I am trying to pass a const std::function<void()> & as void * to SDL_AddTimer, which its 3rd parameter is void *. I tried with reinterpret_cast SDL_AddTimer(interval, wrapper, reinterpret_cast<void *>(const_cast<std::function<void()> *>(fn))); But on my wrapper, it crashes uint32_t wrapper(uint32_t interval, void *param) { auto fn = static_cast<std::function<void()> *>(param); (*fn)(); // crashes here. return interval; } What… Read More Pass const std::function<void()> as parameter in SDL_AddTimer as void*

I’m currently following Lets Make Games’ tutorial series for making a game in C++ with SDL2. In the episode, he uses this method to create a texture: SDL_Renderer* renderer; SDL_Texture* tex; SDL_Surface* tmpSurface = IMG_LOAD("name") tex = SDL_CreateTextureFromSurface(renderer, tmp); SDL_FreeSurface(tmpSurface); I was a little confused about this when I saw it in the video, as… Read More Fastest way to load a texture in C++ with SDL2

So, I am learning SDL 2 and using it with vscode, this is my file structure in the miain.cpp file this is my code: #include <game.h> int main(int argc, char* argv[]){ int screenWidth = 1024; int screenHight = 600; Game game("Game", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, screenWidth, screenHight, SDL_WINDOW_SHOWN); while(game.gameState != GameState::EXIT){ SDL_Event evnt; SDL_PollEvent(&evnt); switch (evnt.type){ case… Read More game.h no such file or directory when using SDL with VScode

I tried drawing a ‘1’ texture at mouse coordinates when I press the 1 key: switch (e.type) { case SDL_QUIT: { quit = true; break; } case SDL_KEYDOWN: { switch (e.key.keysym.sym) { case SDLK_1: { SDL_Rect rect = {e.motion.x – 8, e.motion.y – 8, 16, 16}; SDL_RenderCopy(gRenderer, gT[3], NULL, &rect); printf("1\n"); break; } } break;… Read More Texture drawn at wrong coordinates?

Today I was writing some SDL C++ program, with squares called particles. My problem is that, for some reason, variable y in instances of class Particle is always resetting to the value passed into the constructor after incrementing it by 1. I’m storing objects in a list. That’s a method called every frame: void everyFrame(){… Read More Variable resetting problem in a list of objects