platformer/main.cpp at main · KhalidObaide/platformer · GitHub

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#include <string>
#include <vector>
#include <unordered_map>
#include <SDL2/SDL.h>
#include "lib.h"

Coordinate SIZE = {720, 720};

int main() {
  SDL_Init(SDL_INIT_VIDEO);
  SDL_Window* window = SDL_CreateWindow(
    "Platformer",
    SDL_WINDOWPOS_CENTERED,
    SDL_WINDOWPOS_CENTERED,
    SIZE.x,
    SIZE.y,
    SDL_WINDOW_SHOWN
  );
  SDL_Renderer* renderer = SDL_CreateRenderer(
    window,
    -1,
    SDL_RENDERER_ACCELERATED
  );

  std::unordered_map<std::string, int> events_map;
  events_map["HOLD_KEY_RIGHT"] = 0;
  events_map["HOLD_KEY_LEFT"] = 0;
  events_map["HOLD_KEY_UP"] = 0;
  events_map["HOLD_MOUSE_BUTTON"] = 0;
  events_map["POS_MOUSE_X"] = 0;
  events_map["POS_MOUSE_Y"] = 0;

  Platform ground = Platform({0, SIZE.y-25}, {SIZE.x, 25}, false);
  Platform p1 = Platform({250, SIZE.y-75}, {100, 25});
  Platform p2 = Platform({400, SIZE.y-175}, {100, 25});
  Platform p3 = Platform({550, SIZE.y-75}, {100, 25});
  Platform p4 = Platform({600, SIZE.y-125}, {100, 25});
  std::vector<GameObject*> platforms = {&ground, &p1, &p2, &p3, &p4};
  Player player = Player({20, 10}, platforms);

  std::vector<GameObject*> gameobjects = {&ground, &p1, &p2, &p3, &p4, &player};
  // main loop
  bool running = true;
  while (running) {
    // events
    SDL_Event event;
    while (SDL_PollEvent(&event)) {
      switch (event.type) {
        case SDL_QUIT:
          running = false;
          break;
        case SDL_KEYDOWN:
          if (event.key.keysym.sym == SDLK_RIGHT) events_map["HOLD_KEY_RIGHT"] = 1;
          if (event.key.keysym.sym == SDLK_LEFT) events_map["HOLD_KEY_LEFT"] = 1;
          if (event.key.keysym.sym == SDLK_UP) events_map["HOLD_KEY_UP"] = 1;
          break;
        case SDL_KEYUP:
          if (event.key.keysym.sym == SDLK_RIGHT) events_map["HOLD_KEY_RIGHT"] = 0;
          if (event.key.keysym.sym == SDLK_LEFT) events_map["HOLD_KEY_LEFT"] = 0;
          if (event.key.keysym.sym == SDLK_UP) events_map["HOLD_KEY_UP"] = 0;
          break;
        case SDL_MOUSEMOTION:
          events_map["POS_MOUSE_X"] = event.motion.x;
          events_map["POS_MOUSE_Y"] = event.motion.y;
          break;
        case SDL_MOUSEBUTTONDOWN:
          events_map["HOLD_MOUSE_BUTTON"] = 1;
          break;
        case SDL_MOUSEBUTTONUP:
          events_map["HOLD_MOUSE_BUTTON"] = 0;
          break;
        default:
          break;
      }
    }

    // render
    SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
    SDL_RenderClear(renderer);
    for (int i=0; i<static_cast<int>(gameobjects.size()); i++){
      GameObject* gp = gameobjects[i];
      gp->update(&events_map);
      SDL_Rect rect = {gp->position.x, gp->position.y, gp->size.x, gp->size.y};
      SDL_SetRenderDrawColor(
        renderer, gp->fill.r, gp->fill.g, gp->fill.b, gp->fill.a
      );
      SDL_RenderFillRect(renderer, &rect);
    }
    SDL_RenderPresent(renderer);
    SDL_Delay(1000 / 60); // Cap at 60 FPS
  }

  // clean up
  SDL_DestroyRenderer(renderer);
  SDL_DestroyWindow(window);
  SDL_Quit();
  return 0;
}