#include <hge.h>
#include "hgesprite.h"
#include "hgevector.h"
#define BACKGROUND_SCROLLING_SPEED 0.105f

HGE *hge = 0;

// Задний фон

HTEXTURE g_tBackground = 0; // Задний фон
HTEXTURE g_tOblaka     = 0; // Облака

hgeSprite* g_sBackground = NULL;
hgeSprite* g_sOblaka     = NULL;

hgeVector  g_vBGPosition  = hgeVector(0,0);

bool FrameFunc()
{
  if(g_vBGPosition.x < 800) g_vBGPosition.x += BACKGROUND_SCROLLING_SPEED;
  else g_vBGPosition = hgeVector(-982,0);
   
     if (hge->Input_GetKeyState(HGEK_ESCAPE)) return true;

     return false;
}

bool RenderFunc()
{
     hge->Gfx_BeginScene();
     hge->Gfx_Clear(0);
     g_sBackground->Render(g_vBGPosition.x,g_vBGPosition.y);
  if(g_vBGPosition.x > -1) g_sBackground->Render(g_vBGPosition.x - 982 - 800, 0);
  g_sOblaka->Render(g_vBGPosition.x,g_vBGPosition.y);
  if(g_vBGPosition.x > -1) g_sOblaka->Render(g_vBGPosition.x - 982 - 800, 0);
     hge->Gfx_EndScene();
     return false;
}

int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
{
      
     hge = hgeCreate(HGE_VERSION);
     hge->System_SetState(HGE_FRAMEFUNC, FrameFunc);
  hge->System_SetState(HGE_RENDERFUNC, RenderFunc);
     hge->System_SetState(HGE_TITLE, "Son ADVENTURE");
     hge->System_SetState(HGE_WINDOWED, true);
     hge->System_SetState(HGE_USESOUND, false);
      
      
     if(hge->System_Initiate())
     {
   g_tBackground  = hge->Texture_Load("images/farback.jpg");
   g_tOblaka      = hge->Texture_Load("images/oblaka.png");

         g_sBackground  = new hgeSprite(g_tBackground, 0, 0, 1782, 600);
   g_sOblaka      = new hgeSprite(g_tOblaka, 0, 0, 1782, 600);

   g_vBGPosition  = hgeVector(-982, 0);

         hge->System_Start();

   hge->Texture_Free(g_tBackground);
     hge->Texture_Free(g_tOblaka);
   
     delete g_sBackground;
     delete g_sOblaka;

     }
     else
     {     
          
         MessageBox(NULL, hge->System_GetErrorMessage(), "Error", MB_OK | MB_ICONERROR | MB_APPLMODAL);
     }
      
      
     hge->System_Shutdown();
      
     
     hge->Release();
      
     return 0;
}