WIP dynamic fog + bugfixes + cleanup

core/src/mindustry/world/Block.java

@@ -249,6 +249,9 @@ public class Block extends UnlockableContent implements Senseable{
     /** Radius of the light emitted by this block. */
     public float lightRadius = 60f;
 
+    /** How much fog this block uncovers, in tiles. Cannot be dynamic. <= 0 to disable. */
+    public int fogRadius = -1;
+
     /** The sound that this block makes while active. One sound loop. Do not overuse. */
     public Sound loopSound = Sounds.none;
     /** Active sound base volume. */
@@ -1038,6 +1041,10 @@ public class Block extends UnlockableContent implements Senseable{
             hasShadow = false;
         }
 
+        if(fogRadius > 0){
+            flags = flags.with(BlockFlag.hasFogRadius);
+        }
+
         //initialize default health based on size
         if(health == -1){
             boolean round = false;

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

@@ -23,10 +23,11 @@ public enum BlockFlag{
     /** Blocks that extinguishes fires. */
     extinguisher,
 
-    //single-block identifiers
+    //special, internal identifiers
     launchPad,
     unitCargoUnloadPoint,
-    unitAssembler;
+    unitAssembler,
+    hasFogRadius;
 
     public final static BlockFlag[] all = values();