PA0/PA5movedot.java at master · CS-4620/PA0 · GitHub

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

/**
 * PA5movedot.java
 *
 * Local vars keep track of where dot is so can move it around with DPad.
 * Also have a local var that stores a tone value and then uses that
 * to call toneStart when a button is pressed.
 *
 * MMS, 2/2/11
 */

import meggy.Meggy;

class PA5movedot {

    public static void main(String[] whatever){
        new Dot().run();
    }
}

class Dot {
    byte curr_x;
    byte curr_y;
    Meggy.Color dotcolor;

    public void run() {
        Meggy.Tone localvar;
        localvar = Meggy.Tone.C3;

        // initialize color
        dotcolor = Meggy.Color.ORANGE;

        // initialize the x and y coordinates of the dot
        curr_x = (byte)3;
        curr_y = (byte)6;

        // and then let the user move it around with the Dpad
        while (true) {
            if (Meggy.checkButton(Meggy.Button.Up)) {
                this.movedot(curr_x, (byte)(curr_y+(byte)1));
                Meggy.toneStart(localvar, 50);
            } else {}
            if (Meggy.checkButton(Meggy.Button.Down)) {
                this.movedot(curr_x, (byte)(curr_y-(byte)1));
                Meggy.toneStart(localvar, 50);
            } else {}
            if (Meggy.checkButton(Meggy.Button.Left)) {
                this.movedot((byte)(curr_x-(byte)1), curr_y);
                Meggy.toneStart(localvar, 50);
            } else {}
            if (Meggy.checkButton(Meggy.Button.Right)) {
                this.movedot((byte)(curr_x+(byte)1), curr_y);
                Meggy.toneStart(localvar, 50);
            } else {}

            Meggy.delay(100);
        }
    }

    public void movedot(byte x, byte y) {
        if (this.inBounds(x, y)) {
            // darken the current location of the dot
            Meggy.setPixel(curr_x, curr_y, Meggy.Color.DARK);

            // light up the new location
            Meggy.setPixel(x, y, dotcolor);

            // update the dot's current location
            curr_x = x;
            curr_y = y;

        } else {}

    }

    public boolean inBounds(byte x, byte y) {
        return ((byte)(0-1) < x) && (x < (byte)8) && ((byte)(0-1) < y) && (y < (byte)8);
    }

}