GameEngineKeyEvents

 package com.bithome.events;

import com.bithome.engine.GameContainer;
import com.sun.org.apache.xpath.internal.operations.Bool;

import java.awt.event.*;

public class Input implements KeyListener, MouseWheelListener, MouseListener, MouseMotionListener {
    private final int NUM_KEYS = 256;
    private final int NUM_BUTTONS = 5;

    private Boolean[] keys = new Boolean[NUM_KEYS];
    private Boolean[] keysLast = new Boolean[NUM_KEYS];

    private Boolean[] buttons = new Boolean[NUM_BUTTONS];
    private Boolean[] buttonsLast = new Boolean[NUM_BUTTONS];

    private int mouseX, mouseY;
    private int scroll;

    private GameContainer gc = null;

    public Input(GameContainer gc) {
        this.gc = gc;
        mouseX = 0;
        mouseY = 0;
        scroll = 0;

        gc.getWindow().getCanvas().addKeyListener(this);
        gc.getWindow().getCanvas().addMouseWheelListener(this);
        gc.getWindow().getCanvas().addMouseMotionListener(this);
        gc.getWindow().getCanvas().addMouseListener(this);

        for(int i = 0; i < NUM_KEYS; i++) {
            keys[i] = false;
            keysLast[i] = false;
        }
    }

    public void update() {
        for(int i = 0; i < NUM_KEYS; i++) {
            keysLast[i] = keys[i];
        }

        for(int i = 0; i < NUM_BUTTONS; i++) {
            buttonsLast[i] = buttons[i];
        }
    }

    public void keyTyped(KeyEvent keyEvent) {

    }

    public void keyPressed(KeyEvent keyEvent) {
        keys[keyEvent.getKeyCode()] = true;
    }

    public void keyReleased(KeyEvent keyEvent) {
        keys[keyEvent.getKeyCode()] = false;
    }

    public void mouseClicked(MouseEvent mouseEvent) {

    }

    public void mousePressed(MouseEvent mouseEvent) {
        buttons[mouseEvent.getButton()] = true;
    }

    public void mouseReleased(MouseEvent mouseEvent) {
        buttons[mouseEvent.getButton()] = false;
    }

    public void mouseEntered(MouseEvent mouseEvent) {

    }

    public void mouseExited(MouseEvent mouseEvent) {

    }

    public void mouseDragged(MouseEvent mouseEvent) {
        mouseX = mouseEvent.getX() / (int)GameContainer.scale;
        mouseY = mouseEvent.getY() / (int)GameContainer.scale;
    }

    public void mouseMoved(MouseEvent mouseEvent) {
        mouseX = mouseEvent.getX() / (int)GameContainer.scale;
        mouseY = mouseEvent.getY() / (int)GameContainer.scale;
    }

    public void mouseWheelMoved(MouseWheelEvent mouseWheelEvent) {
        scroll = mouseWheelEvent.getWheelRotation();
    }

    public int getMouseX() {
        return mouseX;
    }

    public int getMouseY() {
        return mouseY;
    }

    public int getScroll() {
        return scroll;
    }

    public boolean isKey(int keycode) {
        return keys[keycode];
    }

    public boolean isKeyUp(int keycode) {
        return keysLast[keycode] && !keys[keycode];
    }

    public boolean isKeyDown(int keycode) {
        return keys[keycode] && !keysLast[keycode];
    }

    public boolean isButton(int buttonCode) {
        return buttons[buttonCode];
    }

    public boolean isButtonUp(int buttonCode) {
        return !buttons[buttonCode] && buttonsLast[buttonCode];
    }

    public boolean isButtonDown(int buttonCode) {
        return !buttonsLast[buttonCode] && buttons[buttonCode];
    }
}