making xinput to actually work (tested with xbone gamepad)

src/net/torvald/terrarum/controller/GdxControllerAdapter.kt

@@ -0,0 +1,29 @@
+package net.torvald.terrarum.controller
+
+import com.badlogic.gdx.controllers.Controller
+
+/**
+ * Created by minjaesong on 2019-02-09.
+ */
+class GdxControllerAdapter(val c: Controller): TerrarumController {
+
+    override fun getButton(index: Int): Boolean {
+        return c.getButton(index)
+    }
+
+    override fun getAxis(index: Int): Float {
+        return c.getAxis(index)
+    }
+
+    override fun getPov(): Int {
+        TODO()
+    }
+
+    override fun getName(): String {
+        return c.name
+    }
+
+    override fun setRumble(left: Float, right: Float) {
+        return
+    }
+}