Effect methods changed from pure virtual to defaulting to a 0,0 vector

[physics.git] / src / Effects / Screen.cpp

#include "Screen.h"
#include "../debug.h"

#include "../Entities/PhysicsEntity.h"
#include "../Entities/Ball.h"

Screen::Screen()
{

}
Screen::~Screen()
{

}

Vector2 Screen::velocityDelta(const PhysicsEntity* e, float time_step) const
{
    const Vector2& pos = e->positionRaw();
    const Vector2& velo = e->velocityRaw();

    Vector2 acc(0,0);

    float radius = 0;
    const Ball* b = dynamic_cast<const Ball*>(e);
    if( b != NULL )
        radius = b->getRadius();


    if(pos.y > 600-radius && velo.y > 0)
        acc.y += velo.y * -2;

    if(pos.y < 0+radius && velo.y < 0)
        acc.y += velo.y * -2;

    if(pos.x > 800-radius && velo.x > 0)
        acc.x += velo.x * -2;

    if(pos.x < 0+radius && velo.x < 0)
        acc.x += velo.x * -2;

    return acc;
}