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game/client/tf2/hud_targetreticle.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Target reticle hud element
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "hud.h"
+#include "c_basetfplayer.h"
+#include "tf_shareddefs.h"
+#include "iclientmode.h"
+#include "clientmode_tfnormal.h"
+#include "materialsystem/imaterial.h"
+#include "materialsystem/imesh.h"
+#include "hud_targetreticle.h"
+#include "model_types.h"
+#include "view_scene.h"
+#include "view.h"
+#include <vgui/Cursor.h>
+#include <vgui_controls/Controls.h>
+#include <vgui/ISurface.h>
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+CTargetReticle::CTargetReticle( void )
+: BaseClass( NULL, "CTargetReticle" ),
+  m_CursorNone(vgui::dc_none)
+{
+	SetCursor( m_CursorNone );
+
+	SetPaintBackgroundEnabled( false );
+	SetAutoDelete( false );
+	m_hTargetEntity = NULL;
+	m_pTargetLabel = NULL;
+	m_iReticleId = 0;
+	m_iReticleLeftId = 0;
+	m_iReticleRightId = 0;
+	m_iRenderTextureId = 0;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+CTargetReticle::~CTargetReticle()
+{
+	if ( m_pTargetLabel != NULL )
+	{
+		delete m_pTargetLabel;
+		m_pTargetLabel = NULL;
+	}
+
+	SetParent( (vgui::Panel *)NULL );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CTargetReticle::Init( C_BaseEntity *pEntity, const char *sName )
+{
+	vgui::Panel *pParent = GetClientModeNormal()->GetViewport();
+	SetParent( pParent );
+	SetCursor( pParent->GetCursor() );
+
+	if ( !m_pTargetLabel )
+	{
+		m_pTargetLabel = new vgui::Label( pParent, "TargetLabel", "Unnamed" );
+		m_pTargetLabel->SetPos( 0, 0 );
+		m_pTargetLabel->SetFgColor( Color( 255, 170, 0, 255 ) );
+		m_pTargetLabel->SetPaintBackgroundEnabled( false );
+		m_pTargetLabel->SetAutoDelete( false );
+		m_pTargetLabel->SetCursor( m_CursorNone );
+	}
+
+	SetSize( XRES(32),YRES(32) );
+	m_hTargetEntity = pEntity;
+	m_pTargetLabel->SetText( sName );
+
+	int contentW, contentH;
+	m_pTargetLabel->GetContentSize( contentW, contentH );
+	m_pTargetLabel->SetWide( contentW );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+C_BaseEntity *CTargetReticle::GetTarget( void )
+{
+	return m_hTargetEntity;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CTargetReticle::Update( void )
+{
+	if ( !m_hTargetEntity )
+	{
+		C_BaseTFPlayer *pPlayer = C_BaseTFPlayer::GetLocalPlayer();
+		pPlayer->Remove_Target( this );
+		return;
+	}
+
+	// Load our textures..
+	if ( !m_iReticleId )
+	{
+		m_iReticleId = vgui::surface()->CreateNewTextureID();
+		vgui::surface()->DrawSetTextureFile( m_iReticleId, "Hud/target_reticle" , true, false);
+	}
+	
+	if ( !m_iReticleLeftId )
+	{
+		m_iReticleLeftId = vgui::surface()->CreateNewTextureID();
+		vgui::surface()->DrawSetTextureFile( m_iReticleLeftId, "Hud/target_reticle_left", true, false );
+	}
+	
+	if ( !m_iReticleRightId )
+	{
+		m_iReticleRightId = vgui::surface()->CreateNewTextureID();
+		vgui::surface()->DrawSetTextureFile( m_iReticleRightId, "Hud/target_reticle_right" , true, false);
+	}
+
+	int iX, iY;
+	GetTargetInScreenSpace( m_hTargetEntity, iX, iY );
+	
+	int halfWidth = GetWide() / 2;
+	halfWidth = MAX( halfWidth, m_pTargetLabel->GetWide() / 2 );
+
+	m_iRenderTextureId = m_iReticleId;
+	if( iX < halfWidth || iX > ScreenWidth()-halfWidth )
+	{
+		// It's off the screen. See what side it's on.
+		Vector vCenter = m_hTargetEntity->WorldSpaceCenter( );
+		
+		if( CurrentViewRight().Dot( vCenter - CurrentViewOrigin() ) > 0 )
+		{
+			m_iRenderTextureId = m_iReticleRightId;
+			iX = ScreenWidth() - halfWidth;
+		}
+		else
+		{
+			m_iRenderTextureId = m_iReticleLeftId;
+			iX = halfWidth;
+		}
+
+		// Put Y in the center of the screen.
+		iY = ScreenHeight() / 2;
+	}
+
+	// Move the icon there
+	SetPos( iX - (GetWide() / 2), iY - (GetTall() / 2) );
+
+	// Center the text under it
+	m_pTargetLabel->SetPos( iX - (m_pTargetLabel->GetWide() / 2), iY + (GetTall() / 2) );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CTargetReticle::Paint()
+{
+	if ( !m_hTargetEntity || !m_iRenderTextureId )
+		return;
+
+	C_BaseTFPlayer *pPlayer = C_BaseTFPlayer::GetLocalPlayer();
+	if ( pPlayer == NULL || pPlayer->GetHealth() < 1 )
+		return;
+
+	// Show hide label based on EMP state
+	bool suppress_reticle = pPlayer->HasPowerup(POWERUP_EMP);
+
+	m_pTargetLabel->SetVisible( suppress_reticle ? false : true );
+
+	// Don't draw the reticle either
+	if ( suppress_reticle )
+		return;
+
+	vgui::surface()->DrawSetTexture( m_iRenderTextureId );
+	vgui::surface()->DrawSetColor( 255, 255, 255, 255 );
+	vgui::surface()->DrawTexturedRect( 0, 0, GetWide(), GetTall() );
+}
+