main.c

#include "SDL3/SDL_error.h"
#include "SDL3/SDL_render.h"
#include <SDL3/SDL.h>
#include <SDL3_ttf/SDL_ttf.h>
#include <stdio.h>
#include <string.h>

int main(int argc, char **argv) {
  SDL_Init(SDL_INIT_VIDEO);

  SDL_Window *window = SDL_CreateWindow("platformer", 1024, 768, SDL_WINDOW_RESIZABLE);
  SDL_Renderer *renderer = SDL_CreateRenderer(window, NULL);

  if (!TTF_Init()) {
    printf("Error initializing TTF: %s\n", SDL_GetError());
    return -1;
  }
  TTF_Font *font = TTF_OpenFont("assets/fonts/Roboto-Regular.ttf", 18.0f);
  if (!font) {
    printf("Error loading font: %s\n", SDL_GetError());
    return -1;
  }

  bool running = true;
  while (running) {
    SDL_Event event;
    while (SDL_PollEvent(&event)) {
      switch (event.type) {
      case SDL_EVENT_QUIT:
        running = false;
        break;
      case SDL_EVENT_KEY_DOWN:
        switch (event.key.key) {
        case SDLK_ESCAPE:
          running = false;
          break;
        }
        break;
      }
    }

    SDL_FRect rect = {200.0f, 200.0f, 50.0f, 50.0f};

    int width, height;
    SDL_GetRenderOutputSize(renderer, &width, &height);

    char buf[1024];
    memset(buf, 0, 1024);

    sprintf(buf, "Render Size: %d %d", width, height);

    SDL_Color textColor = {255, 255, 255, 255};
    SDL_Surface *text = TTF_RenderText_Blended(font, buf, 0, textColor);
    SDL_Texture *textTexture = SDL_CreateTextureFromSurface(renderer, text);
    float text_w = 0.0f, text_h = 0.0f;
    SDL_GetTextureSize(textTexture, &text_w, &text_h);
    SDL_FRect text_dst = {20.0f, 20.0f, text_w, text_h};

    SDL_SetRenderDrawColorFloat(renderer, 0.1f, 0.1f, 0.1f, 0.1f);
    SDL_RenderClear(renderer);

    SDL_SetRenderDrawColorFloat(renderer, 0.8f, 0.1f, 0.1f, 0.1f);
    SDL_RenderFillRect(renderer, &rect);

    SDL_RenderTexture(renderer, textTexture, NULL, &text_dst);

    SDL_RenderPresent(renderer);
  }

  TTF_Quit();
  SDL_Quit();
  return 0;
}