sm-exts/CollisionHook
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Handle some exceptional cases.

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This commit is contained in:
Ryan Stecker 2012-10-07 18:18:16 -05:00
parent fe86ca172c
commit c5f6bbd688
2 changed files with 19 additions and 0 deletions
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18
extension.cpp
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@ -52,6 +52,7 @@ DETOUR_DECL_STATIC2( PassServerEntityFilterFunc, bool, const IHandleEntity *, pT
cell_t ent1 = gamehelpers->EntityToBCompatRef( pEnt1 );
cell_t ent2 = gamehelpers->EntityToBCompatRef( pEnt2 );
// todo: do we want to fill result with with the game's result? perhaps the forward path is more performant...
cell_t result = 0;
g_pPassFwd->PushCell( ent1 );
g_pPassFwd->PushCell( ent2 );
@ -66,6 +67,7 @@ DETOUR_DECL_STATIC2( PassServerEntityFilterFunc, bool, const IHandleEntity *, pT
return result == 1;
}
// otherwise, game decides
return DETOUR_STATIC_CALL( PassServerEntityFilterFunc )( pTouch, pPass );
}
@ -133,7 +135,16 @@ bool CollisionHook::SDK_OnMetamodUnload(char *error, size_t maxlength)
IPhysicsEnvironment *CollisionHook::CreateEnvironment()
{
// in order to hook IPhysicsCollisionSolver::ShouldCollide, we need to know when a solver is installed
// in order to hook any installed solvers, we need to hook any created physics environments
IPhysicsEnvironment *pEnvironment = SH_CALL( g_pPhysics, &IPhysics::CreateEnvironment )();
Assert( pEnvironment );
if ( !pEnvironment )
RETURN_META_VALUE( MRES_SUPERCEDE, pEnvironment ); // just in case
// hook so we know when a solver is installed
SH_ADD_HOOK( IPhysicsEnvironment, SetCollisionSolver, pEnvironment, SH_MEMBER( this, &CollisionHook::SetCollisionSolver ), false );
RETURN_META_VALUE( MRES_SUPERCEDE, pEnvironment );
@ -141,6 +152,11 @@ IPhysicsEnvironment *CollisionHook::CreateEnvironment()
void CollisionHook::SetCollisionSolver( IPhysicsCollisionSolver *pSolver )
{
Assert( pSolver );
if ( !pSolver )
RETURN_META( MRES_IGNORED ); // this shouldn't happen, but knowing valve...
// the game is installing a solver, hook the func we want
SH_ADD_HOOK( IPhysicsCollisionSolver, ShouldCollide, pSolver, SH_MEMBER( this, &CollisionHook::VPhysics_ShouldCollide ), false );
RETURN_META( MRES_IGNORED );
@ -163,6 +179,7 @@ int CollisionHook::VPhysics_ShouldCollide( IPhysicsObject *pObj1, IPhysicsObject
cell_t ent1 = gamehelpers->EntityToBCompatRef( pEnt1 );
cell_t ent2 = gamehelpers->EntityToBCompatRef( pEnt2 );
// todo: do we want to fill result with with the game's result? perhaps the forward path is more performant...
cell_t result = 0;
g_pCollisionFwd->PushCell( ent1 );
g_pCollisionFwd->PushCell( ent2 );
@ -177,5 +194,6 @@ int CollisionHook::VPhysics_ShouldCollide( IPhysicsObject *pObj1, IPhysicsObject
RETURN_META_VALUE( MRES_SUPERCEDE, result == 1 );
}
// otherwise, game decides
RETURN_META_VALUE( MRES_IGNORED, 0 );
}

1
extension.h
View File

@ -91,6 +91,7 @@ public: // hooks
};
// adapted from util_shared.h
inline const CBaseEntity *UTIL_EntityFromEntityHandle( const IHandleEntity *pConstHandleEntity )
{
IHandleEntity *pHandleEntity = const_cast<IHandleEntity *>( pConstHandleEntity );