[ChatGPT][SDL2][커스텀 2D 게임 엔진 개발] C에서 자체 SDL기반 게임 엔진에 SDL2를 사용하는 기본 게임 루프의 예제 샘플
[ChatGPT][SDL2][커스텀 2D 게임 엔진 개발] C에서 자체 SDL기반 게임 엔진에 SDL2를 사용하는 기본 게임 루프의 예제 샘플
// Here is an example of a basic game loop using SDL2 for your own SDL Game engine in C
#include <SDL.h>
#include "engine.h"
int main(int argc, char* argv[]) {
// Initialize the engine
if (!engine_init()) {
printf("Error initializing engine: %s\n", SDL_GetError());
return 1;
}
// Main loop flag
int quit = 0;
// Event handler
SDL_Event e;
// While application is running
while (!quit) {
// Handle events on queue
while (SDL_PollEvent(&e) != 0) {
// User requests quit
if (e.type == SDL_QUIT) {
quit = 1;
}
// Pass event to engine
engine_handle_event(&e);
}
// Update the engine
engine_update();
// Render the engine
engine_render();
}
// Clean up the engine
engine_cleanup();
return 0;
}
/*
This example uses a separate engine.h file to initialize, update, render, handle events, and clean up the game engine.
*/
//======================================
//======================================
// You may need to provide the implementation of these functions in the engine.c file for example
bool engine_init()
{
// Initialize SDL and create window
if (SDL_Init(SDL_INIT_VIDEO) != 0)
return 0;
// Create window
window = SDL_CreateWindow("My Game", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_SHOWN);
if (!window)
return 0;
// Create renderer
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
if (!renderer)
return 0;
// Initialize other engine resources
// ...
return 1;
}
void engine_update()
{
// Update game logic and other engine resources
// ...
}
void engine_render()
{
// Clear screen
SDL_RenderClear(renderer);
// Render game objects and other engine resources
// ...
// Update the window
SDL_RenderPresent(renderer);
}
void engine_handle_event(SDL_Event* e)
{
// Handle input events and other engine events
// ...
}
void engine_cleanup()
{
// Clean up engine resources
// ...
// Destroy renderer
SDL_DestroyRenderer(renderer);
// Destroy window
SDL_DestroyWindow(window);
// Quit SDL subsystems
SDL_Quit();
}
/*
Keep in mind that this is just a simple example and there are many ways to organize and optimize a game engine depending on the needs of the specific game.
*/
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