From c013e72caa348851eb3bed0f421d478ac9e8ba15 Mon Sep 17 00:00:00 2001
From: Braden Obrzut <admin@maniacsvault.net>
Date: Thu, 8 Sep 2011 01:28:26 +0000
Subject: [PATCH] - Backported VisibleToTeam and VisibleToPlayerClass from
 Skulltag with some modifications.

SVN r3290 (trunk)
---
 src/actor.h                          |  9 +++++++++
 src/p_mobj.cpp                       | 29 ++++++++++++++++++++++++++++
 src/r_things.cpp                     |  3 ++-
 src/thingdef/thingdef_properties.cpp | 18 +++++++++++++++++
 4 files changed, 58 insertions(+), 1 deletion(-)

diff --git a/src/actor.h b/src/actor.h
index e7dece16b..713fc0139 100644
--- a/src/actor.h
+++ b/src/actor.h
@@ -763,6 +763,8 @@ public:
 		return bloodcls;
 	}
 
+	bool IsVisibleToPlayer() const;
+
 	// Calculate amount of missile damage
 	virtual int GetMissileDamage(int mask, int add);
 
@@ -814,6 +816,13 @@ public:
 	DWORD			flags4;			// [RH] Even more flags!
 	DWORD			flags5;			// OMG! We need another one.
 	DWORD			flags6;			// Shit! Where did all the flags go?
+
+	// [BB] If 0, everybody can see the actor, if > 0, only members of team (VisibleToTeam-1) can see it.
+	DWORD			VisibleToTeam;
+
+	// [BB] If NAME_None, all players can see the actor, else only players whose playerclass name is VisibleToPlayerClass can see it.
+	FNameNoInit		VisibleToPlayerClass;
+
 	int				special1;		// Special info
 	int				special2;		// Special info
 	int 			health;
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index 36339ffee..814fb1e42 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -310,6 +310,7 @@ void AActor::Serialize (FArchive &arc)
 		<< smokecounter
 		<< BlockingMobj
 		<< BlockingLine
+		<< VisibleToTeam // [BB]
 		<< pushfactor
 		<< Species
 		<< Score;
@@ -871,6 +872,34 @@ bool AActor::CheckLocalView (int playernum) const
 	return false;
 }
 
+//============================================================================
+//
+// AActor :: IsVisibleToPlayer
+//
+// Returns true if this actor should be seen by the console player.
+//
+//============================================================================
+
+bool AActor::IsVisibleToPlayer() const
+{
+	// [BB] Safety check. This should never be NULL. Nevertheless, we return true to leave the default ZDoom behavior unaltered.
+	if ( players[consoleplayer].camera == NULL )
+		return true;
+ 
+	if ( VisibleToTeam != 0 && teamplay &&
+		VisibleToTeam-1 != players[consoleplayer].userinfo.team )
+		return false;
+
+	const player_t* pPlayer = players[consoleplayer].camera->player;
+
+	if ( ( VisibleToPlayerClass != NAME_None )
+		&& pPlayer && pPlayer->mo && ( VisibleToPlayerClass != pPlayer->mo->GetClass()->TypeName ) )
+		return false;
+
+	// [BB] Passed all checks.
+	return true;
+}
+
 //============================================================================
 //
 // AActor :: ConversationAnimation
diff --git a/src/r_things.cpp b/src/r_things.cpp
index f604549c6..ec8ec89f1 100644
--- a/src/r_things.cpp
+++ b/src/r_things.cpp
@@ -495,7 +495,8 @@ void R_ProjectSprite (AActor *thing, int fakeside, F3DFloor *fakefloor, F3DFloor
 	// Don't waste time projecting sprites that are definitely not visible.
 	if (thing == NULL ||
 		(thing->renderflags & RF_INVISIBLE) ||
-		!thing->RenderStyle.IsVisible(thing->alpha))
+		!thing->RenderStyle.IsVisible(thing->alpha) ||
+		!thing->IsVisibleToPlayer())
 	{
 		return;
 	}
diff --git a/src/thingdef/thingdef_properties.cpp b/src/thingdef/thingdef_properties.cpp
index 558caa6c1..04ffd9d28 100644
--- a/src/thingdef/thingdef_properties.cpp
+++ b/src/thingdef/thingdef_properties.cpp
@@ -1234,6 +1234,24 @@ DEFINE_PROPERTY(designatedteam, I, Actor)
 	defaults->DesignatedTeam = val;
 }
 
+//==========================================================================
+// [BB]
+//==========================================================================
+DEFINE_PROPERTY(visibletoteam, I, Actor)
+{
+	PROP_INT_PARM(i, 0);
+	defaults->VisibleToTeam=i+1;
+}
+
+//==========================================================================
+// [BB]
+//==========================================================================
+DEFINE_PROPERTY(visibletoplayerclass, S, Actor)
+{
+	PROP_STRING_PARM(n, 0);
+	defaults->VisibleToPlayerClass = n;
+}
+
 //==========================================================================
 //
 // Special inventory properties