/
     public void destroy(){
-        if(!isAdded() || !type.killable) return;
+        if(!isAdded() || !killable()) return;
 
         float explosiveness = 2f + item().explosiveness * stack().amount * 1.53f;
         float flammability = item().flammability * stack().amount / 1.9f;
@@ -937,7 +941,7 @@ abstract class UnitComp implements Healthc, Physicsc, Hitboxc, Statusc, Teamc, I
     @Override
     @Replace
     public void kill(){
-        if(dead || net.client() || !type.killable) return;
+        if(dead || net.client() || !killable()) return;
 
         //deaths are synced; this calls killed()
         Call.unitDeath(id);

core/src/mindustry/type/UnitType.java

@@ -593,6 +593,10 @@ public class UnitType extends UnlockableContent implements Senseable{
         return targetable || (vulnerableWithPayloads && unit instanceof Payloadc p && p.hasPayload());
     }
 
+    public boolean killable(Unit unit){
+        return killable;
+    }
+
     public boolean hittable(Unit unit){
         return hittable || (vulnerableWithPayloads && unit instanceof Payloadc p && p.hasPayload());
     }