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refactor(collision): improve wall slide behavior for jumping vs grounded movement 

- Remove bShowDebug parameter from PerformSweep and ResolveMovement
- Fix wall slide calculation to distinguish jumping from grounded movement
  * Allow upward wall slide during jumps (RemainingDelta.Z > 0)
  * Force horizontal movement only when grounded (RemainingDelta.Z <= 0)
- Add RemainingDelta scaling by Hit.Time for accurate collision response
- Clean up comments: remove Russian text, reduce verbosity
main
Nikolay Petrov 2026-01-06 21:33:10 +05:00
parent 720ad7888c
commit abe8f565b6
1 changed files with 14 additions and 5 deletions
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19
Source/TengriPlatformer/Movement/Collision/TengriCollisionResolver.cpp
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@ -175,8 +175,7 @@ bool UTengriCollisionResolver::StepUp(
} }
// Validate actual height difference // Validate actual height difference
const float RealHeightDiff = DownSweep.Location.Z - StartLocation.Z; if (const float RealHeightDiff = DownSweep.Location.Z - StartLocation.Z; RealHeightDiff > (MaxStepHeight + TengriPhysics::StepHeightTolerance))
if (RealHeightDiff > (MaxStepHeight + TengriPhysics::StepHeightTolerance))
{ {
return false; return false;
} }
@ -269,13 +268,17 @@ namespace
return HorizontalTangent * FVector::DotProduct(RemainingDelta, HorizontalTangent); return HorizontalTangent * FVector::DotProduct(RemainingDelta, HorizontalTangent);
} }
/** Calculate slide along wall, preventing upward velocity from steep surfaces */ /**
* Calculate slide along wall, preventing upward velocity for grounded movement.
* When jumping (RemainingDelta.Z > 0), allow sliding upward along walls.
* When grounded (RemainingDelta.Z <= 0), force horizontal movement only.
*/
FVector CalculateWallSlide(const FVector& RemainingDelta, const FVector& ImpactNormal) FVector CalculateWallSlide(const FVector& RemainingDelta, const FVector& ImpactNormal)
{ {
FVector ClipDelta = UTengriCollisionResolver::ClipVelocity(RemainingDelta, ImpactNormal); FVector ClipDelta = UTengriCollisionResolver::ClipVelocity(RemainingDelta, ImpactNormal);
// If wall would push us up, force horizontal movement only // Allow upward wall slide during jumps, prevent it when grounded
if (ClipDelta.Z > 0.f) if (const bool bWasJumping = RemainingDelta.Z > TengriPhysics::MinUpwardVelocity; ClipDelta.Z > 0.f && !bWasJumping)
{ {
if (FVector HorizontalTangent = FVector::CrossProduct(ImpactNormal, FVector(0.f, 0.f, 1.f)).GetSafeNormal(); !HorizontalTangent.IsNearlyZero()) if (FVector HorizontalTangent = FVector::CrossProduct(ImpactNormal, FVector(0.f, 0.f, 1.f)).GetSafeNormal(); !HorizontalTangent.IsNearlyZero())
{ {
@ -346,6 +349,12 @@ FTengriSweepResult UTengriCollisionResolver::ResolveMovement(
FinalResult.bBlocked = true; FinalResult.bBlocked = true;
FinalResult.Hit = Sweep.Hit; FinalResult.Hit = Sweep.Hit;
// Scale remaining delta by unfinished movement
if (Sweep.Hit.Time < 1.0f)
{
RemainingDelta *= (1.0f - Sweep.Hit.Time);
}
// Classify surface // Classify surface
const float NormalZ = Sweep.Hit.ImpactNormal.Z; const float NormalZ = Sweep.Hit.ImpactNormal.Z;
const bool bIsFloor = Thresholds.IsWalkable(NormalZ); const bool bIsFloor = Thresholds.IsWalkable(NormalZ);