fluids separated from blocks

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

@@ -0,0 +1,31 @@
+package net.torvald.terrarum.blockproperties
+
+import net.torvald.terrarum.gameitems.ItemID
+
+/**
+ * Created by minjaesong on 2023-10-09.
+ */
+class FluidCodex {
+
+    @Transient val blockProps = HashMap<ItemID, FluidProp>()
+
+    @Transient private val nullProp = FluidProp()
+
+
+    operator fun get(fluidID: ItemID?): FluidProp {
+        if (fluidID == null || fluidID == Fluid.NULL) {
+            return nullProp
+        }
+
+        try {
+            return if (fluidID.startsWith("fluid@"))
+                blockProps[fluidID.substring(6)]!!
+            else
+                blockProps[fluidID]!!
+        }
+        catch (e: NullPointerException) {
+            throw NullPointerException("Fluidprop with id $fluidID does not exist.")
+        }
+    }
+
+}