I draw some ghosts: 

Later you want them in an array and for-loop over them.


Greetings, Chrisir   

1. PacMan pac;
2. Fantasma fantasma;
3. Fantasma fantasma1;
4. Fantasma fantasma2;
5. Fantasma fantasma3;
6. Punteggio punteggio;
7. int n;
8. void setup() {
9.   size(600, 600);
10.   background(0);
11.   smooth();
12.   noStroke();
13.   pac = new PacMan(width/2, height/2);
14.   //
15.   fantasma = new Fantasma();
16.   fantasma1 = new Fantasma();
17.   fantasma2 = new Fantasma();
18.   fantasma3 = new Fantasma();
19.   //
20.   punteggio = new Punteggio();
21. }
22. void draw() {
23.   background(0);
24.   pac.draw();
25.   //
26.   // draw fantasma
27.   fantasma.draw();
28.   fantasma1.draw();
29.   fantasma2.draw();
30.   fantasma3.draw();
31.   //
32.   mangiaFantasma();
33.   punteggio.mostraPunteggio();
34. }
35. // --------------------------------------------------------------
36. void mangiaFantasma() {
37.   float distance;
38.   distance = sqrt(pow(pac.x-fantasma.x, 2));
39.   if (distance < 20) {
40.     fantasma = new Fantasma();
41.     rinnovaPunteggio();
42.   }
43. }
44. void rinnovaPunteggio() {
45.   n = int(random(1, 4));
46.   println(n);
47.   if (n==1) {
48.     punteggio.punti= punteggio.punti+50;
49.   }
50.   if (n==2) {
51.     punteggio.punti= punteggio.punti+100;
52.   }
53.   if (n==3) {
54.     punteggio.punti= punteggio.punti+150;
55.   }
56.   if (n==4) {
57.     punteggio.punti= punteggio.punti+200;
58.   }
59. }
60. // ======================================================
61. class Fantasma {
62.   int x=300;
63.   int y=200;
64.   PImage [] fantasma = new PImage [4];
65. 
    
66.   Fantasma() {
67.     x=int(random(width));
68.     y=int(random(height));
69.     for (int i=0; i<4; i++) {
70.       fantasma[i] = loadImage( "ghost" + i + ".jpeg");
71.     }
72.   }
73.   void draw() {
74.     image(fantasma[(n)], x, y, 45, 45); // y or 280 ???
    
75.     fill(255);
76.     // text("fantasma", x, y, 45, 45);
77.   }
78. }
79. // ======================================================
80. class PacMan {
81.   int x;
82.   int y;
83.   int d=40;
84.   int speed=20;
85.   color colore=#FFE203;
86.   PacMan(int x_pos, int y_pos) {
87.     x=x_pos;
88.     y=y_pos;
89.     frameRate(4);
90.   }
91.   void draw() {
92.     x=x+speed;
93.     fill(colore);
94.     noStroke();
95.     arc(x, height/2, d, d, PI/4, 7*PI/4);
96.     if (x>width) {
97.       speed=speed*(-1);
98.     };
99.     if (x<0) {
100.       speed=speed*(-1);
101.     };
102.     if (speed<0) {
103.       background(0);
104.       arc(x, height/2, d, d, -3*PI/4, 3*PI/4);
105.     };
106.     if (frameCount%2==0) {
107.       arc(x, height/2, d, d, -PI/4-.1, PI/4+.1);
108.       if (speed>0) {
109.         stroke(0);
110.         line ( x, height/2, x+d, height/2 );
111.       }
112.     }
113.     else {
114.       arc(x, height/2, d, d, 3*PI/4-.1, 5*PI/4+.1);
115.       if (speed<0) {
116.         stroke(0);
117.         line ( x, height/2, x-d, height/2 );
118.       }
119.     }
120.     // eye
121.     fill(0);
122.     ellipse(x+1, 290, 5, 5);
123.   }
124. }
125. // ======================================================
126. class Punteggio {
127.   PFont font;
128.   int punti;
129.   int n;
130.   Punteggio() {
131.     punti = 0;
132.     font = createFont("CenturyGothic-48.vlw", 14);
133.     textFont(font);
134.   }
135.   void mostraPunteggio() {
136.     fill(255);
137.     text("Punti accumulati:"+punti, 2, 40);
138.   }
139. }
140. // ======================================================
141. //

thank you so much, in the meantime i've drawn better the pacman but i still don't manage to make the ghosts array properly, could you tell me how do i put the four ghosts in the for-loop?

hello,

sure. Fantasma is an object. You want an array of this object.
Let's call the array fantasmas (plural?).
You say (before setup() instead of the old line):

1. Fantasma[] fantasmas = new Fantasma [4];

Gives you an array with four ghosts with the numbers 0..3.

Now in setup()

1.   fantasma[0] = new Fantasma();
2.   fantasma[1] = new Fantasma();
3.   fantasma[2] = new Fantasma();
4.   fantasma[3] = new Fantasma();

in theory you could them give different colors or so.

In draw() instead of

1.   // draw fantasma
2.   fantasma.draw();
3.   fantasma1.draw();
4.   fantasma2.draw();
5.   fantasma3.draw();
6.   //

Please note: that is all outside the class Fantasma. The class treats only each ghost, in the array outside the class you have 4 ghosts.

Has each ghosts 4 images? Or why did you put

1.   PImage [] fantasma = new PImage [4];

?

Greetings, Chrisir