#include <stdlib.h>

#include "Weather.h"
#include "Viewport.h"
#include "Render.h"

#include "mm7_data.h"   ////TODO: remove this once LOWORD/HIWRD stuff is refactored




struct Weather *pWeather = new Weather;



//----- (004C2AA6) --------------------------------------------------------
int Weather::DrawSnow()
{

//  if (!FORCE_16_BITS)
  //  __debugbreak(); // function expects 16bit target buffer, will fail otherwise
  for ( uint i = 0; i < 700; ++i )
  {
    int x = 2 * i;
    int y = 2 * i + 1;
    this->Screen_Coord[x] += rand() % 3 + 1;
    this->Screen_Coord[y] += rand() % 2 + 1;
    if ( this->Screen_Coord[x] < (signed int)(viewparams->uScreen_BttmR_X - 1) )//467
    {
      if ( this->Screen_Coord[x] < (signed int)viewparams->uScreen_topL_X )//8
        this->Screen_Coord[x] = viewparams->uScreen_BttmR_X - rand() % 8;
    }
    else
      this->Screen_Coord[x] = viewparams->uScreen_topL_X + rand() % 8;
    if ( this->Screen_Coord[y] < (signed int)viewparams->uScreen_topL_Y//8
      || this->Screen_Coord[y] >= (signed int)viewparams->uScreen_BttmR_Y )//351
    {
      this->Screen_Coord[y] = viewparams->uScreen_topL_Y;
      this->Screen_Coord[x] = viewparams->uScreen_topL_X + (rand() % (signed int)((viewparams->uScreen_BttmR_X - viewparams->uScreen_topL_X) - 2));
    }
    //v1[this->Screen_Coord[2 * i] + 640 * this->Screen_Coord[2 * i + 1]] = 0xFFFFu;
    pRenderer->WritePixel16(this->Screen_Coord[x], this->Screen_Coord[y], 0xFFFF);//snowflake - point(снежинка - точка)
  }

  for ( uint i = 700; i < 950; ++i )
  {
    int x = 2 * i;
    int y = 2 * i + 1;
    this->Screen_Coord[x] += rand() % 5 - 3;//x
    this->Screen_Coord[y] += 4;//y
    if ( this->Screen_Coord[x] < (signed int)viewparams->uScreen_topL_X )
      this->Screen_Coord[x] = viewparams->uScreen_BttmR_X - rand() % 4 - 2;
    if ( this->Screen_Coord[x] >= (signed int)(viewparams->uScreen_BttmR_X - 2) )
      this->Screen_Coord[x] = rand() % 4 + viewparams->uScreen_topL_X + 2;
    if ( this->Screen_Coord[y] < (signed int)viewparams->uScreen_topL_Y || this->Screen_Coord[y] >= (signed int)(viewparams->uScreen_BttmR_Y - 1) )
    {
      this->Screen_Coord[y] = viewparams->uScreen_topL_Y;
      this->Screen_Coord[x] = viewparams->uScreen_topL_X + (rand() % (signed int)((viewparams->uScreen_BttmR_X - viewparams->uScreen_topL_X) - 2));
    }
	pRenderer->WritePixel16(this->Screen_Coord[x],     this->Screen_Coord[y],     0xFFFF);//x, y  квадратная снежинка)
	pRenderer->WritePixel16(this->Screen_Coord[x] + 1, this->Screen_Coord[y],     0xFFFF);//x + 1, y
	pRenderer->WritePixel16(this->Screen_Coord[x],     this->Screen_Coord[y] + 1, 0xFFFF);//x , y + 1
	pRenderer->WritePixel16(this->Screen_Coord[x] + 1, this->Screen_Coord[y] + 1, 0xFFFF);//x + 1, y + 1

    //v1[this->Screen_Coord[2 * i] + 640 * this->Screen_Coord[2 * i + 1]] = 0xFFFFu;
    //v1[this->Screen_Coord[2 * i] + 640 * this->Screen_Coord[2 * i + 1] + 1] = 0xFFFFu;
    //v1[this->Screen_Coord[2 * i] + 640 * (this->Screen_Coord[2 * i + 1] + 1)] = 0xFFFFu;
    //v1[this->Screen_Coord[2 * i] + 640 * this->Screen_Coord[2 * i + 1] + 641] = 0xFFFFu;
  }

  for ( uint i = 0; i < 50; i++)
  {
    this->Screen_Coord[1901 + (i * 2)] += 8;
    this->Screen_Coord[1901 + ((i * 2) -1)] += rand() % 11 - 5;
    if ( this->Screen_Coord[1901 + ((i * 2) -1)] < (signed int)viewparams->uScreen_topL_X || this->Screen_Coord[1901 + ((i * 2) -1)] >= (signed int)(viewparams->uScreen_BttmR_X - 5) )
    {
      this->Screen_Coord[1901 + (i * 2)] = viewparams->uScreen_topL_Y;
      this->Screen_Coord[1901 + ((i * 2) -1)] = viewparams->uScreen_topL_X + (rand() % (signed int)((viewparams->uScreen_BttmR_X - viewparams->uScreen_topL_X) - 5));
    }
    if ( this->Screen_Coord[1901 + (i * 2)] < (signed int)viewparams->uScreen_topL_Y || this->Screen_Coord[1901 + (i * 2)] >= (signed int)(viewparams->uScreen_BttmR_Y - 5) )
    {
      this->Screen_Coord[1901 + (i * 2)] = viewparams->uScreen_topL_Y;
      this->Screen_Coord[1901 + ((i * 2) -1)] = viewparams->uScreen_topL_X + (rand() % (signed int)((viewparams->uScreen_BttmR_X - viewparams->uScreen_topL_X) - 5));
    }
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)], this->Screen_Coord[1901 + (i * 2)], 0xFFFF);//x, y
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)], this->Screen_Coord[1901 + (i * 2)] + 1, 0xFFFF);//x, y + 1
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)], this->Screen_Coord[1901 + (i * 2)] + 2, 0xFFFF);//x, y + 2
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)], this->Screen_Coord[1901 + (i * 2)] + 3, 0xFFFF);//x, y + 3

	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 1, this->Screen_Coord[1901 + (i * 2)], 0xFFFF);//x + 1, y
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 1, this->Screen_Coord[1901 + (i * 2)] + 1, 0xFFFF);//x + 1, y + 1
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 1, this->Screen_Coord[1901 + (i * 2)] + 2, 0xFFFF);//x + 1, y + 2
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 1, this->Screen_Coord[1901 + (i * 2)] + 3, 0xFFFF);//x + 1, y + 3

	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 2, this->Screen_Coord[1901 + (i * 2)], 0xFFFF);//x + 2, y
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 2, this->Screen_Coord[1901 + (i * 2)] + 1, 0xFFFF);//x + 2, y + 1
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 2, this->Screen_Coord[1901 + (i * 2)] + 2, 0xFFFF);//x + 2, y + 2
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 2, this->Screen_Coord[1901 + (i * 2)] + 3, 0xFFFF);//x + 2, y + 3

	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 3, this->Screen_Coord[1901 + (i * 2)], 0xFFFF);//x + 3, y
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 3, this->Screen_Coord[1901 + (i * 2)] + 1, 0xFFFF);//x + 3, y + 1
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 3, this->Screen_Coord[1901 + (i * 2)] + 2, 0xFFFF);//x + 3, y + 2
	pRenderer->WritePixel16(this->Screen_Coord[1901 + ((i * 2) -1)] + 3, this->Screen_Coord[1901 + (i * 2)] + 3, 0xFFFF);//x + 3, y + 3

    //v1[this->Screen_Coord[1901 + ((i * 2) -1)] + 640 * this->Screen_Coord[1901 + (i * 2)]] = 0xFFFFu;//x, y
    //v1[this->Screen_Coord[1901 + ((i * 2) -1)] + 640 * (this->Screen_Coord[1901 + (i * 2)] + 1)] = 0xFFFFu;//x, y + 1
    //v1[this->Screen_Coord[1901 + ((i * 2) -1)] + 640 * (this->Screen_Coord[1901 + (i * 2)] + 2)] = 0xFFFFu;//x, y + 2
    //v1[this->Screen_Coord[1901 + ((i * 2) -1)] + 640 * (this->Screen_Coord[1901 + (i * 2)] + 3)] = 0xFFFFu;//x, y + 3

    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 1] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y, x + 1
    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 641] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y + 1, x + 1
    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 1281] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y + 2, x + 1
    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 1921] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y + 3, x + 1

    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 2] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y, x + 2
    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 642] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y + 1, x + 2
    //*(&v1[128 * (5 * this->Screen_Coord[1901 + (i * 2)]) + 1282] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y + 2, x + 2
    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 1922] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y + 3, x + 2

    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 3] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y, x + 3
    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 643] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y + 1, x + 3
    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 1283] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y + 2, x + 3
    //*(&v1[640 * this->Screen_Coord[1901 + (i * 2)] + 1923] + this->Screen_Coord[1901 + ((i * 2) -1)]) = 0xFFFFu;//y + 3, x + 3
  }
  return 0;
}

//----- (004C2EA0) --------------------------------------------------------
int Weather::Initialize()
{
  signed int v3; // ebx@1
  signed int v4; // ebp@1

  v3 = pViewport->uScreen_BR_X - pViewport->uScreen_TL_X - 4;
  v4 = pViewport->uScreen_BR_Y - pViewport->uScreen_TL_Y - 4;
  for ( uint i = 0; i < 1000; i++ )
  {
    this->Screen_Coord[2 * i] = LOWORD(pViewport->uViewportTL_X) + rand() % v3;
    this->Screen_Coord[(2 * (i + 1)) - 1] = LOWORD(pViewport->uViewportTL_Y) + rand() % v4;
  }
  return 0;
}

//----- (004C2EFA) --------------------------------------------------------
int Weather::Draw()
{
  if (bRenderSnow)
    DrawSnow();
  return 0;
}

//----- (004C2F0B) --------------------------------------------------------
bool Weather::OnPlayerTurn(__int16 a2)
{
  unsigned int screen_width; // esi@3

  if ( this->bRenderSnow != true )
    return 0;
  screen_width = viewparams->uScreen_BttmR_X - viewparams->uScreen_topL_X;

  for ( uint i = 0; i < 1000; ++i )
  {
    this->Screen_Coord[2 * i] += a2;
    if ( this->Screen_Coord[2 * i] < (signed int)viewparams->uScreen_BttmR_X - 4 )
    {
      if ( this->Screen_Coord[2 * i] >= (signed int)viewparams->uScreen_topL_X )
        continue;
      this->Screen_Coord[2 * i] += screen_width;
    }
    else
      this->Screen_Coord[2 * i] = this->Screen_Coord[2 * i] - screen_width + 4;
  }
  return 1;
}