int Blob::collides_with (Blob* obj) {
if (this->check_collide (obj)) {
int xx = abs(this->x - obj->x);
int yy = abs(this->y - obj->y);
double d = (sqrt ((xx * xx) + (yy * yy))); // Pythagorean theorem
Blob *giver = this;
Blob *reciever = obj;
if (this->radius > obj->radius) {
giver = obj;
reciever = this;
}
double oldArea = giver->Area;
double overlap = (giver->radius + reciever->radius) - d;
if (overlap < 0) overlap = 0; //-overlap;
giver->radius -= overlap;
if (giver->radius < 0.5) {
giver->radius = 0.0;
giver->Area = 0;
} else giver->calc_area();
reciever->Area += oldArea - giver->Area;
reciever->calc_radius();
return 1;
}
return 0;
}
int gameloop () {
//setup game
mainmenu();
blobs.clear();
for (int p = 0; p < tot_players; p++) {
blobs.push_back(Blob(players_start[p][0], players_start[p][1], player_radius));
blobs.back().playerid = p + 1;
}
for (int rad = 10; rad >= 1; rad -= 2) { // 1 blob or radius 10 to 10 blobs of radius 1.
for (int num = 0; num < 2 * (11 - rad); num++) {
int tries = 3;
Blob* newblob = new Blob();
newblob->radius = 3 * rad;
newblob->calc_area ();
while (tries) {
tries--;
newblob->x = (rand() % (SCREENW - (2 * (int)newblob->radius))) + (int)newblob->radius;
newblob->y = (rand() % (SCREENH - (2 * (int)newblob->radius))) + (int)newblob->radius;
newblob->dx = (rand () % 5 - 2) / 2;
newblob->dy = (rand () % 5 - 2) / 2;
if (blobs.size()) {
int c;
for (c = 0; c < blobs.size() && !newblob->check_collide (&blobs[c]); c++);
if (c == blobs.size()) {
blobs.push_back(*newblob);
tries = 0;
}
} else blobs.push_back (*newblob);
}
delete newblob;
}
}
int numplayers = tot_players;
tick = 0;
while ((!key[KEY_ESC]) && (!key[KEY_F1]) && (numplayers > 1)) {
while (!tick) rest(1);
// main game goes here.
while (tick) {
tick--;
numplayers = moveplayers ();
for (int c = 0; c < blobs.size(); c++) {
blobs[c].x += blobs[c].dx;
blobs[c].y += blobs[c].dy;
if ((blobs[c].x - blobs[c].radius) < 0) {
blobs[c].x = blobs[c].radius;
blobs[c].dx = -blobs[c].dx;
}
if ((blobs[c].y - blobs[c].radius) < 0) {
blobs[c].y = blobs[c].radius;
blobs[c].dy = -blobs[c].dy;
}
if ((blobs[c].x + blobs[c].radius) > SCREENW) {
blobs[c].x = SCREENW - blobs[c].radius;
blobs[c].dx = -blobs[c].dx;
}
if ((blobs[c].y + blobs[c].radius) > SCREENH) {
blobs[c].y = SCREENH - blobs[c].radius;
blobs[c].dy = -blobs[c].dy;
}
for (int d = c + 1; d < blobs.size(); d++) {
if (blobs[c].radius < 0.5) continue;
blobs[c].collides_with(&blobs[d]);
}
if (blobs[c].radius < 0.5) {
blobs.erase(blobs.begin() + c);
c--;
}
}
// draw screen
for (int c = 0; c < blobs.size(); c++) {
int col = makecol (156, 128 - (c * (128.0 / blobs.size())), (c * (128.0 / blobs.size())));
for (int p = 0; p < tot_players; p++) {
if (blobs[c].playerid == p + 1)
col = player_colors[p][0];
}
circlefill (buffer, blobs[c].x, blobs[c].y, (int)blobs[c].radius, col);
col = makecol (255, 128 - (c * (128.0 / blobs.size())), (c * (128.0 / blobs.size())));
for (int p = 0; p < tot_players; p++) {
if (blobs[c].playerid == p + 1)
col = player_colors[p][1];
}
circlefill (buffer, blobs[c].x + (blobs[c].radius / 6), blobs[c].y - (blobs[c].radius / 6), (int)(3 * blobs[c].radius / 4), col);
if (blobs[c].radius > 10) {
// textprintf_centre_ex(buffer, font, blobs[c].x + blobs[c].dx, blobs[c].y - 3 + blobs[c].dy, makecol(255,255,255), -1, "oo");
// textprintf_centre_ex(buffer, font, blobs[c].x + blobs[c].dx - 1, blobs[c].y - 5 + blobs[c].dy, makecol(255,255,255), -1, "..");
textprintf_centre_ex(buffer, font, blobs[c].x + blobs[c].dx, blobs[c].y - 5 + blobs[c].dy, makecol(0,0,0), -1, face);
}
}
blit(buffer, screen, 0, 0, 0, 0, SCREENW, SCREENH);
clear_to_color(buffer, makecol(0, 0, 0));
}
}
if (numplayers == 2) return 0;
textout_centre_ex(screen, font, "GAME OVER", SCREENW / 2, SCREENH / 2 - 20, makecol(255, 255, 255), -1);
if (numplayers == 0)
textout_centre_ex(screen, font, "No winner", SCREENW / 2, SCREENH / 2 + 20, makecol(255, 255, 255), -1);
else if (blobs[0].playerid)
textprintf_centre_ex(screen, font, SCREENW / 2, SCREENH / 2, player_colors[blobs[0].playerid - 1][0], -1, "Playser %d wins", blobs[0].playerid);
textout_centre_ex(screen, font, "Press ENTER", SCREENW / 2, SCREENH / 2 + 20, makecol(255, 255, 255), -1);
while(!key[KEY_ENTER] && !key[KEY_SPACE] && !key[KEY_ESC]&& !key[KEY_F1]) { rest(1); }
blobs.clear();
return 1;
}