/*
** shared_sbar.cpp
** Base status bar implementation
**
**---------------------------------------------------------------------------
** Copyright 1998-2006 Randy Heit
** Copyright 2017 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/

#include <assert.h>

#include "templates.h"
#include "statusbar.h"
#include "c_cvars.h"
#include "c_dispatch.h"
#include "c_console.h"
#include "v_video.h"
#include "filesystem.h"
#include "s_soundinternal.h"
#include "serializer.h"
#include "serialize_obj.h"
#include "cmdlib.h"
#include "vm.h"
#include "gstrings.h"
#include "utf8.h"
#include "texturemanager.h"
#include "cmdlib.h"
#include "v_draw.h"
#include "v_font.h"
#include "v_draw.h"

#include "../version.h"

#define XHAIRSHRINKSIZE		(1./18)
#define XHAIRPICKUPSIZE		(2+XHAIRSHRINKSIZE)
#define POWERUPICONSIZE		32

//IMPLEMENT_CLASS(DHUDFont, true, false);

EXTERN_CVAR (Bool, am_showmonsters)
EXTERN_CVAR (Bool, am_showsecrets)
EXTERN_CVAR (Bool, am_showitems)
EXTERN_CVAR (Bool, am_showtime)
EXTERN_CVAR (Bool, am_showtotaltime)
EXTERN_CVAR (Bool, noisedebug)
EXTERN_CVAR (Int, con_scaletext)
EXTERN_CVAR(Bool, vid_fps)
EXTERN_CVAR(Bool, inter_subtitles)
CVAR(Int, newhud_scale, 1, CVAR_ARCHIVE)
CVAR(Bool, log_vgafont, false, CVAR_ARCHIVE)

DBaseStatusBar *StatusBar;

extern int setblocks;

FGameTexture *CrosshairImage;
static int CrosshairNum;


// Stretch status bar to full screen width?
CUSTOM_CVAR (Int, st_scale, 0, CVAR_ARCHIVE)
{
	if (self < -1)
	{
		self = -1;
		return;
	}
	if (StatusBar)
	{
		StatusBar->SetScale();
		setsizeneeded = true;
	}
}
CUSTOM_CVAR(Bool, hud_aspectscale, false, CVAR_ARCHIVE)
{
	if (StatusBar)
	{
		StatusBar->SetScale();
		setsizeneeded = true;
	}
}

CVAR (Bool, crosshairon, true, CVAR_ARCHIVE);
CVAR (Int, crosshair, 0, CVAR_ARCHIVE)
CVAR (Bool, crosshairforce, false, CVAR_ARCHIVE)
CVAR (Color, crosshaircolor, 0xff0000, CVAR_ARCHIVE);
CVAR (Int, crosshairhealth, 1, CVAR_ARCHIVE);
CVAR (Float, crosshairscale, 1.0, CVAR_ARCHIVE);
CVAR (Bool, crosshairgrow, false, CVAR_ARCHIVE);
CUSTOM_CVAR(Int, am_showmaplabel, 2, CVAR_ARCHIVE)
{
	if (self < 0 || self > 2) self = 2;
}

CVAR (Bool, idmypos, false, 0);


//---------------------------------------------------------------------------
//
// ST_Clear
//
//---------------------------------------------------------------------------

void ST_Clear()
{
	if (StatusBar != NULL)
	{
		delete StatusBar;
		StatusBar = NULL;
	}
	CrosshairImage = NULL;
	CrosshairNum = 0;
}

//---------------------------------------------------------------------------
//
// Constructor
//
//---------------------------------------------------------------------------
DBaseStatusBar::DBaseStatusBar ()
{
	CompleteBorder = false;
	Centering = false;
	FixedOrigin = false;
	CrosshairSize = 1.;
	Displacement = 0;
	ShowLog = false;
	defaultScale = { (double)CleanXfac, (double)CleanYfac };
	SetSize(0);
}

static void ValidateResolution(int &hres, int &vres)
{
	if (hres == 0)
	{
		static const int HORIZONTAL_RESOLUTION_DEFAULT = 320;
		hres = HORIZONTAL_RESOLUTION_DEFAULT;
	}

	if (vres == 0)
	{
		static const int VERTICAL_RESOLUTION_DEFAULT = 200;
		vres = VERTICAL_RESOLUTION_DEFAULT;
	}
}

void DBaseStatusBar::SetSize(int reltop, int hres, int vres, int hhres, int hvres)
{
	ValidateResolution(hres, vres);

	BaseRelTop = reltop;
	BaseSBarHorizontalResolution = hres;
	BaseSBarVerticalResolution = vres;
	BaseHUDHorizontalResolution = hhres < 0? hres : hhres;
	BaseHUDVerticalResolution = hvres < 0? vres : hvres;
	SetDrawSize(reltop, hres, vres);
}

static void ST_CalcCleanFacs(int designwidth, int designheight, int realwidth, int realheight, int *cleanx, int *cleany)
{
	float ratio;
	int cwidth;
	int cheight;
	int cx1, cy1, cx2, cy2;

	ratio = ActiveRatio(realwidth, realheight);
	if (AspectTallerThanWide(ratio))
	{
		cwidth = realwidth;
		cheight = realheight * AspectMultiplier(ratio) / 48;
	}
	else
	{
		cwidth = realwidth * AspectMultiplier(ratio) / 48;
		cheight = realheight;
	}
	// Use whichever pair of cwidth/cheight or width/height that produces less difference
	// between CleanXfac and CleanYfac.
	cx1 = MAX(cwidth / designwidth, 1);
	cy1 = MAX(cheight / designheight, 1);
	cx2 = MAX(realwidth / designwidth, 1);
	cy2 = MAX(realheight / designheight, 1);
	if (abs(cx1 - cy1) <= abs(cx2 - cy2) || MAX(cx1, cx2) >= 4)
	{ // e.g. 640x360 looks better with this.
		*cleanx = cx1;
		*cleany = cy1;
	}
	else
	{ // e.g. 720x480 looks better with this.
		*cleanx = cx2;
		*cleany = cy2;
	}

	if (*cleanx < *cleany)
		*cleany = *cleanx;
	else
		*cleanx = *cleany;
}

void DBaseStatusBar::SetDrawSize(int reltop, int hres, int vres)
{
	ValidateResolution(hres, vres);

	RelTop = reltop;
	HorizontalResolution = hres;
	VerticalResolution = vres;
	int x, y;
	ST_CalcCleanFacs(hres, vres, SCREENWIDTH, SCREENHEIGHT, &x, &y);
	defaultScale = { (double)x, (double)y };

	SetScale();	// recalculate positioning info.
}

//---------------------------------------------------------------------------
//
// PROC SetScaled
//
//---------------------------------------------------------------------------

void DBaseStatusBar::SetScale ()
{
	ValidateResolution(HorizontalResolution, VerticalResolution);

	int w = SCREENWIDTH;
	int h = SCREENHEIGHT;
	if (st_scale < 0 || ForcedScale)
	{
		// This is the classic fullscreen scale with aspect ratio compensation.
		int sby = VerticalResolution - RelTop;
		float aspect = ActiveRatio(w, h);
		if (!AspectTallerThanWide(aspect))
		{ 
			// Wider or equal than 4:3 
			SBarTop = Scale(sby, h, VerticalResolution);
			double width4_3 = w * 1.333 / aspect;
			ST_X = int((w - width4_3) / 2);
		}
		else
		{ // 5:4 resolution
			ST_X = 0;

			// this was far more obtuse before...
			double height4_3 = h * aspect / 1.333;
			SBarTop = int(h - height4_3 + sby * height4_3 / VerticalResolution);
		}
		Displacement = 0;
		SBarScale.X = -1;
		ST_Y = 0;
	}
	else
	{
		// Since status bars and HUDs can be designed for non 320x200 screens this needs to be factored in here.
		// The global scaling factors are for resources at 320x200, so if the actual ones are higher resolution
		// the resulting scaling factor needs to be reduced accordingly.
		int realscale = clamp((320 * GetUIScale(twod, st_scale)) / HorizontalResolution, 1, w / HorizontalResolution);

		double realscaley = realscale * (hud_aspectscale ? 1.2 : 1.);

		ST_X = (w - HorizontalResolution * realscale) / 2;
		SBarTop = int(h - RelTop * realscaley);
		if (RelTop > 0)
		{
			Displacement = double((SBarTop * VerticalResolution / h) - (VerticalResolution - RelTop))/RelTop/realscaley;
		}
		else
		{
			Displacement = 0;
		}
		SBarScale.X = realscale;
		SBarScale.Y = realscaley;
		ST_Y = int(h - VerticalResolution * realscaley);
	}
}

//---------------------------------------------------------------------------
//
// PROC GetHUDScale
//
//---------------------------------------------------------------------------

DVector2 DBaseStatusBar::GetHUDScale() const
{
	int scale;
	if (newhud_scale < 0 || ForcedScale)	// a negative value is the equivalent to the old boolean hud_scale. This can yield different values for x and y for higher resolutions.
	{
		return defaultScale;
	}
	scale = GetUIScale(twod, newhud_scale);

	int hres = HorizontalResolution;
	int vres = VerticalResolution;
	ValidateResolution(hres, vres);

	// Since status bars and HUDs can be designed for non 320x200 screens this needs to be factored in here.
	// The global scaling factors are for resources at 320x200, so if the actual ones are higher resolution
	// the resulting scaling factor needs to be reduced accordingly.
	int realscale = MAX<int>(1, (320 * scale) / hres);
	return{ double(realscale), double(realscale * (hud_aspectscale ? 1.2 : 1.)) };
}

//---------------------------------------------------------------------------
//
//  
//
//---------------------------------------------------------------------------

void DBaseStatusBar::BeginStatusBar(int resW, int resH, int relTop, bool forceScaled)
{
	SetDrawSize(relTop < 0? BaseRelTop : relTop, resW < 0? BaseSBarHorizontalResolution : resW, resH < 0? BaseSBarVerticalResolution : resH);
	ForcedScale = forceScaled;
	fullscreenOffsets = false;
}

//---------------------------------------------------------------------------
//
//  
//
//---------------------------------------------------------------------------

void DBaseStatusBar::BeginHUD(int resW, int resH, double Alpha, bool forcescaled)
{
	SetDrawSize(RelTop, resW < 0? BaseHUDHorizontalResolution : resW, resH < 0? BaseHUDVerticalResolution : resH);	
	this->Alpha = Alpha;
	ForcedScale = forcescaled;
	CompleteBorder = false;
	fullscreenOffsets = true;
}

//---------------------------------------------------------------------------
//
// PROC Tick
//
//---------------------------------------------------------------------------

void DBaseStatusBar::Tick ()
{
	if (artiflashTick > 0)
		artiflashTick--;

	if (itemflashFade > 0)
	{
		itemflashFade -= 1 / 14.;
		if (itemflashFade < 0)
		{
			itemflashFade = 0;
		}
	}

}

//============================================================================
//
// draw stuff
//
//============================================================================

void DBaseStatusBar::StatusbarToRealCoords(double &x, double &y, double &w, double &h) const
{
	if (SBarScale.X == -1 || ForcedScale)
	{
		int hres = HorizontalResolution;
		int vres = VerticalResolution;
		ValidateResolution(hres, vres);

		VirtualToRealCoords(twod, x, y, w, h, hres, vres, true);
	}
	else
	{
		x = ST_X + x * SBarScale.X;
		y = ST_Y + y * SBarScale.Y;
		w *= SBarScale.X;
		h *= SBarScale.Y;
	}
}

//============================================================================
//
// draw stuff
//
//============================================================================

void DBaseStatusBar::DrawGraphic(FTextureID texture, double x, double y, int flags, double Alpha, double boxwidth, double boxheight, double scaleX, double scaleY, PalEntry color, int translation)
{
	if (!texture.isValid())
		return;

	FGameTexture* tex = TexMan.GetGameTexture(texture, !(flags & DI_DONTANIMATE));
	DrawGraphic(tex, x, y, flags, Alpha, boxwidth, boxheight, scaleX, scaleY, color, translation);
}

void DBaseStatusBar::DrawGraphic(FGameTexture* tex, double x, double y, int flags, double Alpha, double boxwidth, double boxheight, double scaleX, double scaleY, PalEntry color, int translation)
{
	double texwidth = tex->GetDisplayWidth() * scaleX;
	double texheight = tex->GetDisplayHeight() * scaleY;

	if (boxwidth > 0 || boxheight > 0)
	{
		if (!(flags & DI_FORCEFILL))
		{
			double scale1 = 1., scale2 = 1.;

			if (boxwidth > 0 && (boxwidth < texwidth || (flags & DI_FORCESCALE)))
			{
				scale1 = boxwidth / texwidth;
			}
			if (boxheight != -1 && (boxheight < texheight || (flags & DI_FORCESCALE)))
			{
				scale2 = boxheight / texheight;
			}

			if (flags & DI_FORCESCALE)
			{
				if (boxwidth <= 0 || (boxheight > 0 && scale2 < scale1))
					scale1 = scale2;
			}
			else scale1 = MIN(scale1, scale2);

			boxwidth = texwidth * scale1;
			boxheight = texheight * scale1;
		}
	}
	else
	{
		boxwidth = texwidth;
		boxheight = texheight;
	}

	// resolve auto-alignment before making any adjustments to the position values.
	if (!(flags & DI_SCREEN_MANUAL_ALIGN))
	{
		if (x < 0) flags |= DI_SCREEN_RIGHT;
		else flags |= DI_SCREEN_LEFT;
		if (y < 0) flags |= DI_SCREEN_BOTTOM;
		else flags |= DI_SCREEN_TOP;
	}

	Alpha *= this->Alpha;
	if (Alpha <= 0) return;
	x += drawOffset.X;
	y += drawOffset.Y;

	double xo = 0, yo = 0;
	switch (flags & DI_ITEM_HMASK)
	{
	case DI_ITEM_HCENTER:	xo = texwidth / 2; break;
	case DI_ITEM_RIGHT:		xo = texwidth; break;
	case DI_ITEM_HOFFSET:	xo = tex->GetDisplayLeftOffset(); break;
	}

	switch (flags & DI_ITEM_VMASK)
	{
	case DI_ITEM_VCENTER: yo = texheight / 2; break;
	case DI_ITEM_BOTTOM:  yo = texheight; break;
	case DI_ITEM_VOFFSET: yo = tex->GetDisplayTopOffset(); break;
	}

	if (!fullscreenOffsets)
	{
		StatusbarToRealCoords(x, y, boxwidth, boxheight);
	}
	else
	{
		double orgx, orgy;

		switch (flags & DI_SCREEN_HMASK)
		{
		default: orgx = 0; break;
		case DI_SCREEN_HCENTER: orgx = screen->GetWidth() / 2; break;
		case DI_SCREEN_RIGHT:   orgx = screen->GetWidth(); break;
		}

		switch (flags & DI_SCREEN_VMASK)
		{
		default: orgy = 0; break;
		case DI_SCREEN_VCENTER: orgy = screen->GetHeight() / 2; break;
		case DI_SCREEN_BOTTOM: orgy = screen->GetHeight(); break;
		}

		// move stuff in the top right corner a bit down if the fps counter is on.
		if ((flags & (DI_SCREEN_HMASK|DI_SCREEN_VMASK)) == DI_SCREEN_RIGHT_TOP && vid_fps) y += 10;

		DVector2 Scale = GetHUDScale();

		x *= Scale.X;
		y *= Scale.Y;
		boxwidth *= Scale.X;
		boxheight *= Scale.Y;
		x += orgx;
		y += orgy;
	}
	// Now reapply the texture offsets. We will need them
	DrawTexture(twod, tex, x, y, 
		DTA_TopOffsetF, yo,
		DTA_LeftOffsetF, xo,
		DTA_DestWidthF, boxwidth,
		DTA_DestHeightF, boxheight,
		DTA_Color, color,
		DTA_TranslationIndex, translation, // (flags & DI_TRANSLATABLE) ? GetTranslation() : 0,
		DTA_ColorOverlay, (flags & DI_DIM) ? MAKEARGB(170, 0, 0, 0) : 0,
		DTA_Alpha, Alpha,
		DTA_AlphaChannel, !!(flags & DI_ALPHAMAPPED),
		DTA_FillColor, (flags & DI_ALPHAMAPPED) ? 0 : -1,
		DTA_FlipX, !!(flags & DI_MIRROR),
		TAG_DONE);
}


//============================================================================
//
// draw a string
//
//============================================================================

void DBaseStatusBar::DrawString(FFont *font, const FString &cstring, double x, double y, int flags, double Alpha, int translation, int spacing, EMonospacing monospacing, int shadowX, int shadowY, double scaleX, double scaleY)
{
	bool monospaced = monospacing != EMonospacing::Off;
	double dx = 0;

	switch (flags & DI_TEXT_ALIGN)
	{
	default:
		break;
	case DI_TEXT_ALIGN_RIGHT:
		dx = monospaced
			? static_cast<int> ((spacing)*cstring.CharacterCount()) //monospaced, so just multiply the character size
			: static_cast<int> (font->StringWidth(cstring) + (spacing * cstring.CharacterCount()));
		break;
	case DI_TEXT_ALIGN_CENTER:
		dx = monospaced
			? static_cast<int> ((spacing)*cstring.CharacterCount()) / 2 //monospaced, so just multiply the character size
			: static_cast<int> (font->StringWidth(cstring) + (spacing * cstring.CharacterCount())) / 2;
		break;
	}

	// Take text scale into account
	x -= dx * scaleX;

	const uint8_t* str = (const uint8_t*)cstring.GetChars();
	const EColorRange boldTranslation = EColorRange(translation ? translation - 1 : NumTextColors - 1);
	int fontcolor = translation;
	double orgx = 0, orgy = 0;
	DVector2 Scale;

	if (fullscreenOffsets)
	{
		Scale = GetHUDScale();
		shadowX *= (int)Scale.X;
		shadowY *= (int)Scale.Y;

		switch (flags & DI_SCREEN_HMASK)
		{
		default: orgx = 0; break;
		case DI_SCREEN_HCENTER: orgx = screen->GetWidth() / 2; break;
		case DI_SCREEN_RIGHT:   orgx = screen->GetWidth(); break;
		}

		switch (flags & DI_SCREEN_VMASK)
		{
		default: orgy = 0; break;
		case DI_SCREEN_VCENTER: orgy = screen->GetHeight() / 2; break;
		case DI_SCREEN_BOTTOM: orgy = screen->GetHeight(); break;
		}

		// move stuff in the top right corner a bit down if the fps counter is on.
		if ((flags & (DI_SCREEN_HMASK | DI_SCREEN_VMASK)) == DI_SCREEN_RIGHT_TOP && vid_fps) y += 10;
	}
	else
	{
		Scale = { 1.,1. };
	}
	int ch;
	while (ch = GetCharFromString(str), ch != '\0')
	{
		if (ch == ' ')
		{
			x += monospaced ? spacing : font->GetSpaceWidth() + spacing;
			continue;
		}
		else if (ch == TEXTCOLOR_ESCAPE)
		{
			EColorRange newColor = V_ParseFontColor(str, translation, boldTranslation);
			if (newColor != CR_UNDEFINED)
				fontcolor = newColor;
			continue;
		}

		int width;
		FGameTexture* c = font->GetChar(ch, fontcolor, &width);
		if (c == NULL) //missing character.
		{
			continue;
		}

		if (!monospaced) //If we are monospaced lets use the offset
			x += (c->GetDisplayLeftOffset() + 1); //ignore x offsets since we adapt to character size

		double rx, ry, rw, rh;
		rx = x + drawOffset.X;
		ry = y + drawOffset.Y;
		rw = c->GetDisplayWidth();
		rh = c->GetDisplayHeight();

		if (monospacing == EMonospacing::CellCenter)
			rx += (spacing - rw) / 2;
		else if (monospacing == EMonospacing::CellRight)
			rx += (spacing - rw);

		if (!fullscreenOffsets)
		{
			StatusbarToRealCoords(rx, ry, rw, rh);
		}
		else
		{
			rx *= Scale.X;
			ry *= Scale.Y;
			rw *= Scale.X;
			rh *= Scale.Y;

			rx += orgx;
			ry += orgy;
		}

		// Apply text scale
		rw *= scaleX;
		rh *= scaleY;

		// This is not really such a great way to draw shadows because they can overlap with previously drawn characters.
		// This may have to be changed to draw the shadow text up front separately.
		if ((shadowX != 0 || shadowY != 0) && !(flags & DI_NOSHADOW))
		{
#if 0
			// This doesn't work with the limited backend the engine currently uses.
			DrawChar(twod, font, CR_UNTRANSLATED, rx + shadowX, ry + shadowY, ch,
				DTA_DestWidthF, rw,
				DTA_DestHeightF, rh,
				DTA_Alpha, (Alpha * 0.33),
				DTA_FillColor, 0,
				TAG_DONE);
#endif
		}
		DrawChar(twod, font, fontcolor, rx, ry, ch,
			DTA_DestWidthF, rw,
			DTA_DestHeightF, rh,
			DTA_Alpha, Alpha,
			TAG_DONE);

		dx = monospaced 
			? spacing
			: width + spacing - (c->GetDisplayLeftOffset() + 1);

		// Take text scale into account
		x += dx * scaleX;
	}
}

void SBar_DrawString(DBaseStatusBar *self, DHUDFont *font, const FString &string, double x, double y, int flags, int trans, double alpha, int wrapwidth, int linespacing, double scaleX, double scaleY)
{
	//if (font == nullptr) ThrowAbortException(X_READ_NIL, nullptr);
	//if (!screen->HasBegun2D()) ThrowAbortException(X_OTHER, "Attempt to draw to screen outside a draw function");

	// resolve auto-alignment before making any adjustments to the position values.
	if (!(flags & DI_SCREEN_MANUAL_ALIGN))
	{
		if (x < 0) flags |= DI_SCREEN_RIGHT;
		else flags |= DI_SCREEN_LEFT;
		if (y < 0) flags |= DI_SCREEN_BOTTOM;
		else flags |= DI_SCREEN_TOP;
	}

	if (wrapwidth > 0)
	{
		auto brk = V_BreakLines(font->mFont, int(wrapwidth * scaleX), string, true);
		for (auto &line : brk)
		{
			self->DrawString(font->mFont, line.Text, x, y, flags, alpha, trans, font->mSpacing, font->mMonospacing, font->mShadowX, font->mShadowY, scaleX, scaleY);
			y += (font->mFont->GetHeight() + linespacing) * scaleY;
		}
	}
	else
	{
		self->DrawString(font->mFont, string, x, y, flags, alpha, trans, font->mSpacing, font->mMonospacing, font->mShadowX, font->mShadowY, scaleX, scaleY);
	}
}


//============================================================================
//
// draw stuff
//
//============================================================================

void DBaseStatusBar::TransformRect(double &x, double &y, double &w, double &h, int flags)
{
	// resolve auto-alignment before making any adjustments to the position values.
	if (!(flags & DI_SCREEN_MANUAL_ALIGN))
	{
		if (x < 0) flags |= DI_SCREEN_RIGHT;
		else flags |= DI_SCREEN_LEFT;
		if (y < 0) flags |= DI_SCREEN_BOTTOM;
		else flags |= DI_SCREEN_TOP;
	}

	x += drawOffset.X;
	y += drawOffset.Y;

	if (!fullscreenOffsets)
	{
		StatusbarToRealCoords(x, y, w, h);
	}
	else
	{
		double orgx, orgy;

		switch (flags & DI_SCREEN_HMASK)
		{
		default: orgx = 0; break;
		case DI_SCREEN_HCENTER: orgx = screen->GetWidth() / 2; break;
		case DI_SCREEN_RIGHT:   orgx = screen->GetWidth(); break;
		}

		switch (flags & DI_SCREEN_VMASK)
		{
		default: orgy = 0; break;
		case DI_SCREEN_VCENTER: orgy = screen->GetHeight() / 2; break;
		case DI_SCREEN_BOTTOM: orgy = screen->GetHeight(); break;
		}

		// move stuff in the top right corner a bit down if the fps counter is on.
		if ((flags & (DI_SCREEN_HMASK | DI_SCREEN_VMASK)) == DI_SCREEN_RIGHT_TOP && vid_fps) y += 10;

		DVector2 Scale = GetHUDScale();

		x *= Scale.X;
		y *= Scale.Y;
		w *= Scale.X;
		h *= Scale.Y;
		x += orgx;
		y += orgy;
	}
}


static DObject *InitObject(PClass *type, int paramnum, VM_ARGS)
{
	auto obj =  type->CreateNew();
	// Todo: init
	return obj;
}



enum ENumFlags
{
	FNF_WHENNOTZERO = 0x1,
	FNF_FILLZEROS = 0x2,
};

void FormatNumber(int number, int minsize, int maxsize, int flags, const FString &prefix, FString *result)
{
	static int maxvals[] = { 1, 9, 99, 999, 9999, 99999, 999999, 9999999, 99999999, 999999999 };

	if (number == 0 && (flags & FNF_WHENNOTZERO))
	{
		*result = "";
		return;
	}
	if (maxsize > 0 && maxsize < 10)
	{
		number = clamp(number, -maxvals[maxsize - 1], maxvals[maxsize]);
	}
	FString &fmt = *result;
	if (minsize <= 1) fmt.Format("%s%d", prefix.GetChars(), number);
	else if (flags & FNF_FILLZEROS) fmt.Format("%s%0*d", prefix.GetChars(), minsize, number);
	else fmt.Format("%s%*d", prefix.GetChars(), minsize, number);
}

CVAR(Float, hud_statscale, 2, CVAR_ARCHIVE)

void DBaseStatusBar::PrintLevelStats(FLevelStats &stats)
{
	double y;
	double scale = stats.fontscale * hud_statscale;
	if (stats.spacing <= 0) stats.spacing = stats.font->GetHeight() * stats.fontscale;
	double spacing = stats.spacing * hud_statscale;
	if (stats.screenbottomspace < 0)
	{
		double x = 0, w = 0, h = 0;
		y = 200 - RelTop;
		StatusbarToRealCoords(x, y, w, h);
		y -= spacing;
	}
	else
	{
		y = (screen->GetHeight() - stats.screenbottomspace * GetHUDScale().Y) - spacing;
	}

	FString text;
	if (stats.maxsecrets > 0)	// don't bother if there are no secrets.
	{
		text.Format(TEXTCOLOR_ESCAPESTR "%cS: " TEXTCOLOR_ESCAPESTR "%c%d/%d",
			stats.letterColor + 'A', stats.secrets == stats.maxsecrets ? stats.completeColor + 'A' : stats.standardColor + 'A', stats.secrets, stats.maxsecrets);
		DrawText(twod, stats.font, CR_UNTRANSLATED, 2 * hud_statscale, y, text, DTA_ScaleX, scale, DTA_ScaleY, scale, TAG_DONE);
		y -= spacing;
	}

	text = "";
	if (stats.frags > -1) text.Format(TEXTCOLOR_ESCAPESTR "%cF: " TEXTCOLOR_ESCAPESTR "%c%d", stats.letterColor + 'A', stats.standardColor + 'A', stats.frags);
	else if (stats.maxkills == -2) text.Format(TEXTCOLOR_ESCAPESTR "%cK: " TEXTCOLOR_ESCAPESTR "%c%d", stats.letterColor + 'A', stats.standardColor + 'A', stats.kills);
	else if (stats.maxkills != -1) text.Format(TEXTCOLOR_ESCAPESTR "%cK: " TEXTCOLOR_ESCAPESTR "%c%d/%d",
		stats.letterColor + 'A', stats.kills == stats.maxkills ? stats.completeColor + 'A' : stats.standardColor + 'A', stats.kills, stats.maxkills);

	if (text.IsNotEmpty())
	{
		DrawText(twod, stats.font, CR_UNTRANSLATED, 2 * hud_statscale, y, text, DTA_ScaleX, scale, DTA_ScaleY, scale, TAG_DONE);
		y -= spacing;
	}

	text.Format(TEXTCOLOR_ESCAPESTR "%cT: " TEXTCOLOR_ESCAPESTR "%c%d:%02d", stats.letterColor+'A', stats.standardColor + 'A', stats.time / 60000, (stats.time % 60000) / 1000);
	DrawText(twod, stats.font, CR_UNTRANSLATED, 2 * hud_statscale, y, text, DTA_ScaleX, scale, DTA_ScaleY, scale, TAG_DONE);
}