#include <iostream>
#include <SDL.h>
#undef main

int main() {

	SDL_Init(SDL_INIT_EVERYTHING);
	SDL_Window * window;
	window = SDL_CreateWindow("PONG", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, 0);
 SDL_Renderer * renderer = SDL_CreateRenderer(window, -1, 0);
  SDL_Surface * pad = SDL_LoadBMP("pad1.bmp");
    SDL_Surface * bawl2 = SDL_LoadBMP("ball.bmp");
  SDL_Texture * texture = SDL_CreateTextureFromSurface(renderer,
        pad);
  SDL_Texture * texture2 = SDL_CreateTextureFromSurface(renderer,
        pad);
    SDL_Texture * ball2 = SDL_CreateTextureFromSurface(renderer,
        bawl2);
  SDL_Rect rcball2;
  	 rcball2.x = 300;
	 rcball2.y = 150;
	 rcball2.w = 20;
	 rcball2.h = 20;
  SDL_Rect rcpad2;
  	 rcpad2.x = 610;
	 rcpad2.y = 10;
	 rcpad2.w = 20;
	 rcpad2.h = 100;
  SDL_Rect rcpad;
  	 rcpad.x = 10;
	 rcpad.y = 10;
	 rcpad.w = 20;
	 rcpad.h = 100;

	 SDL_Event event;

	  int ballsd = 3;
	  int ballsdy = 0;
	  int pad1d = 0;
	  int pad2d =0;
	 bool running = true;
	 while (running) {
		rcball2.y -= ballsdy;
		 rcball2.x -= ballsd;
		 // left pad
		 	 if (rcball2.x < rcpad.x + rcpad.w ) {
				 if((rcball2.y < rcpad.y + rcpad.h) && (rcball2.y + rcball2.h > rcpad.y)){

					 if(pad1d == 1)
					 {
						 ballsdy = 1;
					 }
					  if(pad1d == 2)
					 {
						 ballsdy = -1;
					 }

					 ballsd = -3;
				 }
		 }

			 	 // right pad
		 	 if (rcball2.x + rcball2.w > rcpad2.x ) {
				 if((rcball2.y + rcball2.h > rcpad2.y ) && (rcball2.y < rcpad2.y + rcpad2.h)){

					 if(pad2d == 1)
					 {
						 ballsdy = -1;
					 }
					  if(pad2d == 2)
					 {
						 ballsdy = 1;
					 }

					 ballsd = 3;
				 }
		 }

			 if (rcball2.y < 0)
			 {
				 ballsdy *= -1;
			 }
			  if (rcball2.y + rcball2.h > 480)
			 {
				 ballsdy *= -1;
			 }

	 const int start_time_ms = SDL_GetTicks();
	 while (SDL_PollEvent(&event)) {
		 switch(event.type) {
		 case SDL_KEYDOWN:
			 if(event.key.keysym.sym == SDLK_ESCAPE) {
				 running = false ;

		}
			 	 if(event.key.keysym.sym == SDLK_a) {
				 rcpad.y -= 5;
				 pad1d = 2;

		}	 if(event.key.keysym.sym == SDLK_z) {
				rcpad.y += 5;
				pad1d = 1;

		}
				 if(event.key.keysym.sym == SDLK_UP) {
				 rcpad2.y -= 5;
				 pad2d = 1;

		}	 if(event.key.keysym.sym == SDLK_DOWN) {
				rcpad2.y += 5;
				pad2d = 2;

		}
			 break;
		 default:
			 break;
		 }
	 }
	 SDL_RenderClear(renderer);
	 SDL_RenderCopy(renderer, ball2, NULL, &rcball2);
        SDL_RenderCopy(renderer, texture, NULL, &rcpad);
		SDL_RenderCopy(renderer, texture2, NULL, &rcpad2);
        SDL_RenderPresent(renderer);

	  const int elapsed_time_ms = SDL_GetTicks() - start_time_ms;
		 SDL_Delay(1000 / 32 - elapsed_time_ms);
 }
	  SDL_DestroyTexture(texture);
    SDL_FreeSurface(pad);
    SDL_DestroyRenderer(renderer);
	 SDL_DestroyWindow(window);
	 SDL_Quit();
	 return 0;
}