WIP map objective system

core/src/mindustry/game/MapObjectives.java

@@ -0,0 +1,29 @@
+package mindustry.game;
+
+import arc.func.*;
+import arc.struct.*;
+import arc.util.*;
+
+public class MapObjectives{
+    public static Seq<Prov<MapObjective>> allObjectiveTypes = Seq.with();
+
+    public abstract class MapObjective{
+
+        public boolean complete(){
+            return false;
+        }
+
+        public void update(){
+
+        }
+
+        /** Reset internal state, if any. */
+        public void reset(){
+
+        }
+
+        public @Nullable String details(){
+            return null;
+        }
+    }
+}

core/src/mindustry/game/Rules.java

@@ -6,6 +6,7 @@ import arc.util.*;
 import arc.util.serialization.*;
 import arc.util.serialization.Json.*;
 import mindustry.content.*;
+import mindustry.game.MapObjectives.*;
 import mindustry.graphics.g3d.*;
 import mindustry.io.*;
 import mindustry.type.*;
@@ -115,6 +116,8 @@ public class Rules{
     public ObjectSet<String> researched = new ObjectSet<>();
     /** Block containing these items as requirements are hidden. */
     public ObjectSet<Item> hiddenBuildItems = Items.erekirOnlyItems.asSet();
+    /** Campaign-only map objectives. */
+    public Seq<MapObjective> objectives = new Seq<>();
     /** HIGHLY UNSTABLE/EXPERIMENTAL. DO NOT USE THIS. */
     public boolean fog = false;
     /** If fog = true, this is whether static (black) fog is enabled. */