I cant get the laser to fire correctly. i want it to start rising as a bullet does when the mouse is pressed. Disregard the commented code on lines 8 and 18.

1. //Pimp Man
2. boolean displayStartScreen;
3. int xmove = 0; int ymove = 0;
4. int xpos = 150; int ypos = 150; 
5. int row = 0; int col = 0;
6. int x = 175; int y = 100;
7. void setup() {
8. size(800, 800); //size of game
9. textAlign(CENTER, CENTER); //alignment of timer
10. displayStartScreen = true;
11. }
12. void draw() {
13. if ( displayStartScreen ) {
14. drawStartScreen(); //call Start Screen
15. } else {
16. background(0); // Black background
17. fill(255);
18. text( "" + millis() / 1000, 35, 20 );
19. fill(255,140,5);
20. rect(450,650,50,50);
21. line(200, 100, 200, 400);
22. line(200, 400, 475, 400);
23. line(475, 400, 475, 650);
24. stroke(255);
25. player(x,y,xpos,ypos);
26. }
27. }
28. void player(int x,int y, int xpos, int ypos) {
29. fill(0,255,0);
30. rect(x,y,50,50);
31. }
32. void drawStartScreen() { //Start Screen
33. background(0); //Black Background
34. textSize(20);
35. text("*Hurry, timer has already started!*", width/2, 500); 
36. textSize(30);
37. text("Press Enter/Return to Start", width/2, height/2); //How to Start
38. textSize(70);
39. text("PIMP MAN", 400, 200); //Game Title
40. }
41. void check(){
42. if (row > 7 || col > 7 || row < 0 || col < 0 ){
43. background(255);
44. }
45. }
46. void keyPressed() {
47. if ( displayStartScreen ) {
48. if (key == ENTER || key == RETURN) { //Pushed to Start
49. displayStartScreen = false;
50. if(key == UP) {
51. ymove = ymove-100;
52. col = col-1;
53. check();
54. }
55. if(key == LEFT){
56. xmove = xmove-100;
57. row = row-1;
58. check();
59. }
60. if(key == RIGHT){
61. xmove = xmove+100;
62. row = row+1;
63. check();
64. }
65. if(key == DOWN){
66. ymove = ymove+100;
67. col = col+1;
68. check();
69. }
70. }
71. }
72. }
73. void animate( ){
74. player(x, y, xpos, ypos);
75. if(xmove > 0){
76. xpos = xpos + 1;
77. xmove = xmove - 1;
78. }
79. if(ymove > 0){
80. ypos = ypos + 1;
81. ymove = ymove -1;
82. }
83. }

i cant get the green square to move need help

//Pimp_Man

int time; //Timer for elapsed time
int m = millis(); //Shorten time used to type "millis()"

void setup() {
noLoop();
size(800,800); //size of game
textSize(20); //size of timer text
textAlign(100,100); //alignment of timer
}
void draw() {
begin(); //call Start Screen
background(255); //White Background
time=m/1000; //Timer itself
}

void begin() { //Start Screen
background(0); //Black Background
text("PIMP MAN",400,200); //Game Title
text("Press Return to Start",width/2,height/2); //How to Start
if(keyPressed == ENTER || keyPressed == RETURN) { //Pushed to Start
loop();
}
}