void __fastcall TForm1::Button2Click(TObject *Sender){ build = !build;}
void Enemy::Draw_Enemy(){for (int i=0; i<enemyN; i++){ if (enemy_group[i].xx!=mainX) { if (enemy_group[i].health>0) { Form1->Canvas->Draw(enemy_group[i].xx, enemy_group[i].yy, enemy2); } else { Form1->Canvas->Draw(enemy_group[i].xx, enemy_group[i].yy, boom); } }}}...void __fastcall TForm1::FormPaint(TObject *Sender){for (int i=0; i<enemyN; i++){ enemy_group[i].Draw_Enemy();}....}