Block flag documentation & cleanup

core/src/mindustry/world/blocks/power/ImpactReactor.java

@@ -4,6 +4,7 @@ import arc.*;
 import arc.graphics.*;
 import arc.graphics.g2d.*;
 import arc.math.*;
+import arc.struct.*;
 import arc.util.*;
 import arc.util.io.*;
 import mindustry.annotations.Annotations.*;
@@ -38,6 +39,7 @@ public class ImpactReactor extends PowerGenerator{
         liquidCapacity = 30f;
         hasItems = true;
         outputsPower = consumesPower = true;
+        flags = EnumSet.of(BlockFlag.reactor, BlockFlag.generator);
     }
 
     @Override

core/src/mindustry/world/blocks/power/NuclearReactor.java

@@ -48,7 +48,7 @@ public class NuclearReactor extends PowerGenerator{
         hasItems = true;
         hasLiquids = true;
         rebuildable = false;
-        flags = EnumSet.of(BlockFlag.reactor);
+        flags = EnumSet.of(BlockFlag.reactor, BlockFlag.generator);
     }
 
     @Override

core/src/mindustry/world/meta/BlockFlag.java

@@ -28,4 +28,7 @@ public enum BlockFlag{
     extinguisher;
 
     public final static BlockFlag[] all = values();
+
+    /** Values for logic only. Filters out some internal flags. */
+    public final static BlockFlag[] allLogic = {core, storage, generator, turret, factory, repair, rally, battery, resupply, reactor};
 }