game/sdlpp/sdlpp_common.cpp

#include "sdlpp_common.hpp"

#ifdef _WIN32
#include "SDL2/SDL_image.h"
#else
#include <SDL2/SDL_image.h>
#endif
#include <iostream>

int SDLPP::hex2num( char c ) {
    if ( c <= '9' )
        return c - '0';
    switch ( c ) {
    case 'a':
    case 'A':
        return 10;
    case 'b':
    case 'B':
        return 11;
    case 'c':
    case 'C':
        return 12;
    case 'd':
    case 'D':
        return 13;
    case 'e':
    case 'E':
        return 14;
    default:
        return 15;
    }
}

bool SDLPP::init() {
    if ( SDL_Init( SDL_INIT_VIDEO ) < 0 ) {
        std::cerr << "SDL could not initialize! SDL_Error: " << SDL_GetError()
                  << std::endl;
        return false;
    }
    if ( IMG_Init( IMG_INIT_PNG ) != IMG_INIT_PNG ) {
        std::cerr << "SDL_image could not initialize! SDL_image Error: "
                  << IMG_GetError() << std::endl;
        return false;
    }
    if ( TTF_Init() == -1 ) {
        std::cerr << "SDL_ttf could not initialize! SDL_ttf Error: "
                  << TTF_GetError() << std::endl;
        return false;
    }
    return true;
}

bool SDLPP::init( uint32_t SDL_OPTIONS ) {
    if ( SDL_Init( SDL_OPTIONS ) < 0 ) {
        std::cerr << "SDL could not initialize! SDL_Error: " << SDL_GetError()
                  << std::endl;
        return false;
    }
    if ( IMG_Init( IMG_INIT_PNG ) != IMG_INIT_PNG ) {
        std::cerr << "SDL_image could not initialize! SDL_image Error: "
                  << IMG_GetError() << std::endl;
        return false;
    }
    return true;
}

bool SDLPP::init( uint32_t SDL_OPTIONS, int IMAGE_OPTIONS ) {
    if ( SDL_Init( SDL_OPTIONS ) < 0 ) {
        std::cerr << "SDL could not initialize! SDL_Error: " << SDL_GetError()
                  << std::endl;
        return false;
    }
    if ( IMG_Init( IMAGE_OPTIONS ) != IMAGE_OPTIONS ) {
        std::cerr << "SDL_image could not initialize! SDL_image Error: "
                  << IMG_GetError() << std::endl;
        return false;
    }
    return true;
}

std::tuple< int, int, int, int >
SDLPP::getColorsHEX( const std::string &color ) {
    int red = 0, green = 0, blue = 0, alpha = 255;
    const char *color_ptr = color.c_str();
    if ( color_ptr[0] == '#' )
        color_ptr++;
    red = hex2num( color_ptr[0] ) * 16 + hex2num( color_ptr[1] );
    green = hex2num( color_ptr[2] ) * 16 + hex2num( color_ptr[3] );
    blue = hex2num( color_ptr[4] ) * 16 + hex2num( color_ptr[5] );
    if ( color_ptr[6] != '\0' )
        alpha = hex2num( color_ptr[6] ) * 16 + hex2num( color_ptr[7] );
    return { red, green, blue, alpha };
}

SDL_Color
SDLPP::getSDLColorTuple( const std::tuple< int, int, int, int > &tuple ) {
    SDL_Color ret_color{};
    ret_color.r = std::get< 0 >( tuple );
    ret_color.g = std::get< 1 >( tuple );
    ret_color.b = std::get< 2 >( tuple );
    ret_color.a = std::get< 3 >( tuple );
    return ret_color;
}

SDL_Color SDLPP::getSDLColorHEX( const std::string &color ) {
    auto color_tuple = SDLPP::getColorsHEX( color );
    return getSDLColorTuple( color_tuple );
}

std::tuple< int, int, int, int >
SDLPP::getColorsSDLColor( const SDL_Color &color ) {
    return { color.r, color.g, color.b, color.a };
}

bool SDLPP::getSDLEvent( SDL_Event &e ) {
    if ( SDL_PeepEvents( &e, 1, SDL_PEEKEVENT, SDL_FIRSTEVENT,
                         SDL_LASTEVENT ) == 1 ) {
        SDL_PeepEvents( &e, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT );
        return true;
    }
    return false;
}