How to move a sprite with the keyboard keys using libGDX?

Question

i have just started using java and libgdx and have this code, very simply it prints a sprite onto the screen. This works perfectly, and i learnt a lot from it.

Answer 1

In your game loop method (maybe render or make one) need to add an input handler (implementing InputProcessor). The class InputProcessor have methods like:

public boolean keyDown (int keycode);

/**
 * Called when a key was released
 * 
 * @param keycode one of the constants in {@link Input.Keys}
 * @return whether the input was processed
 */
public boolean keyUp (int keycode);

/**
 * Called when a key was typed
 * 
 * @param character The character
 * @return whether the input was processed
 */
public boolean keyTyped (char character);

and the class Input.Keys has a lot of static varibles as keycodes. For example:

        public static final int D = 32;
        public static final int A = 29;
        public static final int S = 47;
        public static final int W = 51;

So, implement key* methods and check if some key are pressed and increment or decrement X/Y from mario.

EDIT: Check this links: http://code.google.com/p/libgdx/source/browse/trunk/gdx/src/com/badlogic/gdx/InputProcessor.java http://code.google.com/p/libgdx/source/browse/trunk/gdx/src/com/badlogic/gdx/Input.java

or, in trunk, how to a demos handle input: http://code.google.com/p/libgdx/source/browse/#svn%2Ftrunk%2Fdemos

Hope help