Polar aerodrome fixes / Objective timer multiplier for difficulty

core/src/mindustry/game/CampaignRules.java

@@ -16,6 +16,7 @@ public class CampaignRules{
         rules.staticFog = rules.fog = fog;
         rules.showSpawns = showSpawns;
         rules.randomWaveAI = randomWaveAI;
+        rules.objectiveTimerMultiplier = difficulty.waveTimeMultiplier;
         if(planet.showRtsAIRule && rules.attackMode){
             boolean swapped = rules.teams.get(rules.waveTeam).rtsAi != rtsAI;
             rules.teams.get(rules.waveTeam).rtsAi = rtsAI;

core/src/mindustry/game/MapObjectives.java

@@ -442,7 +442,7 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
 
         @Override
         public boolean update(){
-            return (countup += Time.delta) >= duration;
+            return (countup += Time.delta) >= duration * state.rules.objectiveTimerMultiplier;
         }
 
         @Override
@@ -454,7 +454,7 @@ public class MapObjectives implements Iterable<MapObjective>, Eachable<MapObject
         @Override
         public String text(){
             if(text != null){
-                int i = (int)((duration - countup) / 60f);
+                int i = (int)((duration * state.rules.objectiveTimerMultiplier - countup) / 60f);
                 StringBuilder timeString = new StringBuilder();
 
                 int m = i / 60;

core/src/mindustry/game/Rules.java

@@ -101,6 +101,8 @@ public class Rules{
     public float buildSpeedMultiplier = 1f;
     /** Multiplier for percentage of materials refunded when deconstructing. */
     public float deconstructRefundMultiplier = 0.5f;
+    /** Multiplier for time in timer objectives. */
+    public float objectiveTimerMultiplier = 1f;
     /** No-build zone around enemy core radius. */
     public float enemyCoreBuildRadius = 400f;
     /** If true, no-build zones are calculated based on the closest core. */