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- Added an enum for the values a Trace callback function can return.
- Added a userdata parameter to pass to the Trace callback function. SVN r4200 (trunk)
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3 changed files with 55 additions and 28 deletions
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@ -3423,38 +3423,36 @@ fixed_t P_AimLineAttack (AActor *t1, angle_t angle, fixed_t distance, AActor **p
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//
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//==========================================================================
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static bool CheckForGhost (FTraceResults &res)
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static ETraceStatus CheckForGhost (FTraceResults &res, void *userdata)
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{
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if (res.HitType != TRACE_HitActor)
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{
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return false;
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return TRACE_Stop;
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}
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// check for physical attacks on a ghost
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if (res.Actor->flags3 & MF3_GHOST || res.Actor->flags4 & MF4_SPECTRAL)
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{
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res.HitType = TRACE_HitNone;
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return true;
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return TRACE_Skip;
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}
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return false;
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return TRACE_Stop;
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}
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static bool CheckForSpectral (FTraceResults &res)
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static ETraceStatus CheckForSpectral (FTraceResults &res, void *userdata)
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{
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if (res.HitType != TRACE_HitActor)
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{
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return false;
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return TRACE_Stop;
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}
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// check for physical attacks on spectrals
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if (res.Actor->flags4 & MF4_SPECTRAL)
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{
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res.HitType = TRACE_HitNone;
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return true;
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return TRACE_Skip;
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}
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return false;
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return TRACE_Stop;
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}
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//==========================================================================
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@ -3886,17 +3884,17 @@ struct SRailHit
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};
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static TArray<SRailHit> RailHits (16);
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static bool ProcessRailHit (FTraceResults &res)
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static ETraceStatus ProcessRailHit (FTraceResults &res, void *userdata)
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{
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if (res.HitType != TRACE_HitActor)
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{
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return false;
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return TRACE_Stop;
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}
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// Invulnerable things completely block the shot
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if (res.Actor->flags2 & MF2_INVULNERABLE)
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{
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return false;
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return TRACE_Stop;
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}
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// Save this thing for damaging later, and continue the trace
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@ -3905,7 +3903,7 @@ static bool ProcessRailHit (FTraceResults &res)
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newhit.Distance = res.Distance - 10*FRACUNIT; // put blood in front
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RailHits.Push (newhit);
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return true;
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return TRACE_Continue;
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}
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//==========================================================================
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@ -3914,17 +3912,17 @@ static bool ProcessRailHit (FTraceResults &res)
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//
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//==========================================================================
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static bool ProcessNoPierceRailHit (FTraceResults &res)
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static ETraceStatus ProcessNoPierceRailHit (FTraceResults &res, void *userdata)
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{
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if (res.HitType != TRACE_HitActor)
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{
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return false;
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return TRACE_Stop;
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}
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// Invulnerable things completely block the shot
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if (res.Actor->flags2 & MF2_INVULNERABLE)
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{
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return false;
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return TRACE_Stop;
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}
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// Only process the first hit
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@ -3933,7 +3931,7 @@ static bool ProcessNoPierceRailHit (FTraceResults &res)
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newhit.Distance = res.Distance - 10*FRACUNIT; // put blood in front
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RailHits.Push (newhit);
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return false;
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return TRACE_Stop;
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}
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//==========================================================================
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@ -48,7 +48,8 @@ struct FTraceInfo
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sector_t *CurSector;
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fixed_t MaxDist;
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fixed_t EnterDist;
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bool (*TraceCallback)(FTraceResults &res);
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ETraceStatus (*TraceCallback)(FTraceResults &res, void *data);
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void *TraceCallbackData;
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DWORD TraceFlags;
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int inshootthrough;
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@ -71,7 +72,7 @@ bool Trace (fixed_t x, fixed_t y, fixed_t z, sector_t *sector,
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fixed_t vx, fixed_t vy, fixed_t vz, fixed_t maxDist,
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DWORD actorMask, DWORD wallMask, AActor *ignore,
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FTraceResults &res,
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DWORD flags, bool (*callback)(FTraceResults &res))
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DWORD flags, ETraceStatus (*callback)(FTraceResults &res, void *), void *callbackdata)
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{
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int ptflags;
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FTraceInfo inf;
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@ -91,6 +92,7 @@ bool Trace (fixed_t x, fixed_t y, fixed_t z, sector_t *sector,
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inf.MaxDist = maxDist;
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inf.EnterDist = 0;
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inf.TraceCallback = callback;
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inf.TraceCallbackData = callbackdata;
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inf.TraceFlags = flags;
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inf.Results = &res;
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inf.inshootthrough = true;
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@ -506,7 +508,13 @@ cont:
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if (TraceCallback != NULL)
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{
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if (!TraceCallback (*Results)) return false;
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switch (TraceCallback(*Results, TraceCallbackData))
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{
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case TRACE_Stop: return false;
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case TRACE_Abort: Results->HitType = TRACE_HitNone; return false;
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case TRACE_Skip: Results->HitType = TRACE_HitNone; break;
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default: break;
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}
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}
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else
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{
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@ -515,8 +523,7 @@ cont:
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}
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// Encountered an actor
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if (!(in->d.thing->flags & ActorMask) ||
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in->d.thing == IgnoreThis)
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if (!(in->d.thing->flags & ActorMask) || in->d.thing == IgnoreThis)
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{
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continue;
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}
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@ -583,13 +590,19 @@ cont:
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// the trace hit a 3D-floor before the thing.
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// Calculate an intersection and abort.
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Results->Sector = §ors[CurSector->sectornum];
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if (!CheckSectorPlane(CurSector, Results->HitType==TRACE_HitFloor))
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if (!CheckSectorPlane(CurSector, Results->HitType == TRACE_HitFloor))
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{
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Results->HitType=TRACE_HitNone;
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Results->HitType = TRACE_HitNone;
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}
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if (TraceCallback != NULL)
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{
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return TraceCallback (*Results);
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switch (TraceCallback(*Results, TraceCallbackData))
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{
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case TRACE_Continue: return true;
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case TRACE_Stop: return false;
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case TRACE_Abort: Results->HitType = TRACE_HitNone; return false;
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case TRACE_Skip: Results->HitType = TRACE_HitNone; return true;
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}
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}
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else
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{
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@ -608,7 +621,13 @@ cont1:
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if (TraceCallback != NULL)
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{
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if (!TraceCallback (*Results)) return false;
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switch (TraceCallback(*Results, TraceCallbackData))
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{
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case TRACE_Stop: return false;
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case TRACE_Abort: Results->HitType = TRACE_HitNone; return false;
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case TRACE_Skip: Results->HitType = TRACE_HitNone; break;
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default: break;
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}
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}
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else
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{
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@ -85,10 +85,20 @@ enum
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TRACE_Impact = 4, // Trigger SPAC_IMPACT lines
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};
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// return values from callback
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enum ETraceStatus
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{
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TRACE_Stop, // stop the trace, returning this hit
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TRACE_Continue, // continue the trace, returning this hit if there are none further along
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TRACE_Skip, // continue the trace; do not return this hit
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TRACE_Abort, // stop the trace, returning no hits
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};
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bool Trace (fixed_t x, fixed_t y, fixed_t z, sector_t *sector,
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fixed_t vx, fixed_t vy, fixed_t vz, fixed_t maxDist,
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DWORD ActorMask, DWORD WallMask, AActor *ignore,
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FTraceResults &res,
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DWORD traceFlags=0, bool (*callback)(FTraceResults &res)=NULL);
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DWORD traceFlags=0,
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ETraceStatus (*callback)(FTraceResults &res, void *)=NULL, void *callbackdata=NULL);
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#endif //__P_TRACE_H__
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