Allow for core incineration via rules (#4242)

core/src/mindustry/game/Rules.java

@@ -97,6 +97,8 @@ public class Rules{
     public Team waveTeam = Team.crux;
     /** name of the custom mode that this ruleset describes, or null. */
     public @Nullable String modeName;
+    /** Whether cores incinerate items when full, just like in the campaign. */
+    public boolean coreIncinerates = false;
     /** special tags for additional info. */
     public StringMap tags = new StringMap();
 

core/src/mindustry/world/blocks/storage/CoreBlock.java

@@ -319,7 +319,7 @@ public class CoreBlock extends StorageBlock{
         }
 
         public boolean incinerate(){
-            return state.isCampaign();
+            return state.isCampaign() || state.rules.coreIncinerates;
         }
 
         @Override