always sorting arraylist; more wire stuffs

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

@@ -0,0 +1,26 @@
+package net.torvald.terrarum.blockproperties
+
+/**
+ * Created by minjaesong on 2019-03-12.
+ */
+object Wire {
+
+    /* A mapping for World's conduitTypes bits */
+    const val BIT_NONE = 0
+    const val BIT_SIGNAL_RED = 1
+    const val BIT_UTILITY_PROTOTYPE = 2
+    const val BIT_POWER_LOW = 4
+    const val BIT_POWER_HIGHT = 8
+    const val BIT_ETHERNET = 16
+
+    /* A mapping for World's conduitFills[] index */
+    const val FILL_ID_SIGNAL_RED = 0
+    const val FILL_ID_UTILITY_PROTOTYPE = 1
+
+    fun bitToConduitFillID(bit: Int) = when(bit) {
+        BIT_SIGNAL_RED -> FILL_ID_SIGNAL_RED
+        BIT_UTILITY_PROTOTYPE -> FILL_ID_UTILITY_PROTOTYPE
+        else -> null
+    }
+
+}