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« on: October 07, 2010, 12:30:16 am »
This program compiles correctly, but when the left mouse button is pressed it gives this error:
pure virtual method called
terminate called without active exception
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
It only happens when a new instance of the class CBullet is created. It (in this program) is only created when you press the LMB.
When a new CBullet is created it adds a pointer to that class to the vector CBullets. And when it is destroyed it is removed from the vector.
I am compiling with MinGW. My command line is:
g++ main.cpp -obin/output.exe -lsfml-system -lsfml-window -lsfml-graphics -lsfml-audio -static-libgcc -static-libstdc++
Edit:
It happens when the sprite is drawn at line 188
#include <cmath>
#include <vector>
#include <SFML/Graphics.hpp>
#include <SFML/Audio.hpp>
#define PI 3.14159265358979
using namespace std;
template <class T>
T FindDistance(T x1, T x2, T y1, T y2)
{
return sqrt( (x2 - x1)*(x2-x1) + (y2 - y1)*(y2-y1) );
}
class CBullet;
vector<CBullet*> CBullets;
sf::Image IMGBullet;
class CBullet
{
private:
float MAX_DIST, rot, sx, sy;
bool force_destroy;
public:
sf::Sprite Sprite;
CBullet(float x, float y, float rot_)
{
this->MAX_DIST = 350.f;
this->force_destroy = false;
this->Sprite.SetImage(::IMGBullet);
this->Sprite.SetX(x);
this->sx = x;
this->Sprite.SetY(y);
this->sy = y;
this->rot = rot_;
CBullets.push_back(this);
}
~CBullet()
{
for ( int i; i < CBullets.size(); i++ )
{
if ( CBullets[i] == this )
{
CBullets.erase(CBullets.begin() + i);
break;
}
}
}
void Update (void)
{
if ( !this->force_destroy )
{
float X = this->Sprite.GetPosition().x;
float Y = this->Sprite.GetPosition().y;
if ( FindDistance<float> (X, sx, Y, sy) >= MAX_DIST )
{
this->force_destroy = true;
}
this->Sprite.SetX( X + sin(rot) );
this->Sprite.SetY( Y - cos(rot) );
}
else
delete this;
}
} ;
int main()
{
sf::Image IMGPlayer;
sf::Image IMGCursor;
sf::Image IMGBack;
sf::SoundBuffer SNBShoot;
sf::RenderWindow App(sf::VideoMode(800,600,32), "rotation test");
App.ShowMouseCursor(false);
sf::Clock CLKShoot;
if ( !IMGPlayer.LoadFromFile("gfx/player.bmp") )
App.Close();
IMGPlayer.CreateMaskFromColor(sf::Color(255,0,255));
if ( !IMGCursor.LoadFromFile("gfx/pointer.bmp") )
App.Close();
if ( !IMGBack.LoadFromFile("gfx/desktop.png") )
App.Close();
if ( !SNBShoot.LoadFromFile("sfx/elite.wav") )
App.Close();
if ( !IMGBullet.LoadFromFile("gfx/bullet.bmp") )
App.Close();
sf::Sound SNDShoot;
SNDShoot.SetBuffer(SNBShoot);
IMGCursor.CreateMaskFromColor(sf::Color(255,0,255));
sf::Sprite SPRPlayer;
sf::Sprite SPRCursor;
sf::Sprite SPRBack;
SPRPlayer.SetImage(IMGPlayer);
SPRCursor.SetImage(IMGCursor);
SPRBack.SetImage(IMGBack);
SPRPlayer.SetSubRect(sf::IntRect(1,1,32,32));
SPRCursor.SetSubRect(sf::IntRect(0,0,25,25));
SPRPlayer.SetX(400);
SPRPlayer.SetY(300);
SPRPlayer.SetCenter(16.f, 16.f);
SPRCursor.SetCenter(11.f, 11.f);
sf::Vector2f Center(400, 300);
sf::Vector2f HalfSize(400, 300);
sf::View MainView(Center, HalfSize);
CLKShoot.Reset();
while ( App.IsOpened() )
{
sf::Event Event;
while ( App.GetEvent(Event) )
{
if ( Event.Type == sf::Event::Closed )
App.Close();
}
float Offset = 150.f*App.GetFrameTime();
if ( App.GetInput().IsKeyDown(sf::Key::LShift) )
Offset *= 0.35f;
if ( App.GetInput().IsKeyDown(sf::Key::W) )
{
MainView.Move(0, -Offset);
SPRPlayer.Move(0, -Offset);
}
if ( App.GetInput().IsKeyDown(sf::Key::A) )
{
MainView.Move(-Offset, 0);
SPRPlayer.Move(-Offset, 0);
}
if ( App.GetInput().IsKeyDown(sf::Key::S) )
{
MainView.Move(0, Offset);
SPRPlayer.Move(0, Offset);
}
if ( App.GetInput().IsKeyDown(sf::Key::D) )
{
MainView.Move(Offset, 0);
SPRPlayer.Move(Offset, 0);
}
if ( App.GetInput().IsMouseButtonDown(sf::Mouse::Left) && CLKShoot.GetElapsedTime() >= SNBShoot.GetDuration() )
{
SNDShoot.Play();
CBullet bullet(SPRPlayer.GetPosition().x, SPRPlayer.GetPosition().y, SPRPlayer.GetRotation());
CLKShoot.Reset();
}
App.SetView(MainView);
App.Clear();
sf::Vector2f MousePos = App.ConvertCoords(App.GetInput().GetMouseX(), App.GetInput().GetMouseY());
SPRCursor.SetX(MousePos.x);
SPRCursor.SetY(MousePos.y);
SPRPlayer.SetRotation( -(atan2(App.GetInput().GetMouseY()-300, App.GetInput().GetMouseX()-400) * 180 / PI + 90) );
App.Draw(SPRBack);
App.Draw(SPRPlayer);
for ( int i = 0 ; i < CBullets.size(); i++ )
{
CBullets[i]->Update();
App.Draw(CBullets[i]->Sprite);
}
App.Draw(SPRCursor);
//App.SetView(App.GetDefaultView());
App.Display();
}
return 0;
}
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