sorta working unsafesvecarray; and then issue #26 is fucking shit up

src/net/torvald/terrarum/tests/UnsafeTest.kt

@@ -0,0 +1,49 @@
+package net.torvald.terrarum.tests
+
+import net.torvald.terrarum.gameworld.toUint
+import sun.misc.Unsafe
+
+/**
+ * Created by minjaesong on 2019-06-22.
+ */
+class UnsafeTest {
+
+    private val unsafe: Unsafe
+    init {
+        val unsafeConstructor = Unsafe::class.java.getDeclaredConstructor()
+        unsafeConstructor.isAccessible = true
+        unsafe = unsafeConstructor.newInstance()
+    }
+
+    private val memsize = 2048L // must be big enough value so that your OS won't always return zero-filled pieces
+
+    fun main() {
+        val ptr = unsafe.allocateMemory(memsize)
+        printDump(ptr)
+
+        unsafe.setMemory(ptr, memsize, 0x00.toByte())
+        printDump(ptr)
+
+        for (k in 0 until memsize step 4) {
+            unsafe.putInt(ptr + k, 0xcafebabe.toInt())
+        }
+        printDump(ptr)
+
+        unsafe.freeMemory(ptr)
+    }
+
+
+    fun printDump(ptr: Long) {
+        println("MINIMINIDUMP START")
+        for (i in 0 until memsize) {
+            val b = unsafe.getByte(ptr + i).toUint().toString(16).padStart(2, '0')
+            print("$b ")
+        }
+        println("\nMINIMINIDUMP END")
+    }
+
+}
+
+fun main(args: Array<String>) {
+    UnsafeTest().main()
+}