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Add Pre/PostTeleport virtuals, for special handling of actor teleportation.

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This commit is contained in:
Marisa Kirisame 2020-09-02 11:09:29 +02:00 committed by Christoph Oelckers
parent 53199e4553
commit e0aa8db616
2 changed files with 26 additions and 0 deletions
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21
src/playsim/p_teleport.cpp
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@ -148,6 +148,19 @@ bool P_Teleport (AActor *thing, DVector3 pos, DAngle angle, int flags)
pos.Z = floorheight; pos.Z = floorheight;
} }
} }
// [MK] notify thing of incoming teleport, check for an early cancel
// if it returns false
{
int nocancel = 1;
IFVIRTUALPTR(thing, AActor, PreTeleport)
{
VMValue params[] = { thing, pos.X, pos.Y, pos.Z, angle.Degrees, flags };
VMReturn ret;
ret.IntAt(&nocancel);
VMCall(func, params, countof(params), &ret, 1);
}
if ( !nocancel ) return false;
}
if (!P_TeleportMove (thing, pos, false)) if (!P_TeleportMove (thing, pos, false))
{ {
return false; return false;
@ -213,6 +226,14 @@ bool P_Teleport (AActor *thing, DVector3 pos, DAngle angle, int flags)
// killough 10/98: kill all bobbing velocity too // killough 10/98: kill all bobbing velocity too
if (player) player->Vel.Zero(); if (player) player->Vel.Zero();
} }
// [MK] notify thing of successful teleport
{
IFVIRTUALPTR(thing, AActor, PostTeleport)
{
VMValue params[] = { thing, pos.X, pos.Y, pos.Z, angle.Degrees, flags };
VMCall(func, params, countof(params), nullptr, 1);
}
}
return true; return true;
} }

5
wadsrc/static/zscript/actors/actor.zs
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@ -588,6 +588,11 @@ class Actor : Thinker native
// called on getting a secret, return false to disable default "secret found" message/sound // called on getting a secret, return false to disable default "secret found" message/sound
virtual bool OnGiveSecret(bool printmsg, bool playsound) { return true; } virtual bool OnGiveSecret(bool printmsg, bool playsound) { return true; }
// called before and after triggering a teleporter
// return false in PreTeleport() to cancel the action early
virtual bool PreTeleport( Vector3 destpos, double destangle, int flags ) { return true; }
virtual void PostTeleport( Vector3 destpos, double destangle, int flags ) {}
native virtual bool OkayToSwitchTarget(Actor other); native virtual bool OkayToSwitchTarget(Actor other);
native static class<Actor> GetReplacement(class<Actor> cls); native static class<Actor> GetReplacement(class<Actor> cls);