diff --git a/Assets/Monolith.cs b/Assets/Monolith.cs
index cbb017b..0a18904 100644
--- a/Assets/Monolith.cs
+++ b/Assets/Monolith.cs
@@ -61,10 +61,12 @@ public class Monolith : MonoBehaviour
     simulate.Step(this);
   }
 
-  InputDevice headset;
+  InputDevice headset, offCon, mainCon;
   void Start()
   {
     headset = InputDevices.GetDeviceAtXRNode(XRNode.Head);
+    offCon = InputDevices.GetDeviceAtXRNode(XRNode.LeftHand);
+    mainCon = InputDevices.GetDeviceAtXRNode(XRNode.RightHand);
 
     testPos = piece.pos + Vector3.forward * 0.4f;
     testVel = Vector3.down;
@@ -90,7 +92,7 @@ public class Monolith : MonoBehaviour
   }
 
   Vector3 testPos;
-  Vector3Int voxelPos(Vector3 pos)
+  Vector3Int VoxelPos(Vector3 pos)
   {
     return new Vector3Int(Mathf.RoundToInt(pos.x), Mathf.RoundToInt(pos.y), Mathf.RoundToInt(pos.z));
   }
@@ -106,7 +108,7 @@ public class Monolith : MonoBehaviour
     {
       Vector3 d = (Vector3)allDirs[i] * 0.2f;
       d[axis] = 0;
-      Vector3 vPos = Voxelcast(voxelPos(pos + d), step);
+      Vector3 vPos = Voxelcast(VoxelPos(pos + d), step);
       float dist = Mathf.Abs(vPos[axis] - pos[axis]);
       if (dist < closest)
       {
@@ -141,6 +143,8 @@ public class Monolith : MonoBehaviour
   float delay;
   [ReadOnly]
   public bool movePiece;
+  [ReadOnly]
+  public Vector3 voxelCenter;
   void Update()
   {
     Vector3 mousePos = Input.mousePosition;
@@ -153,20 +157,64 @@ public class Monolith : MonoBehaviour
     {
       camForm.rotation = headsetRot;
     }
-    camForm.position = camForm.rotation * Vector3.back * 10;
+    camForm.position = voxelCenter + (camForm.rotation * Vector3.back * 10);
 
+    // cursor
+    Quaternion mainRot = Quaternion.identity;
+    mainCon.TryGetFeatureValue(CommonUsages.deviceRotation, out mainRot);
 
-    InputDevice mainCon = InputDevices.GetDeviceAtXRNode(XRNode.RightHand);
-    Vector2 wasd = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));
-    Vector2 joystick = Vector2.zero;
-    mainCon.TryGetFeatureValue(CommonUsages.primary2DAxis, out joystick);
+    Vector2 mainStick = Vector2.zero;
+    mainCon.TryGetFeatureValue(CommonUsages.primary2DAxis, out mainStick);
+    Vector3 mainDir = new Vector3(mainStick.x, 0, mainStick.y);
+    if (mainDir.sqrMagnitude > 0)
+    {
+      mainRot *= Quaternion.LookRotation(mainDir);
+    }
 
-    Vector2 input = wasd + joystick;
+    Vector3 mainCursor = testPos + (mainRot * Vector3.forward);
+    Vector3Int cvPos = VoxelPos(mainCursor);
 
-    testVel.x += input.x * 6 * Time.deltaTime;
-    testVel.z += input.y * 6 * Time.deltaTime;
+    bool mainTrigger = false;
+    mainCon.TryGetFeatureValue(CommonUsages.triggerButton, out mainTrigger);
+    if (mainTrigger)
+    {
+      if (!InVoxel(cvPos))
+      {
+        voxels[vIndex].pos = cvPos;
+        vIndex++;
+        if (vIndex == voxels.Length) { vIndex = 0; }
 
-    if (input.sqrMagnitude == 0)
+        simulate.Step(this);
+      }
+    }
+
+    Graphics.DrawMesh(render.meshPieceDebug,
+      mainCursor, Quaternion.identity,
+      render.matPieceDebug, 0
+    );
+
+    if (!InVoxel(cvPos))
+      Graphics.DrawMesh(render.meshPieceDebug,
+        cvPos, Quaternion.identity,
+        render.matPieceDebug, 0
+      );
+
+    // Movement
+    Quaternion offRot = Quaternion.identity;
+    offCon.TryGetFeatureValue(CommonUsages.deviceRotation, out offRot);
+
+    Vector2 offStick = Vector2.zero;
+    offCon.TryGetFeatureValue(CommonUsages.primary2DAxis, out offStick);
+    offStick += new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));
+    Vector3 offDir = new Vector3(offStick.x, 0, offStick.y);
+    if (offDir.sqrMagnitude > 0)
+    {
+      offRot *= Quaternion.LookRotation(offDir);
+    }
+
+    testVel += offRot * Vector3.forward * offStick.magnitude * 6 * Time.deltaTime;
+
+    if (offStick.sqrMagnitude == 0)
     {
       testVel.x *= 1 - (60 * Time.deltaTime);
       testVel.z *= 1 - (60 * Time.deltaTime);
diff --git a/Assets/Simulate.cs b/Assets/Simulate.cs
index 64d2ac7..66cde42 100644
--- a/Assets/Simulate.cs
+++ b/Assets/Simulate.cs
@@ -9,6 +9,14 @@ public class Simulate
   public void Step(Monolith mono)
   {
     generate.Step(mono);
+
+    Vector3 center = Vector3.zero;
+    for (int i = 0; i < mono.voxels.Length; i++)
+    {
+      center += mono.voxels[i].pos;
+    }
+
+    mono.voxelCenter = center / mono.voxels.Length;
   }
 }