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game/client/hl1/hl1_hud_battery.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+
+#include "cbase.h"
+#include "hud.h"
+#include "hud_macros.h"
+#include "view.h"
+
+#include "iclientmode.h"
+
+#include <KeyValues.h>
+#include <vgui/ISurface.h>
+#include <vgui/ISystem.h>
+#include <vgui_controls/Panel.h>
+
+using namespace vgui;
+
+#include "hudelement.h"
+#include "hl1_hud_numbers.h"
+
+#include "convar.h"
+
+#define FADE_TIME	100
+#define MIN_ALPHA	100	
+
+//-----------------------------------------------------------------------------
+// Purpose: Health panel
+//-----------------------------------------------------------------------------
+class CHudBattery : public CHudElement, public CHL1HudNumbers
+{
+	DECLARE_CLASS_SIMPLE( CHudBattery, CHL1HudNumbers );
+
+public:
+	CHudBattery( const char *pElementName );
+
+	void			Init( void );
+	void			Reset( void );
+	void			VidInit( void );
+	void			MsgFunc_Battery(bf_read &msg);
+
+private:
+	void	Paint( void );
+	void	ApplySchemeSettings(vgui::IScheme *pScheme);
+
+private:
+	CHudTexture		*icon_suit_empty;
+	CHudTexture		*icon_suit_full;
+	int				m_iBattery;
+	float			m_flFade;
+};	
+
+DECLARE_HUDELEMENT( CHudBattery );
+DECLARE_HUD_MESSAGE( CHudBattery, Battery );
+
+//-----------------------------------------------------------------------------
+// Purpose: Constructor
+//-----------------------------------------------------------------------------
+CHudBattery::CHudBattery( const char *pElementName ) : CHudElement( pElementName ), BaseClass(NULL, "HudSuit")
+{
+	SetHiddenBits( HIDEHUD_HEALTH | HIDEHUD_NEEDSUIT );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CHudBattery::Init()
+{
+	HOOK_HUD_MESSAGE( CHudBattery, Battery );
+	Reset();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CHudBattery::Reset()
+{
+	m_iBattery	= 0;
+	m_flFade	= 0;
+}
+
+void CHudBattery::VidInit()
+{
+	Reset();
+
+	BaseClass::VidInit();
+}
+
+void CHudBattery::Paint()
+{
+	Color	clrHealth;
+	int		a;
+	int		x;
+	int		y;
+
+	BaseClass::Paint();
+
+	if ( !icon_suit_empty )
+	{
+		icon_suit_empty = gHUD.GetIcon( "suit_empty" );
+	}
+
+	if ( !icon_suit_full )
+	{
+		icon_suit_full = gHUD.GetIcon( "suit_full" );
+	}
+
+	if ( !icon_suit_empty || !icon_suit_full )
+	{
+		return;
+	}
+
+	// Has health changed? Flash the health #
+	if ( m_flFade )
+	{
+		if (m_flFade > FADE_TIME)
+			m_flFade = FADE_TIME;
+
+		m_flFade -= ( gpGlobals->frametime * 20 );
+		if ( m_flFade <= 0 )
+		{
+			a = 128;
+			m_flFade = 0;
+		}
+		else
+		{
+			// Fade the health number back to dim
+			a = MIN_ALPHA + ( m_flFade / FADE_TIME ) * 128;
+		}
+	}
+	else
+	{
+		a = MIN_ALPHA;
+	}
+
+	int r, g, b, nUnused;
+	(gHUD.m_clrYellowish).GetColor( r, g, b, nUnused );
+	clrHealth.SetColor( r, g, b, a );
+
+	int nFontHeight	= GetNumberFontHeight();
+
+	int nHudElemWidth, nHudElemHeight;
+	GetSize( nHudElemWidth, nHudElemHeight );
+
+	int iOffset = icon_suit_empty->Height() / 6;
+
+	x = nHudElemWidth / 5;
+	y = nHudElemHeight - ( nFontHeight * 1.5 );
+
+	icon_suit_empty->DrawSelf( x, y - iOffset, clrHealth );
+
+	if ( m_iBattery > 0 )
+	{
+		int nSuitOffset = icon_suit_full->Height() * ((float)(100-(MIN(100,m_iBattery))) * 0.01);	// battery can go from 0 to 100 so * 0.01 goes from 0 to 1
+		icon_suit_full->DrawSelfCropped( x, y - iOffset + nSuitOffset, 0, nSuitOffset, icon_suit_full->Width(), icon_suit_full->Height() - nSuitOffset, clrHealth );
+	}
+
+	x += icon_suit_empty->Width();
+	DrawHudNumber( x, y, m_iBattery, clrHealth );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CHudBattery::MsgFunc_Battery( bf_read &msg )
+{
+	int x = msg.ReadShort();
+
+	if ( x != m_iBattery )
+	{
+		m_flFade	= FADE_TIME;
+		m_iBattery	= x;
+	}
+}
+
+void CHudBattery::ApplySchemeSettings(vgui::IScheme *pScheme)
+{
+	BaseClass::ApplySchemeSettings(pScheme);
+	SetPaintBackgroundEnabled(false);
+}