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#include <texture.hpp>
#include <algorithm>
#include <string>
#include <stdexcept>
#include <SDL2/SDL_image.h>
#include <config.hpp>
#include <debug.hpp>
#include <error.hpp>
namespace Colors
{
ColorTex white;
ColorTex black;
ColorTex red;
ColorTex blue;
GLfloat texCoord[12] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
void init(void) {
white = ColorTex(Color(255, 255, 255));
black = ColorTex(Color(0, 0, 0 ));
red = ColorTex(Color(255, 0, 0 ));
blue = ColorTex(Color(0, 0, 255));
}
}
void loadTexture(const std::string& file, Texture& texture);
Texture::Texture(const std::string& file, const GLuint& t, const vec2& v)
: name(file), tex(t), dim(v)
{
if (t == 0xFFFFF && !file.empty())
loadTexture(file, *this);
}
Texture::Texture(const std::string& file, bool hline)
{
loadTexture(file, *this);
if (hline)
dim /= game::HLINE;
}
const std::string& Texture::getName(void) const
{
return name;
}
const vec2& Texture::getDim(void) const
{
return dim;
}
ColorTex::ColorTex(void)
{
Texture();
}
ColorTex::ColorTex(const Color& color)
{
unsigned char data[4] = {
static_cast<unsigned char>(color.red),
static_cast<unsigned char>(color.green),
static_cast<unsigned char>(color.blue),
static_cast<unsigned char>(color.alpha),
};
GLuint object;
glGenTextures(1, &object); // Turns "object" into a texture
glBindTexture(GL_TEXTURE_2D, object); // Binds "object" to the top of the stack
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
tex = object;
dim = vec2(1, 1);
}
static std::vector<Texture> loadedTextures;
void loadTexture(const std::string& file, Texture& texture)
{
auto preloaded =
std::find_if(std::begin(loadedTextures), std::end(loadedTextures),
[&file](const Texture& t) { return (t.getName() == file); });
if (preloaded == std::end(loadedTextures)) {
auto image = IMG_Load(file.c_str());
UserAssert(image != nullptr, "File not found: " + file);
#ifdef DEBUG
DEBUG_printf("Loaded image file: %s\n", file.c_str());
#endif // DEBUG
// load texture through OpenGL
GLuint object;
glGenTextures(1, &object); // Turns "object" into a texture
glBindTexture(GL_TEXTURE_2D, object); // Binds "object" to the top of the stack
glPixelStoref(GL_UNPACK_ALIGNMENT, 1);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); // Sets the "min" filter
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); // The the "max" filter of the stack
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); // Wrap the texture to the matrix
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); //
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image->w, image->h, 0,
GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
// add texture to loadedTextures
loadedTextures.emplace_back(file, object, vec2(image->w, image->h));
texture = loadedTextures.back();
// free the SDL_Surface
SDL_FreeSurface(image);
} else {
texture = *preloaded;
}
}
TextureIterator::TextureIterator(const std::vector<std::string> &l)
{
for (const auto& s : l)
textures.emplace_back(s);
position = std::begin(textures);
}
void TextureIterator::operator++(int) noexcept
{
if (++position >= std::end(textures))
position = std::end(textures) - 1;
position->use();
}
void TextureIterator::operator--(int) noexcept
{
if (--position < std::begin(textures))
position = std::begin(textures);
position->use();
}
void TextureIterator::operator()(const int &index)
{
if (index < 0 || index > static_cast<int>(textures.size()))
throw std::invalid_argument("texture index out of range");
position = std::begin(textures) + index;
position->use();
}
void unloadTextures(void)
{
while (!loadedTextures.empty()) {
loadedTextures.back().destroy();
loadedTextures.pop_back();
}
}
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