Machen Sie ein Bild auf Heldenrichtung ändern, Einfache 2D-Spiel

Question

Hallo, ich habe ein bisschen Probleme mit meinem Java-Spiel, es ist sehr einfach gemacht, wie ich neu in Java bin. und das Spiel funktioniert gut so gut, wie ich es erreichen kann. Aber ich bin fest, wie ich die Bilder in Echtzeit ändern kann. Ich versuche herauszufinden, wie ich meine Monster vor mich stellen kann "der Held Frylark", wenn sie mich verfolgen. Ich habe 2 einfache Methoden in meiner Monsterklasse gemacht. links und rechts Wie könnte ich diese Methoden anwenden, um das Bild zu ändern vonimage = getImage ("/ Spiel/Bilder/Polizei-rechts.png");bisimage = getImage ("/ Spiel/images/police-left.png");. Oh, und in meiner Projekt-Bibliothek ist golden_0_2_3.jar, die einige Spiel-Engine-Sachen enthält.

Bitte. Vielen Dank von edwin.

import com.golden.gamedev.*; 
import java.awt.*; 
import java.awt.image.BufferedImage; 
import java.util.Random; 
import java.awt.event.KeyEvent; 

public class MyGame extends Game { 
// set the values 
public Random random; 
private Hero frylark; 
private Monster[] monsters = new Monster[3]; 
private Token coin; 
private GameBackGround grass; 
private BufferedImage image; 

public void initResources() { 
    // set a new random number 
    random = new Random(); 
    // get the background image. 
    image = getImage("/Game/images/background.png"); 
    // set the name "grass" to background and given the image from the image set above. 
    grass = new GameBackGround("grass", image); 
    // get the monsters image. 
    image = getImage("/Game/images/police.png"); 
    // give the monsters their names "" and set them their image from the image set above. 
    monsters[0] = new Monster("Monster", image); 
    monsters[1] = new Monster("Monster2", image); 
    monsters[2] = new Monster("Monster3", image); 
    // get the tokens image. 
    image = getImage("/Game/images/donut.png"); 
    // set the name "coin" for the token, then its x and y position, and set the image from the image set above. 
    coin = new Token("coin", 400, 300, image); 
    // get the heros image. 
    image = getImage("/Game/images/snake.png"); 
    // set the name "frylark" for the hero, then his score "0" and lives "5". 
    frylark = new Hero("Frylark", 0, 5); 

    //set the monsters random x and y positions. 
    monsters[0].setX(random.nextInt(750)); 
    monsters[0].setY(random.nextInt(550)); 
    monsters[1].setX(random.nextInt(750)); 
    monsters[1].setY(random.nextInt(550)); 
    monsters[2].setX(random.nextInt(750)); 
    monsters[2].setY(random.nextInt(550)); 
} 
// update method 
public void update(long elapsedTime) { 
    // Pause the hero "frylark" on hold of the space bar. 
    if (!keyDown(KeyEvent.VK_SPACE)){ 
    // if dead stop frylark moving on the 5 second game over sequence, being displays details and playing the game over sound. 
    if (Hero.dead(frylark)){ 
    if(keyDown(KeyEvent.VK_LEFT)) 
    { 
     // Move left 
     frylark.moveLeft(); 
    } 
    if (keyDown(KeyEvent.VK_RIGHT)) 
    { 
     // Move right 
     frylark.moveRight(); 
    } 
    if (keyDown(KeyEvent.VK_UP)) 
    { 
     // Move up on press of up key 
     frylark.moveUp(); 
    } 
    if (keyDown(KeyEvent.VK_DOWN)) 
    { 
     // Move down on press of down key 
     frylark.moveDown(); 
    } 
    } 
    if (keyDown(KeyEvent.VK_ESCAPE)) 
    { 
     // Exit game on press of esc key. 
     System.exit(0); 
    } 
    } 
    if (!keyDown(KeyEvent.VK_SPACE)) 
    { 
     // Pause the monsters on hold of the space bar 
     monsters[0].chase(frylark); 
     monsters[1].chase(frylark); 
     monsters[2].chase(frylark); 
    } 
    // if monster 0 has eaten frylark move to a random position and lose a life, plus play the lose life sound. 
    if (monsters[0].eaten(frylark)) { 
     monsters[0].setX(random.nextInt(750)); 
     monsters[0].setY(random.nextInt(550)); 
     frylark.loseLife(); 
     playSound("/Game/sounds/lost_a_life.wav"); 
    } 
    // if monster 1 has eaten frylark move to a random position and lose a life, plus play the lose life sound. 
    if (monsters[1].eaten(frylark)) { 
     monsters[1].setX(random.nextInt(750)); 
     monsters[1].setY(random.nextInt(550)); 
     frylark.loseLife(); 
     playSound("/Game/sounds/lost_a_life.wav"); 
    } 
    // if monster 2 has eaten frylark move to a random position and lose a life, plus play the lose life sound. 
    if (monsters[2].eaten(frylark)) { 
     monsters[2].setX(random.nextInt(750)); 
     monsters[2].setY(random.nextInt(550)); 
     frylark.loseLife(); 
     playSound("/Game/sounds/lost_a_life.wav"); 
    } 
    // if coin is collected increase score and move to a random position, and play the coin collect sound. 
    if (coin.collected(frylark)) { 
     coin.setX (random.nextInt(750)); 
     coin.setY (random.nextInt(550)); 
     frylark.increaseScore(); 
     playSound("/Game/sounds/coin.wav"); 
    } 


} 

public void render(Graphics2D g) { 
    // draw all the monsters, hero, and coin and background. 
    g.drawImage(grass.getImage(),grass.getX(),grass.getY(),null); 
    g.drawImage(monsters[0].getImage(), monsters[0].GetX(), monsters[0].GetY(), null); 
    g.drawImage(monsters[1].getImage(), monsters[1].GetX(), monsters[1].GetY(), null); 
    g.drawImage(monsters[2].getImage(), monsters[2].GetX(), monsters[2].GetY(), null); 
    g.drawImage(image,frylark.getX(),frylark.getY(),null); 
    g.drawImage(coin.getImage(),coin.getX(),coin.getY(),null); 
    // if monster 0 overlaps another monster mover him back 
    if (monsters[0].overlap(monsters)){ 
     monsters[0].x -=20; 
     monsters[0].y -=70; 
    } 
    // if monster 1 overlaps another monster mover him back 
    if (monsters[1].overlap(monsters)){ 
     monsters[1].x -=21; 
     monsters[1].y -=70; 
    } 
    // if monster 2 overlaps another monster mover him back 
    if (monsters[2].overlap(monsters)){ 
     monsters[2].x -=22; 
     monsters[2].y -=70; 
    } 
    // draw the lives bar, and set the font colour and size 
    g.setColor(Color.RED); 
    g.setFont(new Font("default", Font.BOLD, 18)); 
    for (int i = 0; i < frylark.getLives(); i++) { 
     g.fillRect((i + 1) * 15, 10, 10, 10); 
    } 
    // draw the score 
    g.setColor(Color.GREEN); 
    g.drawString("Score: " + frylark.getScore(), 10, 50); 
    // draw the level 
    g.setColor(Color.YELLOW); 
    g.drawString("level: " + frylark.getScoreNum(), 10, 80); 
    // game over sequence, changes the font to size 40 and displays game over, as well as the payers score and level reached plus the game over sound. 
    if (frylark.getLives() ==0){ 
     g.setColor(Color.RED); 
     g.setFont(new Font("override", Font.BOLD, 40)); 
     g.drawString("Game over !", 280, 290); 
     playSound("/Game/sounds/game_over.wav"); 
     g.drawString("You reached Level " + frylark.getScoreNum() + " Your Score: " + frylark.getScore(), 60, 330); 
    } 

} 
// main method which after all classes have been read and checked, "Game development environment OK! " will be printed to the console. 
// then a new game is created and given dimensions and launched. 
public static void main(String args[]) { 
System.out.println("Game development environment OK! "); 
GameLoader gameLoader = new GameLoader(); 
MyGame myGame = new MyGame(); 
gameLoader.setup(myGame,new Dimension(800,600),false); 
gameLoader.start(); 
} 


} 

und mein Monster Klasse

import java.util.Random; 
import java.awt.image.BufferedImage; 

    public class Monster { 
    private String name; 
    int x; 
    int y; 
    private BufferedImage image; 
    Random rand; 

    public Monster (String nameIn, BufferedImage imageIn) 
    { 
     name = nameIn; 
     x = 0; 
     y = 0; 
     image = imageIn; 

    } 


    public void chase(Hero hero) { 
     if (hero.getX() < x) { // if hero is to the left 
      x--; 
     } 

     if (hero.getX() > x) { // if hero is to the right 
      x++ ; 
     } 

     if (hero.getY() < y) { // if hero is to the above 
      y--; 
     } 

     if (hero.getY() > y) { // if hero is to the below 
      y++; 
     } 

    } 

    public boolean overlap(Monster monsters[]){ 
     if (monsters[0].x == monsters[1].x && monsters[0].y == monsters[1].y || monsters[0].x == monsters[2].x && monsters[0].y == monsters[2].y || 
       monsters[1].x == monsters[0].x && monsters[1].y == monsters[0].y || monsters[1].x == monsters[2].x && monsters[1].y == monsters[2].y || 
        monsters[2].x == monsters[0].x && monsters[2].y == monsters[0].y || monsters[2].x == monsters[1].x && monsters[2].y == monsters[1].y) { 
      return true; 
     } 
     else{ 
     return false; 
     } 
    } 


    public boolean eaten(Hero hero) { 
     if (hero.getX() == x && hero.getY() == y) { 
      return true; 
     } 
     else { 
      return false; 
     } 
    } 

    public BufferedImage getImage() { 
     return image; 
    } 


    public int GetX(){ 
     return x; 
    } 

    public int GetY(){ 
     return y; 
    } 

    public String getName() 
    { 
     return this.name; 
    } 

    public void setX(int xIn) { 
     x = xIn; 
    } 

    public void setY(int yIn) { 
     y = yIn; 
    } 

    public boolean left(Hero hero) { 
     if (hero.getX() < x) { 
      return true; 
     } 
     else { 
      return false; 
     } 
    } 
    public boolean right(Hero hero) { 
     if (hero.getX() > x) { 
      return true; 
     } 
     else { 
      return false; 
     } 
    } 
} 

Answer 1

würde ich Ihre Monster Konstruktor ändern beide Bilder zu akzeptieren. Ändern Sie anschließend Monster.getImage(), um link() aufzurufen und den richtigen basierend auf dem Ergebnis zurückzugeben. Du musst wahrscheinlich auch nicht richtig() anrufen, denn wenn das Monster nicht nach links zeigt, dann weißt du, dass es nach rechts muss. Es sei denn, Sie möchten anspruchsvoller werden und eine Ansicht hinzufügen, die nach vorne oder nach hinten gerichtet ist.