1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
| /* ----------------------------------------------------------------------------------
* BaseFrame.java
* Mr. McKenzie
* Nov. 13 2009
* --------------
* Revised Dec 14 2022
* -----------------------------------------------------------------------------------
* BaseFrame is designed to take a lot of the complexity out of doing graphics in Java.
* The idea is, that rather inhetiting from JFrame directly we place a lot of common
* code in BaseFrame then inherit from BaseFrame. BaseFrame includes:
*
* - A Timer, with a 20 ms delay that calls move() and repaint()
* - MouseMotionListener, MouseListener, KeyListener
* mx,my,mb,keys- these fields are protected so you have direct access to them from the
* inherited class.
* - move() - this is a hook that you can use to update the state of your game
* - draw() - repaint() calls paint(), this calls the JPanel paint(), which calls draw()
* - The JPanel is used because it automaticly double-buffered. If we draw
* directly to the Frame it will flicker. We call the draw method so that
* when we extend the BaseFrame we can override this method to handle
* our drawing.
-------------------------------------------------------------------------------------*/
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
class BaseFrame extends JFrame implements MouseMotionListener, MouseListener, KeyListener, ActionListener{
protected int mx,my,mb;
protected boolean []keys;
protected Image back,dbImage;
protected Graphics dbg;
protected String col="";
protected GamePane pane;
protected Timer timer;
final protected int LEFT = 37;
final protected int UP = 38;
final protected int RIGHT = 39;
final protected int DOWN = 40;
final protected int SPACE = 32;
final protected int ESC = 27;
public BaseFrame(String t, int w, int h) {
super(t);
pane = new GamePane(this);
pane.setPreferredSize(new Dimension(w, h));
addKeyListener(this);
addMouseListener (this);
addMouseMotionListener(this);
keys = new boolean[2000];
add(pane);
pack();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
timer = new Timer(20, this);
timer.start();
}
private void updateMouse(MouseEvent e){
mx = e.getX();
my = e.getY();
}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {
updateMouse(e);
mb = 0;
}
public void mouseClicked(MouseEvent e){
updateMouse(e);
mb = 0;
}
public void mouseDragged(MouseEvent e){
updateMouse(e);
}
public void mouseMoved(MouseEvent e){
updateMouse(e);
}
public void mousePressed(MouseEvent e){
updateMouse(e);
mb = e.getButton();
}
public void keyTyped(KeyEvent e) {}
public void keyPressed(KeyEvent e) {
keys[e.getKeyCode()] = true;
}
public void keyReleased(KeyEvent e) {
keys[e.getKeyCode()] = false;
}
// should be overloaded
public void move(){
}
public void draw(Graphics g){
}
@Override
public void actionPerformed(ActionEvent e){
move(); // never draw in move
repaint(); // only draw
}
class GamePane extends JPanel{
BaseFrame main;
public GamePane(BaseFrame m){
main = m;
}
public void paint(Graphics g){
main.draw(g);
}
}
}
|
