我目前正在使用標準庫在java中進行RPG黑客和斜槓。用鼠標輸入畫布重疊按鈕輸入
對於這些遊戲,我在一個獨立的軟件包中製作了CustomButton
課程,我只是複製並粘貼幾乎所有的遊戲,然後進行一些特定於遊戲的修改。
這是類::
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.WritableRaster;
import objects.Collectable;
public final class CustomButton implements MouseListener {
// private BufferedImage image;
private String text = "";
private boolean pressed = false;
private int x;
private int y;
private int width;
private int height;
private Color currentColor, defaultColor, hoverColor, pressColor;
private Point mousePoint = new Point(0, 0);
private ButtonListener btnListener = null;
private Canvas canvasObject;
private BufferedImage image;
private BufferedImage darkImage;
private String actionCommand = "default";
private Collectable object;
private boolean enabled;
/*
* private CustomButton(Canvas canvasObject,JFrame frame) { this.x=100;
* this.y=100; this.width=100; this.height=100;
*
* canvasObject.addMouseListener(this); currentColor=new Color(255,255,255);
* defaultColor=new Color(255,255,255); hoverColor=new Color(255,255,255);
* pressColor=new Color(255,255,255); }
*/
public CustomButton(int x, int y, int width, int height, Canvas canvasObject) {
this.x = x;
this.y = y;
this.width = width;
this.height = height;
this.canvasObject = canvasObject;
canvasObject.addMouseListener(this);
currentColor = Color.GREEN;
currentColor = new Color(255, 255, 255);
defaultColor = new Color(255, 255, 255);
hoverColor = new Color(255, 255, 255);
pressColor = new Color(255, 255, 255);
enabled = true;
}
public CustomButton(int x, int y, int width, int height, Canvas canvasObject, BufferedImage image,
Collectable object) {
this.image = image;
this.darkImage = darkenImage(image);
this.x = x;
this.y = y;
this.width = width;
this.height = height;
canvasObject.addMouseListener(this);
currentColor = Color.GREEN;
currentColor = new Color(255, 255, 255);
defaultColor = new Color(255, 255, 255);
hoverColor = new Color(255, 255, 255);
pressColor = new Color(255, 255, 255);
this.canvasObject = canvasObject;
this.object = object;
enabled = true;
}
public void render(Graphics g) {
if (image == null) {
g.setColor(currentColor);
if (!pressed)
g.fillRect(this.x, this.y, width, height);
else
g.fill3DRect(this.x, this.y, width, height, true);
g.setColor(Color.BLACK);
g.drawString(text, this.x + 10, this.y + 15);
} else {
if (enabled) {
g.drawImage(image, x, y, width, height, null);
} else {
g.drawImage(darkImage, x, y, width, height, null);
}
}
}
public Rectangle getBounds() {
return new Rectangle(x, y, width, height);
}
public void tick() {
mousePoint = getMouseLocation();
changeColor();
}
private Point getMouseLocation() {
int x = 0;
int y = 0;
try {
x = (int) (canvasObject.getMousePosition().getX());
y = (int) (canvasObject.getMousePosition().getY());
} catch (NullPointerException nl) {
}
return new Point(x, y);
}
public void changeColor() {
if (!pressed) {
if (getBounds().contains(mousePoint))
currentColor = hoverColor;
else
currentColor = defaultColor;
} else {
currentColor = pressColor;
}
}
public void addButtonListener(ButtonListener btnListener) {
this.btnListener = btnListener;
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mouseClicked(MouseEvent e) {
if (enabled) {
if (btnListener != null) {
if (getBounds().contains(mousePoint)) {
ButtonID id = ButtonID.UNDETERMINABLE;
if (e.getButton() == MouseEvent.BUTTON1) id = ButtonID.LEFT;
if (e.getButton() == MouseEvent.BUTTON2) id = ButtonID.RIGHT;
btnListener.buttonClicked(new ButtonEvent(id, object, actionCommand));
}
}
}
}
public void mousePressed(MouseEvent e) {
if (getBounds().contains(mousePoint)) pressed = true;
}
public void mouseReleased(MouseEvent e) {
pressed = false;
}
public void setActionCommand(String actionCommand) {
this.actionCommand = actionCommand;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public void setDefaultColor(Color c) {
defaultColor = c;
}
public void setHoverColor(Color c) {
hoverColor = c;
}
public void setPressColor(Color c) {
pressColor = c;
}
public Collectable getObject() {
return object;
}
public void setObject(Collectable object) {
this.object = object;
}
public void destroy() {
canvasObject.removeMouseListener(this);
}
public void disable() {
enabled = false;
}
public void enable() {
enabled = true;
}
public boolean isEnabled() {
return enabled;
}
private BufferedImage darkenImage(BufferedImage image) {
int width = image.getWidth();
int height = image.getHeight();
image = deepCopy(image);
WritableRaster raster = image.getRaster();
for (int xx = 0; xx < width; xx++) {
for (int yy = 0; yy < height; yy++) {
int[] pixels = raster.getPixel(xx, yy, (int[]) null);
pixels[0] -= 50;
pixels[1] -= 50;
pixels[2] -= 50;
pixels[0] = Math.max(pixels[0], 0);
pixels[1] = Math.max(pixels[0], 0);
pixels[2] = Math.max(pixels[0], 0);
raster.setPixel(xx, yy, pixels);
}
}
return image;
}
private BufferedImage deepCopy(BufferedImage bi) {
ColorModel cm = bi.getColorModel();
boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
WritableRaster raster = bi.copyData(null);
return new BufferedImage(cm, raster, isAlphaPremultiplied, null);
}
}
正如你可能會從一個事件被髮送到ButtonListener
class.The ButtonListener
接口在包也宣告了mouseClicked()
方法見。
此按鈕繪製在畫布本身上。例如,在等級圖中,右下角有一個按鈕,點擊時會打開庫存。讓此按鈕被稱爲btn_INV
。
到現在爲止,我一直在通過鍵盤移動播放器的輸入。但是我打算將keyInput更改爲鼠標輸入,其中播放器將移動到用戶點擊的圖塊。
對於我必須做的一類,說MouseInput
實現MouseListener
。現在的問題是,當我點擊btn_INV
,不僅將按鈕生成一個事件,而且,因爲按鈕實際上是在畫布上繪製,MouseInput
班也會得到關於玩家想要移動的瓦片的事件。現在,我認爲當MouseInput
類獲得MouseEvent
時,它將檢查按鈕,因爲每當在畫布上點擊鼠標時,儘管它可能不會生成ButtonEvent
,但您可以從代碼中看到按鈕始終爲。但是,這是一種相當糟糕的方法,效率非常低。因此,我需要另一種方法。
注意:我想創建另一個畫布顯示HUD和btn_INV
和其他這樣的按鈕,但這並沒有真正解決問題,繞過它。
謝謝你的時間和建議。我會改變我的a =程序,因爲你所提到的是有效的。但我要說的一件事是'btn_INV'只改變'GameState',所以它並不重要如果我在主遊戲線程上執行某些其他更新時調用該方法。然而,對於剛剛創建一些「ActionCommands」的'MouseListener'線程而言,這是一個很好的觀點,我會盡力實現它。謝謝。 –