int main(int argc, char **argv) {
vector<string> args;
for(unsigned i = 1; i < (unsigned)argc; ++i)
args.push_back((string)argv[i]);
srand(time(NULL));
if(inVector(args, (string)"--help") || inVector(args, (string)"-h")) {
outputHelp(cout);
return 0;
}
bool loadSystem = false;
string systemName = "";
for(unsigned i = 0; i < args.size(); ++i) {
if(args[i] == (string)"--load") {
if(i != args.size() - 1) {
loadSystem = true;
systemName = args[i + 1];
args.erase(args.begin() + i);
args.erase(args.begin() + i);
i -= 2;
} else {
cerr << "psystem: --load requires argument" << endl;
return 2;
}
}
}
if(!args.empty()) {
cerr << "psystem: invalid argument passed" << endl;
outputHelp(cerr);
return 1;
}
unsigned windowWidth = 800, windowHeight = 600;
const ldouble scaleFactor = 10.0, minPSize = 0.3, maxPSize = 3.6;
string windowTitle = "psystem";
RenderWindow window(VideoMode(windowWidth, windowHeight), windowTitle,
sf::Style::Close);
window.setFramerateLimit(60);
View view;
view.setSize(windowWidth / scaleFactor, windowHeight / scaleFactor);
unsigned steps = 100;
ParticleSystem psystem(1.0 / 60.0 / steps);
ldouble psize = 3.6 / 4, psizeDelta = 0.1;
if(loadSystem) {
psystem.load(systemName);
if(psystem.size() < 1) {
return 3;
}
} else {
unsigned ipcount = rand() % 5 + 3;
psize = 3.6 / ipcount;
for(unsigned i = 0; i < ipcount; ++i) {
ldouble radians = (rand() % 360) * M_PI/180.0;
psystem.push(Particle(cos(radians)*16.0, sin(radians)*16.0, psize));
}
}
bool done = false, mode = true, run = true;
while(!done && window.isOpen()) {
Event event;
while(window.pollEvent(event)) {
if(event.type == Event::Closed)
window.close();
if(event.type == Event::KeyPressed) {
if(event.key.code == Keyboard::Escape)
done = true;
if(event.key.code == Keyboard::Space)
mode = !mode;
if(event.key.code == Keyboard::P)
run = !run;
}
if(event.type == Event::MouseButtonPressed) {
// ConvertCoords -> mapPixelToCoords or mapCoordsToPixel
sf::Vector2i mouseButtonLoc(event.mouseButton.x, event.mouseButton.y);
ldouble mx = window.mapPixelToCoords(mouseButtonLoc, view).x,
my = window.mapPixelToCoords(mouseButtonLoc, view).y;
if(event.mouseButton.button == Mouse::Left) {
psystem.push(Particle(mx, my, psize));
} else if(event.mouseButton.button == Mouse::Right) {
for(unsigned p = 0; p < psystem.size(); ++p) {
Particle cp = psystem.get(p);
ldouble dx = mx - cp.px, dy = my - cp.py,
distance = sqrt(dx*dx + dy*dy);
if(distance < cp.radius) {
psystem.erase(p);
break;
}
}
}
}
if(event.type == Event::MouseWheelMoved) {
psize += event.mouseWheel.delta * psizeDelta;
if(psize < minPSize)
psize = minPSize;
if(psize > maxPSize)
psize = maxPSize;
}
}
if(run)
for(unsigned i = 0; i < steps/2; ++i)
psystem.update();
window.clear(Color::White);
if(mode) {
view.setCenter(psystem.getX(), psystem.getY());
} else if(psystem.size() > 0) {
view.setCenter(psystem.get(0).px, psystem.get(0).py);
}
window.setView(view);
psystem.draw(window);
window.display();
}
if(window.isOpen())
window.close();
return 0;
}
