Check for control peripheral supports

src/com/annimon/influencexxii/Pointer.java

@@ -1,5 +1,7 @@
 package com.annimon.influencexxii;
 
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.Input.Peripheral;
 import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
 
 /**
@@ -8,6 +10,8 @@ import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
  */
 public class Pointer {
 
+    private boolean isAccelerometerSupports, isHardwareKeyboardSupports;
+    
     private float screenWidth, screenHeight;
     private float x, y;
     
@@ -15,6 +19,9 @@ public class Pointer {
         x = width / 2;
         y = height / 2;
         setScreenParameters(width, height);
+        
+        isAccelerometerSupports = Gdx.input.isPeripheralAvailable(Peripheral.Accelerometer);
+        isHardwareKeyboardSupports = Gdx.input.isPeripheralAvailable(Peripheral.HardwareKeyboard);
     }
     
     public void setScreenParameters(float width, float height) {
@@ -23,6 +30,23 @@ public class Pointer {
     }
     
     public void draw(ShapeRenderer renderer) {
+        control();
         DrawUtils.drawPointer(renderer, x, y, screenWidth, screenHeight, 1);
     }
+    
+    private void control() {
+        if (isAccelerometerSupports) {
+            controlByAccelerometer();
+        } else if (isHardwareKeyboardSupports) {
+            controlByKeyboard();
+        }
+    }
+    
+    private void controlByAccelerometer() {
+        
+    }
+    
+    private void controlByKeyboard() {
+        
+    }
 }