Like loadImage() and other methods that load data, the loadFont() function should not be used inside draw(), because it will slow down the sketch considerably, as the font will be re-loaded from the disk (or network) on each frame.

1. int number = 0;
2. 
   
3. PImage img;
4. PFont font;
5. 
   
6. void setup() {
7.   size (1000, 800);
8.   smooth();
9.   println(number);
10. 
    
11. //  font = loadFont("Times-Roman-22.vlw");
12. //  textFont(font);
13. //  img = loadImage ("white.jpg");
14. }
15. 
    
16. void draw() {
17.   background (255);
18. 
    
19.   switch(number) {
20. 
    
21.   case 0:
22.     fill(0);
23.     text("It's the year 2014, you're an average 24 year old living in a small town", 100, 50);
24.     text("in Ohio. You find yourself in a low wage job, living in a small apartment with", 100, 100);
25.     text("your fiance. You have had little education past high school and your life has become", 100, 150);
26.     text("rather dull. You have a tradition of buying a lottery ticket every week and it just", 100, 200);
27.     text("so happens to be your lucky day! You’ve won  $15 million dollars! What do you do next?", 100, 250);
28.     text("To continue click the right arrow key.", 100, 400);
29.     if (key == CODED) {
30.       if (keyCode == RIGHT) {
31.         number = 1;
32.       }
33.     }
34.     break;
35. 
    
36.   case 1:
37. //      image (img, 0, 0);
38.     fill(0);
39.     text("You first wonder if there's any need to keep your job. Do you quit? Or Stay?", 150, 50);
40.     text("To quit click the left arrow key. To keep your job click the right arrow key.", 150, 700);
41.     if (key == CODED) {
42.       if (keyCode == LEFT) {
43.         number = 2;
44.       }
45.       if (keyCode == RIGHT) {
46.         number = 3;
47.       }
48.     }
49.     break;
50.   }
51. }

1. int number = 0;
2.  
3. PImage img;
4. PFont font;
5.  
6. int[][] numbers =
7. {
8.   { 0, 1 }, // Scene 0, left = remain in place, right = go to 1
9.   { 2, 3 }, // Scene 1, left = go to 2, right = go to 3
10.   { 1, 3 }, // Scene 2 left = go back to 1, right = go to 3
11.   { 0, 3 }, // Scene 3 left = go back to 0, right = remain in place
12.   // Etc.
13. };
14.  
15. void setup() {
16.   size(1000, 800);
17.   smooth();
18.   println(number);
19. //  font = loadFont("Times-Roman-22.vlw");
20. //  textFont(font);
21. //  img = loadImage ("white.jpg");
22. }
23.  
24. void draw() {
25.   background (255);
26.  
27.   switch (number)
28.   {
29.   case 0: scene0(); break;
30.   case 1: scene1(); break;
31.   case 2: scene2(); break;
32.   case 3: scene3(); break; // Etc.
33.   }
34. }
35.  
36. void keyPressed()
37. {
38.   if (key == CODED)
39.   {
40.     if (keyCode == LEFT)
41.     {
42.       number = numbers[number][0];
43.     }
44.     else if (keyCode == RIGHT)
45.     {
46.       number = numbers[number][1];
47.     }
48.     println(number + " " + keyCode);
49.   }
50. }
51.  
52. void scene0()
53. {
54.   fill(0);
55.   text("It's the year 2014, you're an average 24 year old living in a small town", 100, 50);
56.   text("in Ohio. You find yourself in a low wage job, living in a small apartment with", 100, 100);
57.   text("your fiance. You have had little education past high school and your life has become", 100, 150);
58.   text("rather dull. You have a tradition of buying a lottery ticket every week and it just", 100, 200);
59.   text("so happens to be your lucky day! You’ve won  $15 million dollars! What do you do next?", 100, 250);
60.   text("To continue click the right arrow key.", 100, 400);
61. }
62. void scene1()
63. {
64. //  image (img, 0, 0);
65.   fill(0);
66.   text("You first wonder if there's any need to keep your job. Do you quit? Or Stay?", 150, 50);
67.   text("To quit click the left arrow key. To keep your job click the right arrow key.", 150, 700);
68. }
69.  
70. void scene2()
71. {
72.   fill(0);
73.   text("Scene 2.", 150, 50);
74. }
75.  
76. void scene3()
77. {
78.   fill(0);
79.   text("Scene 3.", 150, 100);
80. }