de.brainstormsoftworks.taloonerrl.system.InputSystem.java Source code

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Here is the source code for de.brainstormsoftworks.taloonerrl.system.InputSystem.java

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/*******************************************************************************
 * Copyright (c) 2015 David Becker.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 *
 * Contributors:
 *     David Becker - initial API and implementation
 ******************************************************************************/
package de.brainstormsoftworks.taloonerrl.system;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.InputAdapter;

/**
 * system that processes the input of the player
 *
 * @author David Becker
 *
 */
public final class InputSystem extends InputAdapter {

    private static boolean keyPressedUp = false;
    private static boolean keyPressedDown = false;
    private static boolean keyPressedLeft = false;
    private static boolean keyPressedRight = false;

    private float delayToNextTurn = 0f;
    /** minimum delay between player turns */
    private static final float delayBetweenTurns = 0.03f;

    @Override
    public boolean keyDown(final int keycode) {
        // invalidate all the previous input
        keyPressedUp = false;
        keyPressedDown = false;
        keyPressedLeft = false;
        keyPressedRight = false;

        final float deltaTime = Gdx.graphics.getDeltaTime();
        delayToNextTurn -= deltaTime;
        if (delayToNextTurn <= 0f) {
            // set new input
            if (Keys.UP == keycode) {
                keyPressedUp = true;
            } else if (Keys.DOWN == keycode) {
                keyPressedDown = true;
            } else if (Keys.LEFT == keycode) {
                keyPressedLeft = true;
            } else if (Keys.RIGHT == keycode) {
                keyPressedRight = true;
            }
            delayToNextTurn = delayBetweenTurns;
            return true;
        }
        return false;
    }

    /**
     * getter for {@link #keyPressedUp}
     *
     * @return the keyPressedUp
     */
    public static boolean isKeyPressedUp() {
        return keyPressedUp;
    }

    /**
     * getter for {@link #keyPressedDown}
     *
     * @return the keyPressedDown
     */
    public static boolean isKeyPressedDown() {
        return keyPressedDown;
    }

    /**
     * getter for {@link #keyPressedLeft}
     *
     * @return the keyPressedLeft
     */
    public static boolean isKeyPressedLeft() {
        return keyPressedLeft;
    }

    /**
     * getter for {@link #keyPressedRight}
     *
     * @return the keyPressedRight
     */
    public static boolean isKeyPressedRight() {
        return keyPressedRight;
    }

}