TWHL - Abbadon - hud_overheat.cpp

/***
*
*   Copyright (c) 1999, 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_overheat.cpp - Source of the CHudOverheat class.
//

#include "hud.h"
#include "cl_util.h"
#include "parsemsg.h"

DECLARE_MESSAGE( m_Overheat, Overheat );

int CHudOverheat::Init( void )
{
    HOOK_MESSAGE( Overheat );
    m_iHeat = 0;
    m_iFlags |= HUD_ACTIVE;
    gHUD.AddHudElem( this );
    return 1;
}

int CHudOverheat::Draw( float flTime )
{
    // Don't draw this HUD if the health is told to be hidden or we are in spectator mode
    if ( (gHUD.m_iHideHUDDisplay & HIDEHUD_HEALTH) || gEngfuncs.IsSpectateOnly() )
        return 1;

    // Don't draw this HUD if we don't have the HEV suit.
    if ( !(gHUD.m_iWeaponBits & (1 << WEAPON_SUIT)) )
        return 1;

    // Don't draw this HUD if we are using anything else than the MP5
    if ( !gHUD.m_Ammo.GetCurrentWeapon() || gHUD.m_Ammo.GetCurrentWeapon()->iId != 4 ) // 4 = WEAPON_MP5 - Look at "weapons.h" for the proper value
        return 1;

    if ( m_iHeat > 0 )
    {
        int iWidth = XRES( 340 );
        int iHeight = YRES( 10 );
        int iBarWidth = XRES( 1 );
        int iBarHeight = XRES( 1 );
        int iPosX = (ScreenWidth - iWidth) / 2;
        int iPosY = (ScreenHeight - iHeight) / 2 + YRES( 50 );
        int iRed = 0;
        int iGreen = 0;
        int iBlue = 0;

        PercentageToColor( m_iHeat, iRed, iGreen, iBlue );
        FillRGBA( iPosX + iBarWidth * 2, iPosY + iBarHeight * 2, CalculatePercentage( iWidth, iBarWidth ), iHeight - 4 * iBarHeight, iRed, iGreen, iBlue, 255 );
    }

    return 1;
}

int CHudOverheat::MsgFunc_Overheat( const char *pszName, int iSize, void *pbuf )
{
    BEGIN_READ( pbuf, iSize );
    m_iHeat = READ_BYTE();
    return 1;
}

int CHudOverheat::CalculatePercentage( const int _iWidth, const int _iBarWidth )
{
    return (int)((m_iHeat / 100.0f) * (_iWidth - 4 * _iBarWidth));
}

void CHudOverheat::PercentageToColor( const int _iPercentage, int &_iRed, int &_iGreen, int &_iBlue )
{
    _iRed = (255 * _iPercentage) / 100;
    _iGreen = (255 * (100 - _iPercentage)) / 100;
    _iBlue = 0;
}