2. 
   
3. import processing.video.*;
4. Movie myMovie;
5. 
   
6. void setup() {
7.   size(200, 200);
8.   myMovie = new Movie(this, "http://www.youtube.com/watch?v=VZxK58tPU4I&feature=related");
9.   myMovie.loop();
10. }
11. 
    
12. void draw() {
13.   tint(255, 20);
14.   image(myMovie, mouseX, mouseY);
15. }
16. 
    
17. void movieEvent(Movie m) {
18.   m.read();
19. }

2. 
   
3. 
   
4. /*William Wang
5. creates a shooting game.
6. Instructions:
7. Press up and down arrows to move the ship up and down. 
8. The number of enemies is displayed in the bottom right corner. 
9. You laser will get stronger every level and so will the enemies. 
10. At level 10, there will be a boss.
11. Every time an enemy goes off screen, you will lose a life, if it is a boss, you lose five life. 
12. You have 20 lives. 
13. Lasers must recharge so you can't use them for too long. To recharge, press another key.
14. Hold space bar to shoot forward.
15. */
16. 
    
17. PImage bg;
18. int bossHealth=888;
19. int bg2=0;
20.   int death;
21. int life=20;
22. float playerYpos=200;
23. int playerXpos=30;
24. boolean menu=true;
25. boolean instruct=false;
26. int laserCounter=400;
27. PFont font;
28. float laserCharge=200;
29. int enemiesLeft;
30. int cannonCharge=4;
31.   int score;
32.   Enemy[]Enemies=new Enemy[165];
33. void setup(){
34.   bg=loadImage("java final background.jpg");
35.   size(800,400);
36.   smooth();
37.     font=loadFont("Corbel-Bold-48.vlw");
38. 
    
39.       for (int i=0;i<3;i++){
40.     Enemies[i]=new Enemy(random(800,1000),random(60,height-60), 10, 1);
41.     }
42.           for (int i=3;i<9;i++){
43.     Enemies[i]=new Enemy(random(800,1000)+1200,random(60,height-60),20, 1);
44.     }
45.       for (int i=9;i<18;i++){
46.     Enemies[i]=new Enemy(random(800,1000)+2400,random(60,height-60), 30, 1);
47.     }      
48.     for (int i=18;i<30;i++){
49.     Enemies[i]=new Enemy(random(800,1000)+3600,random(60,height-60), 42, 1);
50.     }
51.           for (int i=30;i<45;i++){
52.     Enemies[i]=new Enemy(random(800,1000)+4800,random(60,height-60), 60, 1);
53.     }      
54.     for (int i=45;i<63;i++){
55.     Enemies[i]=new Enemy(random(800,1000)+6000,random(60,height-60), 31, 1);
56.     }
57.           for (int i=63;i<84;i++){
58.     Enemies[i]=new Enemy(random(800,1000)+7200,random(60,height-60),100, 1);
59.     }
60.       for (int i=84;i<108;i++){
61.     Enemies[i]=new Enemy(random(800,1000)+8400,random(60,height-60), 120, 1);
62.     }      
63.     for (int i=108;i<135;i++){
64.     Enemies[i]=new Enemy(random(800,1000)+9600,random(60,height-60), 140, 1);
65.     }
66.           for (int i=135;i<165;i++){
67.     Enemies[i]=new Enemy(random(800,1000)+10800,random(60,height-60), 160, 1);
68.     }
69. 
    
70. 
    
71. }
72. Boss boss;
73. void draw(){
74. 
    
75. //  println(death);
76. 
    
77. background(255);
78.   fill(255,0,0);
79.   smooth();
80.   if(menu&&!instruct){
81.     textFont(font,70);
82.     text("Play Game",250,100);
83.     text("Instruct",290,300);
84.   
85.     if(mousePressed&&mouseX>250&&mouseX<580&&mouseY>30&&mouseY<100){
86.   menu=false;
87. }
88.     if(mousePressed&&mouseX>290&&mouseX<540&&mouseY>230&&mouseY<300){
89. instruct=true;
90.     }
91.   }
92.     if(menu&&instruct){
93.       background(255);
94.       textSize(27);
95.       String s="Press up and down arrows to move the ship up and down. The number of enemies is displayed in the bottom right corner. You laser will get stronger every level and so will the enemies. At level 10, there will be a boss. Every time an enemy goes off screen, you will lose a life. You have 20 lives. Lasers must recharge so you can't use them for too long. There are three ways to shoot. Hold space bar to shoot forward or press n for blast cannon. Blast cannons are extremely powerful but you only have four.";
96.       text(s,50,20,700,375);
97.       String back="Back";
98.       text(back,375,375);
99.       if(mousePressed&&mouseX>375&&mouseX<430&&mouseY<375&&mouseY>350){
100.         instruct=false;
101.       }
102.   }
103.   if(!menu&&!instruct){ 
104.     if(life>=0){
105.   background(bg);
106.           meters();
107.   for (int i=0;i<165;i++){
108.     Enemies[i].display();
109.     Enemies[i].move();
110.         Enemies[i].death();
111. boss=new Boss(11350);
112. boss.display();
113.     player();
114.   }
115.   }
116.   if(life<=0){
117.     background(bg2);
118.     bg2+=5;
119.     textSize(80);
120.     fill(255,0,0);
121.     text("Game Over",80,150);
122.     text("Play Again",100,280);
123.   }
124.   if(bossHealth<=0&&life>0){
125.     text("You Win",80,150);
126.     text("Play Again",100,280);
127.   }
128.   }
129. }
130. class Enemy{
131.   float xpos;
132.   float ypos;
133.   float health;
134. 
     
135.   float speed;
136.   Enemy(float tempXpos, float tempYpos, int tempHealth, float tempSpeed){
137.     xpos= tempXpos;
138.     ypos= tempYpos;
139.     health= tempHealth;
140.     speed= tempSpeed;
141.   }
142.   void display(){
143. 
     
144.     if(health>0){
145. stroke(255,0,94);
146.     fill(139,30,30);
147.     beginShape();
148.     vertex(xpos-16,ypos);
149.     vertex(xpos,ypos-8);
150.     vertex(xpos+8,ypos-16);
151.     vertex(xpos+4,ypos);
152.     vertex(xpos+8,ypos+16);
153.     vertex(xpos,ypos+8);
154.     endShape(CLOSE);
155.     }
156.         if(keyPressed){
157.       if(key==' '){
158.       if(xpos-16<width&&laserCharge>0&&playerYpos>=ypos-16&&playerYpos<=ypos+16){
159.             health=constrain (health,-1,160);
160.         if(death<18){
161.         health-=1;
162.         }
163.         if(death>17&&death<63){
164.           health-=3;
165.         }
166.         if(death>62&&death<115){
167.           health-=4;
168.         }
169.         if(death>114){
170.           health-=5;
171.         }
172.       }
173. }
174.   }
175.   }
176.   void death(){
177.     if(health==0){
178.       death+=1;
179.     }
180.   }
181.   void move(){
182.     if(health>0){
183.     xpos=xpos-speed;
184.     if(xpos+2<0){
185.       life-=1;
186.       score-=50;
187.       xpos=width;
188.       xpos+=speed;
189.     }
190.     }
191.     }
192.   }
193. 
     
194. 
     
195. 
     
196. void player(){
197. 
     
198.     if(key!=' '){
199.             laserCharge+=0.05;
200.     }
201.   
202. laserCharge=constrain (laserCharge,0,200);
203. 
     
204.     if(keyPressed){
205.       if(keyCode==UP){
206.         playerYpos-=0.02;
207.       }
208.       if(keyCode==DOWN){
209.         playerYpos+=0.02;
210.       }
211.       if(key==' '){
212.         if(laserCharge>1){
213.         fill(255,0,0);
214.         stroke(255,0,0);
215.         line(playerXpos,playerYpos,width,playerYpos);
216. 
     
217.         
218.         laserCharge-=0.03;
219.         }
220.       }
221.       }
222.     
223. 
     
224. 
     
225.   beginShape();
226.     fill(0,30,214);
227.     stroke(0,236,235);
228.     vertex(playerXpos+16,playerYpos);
229.     vertex(playerXpos,playerYpos+8);
230.     vertex(playerXpos-8,playerYpos+16);
231.     vertex(playerXpos-4,playerYpos);
232.     vertex(playerXpos-8,playerYpos-16);
233.     vertex(playerXpos,playerYpos-8);
234.     endShape(CLOSE);
235. }
236. void meters(){
237.   //laserCharge
238. score=death*100;
239. enemiesLeft=166-death;
240. fill(0);
241.   text("LaserCharge:",170,350);
242.   rect(350,325,laserCharge,40);
243.   textSize(30);
244.     fill(255,0,0);
245.   text("Score:" + score,0,350);
246.   fill(0,255,255);
247.   text("Enemies Left:" +enemiesLeft ,550,350);
248.   
249. }
250. class Boss{
251.   int xpos2;
252.  Boss(int tempXpos2){
253. xpos2=tempXpos2;
254.   }
255. 
     
256.   void display(){
257.      float ypos2=random(height);
258.     println(xpos2);
259.       xpos2=xpos2-1;
260. fill(255);
261.   if(bossHealth>0){
262.         beginShape();
263.     vertex(xpos2-24,ypos2);
264. 
     
265.     vertex(xpos2+12,ypos2-24);
266. vertex(xpos2+6,ypos2);
267.     vertex(xpos2+12,ypos2+24);
268. 
     
269.     endShape(CLOSE);
270.     fill(0);
271. triangle(xpos2+4,ypos2-7,xpos2+4,ypos2+7,xpos2-17,ypos2);
272. fill(0,255,255);
273.   ellipse(xpos2+4,ypos2+7,5,7);
274.     ellipse(xpos2+4,ypos2-7,5,7);
275.       ellipse(xpos2-17,ypos2,5,7);
276.         if(keyPressed){
277.       if(key==' '){
278.       if(xpos2-16<width&&laserCharge>0&&playerYpos>=ypos2-16&&playerYpos<=ypos2+16){
279.             bossHealth=constrain (bossHealth,-1,160);
280. bossHealth-=5;
281.         }
282.       }
283. }
284. }
285. }
286. }

2. /*William Wang
3. creates a shooting game.
4. Instructions:
5. Press up and down arrows to move the ship up and down. 
6. The number of enemies is displayed in the bottom right corner. 
7. You laser will get stronger every level and so will the enemies. 
8. At level 10, there will be a boss.
9. Every time an enemy goes off screen, you will lose a life, if it is a boss, you lose five life. 
10. You have 20 lives. 
11. Lasers must recharge so you can't use them for too long. To recharge, press another key.
12. Hold space bar to shoot forward.
13. */
14. PImage bg;
15. int bossHealth=888;
16. int bg2=0;
17.   int death;
18. int life=20;
19. float playerYpos=200;
20. int playerXpos=30;
21. boolean menu=true;
22. boolean instruct=false;
23. int laserCounter=400;
24. PFont font;
25. float laserCharge=200;
26. int enemiesLeft;
27. int cannonCharge=4;
28.   int score;
29.   Enemy[]Enemies=new Enemy[165];
30. void setup(){
31.   bg=loadImage("java final background.jpg");
32.   size(800,400,OPENGL);
33.   smooth();
34.     font=loadFont("Corbel-Bold-48.vlw");
35. 
    
36.       for (int i=0;i<3;i++){
37.     Enemies[i]=new Enemy(random(800,1000),random(60,height-60), 10, 1);
38.     }
39.           for (int i=3;i<9;i++){
40.     Enemies[i]=new Enemy(random(800,1000)+1200,random(60,height-60),20, 1);
41.     }
42.       for (int i=9;i<18;i++){
43.     Enemies[i]=new Enemy(random(800,1000)+2400,random(60,height-60), 30, 1);
44.     }      
45.     for (int i=18;i<30;i++){
46.     Enemies[i]=new Enemy(random(800,1000)+3600,random(60,height-60), 42, 1);
47.     }
48.           for (int i=30;i<45;i++){
49.     Enemies[i]=new Enemy(random(800,1000)+4800,random(60,height-60), 60, 1);
50.     }      
51.     for (int i=45;i<63;i++){
52.     Enemies[i]=new Enemy(random(800,1000)+6000,random(60,height-60), 31, 1);
53.     }
54.           for (int i=63;i<84;i++){
55.     Enemies[i]=new Enemy(random(800,1000)+7200,random(60,height-60),100, 1);
56.     }
57.       for (int i=84;i<108;i++){
58.     Enemies[i]=new Enemy(random(800,1000)+8400,random(60,height-60), 120, 1);
59.     }      
60.     for (int i=108;i<135;i++){
61.     Enemies[i]=new Enemy(random(800,1000)+9600,random(60,height-60), 140, 1);
62.     }
63.           for (int i=135;i<165;i++){
64.     Enemies[i]=new Enemy(random(800,1000)+10800,random(60,height-60), 160, 1);
65.     }
66. 
    
67. 
    
68. }
69. 
    
70. void draw(){
71. 
    
72. //  println(death);
73. 
    
74. 
    
75.   fill(255,0,0);
76.   smooth();
77.   if(menu&&!instruct){
78.     textFont(font,70);
79.     text("Play Game",250,100);
80.     text("Instruct",290,300);
81.   
82.     if(mousePressed&&mouseX>250&&mouseX<580&&mouseY>30&&mouseY<100){
83.   menu=false;
84. }
85.     if(mousePressed&&mouseX>290&&mouseX<540&&mouseY>230&&mouseY<300){
86. instruct=true;
87.     }
88.   }
89.     if(menu&&instruct){
90.       textSize(27);
91.       String s="Press up and down arrows to move the ship up and down. The number of enemies is displayed in the bottom right corner. You laser will get stronger every level and so will the enemies. At level 10, there will be a boss. Every time an enemy goes off screen, you will lose a life. You have 20 lives. Lasers must recharge so you can't use them for too long. There are three ways to shoot. Hold space bar to shoot forward or press n for blast cannon. Blast cannons are extremely powerful but you only have four.";
92.       text(s,50,20,700,375);
93.       String back="Back";
94.       text(back,375,375);
95.       if(mousePressed&&mouseX>375&&mouseX<430&&mouseY<375&&mouseY>350){
96.         instruct=false;
97.       }
98.   }
99.   if(!menu&&!instruct){ 
100.     if(life>=0){
101.   background(bg);
102.           meters();
103.   for (int i=0;i<165;i++){
104.     Enemies[i].display();
105.     Enemies[i].move();
106.         Enemies[i].death();
107.     player();
108.   }
109.   }
110.   if(life<=0){
111.     background(bg2);
112.     bg2+=5;
113.     textSize(80);
114.     fill(255,0,0);
115.     text("Game Over",80,150);
116.     text("Play Again",100,280);
117.   }
118.   if(bossHealth<=0&&life>0){
119.     text("You Win",80,150);
120.     text("Play Again",100,280);
121.   }
122.   }
123. }
124. class Enemy{
125.   float xpos;
126.   float ypos;
127.   float health;
128. 
     
129.   float speed;
130.   Enemy(float tempXpos, float tempYpos, int tempHealth, float tempSpeed){
131.     xpos= tempXpos;
132.     ypos= tempYpos;
133.     health= tempHealth;
134.     speed= tempSpeed;
135.   }
136.   void display(){
137. 
     
138.     if(health>0){
139. stroke(255,0,94);
140.     fill(139,30,30);
141.     beginShape();
142.     vertex(xpos-16,ypos);
143.     vertex(xpos,ypos-8);
144.     vertex(xpos+8,ypos-16);
145.     vertex(xpos+4,ypos);
146.     vertex(xpos+8,ypos+16);
147.     vertex(xpos,ypos+8);
148.     endShape(CLOSE);
149.     }
150.         if(keyPressed){
151.       if(key==' '){
152.       if(xpos-16<width&&laserCharge>0&&playerYpos>=ypos-16&&playerYpos<=ypos+16){
153.             health=constrain (health,-1,160);
154.         if(death<18){
155.         health-=1;
156.         }
157.         if(death>17&&death<63){
158.           health-=3;
159.         }
160.         if(death>62&&death<115){
161.           health-=4;
162.         }
163.         if(death>114){
164.           health-=5;
165.         }
166.       }
167. }
168.   }
169.   }
170.   void death(){
171.     if(health==0){
172.       death+=1;
173.     }
174.   }
175.   void move(){
176.     if(health>0){
177.     xpos=xpos-speed;
178.     if(xpos+2<0){
179.       life-=1;
180.       score-=50;
181.       xpos=width;
182.       xpos+=speed;
183.     }
184.     }
185.     }
186.   }
187. 
     
188. 
     
189. 
     
190. void player(){
191. 
     
192.     if(key!=' '){
193.             laserCharge+=0.05;
194.     }
195.   
196. laserCharge=constrain (laserCharge,0,200);
197. 
     
198.     if(keyPressed){
199.       if(keyCode==UP){
200.         playerYpos-=0.02;
201.       }
202.       if(keyCode==DOWN){
203.         playerYpos+=0.02;
204.       }
205.       if(key==' '){
206.         if(laserCharge>1){
207.         fill(255,0,0);
208.         stroke(255,0,0);
209.         line(playerXpos,playerYpos,width,playerYpos);
210. 
     
211.         
212.         laserCharge-=0.03;
213.         }
214.       }
215.       }
216.     
217. 
     
218. 
     
219.   beginShape();
220.     fill(0,30,214);
221.     stroke(0,236,235);
222.     vertex(playerXpos+16,playerYpos);
223.     vertex(playerXpos,playerYpos+8);
224.     vertex(playerXpos-8,playerYpos+16);
225.     vertex(playerXpos-4,playerYpos);
226.     vertex(playerXpos-8,playerYpos-16);
227.     vertex(playerXpos,playerYpos-8);
228.     endShape(CLOSE);
229. }
230. void meters(){
231.   //laserCharge
232. score=death*100;
233. enemiesLeft=166-death;
234. fill(0);
235.   text("LaserCharge:",170,350);
236.   rect(350,325,laserCharge,40);
237.   textSize(30);
238.     fill(255,0,0);
239.   text("Score:" + score,0,350);
240.   fill(0,255,255);
241.   text("Enemies Left:" +enemiesLeft ,550,350);
242.   
243. }
244. void boss(){
245.   if(bossHealth>0){
246.     lights();
247.     rotateX(100);
248.     rotateY(50);
249. sphere(11100,200, 50);
250.   }
251. }

Now there is an issue with the scoring, the levels(still can't get them to work), the laser timer(constrain doesn't work), and the number of enemies left per level.

Thanks again!

2. /*William Wang
3. creates a shooting game.
4. Instructions:
5. Press up and down arrows to move the ship up and down. 
6. The number of enemies is displayed in the bottom right corner. 
7. You laser will get stronger every level and so will the enemies. 
8. At level 10, there will be a boss. 
9. Every time an enemy goes off screen, you will lose a life. 
10. You have 20 lives. 
11. Lasers must recharge so you can't use them for too long. 
12. There are three ways to shoot. 
13. Hold space bar to shoot forward or press n for blast cannon. 
14. Blast cannons are extremely powerful but you only have four.
15. */
16.   int score;
17.   int death;
18. int life=20;
19. int level=1;
20. float playerYpos=200;
21. int playerXpos=30;
22. boolean menu=true;
23. boolean instruct=false;
24. int laserCounter=400;
25. PFont font;
26. float laserCharge=200;
27. Enemy[]Enemies=new Enemy[level*3];
28. void setup(){
29.   size(800,400);
30.   smooth();
31.     font=loadFont("Corbel-Bold-48.vlw");
32.     for (int i=0;i<Enemies.length;i++){
33.     Enemies[i]=new Enemy(random(800,1000),random(60,height-60), level*10, 3);
34.     }
35. 
    
36. 
    
37. }
38. void draw(){
39.   delay(100);
40.   println(laserCharge);
41.         background(255);
42. 
    
43.   fill(255,0,0);
44. 
    
45.   if(menu&&!instruct){
46.     textFont(font,70);
47.     text("Play Game",250,100);
48.     text("Instruct",290,300);
49.   
50.     if(mousePressed&&mouseX>250&&mouseX<580&&mouseY>30&&mouseY<100){
51.   menu=false;
52. }
53.     if(mousePressed&&mouseX>290&&mouseX<540&&mouseY>230&&mouseY<300){
54. instruct=true;
55.     }
56.   }
57.     if(menu&&instruct){
58.       textSize(27);
59.       String s="Press up and down arrows to move the ship up and down. The number of enemies is displayed in the bottom right corner. You laser will get stronger every level and so will the enemies. At level 10, there will be a boss. Every time an enemy goes off screen, you will lose a life. You have 20 lives. Lasers must recharge so you can't use them for too long. There are three ways to shoot. Hold space bar to shoot forward or press n for blast cannon. Blast cannons are extremely powerful but you only have four.";
60.       text(s,50,20,700,375);
61.       String back="Back";
62.       text(back,375,375);
63.       if(mousePressed&&mouseX>375&&mouseX<430&&mouseY<375&&mouseY>350){
64.         instruct=false;
65.       }
66.   }
67.   if(!menu&&!instruct){ 
68.     if(life>=0){
69.   background(255);
70.           meters();
71.   for (int i=0;i<Enemies.length;i++){
72.     Enemies[i].display();
73.     Enemies[i].move();
74.     player();
75.   }
76.   }
77.   }
78. }
79. class Enemy{
80.   float xpos;
81.   float ypos;
82.   int health;
83.   float speed;
84.   Enemy(float tempXpos, float tempYpos, int tempHealth, float tempSpeed){
85.     xpos= tempXpos;
86.     ypos= tempYpos;
87.     health= tempHealth;
88.     speed= tempSpeed;
89.   }
90.   void display(){
91.     if(health>0){
92.     stroke(196,20,20);
93.     fill(139,30,30);
94.     beginShape();
95.     vertex(xpos-16,ypos);
96.     vertex(xpos,ypos-8);
97.     vertex(xpos+8,ypos-16);
98.     vertex(xpos+4,ypos);
99.     vertex(xpos+8,ypos+16);
100.     vertex(xpos,ypos+8);
101.     endShape(CLOSE);
102.     }
103.         if(keyPressed){
104.       if(key==' '){
105.       if(laserCharge>0&&playerYpos>=ypos-16&&playerYpos<=ypos+16){
106.         health-=1;
107.       }
108. }
109. if(key=='n'){
110.   health-=100;
111.     }
112.   }
113.   }
114.   void score(){
115.     if(health==0){
116.       score+=100;
117.       death+=1;
118.     }
119.     if(death==level*3){
120.       level+=1;
121.       death=0;
122.     }
123.   }
124.   void move(){
125.     xpos=xpos-speed;
126.     if(xpos+2<0){
127.       life-=1;
128.       xpos=width;
129.       xpos+=speed;
130.     }
131.   }
132. 
     
133. }
134. 
     
135. void player(){
136. 
     
137. constrain (laserCharge,0,200);
138.     laserCharge+=1;
139.     if(keyPressed){
140.       if(keyCode==UP){
141.         playerYpos-=2;
142.       }
143.       if(keyCode==DOWN){
144.         playerYpos+=2;
145.       }
146.       if(key==' '){
147.         if(laserCharge>0){
148.         fill(255,0,0);
149.         stroke(255,0,0);
150.         for(int i=playerXpos; i<=width; i+=8){
151.         ellipse(i,playerYpos,7,7);
152.         laserCharge-=0.02;
153.         }
154.       }
155.       }
156.       if(key=='n'){
157.         fill(random(255),random(255),random(255));
158.         for(int i=playerXpos; i<=width; i+=3){
159.         ellipse(i,playerYpos,50,800);
160.       }
161.       }
162.     }
163. 
     
164. 
     
165.   beginShape();
166.     fill(0,30,214);
167.     stroke(0,236,235);
168.     vertex(playerXpos+16,playerYpos);
169.     vertex(playerXpos,playerYpos+8);
170.     vertex(playerXpos-8,playerYpos+16);
171.     vertex(playerXpos-4,playerYpos);
172.     vertex(playerXpos-8,playerYpos-16);
173.     vertex(playerXpos,playerYpos-8);
174.     endShape(CLOSE);
175. }
176. void meters(){
177.   //laserCharge
178. int enemiesLeft=level*3-death;
179.   fill(0,255,255);
180.   rect(100,350,laserCharge,40);
181.   textSize(30);
182.   text("Score:" + score,0,350);
183.   text("Enemies Left:" +enemiesLeft ,400,350);
184.   
185. }

this is the code:

2. int life=20;
3. int level=1;
4. float playerYpos=200;
5. int playerXpos=30;
6. boolean menu=true;
7. boolean instruct=false;
8. int laserCounter=400;
9. PFont font;
10. 
    
11. Enemy[]Enemies=new Enemy[level*3];
12. void setup(){
13.   size(800,400);
14.   smooth();
15.     for (int i=0;i<Enemies.length;i++){
16.     Enemies[i]=new Enemy(random(800,1000),random(height), level*10, 3);
17.     }
18. 
    
19. 
    
20. }
21. void draw(){
22.         background(255);
23.   fill(255,0,0);
24.   font=loadFont("Corbel-Bold-48.vlw");
25.   if(menu&&!instruct){
26.     textFont(font,70);
27.     text("Play Game",250,100);
28.     text("Instruct",290,300);
29.   
30.     if(mousePressed&&mouseX>250&&mouseX<580&&mouseY>30&&mouseY<100){
31.   menu=false;
32. }
33.     if(mousePressed&&mouseX>290&&mouseX<540&&mouseY>230&&mouseY<300){
34. instruct=true;
35.     }
36.   }
37.     if(menu&&instruct){
38.       textSize(27);
39.       String s="Press up and down arrows to move the ship up and down. The number of enemies is displayed in the bottom right corner. You laser will get stronger every level and so will the enemies. At level 10, there will be a boss. Every time an enemy goes off screen, you will lose a life. You have 20 lives. Lasers must recharge so you can't use them for too long. There are three ways to shoot. Hold space bar to shoot forward or press n for blast cannon. Blast cannons are extremely powerful but you only have four.";
40.       text(s,50,20,750,375);
41.       String back="Back";
42.       text(back,375,375);
43.       if(mousePressed&&mouseX>375&&mouseX<430&&mouseY<375&&mouseY>350){
44.         instruct=false;
45.       }
46.   }
47.   if(!menu&&!instruct){ 
48.     if(life>=0){
49.   background(255);
50.   for (int i=0;i<Enemies.length;i++){
51.     Enemies[i].display();
52.     Enemies[i].move();
53.     player();
54.   }
55.   }
56.   }
57. }
58. class Enemy{
59.   float xpos;
60.   float ypos;
61.   int health;
62.   float speed;
63.   Enemy(float tempXpos, float tempYpos, int tempHealth, float tempSpeed){
64.     xpos= tempXpos;
65.     ypos= tempYpos;
66.     health= tempHealth;
67.     speed= tempSpeed;
68.   }
69.   void display(){
70.     if(health>0){
71.     stroke(196,20,20);
72.     fill(139,30,30);
73.     beginShape();
74.     vertex(xpos-16,ypos);
75.     vertex(xpos,ypos-8);
76.     vertex(xpos+8,ypos-16);
77.     vertex(xpos+4,ypos);
78.     vertex(xpos+8,ypos+16);
79.     vertex(xpos,ypos+8);
80.     endShape(CLOSE);
81.     }
82.         if(keyPressed){
83.       if(key==' '){
84.       if(playerYpos>=ypos-16&&playerYpos<=ypos+16){
85.         health-=1;
86.       }
87. }
88. if(key=='n'){
89.   health-=100;
90.     }
91.   }
92.   }
93.   void move(){
94.     xpos=xpos-speed;
95.     if(xpos+2<0){
96.       life-=1;
97.       xpos=width;
98.       xpos+=speed;
99.     }
100.   }
101. 
     
102. }
103. 
     
104. void player(){
105.     if(keyPressed){
106.       if(keyCode==UP){
107.         playerYpos-=2;
108.       }
109.       if(keyCode==DOWN){
110.         playerYpos+=2;
111.       }
112.       if(key==' '){
113.         fill(255,0,0);
114.         stroke(255,0,0);
115.         for(int i=playerXpos; i<=width; i+=3){
116.         ellipse(i,playerYpos,5,5);
117.       }
118.       }
119.       if(key=='n'){
120.         fill(random(255),random(255),random(255));
121.         for(int i=playerXpos; i<=width; i+=3){
122.         ellipse(i,playerYpos,50,800);
123.       }
124.       }
125.     }
126. 
     
127. 
     
128.   beginShape();
129.     fill(0,30,214);
130.     stroke(0,236,235);
131.     vertex(playerXpos+16,playerYpos);
132.     vertex(playerXpos,playerYpos+8);
133.     vertex(playerXpos-8,playerYpos+16);
134.     vertex(playerXpos-4,playerYpos);
135.     vertex(playerXpos-8,playerYpos-16);
136.     vertex(playerXpos,playerYpos-8);
137.     endShape(CLOSE);
138. }
139. 
     

what happens is that I don't see the Enemies. Also, my teacher thought that it would be too hard to explain how to do something so she skipped it and I need someone to help me with it. Whenever a condition is met for a class, all of the objects disappear(ex.I shoot one and all of them disappear). How do you fix that?