tags on ingame blocks

src/net/torvald/terrarum/blockproperties/BlockProp.kt

@@ -35,6 +35,7 @@ class BlockProp {
     var strength: Int = 0
     var density: Int = 0
     var viscosity: Int = 0
+    /** Fluid colour */
     var colour: Int = 0
 
     /** isSolid is NOT SAME AS !isOpaqueis
@@ -98,6 +99,8 @@ class BlockProp {
     @Transient var rngBase1 = Math.random().toFloat() // flicker P0, etc
     @Transient var rngBase2 = Math.random().toFloat() // flicker P1, etc
 
+    var tags = HashSet<String>()
+
     /**
      * Mainly intended to be used by third-party modules
      */