1 files changed, 93 insertions, 0 deletions
diff --git a/mp/src/game/server/player_pickup.h b/mp/src/game/server/player_pickup.h
new file mode 100644
index 00000000..55982889
--- /dev/null
+++ b/mp/src/game/server/player_pickup.h
@@ -0,0 +1,93 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: APIs for player pickup of physics objects
+//
+//=============================================================================//
+
+#ifndef PLAYER_PICKUP_H
+#define PLAYER_PICKUP_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#ifdef HL2_DLL
+// Needed for launch velocity
+extern ConVar physcannon_minforce;
+extern ConVar physcannon_maxforce;
+#endif
+
+// Reasons behind a pickup
+enum PhysGunPickup_t
+{
+	PICKED_UP_BY_CANNON,
+	PUNTED_BY_CANNON,
+	PICKED_UP_BY_PLAYER, // Picked up by +USE, not physgun.
+};
+
+// Reasons behind a drop
+enum PhysGunDrop_t
+{
+	DROPPED_BY_PLAYER,
+	THROWN_BY_PLAYER,
+	DROPPED_BY_CANNON,
+	LAUNCHED_BY_CANNON,
+};
+
+enum PhysGunForce_t
+{
+	PHYSGUN_FORCE_DROPPED,	// Dropped by +USE
+	PHYSGUN_FORCE_THROWN,	// Thrown from +USE
+	PHYSGUN_FORCE_PUNTED,	// Punted by cannon
+	PHYSGUN_FORCE_LAUNCHED,	// Launched by cannon
+};
+
+void PlayerPickupObject( CBasePlayer *pPlayer, CBaseEntity *pObject );
+void Pickup_ForcePlayerToDropThisObject( CBaseEntity *pTarget );
+
+void Pickup_OnPhysGunDrop( CBaseEntity *pDroppedObject, CBasePlayer *pPlayer, PhysGunDrop_t reason );
+void Pickup_OnPhysGunPickup( CBaseEntity *pPickedUpObject, CBasePlayer *pPlayer, PhysGunPickup_t reason = PICKED_UP_BY_CANNON );
+bool Pickup_OnAttemptPhysGunPickup( CBaseEntity *pPickedUpObject, CBasePlayer *pPlayer, PhysGunPickup_t reason = PICKED_UP_BY_CANNON );
+bool Pickup_GetPreferredCarryAngles( CBaseEntity *pObject, CBasePlayer *pPlayer, matrix3x4_t &localToWorld, QAngle &outputAnglesWorldSpace );
+bool Pickup_ForcePhysGunOpen( CBaseEntity *pObject, CBasePlayer *pPlayer );
+bool Pickup_ShouldPuntUseLaunchForces( CBaseEntity *pObject, PhysGunForce_t reason );
+AngularImpulse Pickup_PhysGunLaunchAngularImpulse( CBaseEntity *pObject, PhysGunForce_t reason );
+Vector Pickup_DefaultPhysGunLaunchVelocity( const Vector &vecForward, float flMass );
+Vector Pickup_PhysGunLaunchVelocity( CBaseEntity *pObject, const Vector &vecForward, PhysGunForce_t reason );
+
+CBaseEntity	*Pickup_OnFailedPhysGunPickup( CBaseEntity *pPickedUpObject, Vector vPhysgunPos );
+
+abstract_class IPlayerPickupVPhysics
+{
+public:
+	// Callbacks for the physgun/cannon picking up an entity
+	virtual bool			OnAttemptPhysGunPickup( CBasePlayer *pPhysGunUser, PhysGunPickup_t reason = PICKED_UP_BY_CANNON ) = 0;
+	virtual CBaseEntity		*OnFailedPhysGunPickup( Vector vPhysgunPos ) = 0;
+	virtual void			OnPhysGunPickup( CBasePlayer *pPhysGunUser, PhysGunPickup_t reason = PICKED_UP_BY_CANNON ) = 0;
+	virtual void			OnPhysGunDrop( CBasePlayer *pPhysGunUser, PhysGunDrop_t Reason ) = 0;
+	virtual bool			HasPreferredCarryAnglesForPlayer( CBasePlayer *pPlayer = NULL ) = 0;
+	virtual QAngle			PreferredCarryAngles( void )  = 0;
+	virtual bool			ForcePhysgunOpen( CBasePlayer *pPlayer ) = 0;
+	virtual AngularImpulse	PhysGunLaunchAngularImpulse() = 0;
+	virtual bool			ShouldPuntUseLaunchForces( PhysGunForce_t reason ) = 0;
+	virtual Vector			PhysGunLaunchVelocity( const Vector &vecForward, float flMass ) = 0;
+};
+
+class CDefaultPlayerPickupVPhysics : public IPlayerPickupVPhysics
+{
+public:
+	virtual bool			OnAttemptPhysGunPickup( CBasePlayer *pPhysGunUser, PhysGunPickup_t reason = PICKED_UP_BY_CANNON ) { return true; }
+	virtual CBaseEntity		*OnFailedPhysGunPickup( Vector vPhysgunPos ) { return NULL; }
+	virtual void			OnPhysGunPickup( CBasePlayer *pPhysGunUser, PhysGunPickup_t reason = PICKED_UP_BY_CANNON ) {}
+	virtual void			OnPhysGunDrop( CBasePlayer *pPhysGunUser, PhysGunDrop_t reason ) {}
+	virtual bool			HasPreferredCarryAnglesForPlayer( CBasePlayer *pPlayer ) { return false; }
+	virtual QAngle			PreferredCarryAngles( void ) { return vec3_angle; }
+	virtual bool			ForcePhysgunOpen( CBasePlayer *pPlayer ) { return false; }
+	virtual AngularImpulse	PhysGunLaunchAngularImpulse() { return RandomAngularImpulse( -600, 600 ); }
+	virtual bool			ShouldPuntUseLaunchForces( PhysGunForce_t reason ) { return false; }
+	virtual Vector			PhysGunLaunchVelocity( const Vector &vecForward, float flMass )
+	{
+		return Pickup_DefaultPhysGunLaunchVelocity( vecForward, flMass );
+	}
+};
+
+#endif // PLAYER_PICKUP_H