/***
*
*	Copyright (c) 1996-2002, Valve LLC. All rights reserved.
*	
*	This product contains software technology licensed from Id 
*	Software, Inc. ("Id Technology").  Id Technology (c) 1996 Id Software, Inc. 
*	All Rights Reserved.
*
*   Use, distribution, and modification of this source code and/or resulting
*   object code is restricted to non-commercial enhancements to products from
*   Valve LLC.  All other use, distribution, or modification is prohibited
*   without written permission from Valve LLC.
*
****/
//
// hud.cpp
//
// implementation of CHud class
//

#include "hud.h"
#include "cl_util.h"
#include <string.h>
#include <stdio.h>
#include "parsemsg.h"
#include "hud_servers.h"

#include "demo.h"
#include "demo_api.h"

cvar_t *hud_textmode;
float g_hud_text_color[3];

extern client_sprite_t *GetSpriteList( client_sprite_t *pList, const char *psz, int iRes, int iCount );

extern cvar_t *sensitivity;
cvar_t *cl_lw = NULL;

void ShutdownInput( void );

//DECLARE_MESSAGE( m_Logo, Logo )
int __MsgFunc_Logo( const char *pszName, int iSize, void *pbuf )
{
	return gHUD.MsgFunc_Logo( pszName, iSize, pbuf );
}

//DECLARE_MESSAGE( m_Logo, Logo )
int __MsgFunc_ResetHUD( const char *pszName, int iSize, void *pbuf )
{
	return gHUD.MsgFunc_ResetHUD( pszName, iSize, pbuf );
}

int __MsgFunc_InitHUD( const char *pszName, int iSize, void *pbuf )
{
	gHUD.MsgFunc_InitHUD( pszName, iSize, pbuf );
	return 1;
}

int __MsgFunc_ViewMode( const char *pszName, int iSize, void *pbuf )
{
	gHUD.MsgFunc_ViewMode( pszName, iSize, pbuf );
	return 1;
}

int __MsgFunc_SetFOV( const char *pszName, int iSize, void *pbuf )
{
	return gHUD.MsgFunc_SetFOV( pszName, iSize, pbuf );
}

int __MsgFunc_Concuss( const char *pszName, int iSize, void *pbuf )
{
	return gHUD.MsgFunc_Concuss( pszName, iSize, pbuf );
}

int __MsgFunc_GameMode( const char *pszName, int iSize, void *pbuf )
{
	return gHUD.MsgFunc_GameMode( pszName, iSize, pbuf );
}

// TFFree Command Menu
void __CmdFunc_OpenCommandMenu( void )
{
}

// TFC "special" command
void __CmdFunc_InputPlayerSpecial( void )
{
}

void __CmdFunc_CloseCommandMenu( void )
{
}

void __CmdFunc_ForceCloseCommandMenu( void )
{
}

void __CmdFunc_ToggleServerBrowser( void )
{
}

// TFFree Command Menu Message Handlers
int __MsgFunc_ValClass( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}

int __MsgFunc_TeamNames( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}

int __MsgFunc_Feign( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}

int __MsgFunc_Detpack( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}

int __MsgFunc_VGUIMenu( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}

int __MsgFunc_BuildSt( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}

int __MsgFunc_RandomPC( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}
 
int __MsgFunc_ServerName( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}

int __MsgFunc_Spectator( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}

int __MsgFunc_AllowSpec( const char *pszName, int iSize, void *pbuf )
{
	return 0;
}
 
// This is called every time the DLL is loaded
void CHud::Init( void )
{
	HOOK_MESSAGE( Logo );
	HOOK_MESSAGE( ResetHUD );
	HOOK_MESSAGE( GameMode );
	HOOK_MESSAGE( InitHUD );
	HOOK_MESSAGE( ViewMode );
	HOOK_MESSAGE( SetFOV );
	HOOK_MESSAGE( Concuss );

	// TFFree CommandMenu
	HOOK_COMMAND( "+commandmenu", OpenCommandMenu );
	HOOK_COMMAND( "-commandmenu", CloseCommandMenu );
	HOOK_COMMAND( "ForceCloseCommandMenu", ForceCloseCommandMenu );
	HOOK_COMMAND( "special", InputPlayerSpecial );
	HOOK_COMMAND( "togglebrowser", ToggleServerBrowser );

	HOOK_MESSAGE( ValClass );
	HOOK_MESSAGE( TeamNames );
	HOOK_MESSAGE( Feign );
	HOOK_MESSAGE( Detpack );
	HOOK_MESSAGE( BuildSt );
	HOOK_MESSAGE( RandomPC );
	HOOK_MESSAGE( ServerName );

	HOOK_MESSAGE( Spectator );
	HOOK_MESSAGE( AllowSpec );

	// VGUI Menus
	HOOK_MESSAGE( VGUIMenu );

	CVAR_CREATE( "hud_classautokill", "1", FCVAR_ARCHIVE | FCVAR_USERINFO );		// controls whether or not to suicide immediately on TF class switch
	CVAR_CREATE( "hud_takesshots", "0", FCVAR_ARCHIVE );		// controls whether or not to automatically take screenshots at the end of a round
	hud_textmode = CVAR_CREATE ( "hud_textmode", "0", FCVAR_ARCHIVE );

	m_iLogo = 0;
	m_iFOV = 0;

	CVAR_CREATE( "zoom_sensitivity_ratio", "1.2", 0 );
	default_fov = CVAR_CREATE( "default_fov", "90", 0 );
	m_pCvarStealMouse = CVAR_CREATE( "hud_capturemouse", "1", FCVAR_ARCHIVE );
	m_pCvarDraw = CVAR_CREATE( "hud_draw", "1", FCVAR_ARCHIVE );
	cl_lw = gEngfuncs.pfnGetCvarPointer( "cl_lw" );

	m_pSpriteList = NULL;

	// Clear any old HUD list
	if( m_pHudList )
	{
		HUDLIST *pList;
		while ( m_pHudList )
		{
			pList = m_pHudList;
			m_pHudList = m_pHudList->pNext;
			free( pList );
		}
		m_pHudList = NULL;
	}

	// In case we get messages before the first update -- time will be valid
	m_flTime = 1.0;

	m_Ammo.Init();
	m_Health.Init();
	m_SayText.Init();
	m_Spectator.Init();
	m_Geiger.Init();
	m_Train.Init();
	m_Battery.Init();
	m_Flash.Init();
	m_Message.Init();
	m_StatusBar.Init();
	m_DeathNotice.Init();
	m_AmmoSecondary.Init();
	m_TextMessage.Init();
	m_StatusIcons.Init();
	m_MOTD.Init();
	m_Scoreboard.Init();
	m_Zoom.Init();

	m_Menu.Init();
	
	MsgFunc_ResetHUD( 0, 0, NULL );
}

// CHud destructor
// cleans up memory allocated for m_rg* arrays
CHud::~CHud()
{
	delete[] m_rghSprites;
	delete[] m_rgrcRects;
	delete[] m_rgszSpriteNames;

	if( m_pHudList )
	{
		HUDLIST *pList;
		while( m_pHudList )
		{
			pList = m_pHudList;
			m_pHudList = m_pHudList->pNext;
			free( pList );
		}
		m_pHudList = NULL;
	}
}

// GetSpriteIndex()
// searches through the sprite list loaded from hud.txt for a name matching SpriteName
// returns an index into the gHUD.m_rghSprites[] array
// returns 0 if sprite not found
int CHud::GetSpriteIndex( const char *SpriteName )
{
	// look through the loaded sprite name list for SpriteName
	for( int i = 0; i < m_iSpriteCount; i++ )
	{
		if( strncmp( SpriteName, m_rgszSpriteNames + ( i * MAX_SPRITE_NAME_LENGTH), MAX_SPRITE_NAME_LENGTH ) == 0 )
			return i;
	}

	return -1; // invalid sprite
}

void CHud::VidInit( void )
{
	int j;
	m_scrinfo.iSize = sizeof(m_scrinfo);
	GetScreenInfo( &m_scrinfo );

	// ----------
	// Load Sprites
	// ---------
	//m_hsprFont = LoadSprite("sprites/%d_font.spr");

	m_hsprLogo = 0;	
	m_hsprCursor = 0;

	if( ScreenWidth < 640 )
		m_iRes = 320;
	else
		m_iRes = 640;

	// Only load this once
	if( !m_pSpriteList )
	{
		// we need to load the hud.txt, and all sprites within
		m_pSpriteList = SPR_GetList( "sprites/hud.txt", &m_iSpriteCountAllRes );

		if( m_pSpriteList )
		{
			// count the number of sprites of the appropriate res
			m_iSpriteCount = 0;
			client_sprite_t *p = m_pSpriteList;
			for( j = 0; j < m_iSpriteCountAllRes; j++ )
			{
				if( p->iRes == m_iRes )
					m_iSpriteCount++;
				p++;
			}

			// allocated memory for sprite handle arrays
 			m_rghSprites = new HSPRITE[m_iSpriteCount];
			m_rgrcRects = new wrect_t[m_iSpriteCount];
			m_rgszSpriteNames = new char[m_iSpriteCount * MAX_SPRITE_NAME_LENGTH];

			p = m_pSpriteList;
			int index = 0;
			for( j = 0; j < m_iSpriteCountAllRes; j++ )
			{
				if( p->iRes == m_iRes )
				{
					char sz[256];
					sprintf( sz, "sprites/%s.spr", p->szSprite );
					m_rghSprites[index] = SPR_Load( sz );
					m_rgrcRects[index] = p->rc;
					strncpy( &m_rgszSpriteNames[index * MAX_SPRITE_NAME_LENGTH], p->szName, MAX_SPRITE_NAME_LENGTH );

					index++;
				}

				p++;
			}
		}
	}
	else
	{
		// we have already have loaded the sprite reference from hud.txt, but
		// we need to make sure all the sprites have been loaded (we've gone through a transition, or loaded a save game)
		client_sprite_t *p = m_pSpriteList;

		// count the number of sprites of the appropriate res
		m_iSpriteCount = 0;
		for( j = 0; j < m_iSpriteCountAllRes; j++ )
		{
			if( p->iRes == m_iRes )
				m_iSpriteCount++;
			p++;
		}

		delete[] m_rghSprites;
		delete[] m_rgrcRects;
		delete[] m_rgszSpriteNames;

		// allocated memory for sprite handle arrays
 		m_rghSprites = new HSPRITE[m_iSpriteCount];
		m_rgrcRects = new wrect_t[m_iSpriteCount];
		m_rgszSpriteNames = new char[m_iSpriteCount * MAX_SPRITE_NAME_LENGTH];

		p = m_pSpriteList;
		int index = 0;
		for( j = 0; j < m_iSpriteCountAllRes; j++ )
		{
			if( p->iRes == m_iRes )
			{
				char sz[256];
				sprintf( sz, "sprites/%s.spr", p->szSprite );
				m_rghSprites[index] = SPR_Load( sz );
				m_rgrcRects[index] = p->rc;
				strncpy( &m_rgszSpriteNames[index * MAX_SPRITE_NAME_LENGTH], p->szName, MAX_SPRITE_NAME_LENGTH );

				index++;
			}

			p++;
		}
	}

	// assumption: number_1, number_2, etc, are all listed and loaded sequentially
	m_HUD_number_0 = GetSpriteIndex( "number_0" );

	m_iFontHeight = m_rgrcRects[m_HUD_number_0].bottom - m_rgrcRects[m_HUD_number_0].top;

	m_Ammo.VidInit();
	m_Health.VidInit();
	m_Spectator.VidInit();
	m_Geiger.VidInit();
	m_Train.VidInit();
	m_Battery.VidInit();
	m_Flash.VidInit();
	m_Message.VidInit();
	m_StatusBar.VidInit();
	m_DeathNotice.VidInit();
	m_SayText.VidInit();
	m_Menu.VidInit();
	m_AmmoSecondary.VidInit();
	m_TextMessage.VidInit();
	m_StatusIcons.VidInit();
	m_Scoreboard.VidInit();
	m_MOTD.VidInit();
m_Zoom.VidInit();
}

int CHud::MsgFunc_Logo( const char *pszName,  int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );

	// update Train data
	m_iLogo = READ_BYTE();

	return 1;
}

float g_lastFOV = 0.0;

/*
============
COM_FileBase
============
*/
// Extracts the base name of a file (no path, no extension, assumes '/' as path separator)
void COM_FileBase ( const char *in, char *out )
{
	int len, start, end;

	len = strlen( in );

	// scan backward for '.'
	end = len - 1;
	while( end && in[end] != '.' && in[end] != '/' && in[end] != '\\' )
		end--;

	if( in[end] != '.' )		// no '.', copy to end
		end = len - 1;
	else 
		end--;					// Found ',', copy to left of '.'

	// Scan backward for '/'
	start = len - 1;
	while( start >= 0 && in[start] != '/' && in[start] != '\\' )
		start--;

	if( in[start] != '/' && in[start] != '\\' )
		start = 0;
	else 
		start++;

	// Length of new sting
	len = end - start + 1;

	// Copy partial string
	strncpy( out, &in[start], len );

	// Terminate it
	out[len] = 0;
}

/*
=================
HUD_IsGame

=================
*/
int HUD_IsGame( const char *game )
{
	const char *gamedir;
	char gd[1024];

	gamedir = gEngfuncs.pfnGetGameDirectory();
	if( gamedir && gamedir[0] )
	{
		COM_FileBase( gamedir, gd );
		if( !stricmp( gd, game ) )
			return 1;
	}
	return 0;
}

/*
=====================
HUD_GetFOV

Returns last FOV
=====================
*/
float HUD_GetFOV( void )
{
	if( gEngfuncs.pDemoAPI->IsRecording() )
	{
		// Write it
		int i = 0;
		unsigned char buf[100];

		// Active
		*(float *)&buf[i] = g_lastFOV;
		i += sizeof(float);

		Demo_WriteBuffer( TYPE_ZOOM, i, buf );
	}

	if( gEngfuncs.pDemoAPI->IsPlayingback() )
	{
		g_lastFOV = g_demozoom;
	}
	return g_lastFOV;
}

int CHud::MsgFunc_SetFOV( const char *pszName,  int iSize, void *pbuf )
{
	BEGIN_READ( pbuf, iSize );

	int newfov = READ_BYTE();
	int def_fov = CVAR_GET_FLOAT( "default_fov" );

	//Weapon prediction already takes care of changing the fog. ( g_lastFOV ).
	if( cl_lw && cl_lw->value )
		return 1;

	g_lastFOV = newfov;

	if( newfov == 0 )
	{
		m_iFOV = def_fov;
	}
	else
	{
		m_iFOV = newfov;
	}

	// the clients fov is actually set in the client data update section of the hud

	// Set a new sensitivity
	if( m_iFOV == def_fov )
	{  
		// reset to saved sensitivity
		m_flMouseSensitivity = 0;
	}
	else
	{  
		// set a new sensitivity that is proportional to the change from the FOV default
		m_flMouseSensitivity = sensitivity->value * ((float)newfov / (float)def_fov) * CVAR_GET_FLOAT("zoom_sensitivity_ratio");
	}

	return 1;
}

void CHud::AddHudElem( CHudBase *phudelem )
{
	HUDLIST *pdl, *ptemp;

	//phudelem->Think();

	if( !phudelem )
		return;

	pdl = (HUDLIST *)malloc( sizeof(HUDLIST) );
	if( !pdl )
		return;

	memset( pdl, 0, sizeof(HUDLIST) );
	pdl->p = phudelem;

	if( !m_pHudList )
	{
		m_pHudList = pdl;
		return;
	}

	ptemp = m_pHudList;

	while( ptemp->pNext )
		ptemp = ptemp->pNext;

	ptemp->pNext = pdl;
}

float CHud::GetSensitivity( void )
{
	return m_flMouseSensitivity;
}