Serpulo naval wave support

core/src/mindustry/world/blocks/environment/Floor.java

@@ -48,6 +48,8 @@ public class Floor extends Block{
     public float liquidMultiplier = 1f;
     /** whether this block is liquid. */
     public boolean isLiquid;
+    /** shallow water flag used for generation */
+    public boolean shallow = false;
     /** if true, this block cannot be mined by players. useful for annoying things like sand. */
     public boolean playerUnmineable = false;
     /** Group of blocks that this block does not draw edges on. */

core/src/mindustry/world/blocks/environment/ShallowLiquid.java

@@ -24,5 +24,6 @@ public class ShallowLiquid extends Floor{
         status = liquidBase.status;
         liquidDrop = liquidBase.liquidDrop;
         cacheLayer = liquidBase.cacheLayer;
+        shallow = true;
     }
 }