Arduino robots game

#include <serialGLCD.h>
int BOTS=3;
unsigned char side[256] = {
    0xFF, 0x00, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x40, 0x40, 0x40,
    0x40, 0x00, 0xC0, 0x00, 0x00, 0x00, 0xC0, 0x00, 0xC0, 0x40, 0x40, 0x40,
    0x40, 0x00, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x1F, 0x10,
    0x10, 0x10, 0x10, 0x00, 0x1F, 0x12, 0x12, 0x12, 0x10, 0x00, 0x01, 0x06,
    0x18, 0x06, 0x01, 0x00, 0x1F, 0x12, 0x12, 0x12, 0x10, 0x00, 0x1F, 0x10,
    0x10, 0x10, 0x10, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x18, 0x24, 0x24, 0x24, 0xC0,
    0x00, 0xF8, 0x04, 0x04, 0x04, 0x00, 0xF8, 0x04, 0x04, 0xF8, 0x00, 0xFC,
    0x64, 0xA4, 0x18, 0x00, 0xFC, 0x24, 0x24, 0x04, 0x00, 0x00, 0x00, 0x00,
    0xFF, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01,
    0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00,
    0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00
};
int score = 0, tscore = 0;
struct robot {
  uint8_t x,y;
  uint8_t ox,oy;
  uint8_t status;
//  uint8_t dirty;
} robots[32];
int px,py;
serialGLCD s;
void seedrand(){
  randomSeed(analogRead(A0) * analogRead(A5) + digitalRead(13) + digitalRead(5));
}
void setup(){
    Serial.begin(115200);
    delay(1000);
    s.resetLCD();
    delay(500);
    int i,k;
    tscore += score;
    score = 0;
    seedrand();
    for(i = 0;i < BOTS;i++){
        robots[i].x = random(0,32);
        robots[i].y = random(0,21);
        robots[i].status = 1;
        while(robots[i].x == 16 && robots[i].y == 10){
          robots[i].x = random(0,32);
          robots[i].y = random(0,21);
        }
        for(k = 0;k < BOTS;k++){
          if(i == k){continue;}
          while(robots[i].x == robots[k].x && robots[i].y == robots[k].y){
            robots[i].x = random(0,32);
            robots[i].y = random(0,21);
          }
        }
    }
    px = 16;
    py = 10;
    s.drawData(96, 0, 7, 32, 64, side);
    s.gotoPosition(108, 16);
    Serial.print(BOTS - 2);
    delay(100);
    s.gotoPosition(100, 50);
    Serial.print(tscore);
    delay(100);
}
void robotstep(){
  for(int r = 0;r < BOTS;r++){
    if(!robots[r].status) continue;
    s.togglePixel(robots[r].x*3, robots[r].y*3, 0);
    s.togglePixel(1+robots[r].x*3, 1+robots[r].y*3, 0);
    s.togglePixel(2+robots[r].x*3, 2+robots[r].y*3, 0);
    delay(10);
    if(robots[r].x > px){robots[r].x--;}
    if(robots[r].x < px){robots[r].x++;}
    if(robots[r].y < py){robots[r].y++;}
    if(robots[r].y > py){robots[r].y--;}
  }
}
int getdeadbots(){
  int a;
  int b=0;
  for(a = 0;a < BOTS;a++){
    if(!robots[a].status){b++;}
  }
  return b;
}
void loop(){
  int r,rl;
  if(score == (BOTS * 100)){
    s.resetLCD();
    Serial.print("ALL BOTS CLEARED!");
    s.gotoPosition(0,16);
    Serial.print("Press key=next level");
    while(!Serial.available());
    BOTS++;
    Serial.read();
    setup();
    return;
  }
  for(r = 0;r < BOTS;r++){
    for(rl = 0;rl < BOTS;rl++){
      if(robots[r].x == robots[rl].x && robots[r].y == robots[rl].y && r != rl){
        robots[r].status = robots[rl].status = 0;
      }
    }
    if(robots[r].status){
      s.togglePixel(robots[r].x*3, robots[r].y*3, 1);
      s.togglePixel(1+robots[r].x*3, 1+robots[r].y*3, 1);
      s.togglePixel(2+robots[r].x*3, 2+robots[r].y*3, 1);
    }
    else {
      int X,Y;
      for(X = 0;X < 3;X++){
        for(Y = 0;Y < 3;Y++){
          s.togglePixel(robots[r].x*3+X, robots[r].y*3+Y, 1);
          delay(3);
        }
      }
    //  delay(25);
    }
    if(robots[r].x == px && robots[r].y == py){
      while(1){
        delay(1000);
        s.resetLCD();
        s.gotoPosition(0,10);
        Serial.print("Score: ");
        Serial.print(tscore+score);
        s.gotoPosition(0,0);
        delay(750);
        Serial.print("GAME OVER!");
        delay(1500);
      }
    }

  }
  if(Serial.available()){
    s.togglePixel(1+px*3,py*3,0);
    s.togglePixel(px*3,py*3+1,0);
    s.togglePixel(2+px*3,py*3+1,0);
    s.togglePixel(1+px*3,2+py*3,0);
    switch(Serial.read()){
      case '1': if(px>0&&py<20){px--; py++;} else {delay(100);return;} break;
      case '2': if(py<20)py++; else {delay(100);return;} break;
      case '3': if(px<31&&py<20){px++; py++;} else {delay(100);return;} break;
      case '4': if(px>0)px--; else {delay(100);return;} break;
      case '5': px = random(0,32); py = random(0,21);
      case '6': if(px<31)px++; else {delay(100);return;} break;
      case '7': if(px>0&&py>0){px--; py--;} else {delay(100);return;} break;
      case '8': if(py>0)py--; else {delay(100);return;} break;
      case '9': if(px<31&&py>0){px++; py--;} else {delay(100);return;} break;

    }
    robotstep();
    score = getdeadbots() * 100;
    s.gotoPosition(100, 50);
    Serial.print(tscore+score);
  }
  s.togglePixel(1+px*3,py*3,1);
  s.togglePixel(px*3,py*3+1,1);
  s.togglePixel(2+px*3,py*3+1,1);
  s.togglePixel(1+px*3,2+py*3,1);
  delay(150);
}