//-------------------------------------------------------------------------
/*
Copyright (C) 2016 EDuke32 developers and contributors
Copyright (C) 2019 Christoph Oelckers

This is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
//-------------------------------------------------------------------------

#include "ns.h"	// Must come before everything else!

#include "cheats.h"
#include "compat.h"
#include "demo.h"
#include "duke3d.h"

#include "menus.h"
#include "osdcmds.h"
#include "savegame.h"
#include "game.h"
#include "superfasthash.h"
#include "gamecvars.h"
#include "gamecontrol.h"
#include "c_bind.h"
#include "menu/menu.h"
#include "gstrings.h"
#include "version.h"
#include "namesdyn.h"
#include "../../glbackend/glbackend.h"


BEGIN_DUKE_NS

#define MENU_MARGIN_REGULAR 40
#define MENU_MARGIN_WIDE    32
#define MENU_MARGIN_CENTER  160
#define MENU_HEIGHT_CENTER  100


enum MenuTextFlags_t
{
	MT_Selected = 1 << 0,
	MT_Disabled = 1 << 1,
	MT_XCenter = 1 << 2,
	MT_XRight = 1 << 3,
	MT_YCenter = 1 << 4,
	MT_Literal = 1 << 5,
	MT_RightSide = 1 << 6,
};


// common font types
// tilenums are set after namesdyn runs.
// These are also modifiable by scripts.
//                                      emptychar x,y       between x,y         zoom                cursorLeft          cursorCenter        cursorScale          textflags
//                                      tilenum             shade_deselected    shade_disabled      pal                 pal_selected        pal_deselected       pal_disabled
MenuFont_t MF_Redfont =               { { 5<<16, 15<<16 },  { 0, 0 },           65536,              20<<16,             110<<16,            65536, 65536, 65536, TEXT_BIGALPHANUM | TEXT_UPPERCASE,
                                        -1,                 10,                 0,                  0,                  0,                  0,                   1,
                                        0,                  0,                  1 };
MenuFont_t MF_Bluefont =              { { 5<<16, 7<<16 },   { 0, 0 },           65536,              10<<16,             110<<16,            32768, 65536, 65536, 0,
                                        -1,                 10,                 0,                  0,                  10,                 10,                  16,
                                        0,                  0,                  16 };
MenuFont_t MF_Minifont =              { { 4<<16, 5<<16 },   { 1<<16, 1<<16 },   65536,              10<<16,             110<<16,            32768, 65536, 65536, 0,
                                        -1,                 10,                 0,                  0,                  2,                  2,                   0,
                                        0,                  0,                  16 };


/*
This function prepares data after ART and CON have been processed.
It also initializes some data in loops rather than statically at compile time.
*/

void Menu_Init(void)
{

	// prepare menu fonts
	// check if tilenum is -1 in case it was set in EVENT_SETDEFAULTS
	if ((unsigned)MF_Redfont.tilenum >= MAXTILES) MF_Redfont.tilenum = TILE_BIGALPHANUM;
	if ((unsigned)MF_Bluefont.tilenum >= MAXTILES) MF_Bluefont.tilenum = TILE_STARTALPHANUM;
	if ((unsigned)MF_Minifont.tilenum >= MAXTILES) MF_Minifont.tilenum = TILE_MINIFONT;
	MF_Redfont.emptychar.y = tilesiz[MF_Redfont.tilenum].y << 16;
	MF_Bluefont.emptychar.y = tilesiz[MF_Bluefont.tilenum].y << 16;
	MF_Minifont.emptychar.y = tilesiz[MF_Minifont.tilenum].y << 16;
	if (!minitext_lowercase)
		MF_Minifont.textflags |= TEXT_UPPERCASE;


	
    if (RR)
    {
        MF_Redfont.zoom = 32768;
        MF_Redfont.emptychar.x <<= 1;
        MF_Redfont.cursorScale = 13107;
        MF_Redfont.cursorScale2 = 6553;
        //MF_Redfont.emptychar.y <<= 1;
        MF_Bluefont.zoom = 32768;
        MF_Bluefont.emptychar.x <<= 1;
        MF_Bluefont.cursorScale = 6553;
        MF_Bluefont.cursorScale2 = 6553;
        //MF_Bluefont.emptychar.y <<= 1;
        MF_Minifont.zoom = 32768;
        MF_Minifont.emptychar.x <<= 1;
        MF_Minifont.cursorScale = 6553;
        MF_Minifont.cursorScale2 = 6553;
        //MF_Minifont.emptychar.y <<= 1;
    }

}


static void Menu_DrawBackground(const DVector2 &origin)
{
	rotatesprite_fs(int(origin.X * 65536) + (MENU_MARGIN_CENTER << 16), int(origin.Y * 65536) + (100 << 16), 65536L, 0, TILE_MENUSCREEN, 16, 0, 10 + 64);
}

static void Menu_DrawTopBar(const DVector2 &origin)
{
    rotatesprite_fs(int(origin.X*65536) + (MENU_MARGIN_CENTER<<16), int(origin.Y*65536) + (19<<16), MF_Redfont.cursorScale3, 0,TILE_MENUBAR,16,0,10);
}

static void Menu_DrawTopBarCaption(const char* caption, const DVector2& origin)
{
	static char t[64];
	size_t const srclen = strlen(caption);
	size_t const dstlen = min(srclen, ARRAY_SIZE(t) - 1);
	memcpy(t, caption, dstlen);
	t[dstlen] = '\0';
	char* p = &t[dstlen - 1];
	if (*p == ':')
		*p = '\0';
	captionmenutext(int(origin.X * 65536) + (MENU_MARGIN_CENTER << 16), int(origin.Y * 65536) + (24 << 16) + (15 << 15), t);
}

static void Menu_GetFmt(const MenuFont_t* font, uint8_t const status, int32_t* s)
{
	if (status & MT_Selected)
		*s = sintable[((int32_t)totalclock << 5) & 2047] >> 12;
	else
		*s = font->shade_deselected;
	// sum shade values
	if (status & MT_Disabled)
		*s += font->shade_disabled;
}

static vec2_t Menu_Text(int32_t x, int32_t y, const MenuFont_t* font, const char* t, uint8_t status, int32_t ydim_upper, int32_t ydim_lower)
{
	int32_t s, p, ybetween = font->between.y;
	int32_t f = font->textflags;
	if (RR) f |= TEXT_RRMENUTEXTHACK;
	if (status & MT_XCenter)
		f |= TEXT_XCENTER;
	if (status & MT_XRight)
		f |= TEXT_XRIGHT;
	if (status & MT_YCenter)
	{
		f |= TEXT_YCENTER | TEXT_YOFFSETZERO;
		ybetween = font->emptychar.y; // <^ the battle against 'Q'
	}
	if (status & MT_Literal)
		f |= TEXT_LITERALESCAPE;

	int32_t z = font->zoom;

	if (status & MT_Disabled)
		p = (status & MT_RightSide) ? font->pal_disabled_right : font->pal_disabled;
	else if (status & MT_Selected)
		p = (status & MT_RightSide) ? font->pal_selected_right : font->pal_selected;
	else
		p = (status & MT_RightSide) ? font->pal_deselected_right : font->pal_deselected;

	Menu_GetFmt(font, status, &s);

	return G_ScreenText(font->tilenum, x, y, z, 0, 0, t, s, p, 2 | 8 | 16 | ROTATESPRITE_FULL16, 0, font->emptychar.x, font->emptychar.y, font->between.x, ybetween, f, 0, ydim_upper, xdim - 1, ydim_lower);
}

static int32_t Menu_CursorShade(void)
{
	return 4 - (sintable[((int32_t)totalclock << 4) & 2047] >> 11);
}

static void Menu_DrawCursorCommon(int32_t x, int32_t y, int32_t z, int32_t picnum, int32_t ydim_upper = 0, int32_t ydim_lower = ydim - 1)
{
	rotatesprite_(x, y, z, 0, picnum, Menu_CursorShade(), 0, 2 | 8, 0, 0, 0, ydim_upper, xdim - 1, ydim_lower);
}

static void Menu_DrawCursorLeft(int32_t x, int32_t y, int32_t z)
{
	const int frames = RR ? 16 : 7;
	Menu_DrawCursorCommon(x, y, z, TILE_SPINNINGNUKEICON+(((int32_t) totalclock>>3)%frames));
}

static void Menu_DrawCursorRight(int32_t x, int32_t y, int32_t z)
{
	const int frames = RR ? 16 : 7;
    Menu_DrawCursorCommon(x, y, z, TILE_SPINNINGNUKEICON+frames-1-((frames-1+((int32_t) totalclock>>3))%frames));
}

static int Menu_GetFontHeight(int fontnum)
{
	auto& font = fontnum == NIT_BigFont ? MF_Redfont : fontnum == NIT_SmallFont ? MF_Bluefont : MF_Minifont;
	return font.get_yline();
}

int dword_A99A0, dword_A99A4, dword_A99A8, dword_A99AC;
short word_A99B0, word_A99B2;
int dword_A99B4, dword_A99B8, dword_A99BC, dword_A99C0, dword_A99C4, dword_A99C8;

void Menu_DHLeaonardHeadReset(void)
{
	dword_A99A0 = 0;
	dword_A99A4 = 0;
	dword_A99A8 = 0;
	dword_A99AC = 0;
	word_A99B2 = 0;
	dword_A99B4 = 0;
	word_A99B0 = 0;
}

void Menu_DHLeaonardHeadDisplay(vec2_t pos)
{
	if (sub_51B68() && !dword_A99C0)
	{
		dword_A99C0 = (int)totalclock;
	}
	if (dword_A99C0 && (int)totalclock - dword_A99C0 > 40)
	{
		dword_A99C0 = 0;
		dword_A99C4 = 1;
	}
	switch (dword_A99A0)
	{
	case 0:
		if ((int)totalclock - dword_A99B8 >= 240 && dword_A99C4 && (rrdh_random() & 63) < 32)
		{
			dword_A99A0 = 1;
			dword_A99A4 = 160 - ((rrdh_random() & 255) - 128);
			word_A99B0 = ((rrdh_random() & 127) + 1984) & 2047;
			dword_A99AC = (rrdh_random() & 4095) - 4090;
			word_A99B2 = TILE_SPINNINGNUKEICON + (rrdh_random() & 15);
		}
		break;
	case 1:
		if (dword_A99A8 < 54)
		{
			if ((int)totalclock - dword_A99B4 > 2)
			{
				dword_A99B4 = (int)totalclock;
				dword_A99A8 += 2;
			}
		}
		else
		{
			dword_A99A0 = 2;
			dword_A99BC = (int)totalclock;
		}
		pos.x += dword_A99A4 << 16;
		pos.y += (240 - dword_A99A8) << 16;
		rotatesprite(pos.x, pos.y, 32768 - dword_A99AC, word_A99B0, word_A99B2, 0, 0, 10, 0, 0, xdim - 1, ydim - 1);
		break;
	case 2:
		if (dword_A99C4 == 1)
		{
			if ((rrdh_random() & 63) > 32)
				word_A99B2--;
			else
				word_A99B2++;
		}
		else
		{
			if ((rrdh_random() & 127) == 48)
			{
				if ((int)totalclock - dword_A99BC > 240)
					dword_A99A0 = 3;
			}
		}
		if (word_A99B2 < TILE_SPINNINGNUKEICON)
			word_A99B2 = TILE_SPINNINGNUKEICON + 15;
		if (word_A99B2 > TILE_SPINNINGNUKEICON + 15)
			word_A99B2 = TILE_SPINNINGNUKEICON;
		pos.x += dword_A99A4 << 16;
		pos.y += (240 - dword_A99A8) << 16;
		rotatesprite(pos.x, pos.y, 32768 - dword_A99AC, word_A99B0, word_A99B2, 0, 0, 10, 0, 0, xdim - 1, ydim - 1);
		if ((int)totalclock - dword_A99BC > 960)
			dword_A99A0 = 3;
		break;
	case 3:
		if (dword_A99A8 > 0)
		{
			if ((int)totalclock - dword_A99B4 > 2)
			{
				dword_A99B4 = (int)totalclock;
				dword_A99A8 -= 2;
			}
			pos.x += dword_A99A4 << 16;
			pos.y += (240 - dword_A99A8) << 16;
			rotatesprite(pos.x, pos.y, 32768 - dword_A99AC, word_A99B0, word_A99B2, 0, 0, 10, 0, 0, xdim - 1, ydim - 1);
		}
		else
		{
			dword_A99B8 = (int)totalclock;
			dword_A99A0 = 0;
		}
		break;
	}
	dword_A99C4 = 0;
}


//----------------------------------------------------------------------------
//
// Implements the native looking menu used for the main menu
// and the episode/skill selection screens, i.e. the parts
// that need to look authentic
//
//----------------------------------------------------------------------------

class DukeListMenu : public DListMenu
{
	using Super = DListMenu;
protected:

	void Ticker() override
	{
		// Lay out the menu.
		int32_t y_upper = mDesc->mYpos;
		int32_t y_lower = y_upper + mDesc->mYbotton;
		int32_t y = 0;
		int32_t calculatedentryspacing = 0;
		int32_t const height = Menu_GetFontHeight(mDesc->mNativeFontNum) >> 16;

		int32_t totalheight = 0, numvalidentries = mDesc->mItems.Size();

		for (unsigned e = 0; e < mDesc->mItems.Size(); ++e)
		{
			auto entry = mDesc->mItems[e];
			entry->mHidden = false;
			entry->SetHeight(height);
			totalheight += height;
		}
		if (mDesc->mSpacing <= 0) calculatedentryspacing = std::max(0, (y_lower - y_upper - totalheight) / (numvalidentries > 1 ? numvalidentries - 1 : 1));
		if (calculatedentryspacing <= 0) calculatedentryspacing = mDesc->mSpacing;


		// totalHeight calculating pass
		int totalHeight;
		for (unsigned e = 0; e < mDesc->mItems.Size(); ++e)
		{
			auto entry = mDesc->mItems[e];
			if (!entry->mHidden)
			{
				entry->SetY(y_upper + y);
				y += height;
				totalHeight = y;
				y += calculatedentryspacing;
			}
		}
	}
};

class DukeMainMenu : public DukeListMenu
{
	virtual void Init(DMenu* parent = NULL, FListMenuDescriptor* desc = NULL) override
	{
		DukeListMenu::Init(parent, desc);
		Menu_DHLeaonardHeadReset();
	}

	void PreDraw() override
	{
		DukeListMenu::PreDraw();
		if (DEER)
		{
			vec2_t forigin = { int(origin.X * 65536), int(origin.Y * 65536) };
			Menu_DHLeaonardHeadDisplay(forigin);
			rotatesprite_fs(forigin.x + (MENU_MARGIN_CENTER << 16), forigin.y + ((32) << 16), 20480L, 0, TILE_DUKENUKEM, 0, 0, 10);
		}
		else if (RRRA)
		{
			rotatesprite_fs(int(origin.X * 65536) + ((MENU_MARGIN_CENTER - 5) << 16), int(origin.Y * 65536) + ((57) << 16), 16592L, 0, TILE_THREEDEE, 0, 0, 10);
		}
		else if (RR)
		{
			rotatesprite_fs(int(origin.X * 65536) + ((MENU_MARGIN_CENTER + 5) << 16), int(origin.Y * 65536) + ((24) << 16), 23592L, 0, TILE_INGAMEDUKETHREEDEE, 0, 0, 10);
		}
		else
        {
            rotatesprite_fs(int(origin.X * 65536) + (MENU_MARGIN_CENTER<<16), int(origin.Y * 65536) + ((28)<<16), 65536L,0,TILE_INGAMEDUKETHREEDEE,0,0,10);
            if (PLUTOPAK)   // JBF 20030804
                rotatesprite_fs(int(origin.X * 65536) + ((MENU_MARGIN_CENTER+100)<<16), int(origin.Y * 65536) + (36<<16), 65536L,0,TILE_PLUTOPAKSPRITE+2,(sintable[((int32_t) totalclock<<4)&2047]>>11),0,2+8);
        }
		
	}
};


class DukeHuntMenu : public DukeListMenu
{
	void PreDraw() override
	{
		DukeListMenu::PreDraw();
		vec2_t forigin = { int(origin.X * 65536), int(origin.Y * 65536) };
		int t1, t2;
		short ang;
		switch (mDesc->mSelectedItem)
		{
		case 0:
		default:
			t1 = 7098;
			t2 = 7041;
			ang = 16;
			break;
		case 1:
			t1 = 7099;
			t2 = 7042;
			ang = 2032;
			break;
		case 2:
			t1 = 7100;
			t2 = 7043;
			ang = 16;
			break;
		case 3:
			t1 = 7101;
			t2 = 7044;
			ang = 2032;
			break;
		}
		rotatesprite_fs(forigin.x + (240 << 16), forigin.y + (56 << 16), 24576L, ang, t1, 2, 0, 64 + 10);
		rotatesprite_fs(forigin.x + (240 << 16), forigin.y + (42 << 16), 24576L, ang, 7104, 2, 0, 10);
		rotatesprite_fs(forigin.x + (20 << 16), forigin.y + (10 << 16), 32768L, 0, t2, -64, 0, 128 + 16 + 10);
	}
};

class DukeTargetMenu : public DukeListMenu
{
	void PreDraw() override
	{
		DukeListMenu::PreDraw();
		vec2_t forigin = { int(origin.X * 65536), int(origin.Y * 65536) };
		int t1, t2;
		short ang;
		switch (mDesc->mSelectedItem)
		{
		case 0:
		default:
			t1 = 7102;
			t2 = 7045;
			ang = 16;
			break;
		case 1:
			t1 = 7103;
			t2 = 7046;
			ang = 2032;
			break;
			break;
		}
		rotatesprite_fs(forigin.x + (240 << 16), forigin.y + (56 << 16), 24576L, ang, t1, 2, 0, 64 + 10);
		rotatesprite_fs(forigin.x + (240 << 16), forigin.y + (42 << 16), 24576L, ang, 7104, 2, 0, 10);
		rotatesprite_fs(forigin.x + (20 << 16), forigin.y + (10 << 16), 32768L, 0, t2, -64, 0, 128 + 16 + 10);
	}
};

class DukeWeaponMenu : public DukeListMenu
{
	void PreDraw() override
	{
		DukeListMenu::PreDraw();
		vec2_t forigin = { int(origin.X * 65536), int(origin.Y * 65536) };
		int t1, t2;
		switch (mDesc->mSelectedItem)
		{
		case 0:
		default:
			t1 = 7124;
			t2 = 7066;
			break;
		case 1:
			t1 = 7125;
			t2 = 7067;
			break;
		case 2:
			t1 = 7126;
			t2 = 7068;
			break;
		case 3:
			t1 = 7127;
			t2 = 7069;
			break;
		case 4:
			t1 = 7128;
			t2 = 7070;
			break;
			}
			rotatesprite_fs(forigin.x + (240 << 16), forigin.y + (56 << 16), 32768L, 0, t1, 2, 0, 64 + 10);
			rotatesprite_fs(forigin.x + (8 << 16), forigin.y + (4 << 16), 32768L, 0, t2, -64, 0, 128 + 16 + 10);
		}
};

class DukeTrophiesMenu : public DukeListMenu
{
	void PreDraw() override
	{
		DukeListMenu::PreDraw();
		vec2_t forigin = { int(origin.X * 65536), int(origin.Y * 65536) };
		if (g_player[myconnectindex].ps->gm & MODE_GAME)
		{
			if (ud.level_number < 4)
			{
				rotatesprite_fs(forigin.x + (160 << 16), forigin.y + (100 << 16), 65536, 0, 1730, 0, 0, 10);
				sub_5469C(forigin, 0);
			}
			else
				sub_5469C(forigin, 2);
		}
		else
		{
			rotatesprite_fs(forigin.x + (160 << 16), forigin.y + (100 << 16), 65536, 0, 1730, 0, 0, 10);
			sub_5469C(forigin, 1);
		}
	}
};


//----------------------------------------------------------------------------
//
// Menu related game interface functions
//
//----------------------------------------------------------------------------

void GameInterface::DrawNativeMenuText(int fontnum, int state, double xpos, double ypos, float fontscale, const char* text, int flags)
{
	int ydim_upper = 0;
	int ydim_lower = ydim - 1;
	//int32_t const indent = 0;	// not set for any relevant menu
	int x = int(xpos * 65536);

	uint8_t status = 0;
	if (state == NIT_SelectedState)
		status |= MT_Selected;
	if (state == NIT_InactiveState)
		status |= MT_Disabled;
	if (flags & LMF_Centered)
		status |= MT_XCenter;

	bool const dodraw = true;
	MenuFont_t& font = fontnum == NIT_BigFont ? MF_Redfont : fontnum == NIT_SmallFont ? MF_Bluefont : MF_Minifont;

	int32_t const height = font.get_yline();
	status |= MT_YCenter;
	int32_t const y_internal = int(ypos * 65536) + ((height >> 17) << 16);// -menu->scrollPos;

	vec2_t textsize;
	if (dodraw)
		textsize = Menu_Text(x, y_internal, &font, text, status, ydim_upper, ydim_lower);

	if (dodraw && (status & MT_Selected) && state != 1)
	{
		if (status & MT_XCenter)
		{
			Menu_DrawCursorLeft(x + font.cursorCenterPosition, y_internal, font.cursorScale);
			Menu_DrawCursorRight(x - font.cursorCenterPosition, y_internal, font.cursorScale);
		}
		else
			Menu_DrawCursorLeft(x /*+ indent*/ - font.cursorLeftPosition, y_internal, font.cursorScale);
	}

}

void GameInterface::MenuOpened()
{
	S_PauseSounds(true);
	if ((!g_netServer && ud.multimode < 2))
	{
		ready2send = 0;
		totalclock = ototalclock;
		screenpeek = myconnectindex;
	}

	auto& gm = g_player[myconnectindex].ps->gm;
	if (gm & MODE_GAME)
	{
		gm |= MODE_MENU;
	}
}

void GameInterface::MenuSound(EMenuSounds snd)
{
	switch (snd)
	{
	case ActivateSound:
		S_MenuSound();
		break;

	case CursorSound:
		S_PlaySound(RR ? 335 : KICK_HIT, CHAN_AUTO, CHANF_UI);
		break;

	case AdvanceSound:
		S_PlaySound(RR ? 341 : PISTOL_BODYHIT, CHAN_AUTO, CHANF_UI);
		break;

	case CloseSound:
		S_PlaySound(EXITMENUSOUND, CHAN_AUTO, CHANF_UI);
		break;

	default:
		return;
	}
}

void GameInterface::MenuClosed()
{

	auto& gm = g_player[myconnectindex].ps->gm;
	if (gm & MODE_GAME)
	{
		if (gm & MODE_MENU)
			inputState.ClearAllInput();

		// The following lines are here so that you cannot close the menu when no game is running.
		gm &= ~MODE_MENU;

		if ((!g_netServer && ud.multimode < 2) && ud.recstat != 2)
		{
			ready2send = 1;
			totalclock = ototalclock;
			CAMERACLOCK = (int32_t)totalclock;
			CAMERADIST = 65536;

			// Reset next-viewscreen-redraw counter.
			// XXX: are there any other cases like that in need of handling?
			if (g_curViewscreen >= 0)
				actor[g_curViewscreen].t_data[0] = (int32_t)totalclock;
		}

		G_UpdateScreenArea();
		S_PauseSounds(false);
	}
}

bool GameInterface::CanSave()
{
	if (ud.recstat == 2 || DEER) return false;
	auto &myplayer = *g_player[myconnectindex].ps;
	if (sprite[myplayer.i].extra <= 0)
	{
		//P_DoQuote(QUOTE_SAVE_DEAD, &myplayer); // handled by the menu.
		return false;
	}
	return true;
}

void GameInterface::StartGame(FNewGameStartup& gs)
{
	int32_t skillsound = PISTOL_BODYHIT;

	soundEngine->StopAllChannels();

	if (!DEER)
	{

		switch (gs.Skill)
		{
		case 0:
			skillsound = RR ? 427 : JIBBED_ACTOR6;
			break;
		case 1:
			skillsound = RR ? 428 : BONUS_SPEECH1;
			break;
		case 2:
			skillsound = RR ? 196 : DUKE_GETWEAPON2;
			break;
		case 3:
			skillsound = RR ? 195 : JIBBED_ACTOR5;
			break;
		case 4:
			skillsound = RR ? 197 : JIBBED_ACTOR5; // Does not exist in DN3D.
			break;
		}
		ud.m_player_skill = gs.Skill + 1;
		if (menu_sounds && skillsound >= 0 && SoundEnabled())
		{
			S_PlaySound(skillsound, CHAN_AUTO, CHANF_UI);

			while (S_CheckSoundPlaying(skillsound))
			{
				S_Update();
				G_HandleAsync();
			}
		}
		ud.m_respawn_monsters = (gs.Skill == 3);
		ud.m_volume_number = gs.Episode;
		m_level_number = gs.Level;
	}
	else
	{
		ud.m_player_skill = 1;
		ud.m_respawn_monsters = 0;
		ud.m_volume_number = 0;
		m_level_number = gs.Episode; 
		g_player[myconnectindex].ps->dhat61f = gs.Skill;
	}

	ud.m_monsters_off = ud.monsters_off = 0;
	ud.m_respawn_items = 0;
	ud.m_respawn_inventory = 0;
	ud.multimode = 1;
	G_NewGame_EnterLevel();

}

FSavegameInfo GameInterface::GetSaveSig()
{
	return { SAVESIG_RR, MINSAVEVER_RR, SAVEVER_RR };
}

void GameInterface::DrawMenuCaption(const DVector2& origin, const char* text)
{
	Menu_DrawTopBar(origin);
	Menu_DrawTopBarCaption(text, origin);
}

void GameInterface::DrawCenteredTextScreen(const DVector2 &origin, const char *text, int position, bool bg)
{
	if (bg) Menu_DrawBackground(origin);
	else
	{
		// Only used for the confirmation screen.
		int lines = 1;
		for (int i = 0; text[i]; i++) if (text[i] == '\n') lines++;
		int height = lines * Menu_GetFontHeight(NIT_SmallFont);
		position -= height >> 17;
		if (!RR) Menu_DrawCursorLeft(160 << 16, 130 << 16, 65536);
	}
	G_ScreenText(MF_Bluefont.tilenum, int((origin.X + 160) * 65536), int((origin.Y + position) * 65536), MF_Bluefont.zoom, 0, 0, text, 0, MF_Bluefont.pal,
		2 | 8 | 16 | ROTATESPRITE_FULL16, 0, MF_Bluefont.emptychar.x, MF_Bluefont.emptychar.y, MF_Bluefont.between.x, MF_Bluefont.between.y,
		MF_Bluefont.textflags | TEXT_XCENTER, 0, 0, xdim - 1, ydim - 1);
}


void GameInterface::DrawPlayerSprite(const DVector2& origin, bool onteam)
{
	if (RR)
		rotatesprite_fs(int(origin.X * 65536) + (260<<16), int(origin.Y * 65536) + ((24+(tilesiz[TILE_APLAYER].y>>2))<<16), 24576L,0,3845+36-((((8-((int32_t) totalclock>>4)))&7)*5),0,onteam ? G_GetTeamPalette(playerteam) : G_CheckPlayerColor(playercolor),10);
	else
		rotatesprite_fs(int(origin.X * 65536) + (260<<16), int(origin.Y * 65536) + ((24+(tilesiz[TILE_APLAYER].y>>1))<<16), 49152L,0,1441-((((4-((int32_t) totalclock>>4)))&3)*5),0,onteam ? G_GetTeamPalette(playerteam) : G_CheckPlayerColor(playercolor),10);
}

void GameInterface::QuitToTitle()
{
	g_player[myconnectindex].ps->gm = MODE_DEMO;
	if (ud.recstat == 1)
		G_CloseDemoWrite();
	artClearMapArt();
}

END_DUKE_NS

//----------------------------------------------------------------------------
//
// Class registration
//
//----------------------------------------------------------------------------


static TMenuClassDescriptor<Duke3d::DukeMainMenu> _mm("Duke.MainMenu");
static TMenuClassDescriptor<Duke3d::DukeListMenu> _lm("Duke.ListMenu");
static TMenuClassDescriptor<Duke3d::DukeHuntMenu> _dhm("Duke.HuntMenu");
static TMenuClassDescriptor<Duke3d::DukeTargetMenu> _dtm("Duke.TargetMenu");
static TMenuClassDescriptor<Duke3d::DukeWeaponMenu> _dwm("Duke.WeaponMenu");
static TMenuClassDescriptor<Duke3d::DukeTrophiesMenu> _dttm("Duke.TrophiesMenu");
static TMenuClassDescriptor<DImageScrollerMenu> _ism("Duke.ImageScrollerMenu"); // does not implement a new class, we only need the descriptor.

void RegisterDuke3dMenus()
{
	menuClasses.Push(&_mm);
	menuClasses.Push(&_lm);
	menuClasses.Push(&_ism);
	menuClasses.Push(&_dhm);
	menuClasses.Push(&_dtm);
	menuClasses.Push(&_dwm);
	menuClasses.Push(&_dttm);
}
