Java & Slick 遊戲開發14- Making the Menu Buttons Work

package javagame;

import org.newdawn.slick.*;

import org.newdawn.slick.state.*;

import org.lwjgl.input.Mouse;

public class Menu extends BasicGameState

{

Image playNow;

Image exitGame;

public Menu(int State)

{

}

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

{

playNow = new Image("res/playNow.png");

exitGame = new Image("res/exitGame.png");

}

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

{

g.drawString("Welcome to My RPG Game",100,50);

playNow.draw(100,100);

exitGame.draw(100,200);

}

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

{

int posX = Mouse.getX();

int posY = Mouse.getY();

//play now button

if((posX>100 && posX<311) && (posY>209 && posY<260)){ → 根據你的圖片像素

if(Mouse.isButtonDown(0)){

sbg.enterState(1);

}

}

//exit button

if((posX>100 && posX<311) && (posY>109 && posY<160)){

if(Mouse.isButtonDown(0)){

System.exit(0); → 遊戲將退出並關閉程序

}

}

}

public int getID()

{

return 0;

}

}