Java & Slick 遊戲開發(10)- Grabbing Keyboard Input From the User

在Menu.class:

在Menu.class:

package javagame;

import org.newdawn.slick.*;

import org.newdawn.slick.state.*;

public class Menu extends BasicGameState

{

Image logo;

int logoX = 100;

int logoY = 100;

public Menu(int State)

{

}

public void init(GameContainer gc,StateBasedGame sbg) throws SlickException

{

logo = new Image("res/logo2.png");

}

public void render(GameContainer gc,StateBasedGame sbg, Graphics g) throws SlickException

{

g.drawImage(logo, logoX, logoY);

}

public void update(GameContainer gc,StateBasedGame sbg, int delta) throws SlickException

{

Input input = gc.getInput(); //獲得鍵盤輸入

if(input.isKeyDown(Input.KEY_UP)){ // 如果按向上箭頭

logoY -= 5; //圖片向上移動5像素

}

if(input.isKeyDown(Input.KEY_DOWN)){ //如果你按向下箭頭

logoY += 5; //圖片向下移動5像素

}

if(input.isKeyDown(Input.KEY_LEFT)){ //如果你按下左箭頭

logoX -= 5; // 圖片向左移動5像素

}

if(input.isKeyDown(Input.KEY_RIGHT)){ //如果你按下右箭頭

logoX += 5; // 圖片向右移動5像素

}

}

public int getID()

{

return 0;

}

}