[英]How to make my Main Menu buttons to work in my Game
我正在尝试为我的游戏制作主菜单,但我不知道如何让我的按钮工作。
我正在使用Slic2D
和LWJGL
库
我的 GameMenu 类:
package lt.CobaltPlanet.nelixus.state;
import org.newdawn.slick.*;
import org.newdawn.slick.state.*;
public class GameMenu extends BasicGameState{
Image Backgruond,Game_Title;
Image play,play_hover,play_pressed;
Image option,option_hover,option_pressed;
Image quit,quit_hover,quit_pressed;
public GameMenu(int state){
}
public void init(GameContainer gamecontainer1, StateBasedGame statebasedgame1) throws SlickException{
Game_Title = new Image("res/Game_Title.png");
Backgruond = new Image("res/BG.png");
play = new Image("res/Main_menu_buttons/play.png");
play_hover = new Image("res/Main_menu_buttons/play_hover.png");
play_pressed = new Image("res/Main_menu_buttons/play_pressed.png");
quit = new Image("res/Main_menu_buttons/quit.png");
quit_hover = new Image("res/Main_menu_buttons/quit_hover.png");
quit_pressed = new Image("res/Main_menu_buttons/quit_pressed.png");
option = new Image("res/Main_menu_buttons/options.png");
option_hover = new Image("res/Main_menu_buttons/options_hover.png");
option_pressed = new Image("res/Main_menu_buttons/options_pressed.png");
}
public void render(GameContainer gamecontainer1, StateBasedGame statebasedgame1, Graphics g1) throws SlickException{
Backgruond.draw(0,0);
play.draw(205,206);
option.draw(205,286);
quit.draw(205, 366);
Game_Title.draw(0,-100);
//Mouse Position
g1.drawString(mousePos, 10, 25);
}
public void update(GameContainer gamecontainer1, StateBasedGame statebasedgame1, int delta1) throws SlickException{
}
public int getID(){
return 1;
}
}
int mousePosX = Mouse.getX();
int mousePosY = Mouse.getY();
并检查鼠标是否被点击:
Mouse.isButtonDown(0);
使用 Slick 的Rectangle.contains(float x, float y)
来查看该点是否在您的按钮的命中框中。 假设您有一个带有 Slick 矩形设置的按钮:
if(Mouse.isButtonDown(0) && buttonHitbox.contains(mousePosX, mousePosY)) {
System.out.println("The button was clicked!");
}
更新:
if(quitRect.contains(Mouse.getX(), Mouse.getY()) {
//draw hover image
quit_hover.draw();
//check if button is pressed
if(Mouse.isButtonDown(0)) {
System.out.println("Button pressed");
}
}
这也会绘制悬停图像。
更新二:
package lt.CobaltPlanet.nelixus.state;
import org.newdawn.slick.*;
import org.newdawn.slick.state.*;
import org.newdawn.slick.geom.*;
public class GameMenu extends BasicGameState{
boolean playHover = false;
Rectangle playRect;
Image Backgruond,Game_Title;
Image play,play_hover,play_pressed;
Image option,option_hover,option_pressed;
Image quit,quit_hover,quit_pressed;
public GameMenu(int state){
}
public void init(GameContainer gamecontainer1, StateBasedGame statebasedgame1) throws SlickException{
Game_Title = new Image("res/Game_Title.png");
Backgruond = new Image("res/BG.png");
play = new Image("res/Main_menu_buttons/play.png");
playRect = new Rectangle(205, 206, play.getWidth(), play.getHeight());
play_hover = new Image("res/Main_menu_buttons/play_hover.png");
play_pressed = new Image("res/Main_menu_buttons/play_pressed.png");
quit = new Image("res/Main_menu_buttons/quit.png");
quit_hover = new Image("res/Main_menu_buttons/quit_hover.png");
quit_pressed = new Image("res/Main_menu_buttons/quit_pressed.png");
option = new Image("res/Main_menu_buttons/options.png");
option_hover = new Image("res/Main_menu_buttons/options_hover.png");
option_pressed = new Image("res/Main_menu_buttons/options_pressed.png");
}
public void render(GameContainer gamecontainer1, StateBasedGame statebasedgame1, Graphics g1) throws SlickException{
Backgruond.draw(0,0);
play.draw(205,206);
option.draw(205,286);
quit.draw(205, 366);
if(playHover) play_hover.draw(205, 206);
Game_Title.draw(0,-100);
//Mouse Position
g1.drawString(mousePos, 10, 25);
}
public void update(GameContainer gamecontainer1, StateBasedGame statebasedgame1, int delta1) throws SlickException{
playHover = false;
if(playRect.contains(Mouse.getX(), Mouse.getY()) {
playHover = true;
if(Mouse.isbuttonDown(0)) {
System.out.println("The button was pressed!");
}
}
}
public int getID(){
return 1;
}
}
这是您的代码,我添加了播放按钮的功能。 现在您应该可以自己完成剩下的工作了。
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