//-------------------------------------------------------------------------
/*
Copyright (C) 1996, 2003 - 3D Realms Entertainment
Copyright (C) 2020 - Christoph Oelckers 

This file is part of Enhanced Duke Nukem 3D version 1.5 - Atomic Edition

Duke Nukem 3D is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

Original Source: 1996 - Todd Replogle
Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms

*/
//-------------------------------------------------------------------------

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

#include "duke3d.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 "names.h"
#include "mapinfo.h"
#include "gamestate.h"
#include "../../glbackend/glbackend.h"


BEGIN_DUKE_NS

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

static void Menu_DrawBackground(const DVector2 &origin)
{
	DrawTexture(twod, tileGetTexture(TILE_MENUSCREEN), origin.X + 160, origin.Y + 100, DTA_FullscreenScale, 3, DTA_VirtualWidth, 320, DTA_VirtualHeight, 200, DTA_Color, 0xff808080, DTA_CenterOffset, true, TAG_DONE);
}

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

static void Menu_DrawCursor(double x, double y, double scale, bool right)
{
	const int frames = isRR() ? 16 : 7;
	int picnum;
	if (!right) picnum = TILE_SPINNINGNUKEICON + (((int)totalclock >> 3) % frames);
	else picnum = TILE_SPINNINGNUKEICON + frames - 1 - ((frames - 1 + ((int)totalclock >> 3)) % frames);
	int light = int(224 + 31 * sin((int)totalclock / 20.));
	PalEntry pe(255, light, light, light);
	DrawTexture(twod, tileGetTexture(picnum), x, y, DTA_FullscreenScale, 3, DTA_VirtualWidth, 320, DTA_VirtualHeight, 200, DTA_ScaleX, scale, DTA_ScaleY, scale, DTA_Color, pe, DTA_CenterOffsetRel, true, TAG_DONE);
}

//----------------------------------------------------------------------------
//
// 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.
		int y_upper = mDesc->mYpos;
		int y_lower = y_upper + mDesc->mYbotton;
		int y = 0;
		int spacing = 0;
		const int height = 15; // cannot take value from the font because it would be inconsistent

		int 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) spacing = std::max(0, (y_lower - y_upper - totalheight) / (numvalidentries > 1 ? numvalidentries - 1 : 1));
		if (spacing <= 0) spacing = mDesc->mSpacing;

		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 += spacing;
			}
		}
	}
};

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

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

	void PreDraw() override
	{
		DukeListMenu::PreDraw();
		double x = origin.X + 160;
		if (isRRRA())
		{
			DrawTexture(twod, tileGetTexture(TILE_THREEDEE), x-5, origin.Y+57, DTA_FullscreenScale, 3, DTA_VirtualWidth, 320, DTA_VirtualHeight, 200, DTA_ScaleX, 0.253, DTA_ScaleY, 0.253, DTA_CenterOffsetRel, true, TAG_DONE);
		}
		else if (isRR())
		{
			DrawTexture(twod, tileGetTexture(TILE_INGAMEDUKETHREEDEE), x+5, origin.Y + 24, DTA_FullscreenScale, 3, DTA_VirtualWidth, 320, DTA_VirtualHeight, 200, DTA_ScaleX, 0.36, DTA_ScaleY, 0.36, DTA_CenterOffsetRel, true, TAG_DONE);
		}
		else
		{
			DrawTexture(twod, tileGetTexture(TILE_INGAMEDUKETHREEDEE), x, origin.Y + 29, DTA_FullscreenScale, 3, DTA_VirtualWidth, 320, DTA_VirtualHeight, 200, DTA_CenterOffsetRel, true, TAG_DONE);
			if (PLUTOPAK)
			{
				int light = 224 + 31 * sin(int(totalclock) / 40.);
				PalEntry pe(255, light, light, light);
				DrawTexture(twod, tileGetTexture(TILE_PLUTOPAKSPRITE + 2), x + 100, origin.Y + 36, DTA_FullscreenScale, 3, DTA_VirtualWidth, 320, DTA_VirtualHeight, 200, DTA_Color, pe, DTA_CenterOffsetRel, true, TAG_DONE);
			}
		}
		
	}
};


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

void GameInterface::DrawNativeMenuText(int fontnum, int state, double oxpos, double ypos, float fontscale, const char* text, int flags)
{
	double xpos = oxpos;
	int trans;
	PalEntry pe;

	double scale = isRR() ? 0.4 : 1.;
	if (flags & LMF_Centered) xpos -= BigFont->StringWidth(text) * scale * 0.5;

	if (state == NIT_InactiveState)
	{
		trans = TRANSLATION(Translation_Remap, 1);
		pe = 0xffffffff;
	}
	else if (state == NIT_SelectedState)
	{
		trans = 0;
		int light = 224 + 31 * sin(int(totalclock) / 20.);
		pe = PalEntry(255, light, light, light);
	}
	else
	{
		trans = 0;
		pe = 0xffa0a0a0;
	}

	DrawText(twod, BigFont, CR_UNDEFINED, xpos, ypos, text, DTA_FullscreenScale, 3, DTA_VirtualWidth, 320, DTA_VirtualHeight, 200, DTA_ScaleX, scale, DTA_ScaleY, scale, DTA_Color, pe,
		DTA_TranslationIndex, trans, TAG_DONE);

	if (state == NIT_SelectedState)
	{
		const int cursorOffset = 110;
		const double cursorScale = isRR() ? 0.2 : 1.0;
		const double ymid = ypos + 7;	// half height must be hardcoded or layouts will break.
		if (flags & LMF_Centered)
		{
			Menu_DrawCursor(oxpos + cursorOffset, ymid, cursorScale, false);
			Menu_DrawCursor(oxpos - cursorOffset, ymid, cursorScale, true);
		}
		else
			Menu_DrawCursor(oxpos - cursorOffset, ymid, cursorScale, false);
	}

}

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

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

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

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

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

	default:
		return;
	}
}

void GameInterface::MenuClosed()
{
	auto& gm = ps[myconnectindex].gm;
	if (gm & MODE_GAME)
	{
		// The following lines are here so that you cannot close the menu when no game is running.

		if (ud.multimode < 2 && ud.recstat != 2)
		{
			ready2send = 1;
			totalclock = ototalclock;
			cameraclock = (int32_t)totalclock;
			cameradist = 65536;
		}
	}
}

bool GameInterface::CanSave()
{
	if (ud.recstat == 2) return false;
	auto &myplayer = ps[myconnectindex];
	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();
	
	static const short sounds_d[] = { JIBBED_ACTOR6, BONUS_SPEECH1, DUKE_GETWEAPON2, JIBBED_ACTOR5, JIBBED_ACTOR5 };
	static const short sounds_r[] = { 427, 428, 196, 195, 197 };
	if (gs.Skill >=0 && gs.Skill <= 5) skillsound = isRR()? sounds_r[gs.Skill] : sounds_d[gs.Skill];

	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();
			handleevents();
		}
	}
	ud.m_respawn_monsters = (gs.Skill == 3);

	ud.m_monsters_off = ud.monsters_off = 0;
	ud.m_respawn_items = 0;
	ud.m_respawn_inventory = 0;
	ud.multimode = 1;
	auto map = FindMapByLevelNum(levelnum(gs.Episode, gs.Level));
	if (map)
	{
		startnewgame(map, ud.m_player_skill);
	}

}

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

void GameInterface::DrawMenuCaption(const DVector2& origin, const char* text)
{
	DrawTexture(twod, tileGetTexture(TILE_MENUBAR), origin.X + 160, origin.Y + 19, DTA_FullscreenScale, 3, DTA_VirtualWidth, 320, DTA_VirtualHeight, 200, DTA_Color, 0xff808080, DTA_CenterOffsetRel, 1, TAG_DONE);

	FString t = text;
	size_t newlen = t.Len();
	if (t[t.Len() - 1] == ':') newlen--;
	if (newlen > 63) newlen = 63;
	t.Truncate(newlen);
	double scale = isRR() ? 0.4 : 1.0;
	double x = 160 + origin.X - BigFont->StringWidth(t) * scale * 0.5;
	DrawText(twod, BigFont, CR_UNTRANSLATED, x, origin.Y + 12, t, DTA_FullscreenScale, 3, DTA_VirtualWidth, 320, DTA_VirtualHeight, 200, DTA_ScaleX, scale, DTA_ScaleY, scale, TAG_DONE);
}

void GameInterface::DrawCenteredTextScreen(const DVector2 &origin, const char *text, int position, bool bg)
{
	if (bg) Menu_DrawBackground(origin);
	else if (!isRR())
	{
		Menu_DrawCursor(160, 130, 1, false);
	}
	::GameInterface::DrawCenteredTextScreen(origin, text, position, bg);
}


void GameInterface::QuitToTitle()
{
	ps[myconnectindex].gm = MODE_DEMO;
	artClearMapArt();
}

END_DUKE_NS

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


static TMenuClassDescriptor<Duke3d::DukeMainMenu> _mm("Duke.MainMenu");
static TMenuClassDescriptor<Duke3d::DukeListMenu> _lm("Duke.ListMenu");

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);
}