如何使用mouseListener在Slick2d中添加一個新的圖像

Question

我想製作代碼，以便當我點擊容器中的某個位置時，我創建一個新的圖像，其座標爲mouseX和Y，我點擊了它們。

我試圖做到這一點，但我不知道如何繪製新圖像，沒有舊圖像獲得與新圖像相同的座標，並且我不確定是否創建了不同的座標圖像，或者如果它只是相同的圖像，我會改變每次點擊時的座標。

我正在考慮創建一個圖像數組列表，然後每當我點擊某處時，它會向列表中添加一個新圖像，然後渲染只是呈現整個列表，但在這裏我不知道如何告訴渲染點擊每個圖像的位置（座標）。

這是我到目前爲止，我真的很感激，如果有人可以幫助我。讓我知道，如果有需要我澄清:)

package example; 

import java.util.ArrayList; 
import java.util.logging.Level; 
import java.util.logging.Logger; 

import org.lwjgl.input.Mouse; 
import org.newdawn.slick.AppGameContainer; 
import org.newdawn.slick.BasicGame; 
import org.newdawn.slick.GameContainer; 
import org.newdawn.slick.Graphics; 
import org.newdawn.slick.Image; 
import org.newdawn.slick.SlickException; 

public class SimpleSlickGame extends BasicGame 
{ 

    public String mouseCoords; 
    public String testClick ="Nothing clicked"; 
    public int mouseX; 
    public int mouseY; 

    public SimpleSlickGame(String gamename) 
    { 
     super(gamename); 
    } 

    @Override 
    public void init(GameContainer gc) throws SlickException { 
     mouseCoords = ""; 
    } 

    @Override 
    public void update(GameContainer gc, int i) throws SlickException { 
     int mouseX = Mouse.getX(); 
     int mouseY = Mouse.getY(); 

     mouseCoords = "Mouse X: "+ mouseX + " Mouse Y: "+ mouseY;    

    } 

    @Override 
    public void render(GameContainer gc, Graphics g) throws SlickException 
    { 
     g.drawString(mouseCoords, 250, 200); 
     g.drawRect(100, 100, 100, 100); 
     g.drawString(testClick, 200, 400); 

     g.drawImage(new Image("images/house.png"), mouseX, mouseY); 

    } 

    public void mousePressed(int button, int x, int y){ 
     mouseX = x; 
     mouseY = y; 

     if (button == 0){ 
      if((x> 100 && x<200) && (y > 100 && y < 200)){ 
       testClick = "inside box"; 
      } 
      else{ 
       testClick = "outside box"; 

      } 
     } 
    } 


    public static void main(String[] args) 
    { 
     try 
     { 
      AppGameContainer appgc; 
      appgc = new AppGameContainer(new SimpleSlickGame("Simple Slick Game")); 
      appgc.setDisplayMode(600, 600, false); 
      appgc.start(); 
     } 
     catch (SlickException ex) 
     { 
      Logger.getLogger(SimpleSlickGame.class.getName()).log(Level.SEVERE, null, ex); 
     } 
    } 
} 

Answer 1

好了，所以我做的文檔和谷歌搜索一些閱讀，並找到了解決的東西：P，雖然我不知道這是否是最優化的方式這樣做的（真的像一些批評!!）

這裏就是我所做的：

主類：

package example; 

import java.util.ArrayList; 
import java.util.List; 
import java.util.Random; 
import java.util.logging.Level; 
import java.util.logging.Logger; 

import org.lwjgl.input.Mouse; 
import org.newdawn.slick.AppGameContainer; 
import org.newdawn.slick.BasicGame; 
import org.newdawn.slick.GameContainer; 
import org.newdawn.slick.Graphics; 
import org.newdawn.slick.Image; 
import org.newdawn.slick.SlickException; 

public class SimpleSlickGame extends BasicGame 
{ 

    public String mouseCoords; 
    public String testClick ="Nothing clicked"; 
    public int mouseX; 
    public int mouseY; 
    private House[] house = new House[10]; 
    public List<House> houses = new ArrayList<House>(); 
    public House houseTest, houseTest2, houseTest3; 

    public SimpleSlickGame(String gamename) 
    { 
     super(gamename); 
    } 

    @Override 
    public void init(GameContainer gc) throws SlickException { 
     mouseCoords = ""; 

    } 

    @Override 
    public void update(GameContainer gc, int i) throws SlickException { 
     int mouseX = Mouse.getX(); 
     int mouseY = Mouse.getY(); 

     mouseCoords = "Mouse X: "+ mouseX + " Mouse Y: "+ mouseY;    

    } 

    @Override 
    public void render(GameContainer gc, Graphics g) throws SlickException 
    { 
     g.drawString(mouseCoords, 250, 200); 
     g.drawRect(100, 100, 100, 100); 
     g.drawString(testClick, 200, 400); 


     for(int i = 0; i<houses.size();i++){ 
      if(houses.get(i) != null){ 
      houses.get(i).render(gc, g); 
      } 
     } 


    } 

    public void mousePressed(int button, int x, int y){ 
     mouseX = x; 
     mouseY = y; 

     if (button == 0){ 
      if((x> 100 && x<200) && (y > 100 && y < 200)){ 
       testClick = "inside box"; 
       houses.add(new House(mouseX,mouseY)); 

      } 
      else{ 
       testClick = "outside box"; 

      } 
     } 
    } 


    public static void main(String[] args) 
    { 
     try 
     { 
      AppGameContainer appgc; 
      appgc = new AppGameContainer(new SimpleSlickGame("Simple Slick Game")); 
      appgc.setDisplayMode(600, 600, false); 
      appgc.start(); 
     } 
     catch (SlickException ex) 
     { 
      Logger.getLogger(SimpleSlickGame.class.getName()).log(Level.SEVERE, null, ex); 
     } 
    } 
} 

內訓課：

package example; 

import org.newdawn.slick.Color; 
import org.newdawn.slick.GameContainer; 
import org.newdawn.slick.Graphics; 
import org.newdawn.slick.SlickException; 

public class House { 

    int x; 
    int y; 
    int width = 20; 
    int height = 20; 


    House(int x, int y){ 
     this.x = x; 
     this.y = y; 
    } 

    public void render(GameContainer gc, Graphics g) throws SlickException 
    { 
     g.setColor(Color.white); 
     g.drawRect(x, y, width, height); 
    } 
}