hey i cant get these two pieces of code to work, any help would be great

int ii;
int NUMSHOTS = 100;
Shoot[] history = new Shoot[NUMSHOTS];
boolean hit;



void setup()
{
 frameRate(60);
 size(400, 400);
 smooth();
}

void draw()
{



 for (int ii = 0; ii < NUMSHOTS; ii = ii + 1)
 {
   draw_shot(history[ii], ii);

 } for(int i = 0; i < NUMSHOTS; i = i + 1)
 if( hit(history[i],300,350,300,350))
 {rect(300,300,50,50);
 }
   
}

class Shoot
{

 int x;
 int y;
 int creationFrame;

}


// Draw this shot object to the screen.
// If the shot object is 'old' (was made at least 50 frames ago)
//  then remove it from the shot array.
void draw_shot(Shoot shot, int index)
{
 if (shot == null) return;
 strokeWeight(2);
 stroke(220,200,0);
 line(shot.x, shot.y, shot.x, shot.y+10);
 shot.y+=3;


 if (shot.creationFrame + 350 < frameCount || shot.y > height - 10 )
 {

   history[index] = null;
 }    
}

// Find a slot on our shot array that is unused,
// then create a shot object at x.
void create_shot(int x, int y)
{
 for (ii = 0; ii < NUMSHOTS; ii = ii + 1)
 {
   if (history[ii] == null)
   {
     history[ii] = new Shoot();
     history[ii].x = x;
     history[ii].y = y;
     history[ii].creationFrame = frameCount;
     break; // I'm done
   }
 }
}

void mousePressed()
{
 create_shot(mouseX, mouseY);
}
boolean hit(Shoot shot, int x1, int x2, int y1, int y2){
 if(x1<shot.x && shot.x>x2 && y1<shot.y && shot.y>y2){
   return true;
 } else{
   return false;
 }
}



the second is meant to draw a bulding made up of windows but only draws one window
city [] history = new city[10];
window [] structure = new window[100];

int speed;
void setup(){
 size(400,400);
 smooth();
}
void draw(){
 for(int i = 0; i<10; i++){
   draw_building(history[i],i);
 }
}


class city {
 int y;
 int x;

}

void draw_building(city building, int index)
{      

 if(building == null) return;
 int XstartPoint = building.x;
 int YstartPoint = building.y;
 for(int i = 0; i<6; i++){
   for(int k = 0; k<3; k++){
     fill(255);
     stroke(0);
     strokeWeight(1);
     create_window(XstartPoint, YstartPoint);
     for(int b = 0; b<100;b++){
       draw_window(structure[b],b);
       XstartPoint +=10;
     }
YstartPoint +=10;

   }
 }
}

void create_building(int x,int y)
{
 for (int i = 0; i < 10; i = i + 1)
 {
   if (history[i] == null)
   {
     history[i] = new city();
     history[i].x = x;
     history[i].y = y;
     break; // I'm doneint ii;
int NUMSHOTS = 100;
Shoot[] history = new Shoot[NUMSHOTS];
boolean hit;



void setup()
{
 frameRate(60);
 size(400, 400);
 smooth();
}

void draw()
{



 for (int ii = 0; ii < NUMSHOTS; ii = ii + 1)
 {
   draw_shot(history[ii], ii);

 } for(int i = 0; i < NUMSHOTS; i = i + 1)
 if( hit(history[i],300,350,300,350))
 {rect(300,300,50,50);
 }
   
}

class Shoot
{

 int x;
 int y;
 int creationFrame;

}


// Draw this shot object to the screen.
// If the shot object is 'old' (was made at least 50 frames ago)
//  then remove it from the shot array.
void draw_shot(Shoot shot, int index)
{
 if (shot == null) return;
 strokeWeight(2);
 stroke(220,200,0);
 line(shot.x, shot.y, shot.x, shot.y+10);
 shot.y+=3;


 if (shot.creationFrame + 350 < frameCount || shot.y > height - 10 )
 {

   history[index] = null;
 }    
}

// Find a slot on our shot array that is unused,
// then create a shot object at x.
void create_shot(int x, int y)
{
 for (ii = 0; ii < NUMSHOTS; ii = ii + 1)
 {
   if (history[ii] == null)
   {
     history[ii] = new Shoot();
     history[ii].x = x;
     history[ii].y = y;
     history[ii].creationFrame = frameCount;
     break; // I'm done
   }
 }
}

void mousePressed()
{
 create_shot(mouseX, mouseY);
}
boolean hit(Shoot shot, int x1, int x2, int y1, int y2){
 if(x1<shot.x && shot.x>x2 && y1<shot.y && shot.y>y2){
   return true;
 } else{
   return false;
 }
}

   }
 }
}

void mousePressed()
{
 create_building(mouseX,mouseY);
}


class window{
 int x;
 int y;
}

void draw_window(window glass, int index){

 if (glass == null) return;
 rect(glass.x,glass.y,10,10);
}

void create_window(int x, int y){
 for (int w = 0; w < 100; w = w + 1)
 {
   if (structure[w] == null)
   {
     structure[w] = new window();
     structure[w].x = x;
     structure[w].y = y;
     break; // I'm done
   }
 }
}



cheers