Checks to prevent uncaptureable sectors

core/src/mindustry/game/Rules.java

@@ -106,6 +106,8 @@ public class Rules{
         public boolean ai;
         /** TODO Tier of blocks/designs that the AI uses for building. [0, 1]*/
         public float aiTier = 0f;
+        /** Whether, when AI is enabled, ships should be spawned from the core. */
+        public boolean aiCoreSpawn = true;
         /** If true, blocks don't require power or resources. */
         public boolean cheat;
         /** If true, resources are not consumed when building. */

core/src/mindustry/game/SectorInfo.java

@@ -101,6 +101,17 @@ public class SectorInfo{
 
     /** Write contents of meta into main storage. */
     public void write(){
+        //enable attack mode when there's a core.
+        if(state.rules.waveTeam.core() != null){
+            attack = true;
+            winWave = 0;
+        }
+
+        //if there are infinite waves and no win wave, add a win wave.
+        if(waves && winWave <= 0 && !attack){
+            winWave = 30;
+        }
+
         state.wave = wave;
         state.rules.waves = waves;
         state.rules.waveSpacing = waveSpacing;
@@ -114,8 +125,6 @@ public class SectorInfo{
             //ensure capacity.
             entity.items.each((i, a) -> entity.items.set(i, Math.min(a, entity.storageCapacity)));
         }
-
-        //TODO write items.
     }
 
     /** Prepare data for writing to a save. */