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game/client/hl2/hud_flashlight.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#include "cbase.h"
+#include "hudelement.h"
+#include "hud_numericdisplay.h"
+#include <vgui_controls/Panel.h>
+#include "hud.h"
+#include "hud_suitpower.h"
+#include "hud_macros.h"
+#include "iclientmode.h"
+#include <vgui_controls/AnimationController.h>
+#include <vgui/ISurface.h>
+#include "c_basehlplayer.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+//-----------------------------------------------------------------------------
+// Purpose: Shows the flashlight icon
+//-----------------------------------------------------------------------------
+class CHudFlashlight : public CHudElement, public vgui::Panel
+{
+	DECLARE_CLASS_SIMPLE( CHudFlashlight, vgui::Panel );
+
+public:
+	CHudFlashlight( const char *pElementName );
+	virtual void ApplySchemeSettings( vgui::IScheme *pScheme );
+
+protected:
+	virtual void Paint();
+
+private:
+	void SetFlashlightState( bool flashlightOn );
+	void Reset( void );
+	
+	bool	m_bFlashlightOn;
+	CPanelAnimationVar( vgui::HFont, m_hFont, "Font", "WeaponIconsSmall" );
+	CPanelAnimationVarAliasType( float, m_IconX, "icon_xpos", "4", "proportional_float" );
+	CPanelAnimationVarAliasType( float, m_IconY, "icon_ypos", "4", "proportional_float" );
+	
+	CPanelAnimationVarAliasType( float, m_flBarInsetX, "BarInsetX", "2", "proportional_float" );
+	CPanelAnimationVarAliasType( float, m_flBarInsetY, "BarInsetY", "18", "proportional_float" );
+
+	CPanelAnimationVarAliasType( float, m_flBarWidth, "BarWidth", "28", "proportional_float" );
+	CPanelAnimationVarAliasType( float, m_flBarHeight, "BarHeight", "2", "proportional_float" );
+	CPanelAnimationVarAliasType( float, m_flBarChunkWidth, "BarChunkWidth", "2", "proportional_float" );
+	CPanelAnimationVarAliasType( float, m_flBarChunkGap, "BarChunkGap", "2", "proportional_float" );
+};	
+
+using namespace vgui;
+
+#ifdef HL2_EPISODIC
+DECLARE_HUDELEMENT( CHudFlashlight );
+#endif // HL2_EPISODIC
+
+//-----------------------------------------------------------------------------
+// Purpose: Constructor
+//-----------------------------------------------------------------------------
+CHudFlashlight::CHudFlashlight( const char *pElementName ) : CHudElement( pElementName ), BaseClass( NULL, "HudFlashlight" )
+{
+	vgui::Panel *pParent = g_pClientMode->GetViewport();
+	SetParent( pParent );
+
+	SetHiddenBits( HIDEHUD_HEALTH | HIDEHUD_PLAYERDEAD | HIDEHUD_NEEDSUIT );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : *pScheme - 
+//-----------------------------------------------------------------------------
+void CHudFlashlight::ApplySchemeSettings( vgui::IScheme *pScheme )
+{
+	BaseClass::ApplySchemeSettings(pScheme);
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Start with our background off
+//-----------------------------------------------------------------------------
+void CHudFlashlight::Reset( void )
+{
+	g_pClientMode->GetViewportAnimationController()->StartAnimationSequence( "SuitFlashlightOn" ); 
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: data accessor
+//-----------------------------------------------------------------------------
+void CHudFlashlight::SetFlashlightState( bool flashlightOn )
+{
+	if ( m_bFlashlightOn == flashlightOn )
+		return;
+
+	m_bFlashlightOn = flashlightOn;
+}
+
+#define WCHAR_FLASHLIGHT_ON  169
+#define WCHAR_FLASHLIGHT_OFF 174
+
+//-----------------------------------------------------------------------------
+// Purpose: draws the flashlight icon
+//-----------------------------------------------------------------------------
+void CHudFlashlight::Paint()
+{
+#ifdef HL2_EPISODIC
+	C_BaseHLPlayer *pPlayer = (C_BaseHLPlayer *)C_BasePlayer::GetLocalPlayer();
+	if ( !pPlayer )
+		return;
+
+	// Only paint if we're using the new flashlight code
+	if ( pPlayer->m_HL2Local.m_flFlashBattery < 0.0f )
+	{
+		SetPaintBackgroundEnabled( false );
+		return;
+	}
+
+	bool bIsOn = pPlayer->IsEffectActive( EF_DIMLIGHT );
+	SetFlashlightState( bIsOn );
+
+	// get bar chunks
+	int chunkCount = m_flBarWidth / (m_flBarChunkWidth + m_flBarChunkGap);
+	int enabledChunks = (int)((float)chunkCount * (pPlayer->m_HL2Local.m_flFlashBattery * 1.0f/100.0f) + 0.5f );
+
+	Color clrFlashlight;
+	clrFlashlight = ( enabledChunks < ( chunkCount / 4 ) ) ? gHUD.m_clrCaution : gHUD.m_clrNormal;
+	clrFlashlight[3] = ( bIsOn ) ? 255: 32;
+
+	// Pick the right character given our current state
+	wchar_t pState = ( bIsOn ) ? WCHAR_FLASHLIGHT_ON : WCHAR_FLASHLIGHT_OFF;
+
+	surface()->DrawSetTextFont( m_hFont );
+	surface()->DrawSetTextColor( clrFlashlight );
+	surface()->DrawSetTextPos( m_IconX, m_IconY );
+	surface()->DrawUnicodeChar( pState );
+
+	// Don't draw the progress bar is we're fully charged
+	if ( bIsOn == false && chunkCount == enabledChunks )
+		return;
+
+	// draw the suit power bar
+	surface()->DrawSetColor( clrFlashlight );
+	int xpos = m_flBarInsetX, ypos = m_flBarInsetY;
+	for (int i = 0; i < enabledChunks; i++)
+	{
+		surface()->DrawFilledRect( xpos, ypos, xpos + m_flBarChunkWidth, ypos + m_flBarHeight );
+		xpos += (m_flBarChunkWidth + m_flBarChunkGap);
+	}
+	
+	// Be even less transparent than we already are
+	clrFlashlight[3] = clrFlashlight[3] / 8;
+
+	// draw the exhausted portion of the bar.
+	surface()->DrawSetColor( clrFlashlight );
+	for (int i = enabledChunks; i < chunkCount; i++)
+	{
+		surface()->DrawFilledRect( xpos, ypos, xpos + m_flBarChunkWidth, ypos + m_flBarHeight );
+		xpos += (m_flBarChunkWidth + m_flBarChunkGap);
+	}
+#endif // HL2_EPISODIC
+}