source/logic/Car.cpp

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#include "Car.h"

Car::Car(double x, double y, BitmapStore::Image image, Maze::Direction facing)
    :GameObject(x,y,image,facing),
    _speed(_baseSpeed)
{
}

double Car::speed() const
{
    return _speed;
}

void Car::move(const Maze& maze)
{
    double targetX = 0;
    double targetY = 0;

    int checkX = 0;
    int checkY = 0;

    switch(_facing)
    {
        case Maze::UP:
            targetX = MazeMath::round(_x);
            targetY = _y - _speed;
            checkX = floor(targetX);
            checkY = floor(targetY);
            break;
        case Maze::DOWN:
            targetX = MazeMath::round(_x);
            targetY = _y + _speed;
            checkX = floor(targetX);
            checkY = ceil(targetY);
            break;
        case Maze::LEFT:
            targetX = _x - _speed;
            targetY = MazeMath::round(_y);
            checkX = floor(targetX);
            checkY = floor(targetY);
            break;
        case Maze::RIGHT:
            targetX = _x + _speed;
            targetY = MazeMath::round(_y);
            checkX = ceil(targetX);
            checkY = floor(targetY);
            break;
    }

    if (!maze.getSolid(checkX, checkY))
    {
        //can move that way
        _x = targetX;
        _y = targetY;
    }
    else
    {
        //can not move to targetX and targetY, but move to the edge of current block
        switch(_facing)
        {
            case Maze::UP:
                _y = floor(_y);
                break;
            case Maze::DOWN:
                _y = ceil(_y);
                break;
            case Maze::LEFT:
                _x = floor(_x);
                break;
            case Maze::RIGHT:
                _x = ceil(_x);
                break;
        }
    }
}