100 lines
3.8 KiB
C++
100 lines
3.8 KiB
C++
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//
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// camera/helpers/camLookAheadHelper.cpp
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//
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// Copyright (C) 1999-2014 Rockstar Games. All Rights Reserved.
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//
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#include "camera/helpers/LookAheadHelper.h"
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#include "fwsys/timer.h"
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#include "camera/system/CameraMetadata.h"
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#include "grcore/debugdraw.h"
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#include "scene/Physical.h"
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#include "vehicles/vehicle.h"
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CAMERA_OPTIMISATIONS()
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INSTANTIATE_RTTI_CLASS(camLookAheadHelper,0x74ab6150)
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#if __BANK
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bool camLookAheadHelper::ms_DebugEnableDebugDisplay = false;
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#endif // __BANK
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camLookAheadHelper::camLookAheadHelper(const camBaseObjectMetadata& metadata)
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: camBaseObject(metadata)
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, m_Metadata(static_cast<const camLookAheadHelperMetadata&>(metadata))
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{
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}
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void camLookAheadHelper::UpdateConsideringLookAtTarget(const CPhysical* lookAtTarget, bool isFirstUpdate, Vector3& lookAheadPositionOffset)
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{
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lookAheadPositionOffset.Zero();
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if (!lookAtTarget)
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{
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return;
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}
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const float targetRadius = lookAtTarget->GetBaseModelInfo() ? lookAtTarget->GetBaseModelInfo()->GetBoundingSphereRadius() : lookAtTarget->GetBoundRadius();
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if (IsNearZero(targetRadius))
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{
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return;
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}
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const Vector3& lookAtTargetVelocity = lookAtTarget->GetVelocity();
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Vector3 lookAtTargetFront = VEC3V_TO_VECTOR3(lookAtTarget->GetTransform().GetForward());
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const float lookAtTargetSpeedToConsider = lookAtTargetVelocity.Dot(lookAtTargetFront);
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const CVehicle* lookAtVehicle = lookAtTarget->GetIsTypeVehicle() ? static_cast<const CVehicle*>(lookAtTarget) : NULL;
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//NOTE: We are rolling submarines into the 'boats' category here.
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const bool isLookAtTargetAnAircraftOrBoat = lookAtVehicle && (lookAtVehicle->GetIsAircraft() || lookAtVehicle->InheritsFromBoat() || lookAtVehicle->InheritsFromSubmarine());
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const float offsetMultiplierAtMinSpeed = isLookAtTargetAnAircraftOrBoat ? m_Metadata.m_AircraftBoatOffsetMultiplierAtMinSpeed : m_Metadata.m_OffsetMultiplierAtMinSpeed;
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const float offsetMultiplierAtMaxForwardSpeed = isLookAtTargetAnAircraftOrBoat ? m_Metadata.m_AircraftBoatOffsetMultiplierAtMaxForwardSpeed : m_Metadata.m_OffsetMultiplierAtMaxForwardSpeed;
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const float offsetMultiplierAtMaxReverseSpeed = isLookAtTargetAnAircraftOrBoat ? m_Metadata.m_AircraftBoatOffsetMultiplierAtMaxReverseSpeed : m_Metadata.m_OffsetMultiplierAtMaxReverseSpeed;
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float desiredLookAheadMultiplier = 0.0f;
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if (m_Metadata.m_ShouldApplyLookAheadInReverse && lookAtTargetSpeedToConsider < -m_Metadata.m_MinSpeed)
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{
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desiredLookAheadMultiplier = RampValueSafe(lookAtTargetSpeedToConsider,
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m_Metadata.m_MaxReverseSpeed, -m_Metadata.m_MinSpeed, offsetMultiplierAtMaxReverseSpeed, offsetMultiplierAtMinSpeed);
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}
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else
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{
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desiredLookAheadMultiplier = RampValueSafe(lookAtTargetSpeedToConsider,
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m_Metadata.m_MinSpeed, m_Metadata.m_MaxForwardSpeed, offsetMultiplierAtMinSpeed, offsetMultiplierAtMaxForwardSpeed);
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}
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const float dampedLookAheadMultiplier = m_Spring.Update(desiredLookAheadMultiplier, isFirstUpdate ? 0.0f : m_Metadata.m_SpringConstant, m_Metadata.m_SpringDampingRatio, true);
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lookAheadPositionOffset = (lookAtTargetFront * targetRadius * dampedLookAheadMultiplier);
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#if __BANK
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if (ms_DebugEnableDebugDisplay)
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{
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const Vector3 lookAtTargetPosition = VEC3V_TO_VECTOR3(lookAtTarget->GetTransform().GetPosition());
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const Vector3 desiredOffset = (lookAtTargetFront * targetRadius * desiredLookAheadMultiplier);
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const Vector3 desiredPositionOffset = lookAtTargetPosition + desiredOffset;
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grcDebugDraw::Sphere(desiredPositionOffset, targetRadius / 2.0f, Color_cyan);
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const Vector3 finalPositionOffset = lookAtTargetPosition + lookAheadPositionOffset;
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grcDebugDraw::Sphere(finalPositionOffset, targetRadius / 2.0f, Color_magenta);
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}
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#endif // __BANK
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}
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#if __BANK
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void camLookAheadHelper::AddWidgets(bkBank &bank)
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{
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bank.PushGroup("Look Ahead helper");
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{
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bank.AddToggle("Render debug display", &ms_DebugEnableDebugDisplay);
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}
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bank.PopGroup(); //Look Ahead helper
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}
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#endif // __BANK
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