Messages

1

General / Doesn't draw circles

« on: March 31, 2011, 10:30:46 pm »

After a short look, at least one problem is in the following code:

Code: [Select]

sf::Shape *s = new sf::Shape;
s->Circle(Hull.GetPosition().x+(HULL_W/2),Hull.GetPosition().y - WEAPON0_H, 5,sf::Color(255,255,255),1);

You're misusing Circle(). It's a class method (i.e. static class function) that returns a new shape. You should do something like this instead:

Code: [Select]

sf::Shape* s( new sf::Shape( sf::Shape::Circle( ... ) ) );

Please always try to provide a minimal code example that reproduces your problem. It's sometimes exhausting to skip all the irrelevant parts in source code.

I always thought that was the problem but never knew why.
Thanks for the help

2

General / Doesn't draw circles

« on: March 31, 2011, 07:00:56 pm »

Code: [Select]

int main()
{
sf::RenderWindow WMain(sf::VideoMode(WINDOW_WIDTH,WINDOW_HEIGHT,WINDOW_BPP),"Title");
WMain.SetFramerateLimit(100);
sf::Image IBackGround;
IBackGround.LoadFromFile("C:\\Users\\Administrator\\Documents\\Visual Studio 2008\\Projects\\AsteroidsLG\\Release\\background.png");
sf::Sprite BackGround(IBackGround);BackGround.Resize(WINDOW_WIDTH,WINDOW_HEIGHT);
sf::Shape Hull = sf::Shape::Rectangle(0,0,HULL_W,HULL_H,sf::Color(255,255,0),1);
Hull.Move(300,300);
sf::Shape Weapon = sf::Shape::Line(0,0,WEAPON0_W,WEAPON0_H,WEAPON0_T,sf::Color(255,0,0));
const sf::Input &gInput = WMain.GetInput();
float ElTime = 0;
sf::Clock gClock;
std::vector<sf::Shape *> Balls;
float lastShot = 1;
while(WMain.IsOpened())
{
sf::Event Event;
while(WMain.GetEvent(Event))
{
if(Event.Type == sf::Event::Closed)
WMain.Close();
}

ElTime = WMain.GetFrameTime();
if(gInput.IsKeyDown(sf::Key::W))
{
Hull.Move(0,ElTime * -100);
}
if(gInput.IsKeyDown(sf::Key::A))
{
Hull.Move(ElTime * -100,0);
}
if(gInput.IsKeyDown(sf::Key::D))
{
Hull.Move(ElTime * 100,0);
}
if(gInput.IsKeyDown(sf::Key::S))
{
Hull.Move(0,ElTime*100);
}
if(gInput.IsKeyDown(sf::Key::Space))
{
lastShot = gClock.GetElapsedTime();
//if(lastShot > 1)
//{
sf::Shape *s = new sf::Shape;//::Circle(Hull.GetPosition().x+(HULL_W/2),Hull.GetPosition().y - WEAPON0_H,
//5,sf::Color(255,255,255),1);
s->Circle(Hull.GetPosition().x+(HULL_W/2),Hull.GetPosition().y - WEAPON0_H,
5,sf::Color(255,255,255),1);
Balls.push_back(s);
//}

}


WMain.Clear(sf::Color(0,220,0));


Weapon.SetPosition(Hull.GetPosition().x+(HULL_W/2),Hull.GetPosition().y - WEAPON0_H);
WMain.Draw(BackGround);
WMain.Draw(Hull);
WMain.Draw(Weapon);
for(int i = 0;i<Balls.size();i++)
{
if(Balls[i]->GetPosition().y < WINDOW_HEIGHT  || Balls[i]->GetPosition().y > 0)
{

Balls[i]->Move(0,ElTime * -150);
WMain.Draw(*(Balls[i]));
//printf("%d \n",Balls.size());
}
else if(Balls[i]->GetPosition().y > WINDOW_HEIGHT || Balls[i]->GetPosition().y < 0)
{
delete Balls[i];
}

}

WMain.Display();
}

return EXIT_SUCCESS;
}
I try to make the shape an vector array so that if its out of the screen it doesn't take memory.But it just doesn't render it.
What could be the problem ?

3

General / Pivot point

« on: March 25, 2011, 07:22:55 pm »

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Code: [Select]

sf::Vector2f mTP = sf::Vector2f(WMain.GetInput().GetMouseX()-tTurrTankS.GetPosition().x,WMain.GetInput().GetMouseY()-tTurrTankS.GetPosition().y);
float fAngle = atan(mTP.x/mTP.y);
if(mTP.x == 0 && mTP.y == 0)
fAngle = 0;
fAngle *= 180/3.14159;
if(mTP.y >= 0)
fAngle += 180;

tTurrTankS.SetRotation(fAngle);
This is the code I use but,the Turrent rotates like it's center is somewhere else.