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Fix retrace OwnerSafe bug and restore debug trace colors

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Save and restore OwnerSafe state during retrace to prevent the bullet
from hitting the owner's actors when replaying a previous trace where
OwnerSafe was true. Also fix debug DrawDebugLine in Trace.cpp to use
proper velocity-based colors instead of hardcoded values.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
j.foucher 2026-03-13 19:32:43 +01:00
parent 9b9c5254db
commit 669b65a30f
7 changed files with 9 additions and 2 deletions
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Unreal/Content/PACKS/Blueprints/EasyBallistics/Player/player.uasset
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Unreal/Content/PACKS/Blueprints/EasyBallistics/bullet/bullet_tracer.uasset
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Unreal/Plugins/EasyBallistics/Binaries/Win64/UnrealEditor-EasyBallistics.dll
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Unreal/Plugins/EasyBallistics/Binaries/Win64/UnrealEditor-EasyBallistics.pdb
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3
Unreal/Plugins/EasyBallistics/Source/EasyBallistics/Private/EBBullet.cpp
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@ -64,6 +64,8 @@ void AEBBullet::Step(float DeltaTime) {
if (Retrace && CanRetrace) {
//time travel
bool SavedOwnerSafe = OwnerSafe;
OwnerSafe = LastTraceOwnerSafe;
float remainingTime = LastTraceDelta;
int remainingSteps = MaxTracesPerStep;
FVector PreviousVelocity = LastTracePrevVelocity;
@ -87,6 +89,7 @@ void AEBBullet::Step(float DeltaTime) {
remainingSteps -= 1;
if (remainingTime > 0.0f) { sendUpdate = true; };
} while (remainingTime > 0.0f && remainingSteps > 0);
OwnerSafe = SavedOwnerSafe;
}
CanRetrace = false;

7
Unreal/Plugins/EasyBallistics/Source/EasyBallistics/Private/Trace.cpp
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@ -95,7 +95,8 @@ float AEBBullet::Trace(FVector start, FVector PreviousVelocity, float delta, TEn
#ifdef WITH_EDITOR
if (DebugEnabled) {
DrawDebugLine(GetWorld(), start, HitResult.Location, FColor::Blue, false, DebugTrailTime, 0, 3.0f);
FColor DebugColor = FColor::MakeRedToGreenColorFromScalar(Velocity.Size() / MuzzleVelocityMax);
DrawDebugLine(GetWorld(), start, HitResult.Location, DebugColor, false, DebugTrailTime, 0, DebugTrailWidth);
};
#endif
@ -178,6 +179,7 @@ float AEBBullet::Trace(FVector start, FVector PreviousVelocity, float delta, TEn
LastTraceDelta = delta;
LastTracePrevVelocity = PreviousVelocity;
LastTraceVelocity = Velocity;
LastTraceOwnerSafe = OwnerSafe;
}
SetActorLocation(start + TraceDistance);
@ -187,7 +189,8 @@ float AEBBullet::Trace(FVector start, FVector PreviousVelocity, float delta, TEn
#ifdef WITH_EDITOR
if (DebugEnabled) {
DrawDebugLine(GetWorld(), start, start + TraceDistance, FColor::Magenta, false, DebugTrailTime, 0, 3.0f);
FLinearColor Color = GetDebugColor(Velocity.Size() / ((MuzzleVelocityMin + MuzzleVelocityMax)*0.5f));
DrawDebugLine(GetWorld(), start, start + TraceDistance, Color.ToFColor(true), false, DebugTrailTime, 0, 0);
}
}
#endif

1
Unreal/Plugins/EasyBallistics/Source/EasyBallistics/Public/EBBullet.h
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@ -208,6 +208,7 @@ private:
float LastTraceDelta;
FVector LastTraceVelocity;
FVector LastTracePrevVelocity;
bool LastTraceOwnerSafe = false;
bool IsRecycled;