Re-added option for RTS AI on Serpulo (likely buggy)

core/src/mindustry/content/Blocks.java

@@ -5968,6 +5968,7 @@ public class Blocks{
             );
             size = 3;
             consumePower(1.2f);
+            researchCostMultiplier = 0.5f;
         }};
 
         airFactory = new UnitFactory("air-factory"){{
@@ -5978,6 +5979,7 @@ public class Blocks{
             );
             size = 3;
             consumePower(1.2f);
+            researchCostMultiplier = 0.5f;
         }};
 
         navalFactory = new UnitFactory("naval-factory"){{

core/src/mindustry/content/Planets.java

@@ -87,6 +87,7 @@ public class Planets{
             };
             campaignRuleDefaults.fog = true;
             campaignRuleDefaults.showSpawns = true;
+            campaignRuleDefaults.rtsAI = true;
 
             unlockedOnLand.add(Blocks.coreBastion);
         }};
@@ -148,6 +149,7 @@ public class Planets{
                 r.showSpawns = false;
                 r.coreDestroyClear = true;
             };
+            showRtsAIRule = true;
             iconColor = Color.valueOf("7d4dff");
             atmosphereColor = Color.valueOf("3c1b8f");
             atmosphereRadIn = 0.02f;

core/src/mindustry/content/UnitTypes.java

@@ -98,6 +98,7 @@ public class UnitTypes{
         //region ground attack
 
         dagger = new UnitType("dagger"){{
+            researchCostMultiplier = 0.5f;
             speed = 0.5f;
             hitSize = 8f;
             health = 150;
@@ -606,6 +607,7 @@ public class UnitTypes{
         //region ground legs
 
         crawler = new UnitType("crawler"){{
+            researchCostMultiplier = 0.5f;
             aiController = SuicideAI::new;
 
             speed = 1f;
@@ -977,6 +979,7 @@ public class UnitTypes{
         //region air attack
 
         flare = new UnitType("flare"){{
+            researchCostMultiplier = 0.5f;
             speed = 2.7f;
             accel = 0.08f;
             drag = 0.04f;