如何使用箭頭鍵在GridWorld中移動一個Bug

我正在爲我的計算機科學類製作遊戲，並試圖移動一個用箭頭鍵擴展Bug的角色對象。我應該把代碼移動到Character類還是World類的箭頭鍵中？代碼應該是什麼樣子？現在我已經在Character類中獲得了這個代碼，它符合要求，但是當我嘗試在網格中運行它時，按下箭頭鍵時不會發生任何事情。如何使用箭頭鍵在GridWorld中移動一個Bug

public class Character extends Bug 
{ 
Random pokemon; 
public Character() 
{ 

} 

public void act(KeyEvent e) 
{ 
     move(e); 
     pokemon = new Random(); 
     if(pokemon.nextInt(10) == 5) 
      System.out.println("It works!!"); 
} 

public void move(KeyEvent e) 
{ 
    Grid<Actor> gr = getGrid(); 
    Location loc = getLocation(); 
    if(gr == null) 
     return; 
    if(e.getKeyCode() == KeyEvent.VK_RIGHT) 
    { 
     if(!(getDirection() == 90)) 
      setDirection(90); 
     else 
     { 

      Location next = loc.getAdjacentLocation(getDirection()); 
      if (gr.isValid(next)) 
       moveTo(next); 
      else 
       removeSelfFromGrid(); 
     } 
    } 
    else if(e.getKeyCode() == KeyEvent.VK_LEFT) 
    { 
     if(!(getDirection() == 270)) 
      setDirection(270); 
     else 
     { 

      Location next = loc.getAdjacentLocation(getDirection()); 
      if (gr.isValid(next)) 
       moveTo(next); 
      else 
       removeSelfFromGrid(); 
     } 
    } 
    else if(e.getKeyCode() == KeyEvent.VK_UP) 
    { 
     if(!(getDirection() == 0)) 
      setDirection(0); 
     else 
     { 

      Location next = loc.getAdjacentLocation(getDirection()); 
      if (gr.isValid(next)) 
       moveTo(next); 
      else 
       removeSelfFromGrid(); 
     } 
    } 
    else if(e.getKeyCode() == KeyEvent.VK_DOWN) 
    { 
     if(!(getDirection() == 180)) 
      setDirection(180); 
     else 
     { 

      Location next = loc.getAdjacentLocation(getDirection()); 
      if (gr.isValid(next)) 
       moveTo(next); 
      else 
       removeSelfFromGrid(); 
     } 
    } 

public class Character extends Bug 
{ 
Random pokemon; 
public Character() 
{ 

} 

public void act(KeyEvent e) 
{ 
     move(e); 
     pokemon = new Random(); 
     if(pokemon.nextInt(10) == 5) 
      System.out.println("It works!!"); 
} 

public void move(KeyEvent e) 
{ 
    Grid<Actor> gr = getGrid(); 
    Location loc = getLocation(); 
    if(gr == null) 
     return; 
    if(e.getKeyCode() == KeyEvent.VK_RIGHT) 
    { 
     if(!(getDirection() == 90)) 
      setDirection(90); 
     else 
     { 

      Location next = loc.getAdjacentLocation(getDirection()); 
      if (gr.isValid(next)) 
       moveTo(next); 
      else 
       removeSelfFromGrid(); 
     } 
    } 
    else if(e.getKeyCode() == KeyEvent.VK_LEFT) 
    { 
     if(!(getDirection() == 270)) 
      setDirection(270); 
     else 
     { 

      Location next = loc.getAdjacentLocation(getDirection()); 
      if (gr.isValid(next)) 
       moveTo(next); 
      else 
       removeSelfFromGrid(); 
     } 
    } 
    else if(e.getKeyCode() == KeyEvent.VK_UP) 
    { 
     if(!(getDirection() == 0)) 
      setDirection(0); 
     else 
     { 

      Location next = loc.getAdjacentLocation(getDirection()); 
      if (gr.isValid(next)) 
       moveTo(next); 
      else 
       removeSelfFromGrid(); 
     } 
    } 
    else if(e.getKeyCode() == KeyEvent.VK_DOWN) 
    { 
     if(!(getDirection() == 180)) 
      setDirection(180); 
     else 
     { 

      Location next = loc.getAdjacentLocation(getDirection()); 
      if (gr.isValid(next)) 
       moveTo(next); 
      else 
       removeSelfFromGrid(); 
     } 
    }

這段代碼是否正確的是一個KeyEvent，我怎樣才能從World類調用這段代碼？任何幫助將不勝感激！

來源

2013-03-27 Dustin Weinmann

在ActorWorld類中有一個方法boolean keyPressed(String description, Location loc)此方法是爲了在子類中被重寫的唯一目的。 description是KeyStroke，格式爲here，loc爲按下按鍵時光標所在的Location。（雖然在你的情況下沒關係）

所以總之，你應該擴大KeyPressed在一個自定義CharacterWorld extends ActorWorld類。

來源

2013-04-03 22:22:38

謝謝我不知道有一個keyPressed方法，這有點幫助。我仍然堅持要在keyPressed方法中放置什麼，以便我可以使用箭頭鍵移動字符。 – 2013-04-24 21:37:48

您可以使用switch語句來確定字符串描述是「UP」，「DOWN」，「LEFT」還是「RIGHT」。在任何這些情況下，該方法應移動該字符，然後返回true。如果它不是這些擊鍵，則返回false。 – 2013-04-25 02:38:34

如何使用箭頭鍵在GridWorld中移動一個Bug

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