You set pEntity equal to null, then two lines later try to access it.
Thats your crash, a null pointer exception. Debugging this really would
have pointed you to that! :)
Andrew
>
> Message: 6
> Date: Fri, 19 Dec 2008 20:28:29 +0100
> From: Yorg Kuijs <yorg.ku...@home.nl>
> Subject: Re: [hlcoders] VelocityPunch and... what else?
> To: Discussion of Half-Life Programming
> <hlcoders@list.valvesoftware.com>
> Message-ID: <494bf5dd.2060...@home.nl>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> A friend helped me out and pointed me too something usefull, namely a
> entity for explosion that specifically has the code for pushing players,
> but I haven't got it too work yet, I took the parts I needed but it
> crashes on launch
>
> have been busy all day and need a fresh pair of eyes to look at it,
> would ask the other guy but he's offline now
> anyway here's the code:
>
> if( tr.fraction == 1.0 || !(tr.surface.flags & SURF_SKY) ) // this
> makes grenade explode on contact
> {
> //WindDetonate1();
> SailboatEffects(); //smoke cloud on ground touch
> CBaseEntity *pEntity = NULL;
> Vector vecSpot, vecOrigin;
>
> if ( pEntity->GetMoveType() == MOVETYPE_VPHYSICS ||
> (pEntity->VPhysicsGetObject() /*&& !pEntity->IsPlayer()*/) ) // Only
> push things if they're physics items
> {
> vecOrigin = GetAbsOrigin();
>
> vecSpot = pEntity->BodyTarget( vecOrigin );
> // Squash this down to a circle
> vecOrigin[2] = vecSpot[2];
>
> if ( pEntity->IsPlayer() )
> {
> Vector vecPushDir = ( pEntity->BodyTarget(
> GetAbsOrigin(), false ) - GetAbsOrigin() );
> VectorNormalize( vecPushDir );
>
> Vector vecPush = (vecPushDir * 100);
>
> if ( pEntity->GetFlags() & FL_BASEVELOCITY )
> {
> vecPush = vecPush + pEntity->GetBaseVelocity();
> }
> //if ( vecPush.z > 0 && (pEntity->GetFlags() &
> FL_ONGROUND) )
> //{
> // pEntity->SetGroundEntity( NULL );
> // Vector origin = pEntity->GetAbsOrigin();
> // origin.z += 1.0f;
> // pEntity->SetAbsOrigin( origin );
> //}
>
> pEntity->SetBaseVelocity( vecPush ); // is this the
> actual push?
> pEntity->AddFlag( FL_BASEVELOCITY );
> }
> }
>
> //Explode( &tr, DMG_BLAST ); // old explosion
> }
>
>
>
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> End of hlcoders Digest, Vol 10, Issue 25
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