game/sdlpp/sdlpp_mouse.cpp

#include "sdlpp_mouse.hpp"
#include "sdlpp_renderobject.hpp"

SDLPP::Vec2D< int > SDLPP::Mouse::getMousePosition() {
    int x, y;
    SDL_GetMouseState( &x, &y );
    return { x, y };
}

SDLPP::Vec2D< double >
SDLPP::Mouse::getMousePositionDouble( const SDLPP::Renderer &r,
                                      SDLPP::ObjectAlignment alignment_x,
                                      SDLPP::ObjectAlignment alignment_y ) {
    auto pixel_pos = getMousePosition();
    auto smaller = r.getSmallerSide();
    Vec2D< double > ret = { static_cast< double >( pixel_pos.getX() ) / smaller,
                            static_cast< double >( pixel_pos.getY() ) /
                                smaller };
    Vec2D< double > additions =
        ( r.getDoubleDimensions() - Vec2D< double >( 1.0, 1.0 ) ) / 2;
    switch ( alignment_x ) {
    case SDLPP::OBJ_CENTER:
        ret -= { additions.getX(), 0 };
        break;
    case SDLPP::OBJ_END:
        ret -= { 2 * additions.getX(), 0 };
    default:
        break;
    }
    switch ( alignment_y ) {
    case SDLPP::OBJ_CENTER:
        ret -= { 0, additions.getY() };
        break;
    case SDLPP::OBJ_END:
        ret -= { 0, 2 * additions.getY() };
    default:
        break;
    }
    return ret;
}