Texture.h

#ifndef TEXTURE_H
#define TEXTURE_H

#include <iostream>

#include <glad\glad.h>
#include "stb_image.h"

class Texture {
public:
    unsigned int ID;

    Texture(const char* path) {
        glGenTextures(1, &ID);
        glBindTexture(GL_TEXTURE_2D, ID);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

        int width, height, nChannels;
        stbi_set_flip_vertically_on_load(true);
        unsigned char* data = stbi_load(path, &width, &height, &nChannels, STBI_rgb_alpha);

        if (!data) {
            std::cout << "Failed to load texture from path \"" << path << "\", substituting." << std::endl;
            data = stbi_load("res/imgNotFound.png", &width, &height, &nChannels, STBI_rgb_alpha);
        } else {
            std::cout << "Loaded image from \"" << path << "\" into texture of ID " << ID << "." << std::endl;
        }

        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
        glGenerateMipmap(GL_TEXTURE_2D);

        stbi_image_free(data);
    };

    void bindToTexUnit(int texUnit) {
        glActiveTexture(GL_TEXTURE0 + texUnit);
        glBindTexture(GL_TEXTURE_2D, ID);
    };

    void destroy() {
        std::cout << "Deleted texture with ID " << ID << "." << std::endl;
        glDeleteTextures(1, &ID);
    };
};

#endif