CircleVector.cpp.orig

#include "CircleVector.h"

CircleVector::CircleVector(SDL_Renderer* renderer)
    : mRenderer(renderer)
{
    SDL_Surface* circleSurface;
    circleSurface = SDL_LoadBMP("circ.bmp");
    if(circleSurface == NULL)
        throw "File not found.";
    diameter = circleSurface->w;
    SDL_SetColorKey(circleSurface, SDL_TRUE, SDL_MapRGB(circleSurface->format, 0, 0xFF, 0xFF));
    circleTexture = SDL_CreateTextureFromSurface(renderer, circleSurface);
    SDL_FreeSurface(circleSurface);
}

CircleVector::~CircleVector()
{
    SDL_DestroyTexture(circleTexture);
}

bool CircleVector::haveCollided(Circle* circle_1, Circle* circle_2)
{
    // if distance squared less than diameter squared
    if((double)(circle_1->posX - circle_2->posX) * (circle_1->posX - circle_2->posX) +
            (circle_1->posY - circle_2->posY) * (circle_1->posY - circle_2->posY) <
            diameter * diameter)
    {
        return true;
    }
    return false;
}

/**
 * @brief Moves all the circles in the vector at constant velocity, checks for collisions with
 * the screen border and other circles.
 * @todo Collision detection with other circles is simple and unrealistic. The angle is not taken
 * into account.
 */
void CircleVector::move()
{
    for(iterator it = begin(); it < end(); it++)
    {
        it->posX += it->velX;
        it->posY += it->velY;
        if(it->posX < diameter / 2 || it->posX > 800 - diameter / 2)
        {
            it->velX = -it->velX;
        }
        if(it->posY < diameter / 2 || it->posY > 600 - diameter / 2)
        {
            it->velY = -it->velY;
        }
    }
	for(iterator it = begin(); it < end(); it++)
	{
    for(iterator it2 = it; it2 < end(); it2++)
    {
        if(haveCollided(it, it2))
        {
            double n_x, n_y; //< vector of mirror line
            n_x = it->posX - it
        }
    }
	}
}

void CircleVector::render()
{
    iterator _end = end();
    for(iterator it = begin(); it < _end; it++)
    {
        SDL_Rect dst = { it->posX - diameter / 2, it->posY - diameter / 2, diameter, diameter };
        SDL_RenderCopy(mRenderer, circleTexture, NULL, &dst);
    }
}