private float getFixedVsVelocityFactor(Vehicle veh, float speedCoeff)
{
// If the car isn't moving, default to looking forwards
if (veh.Velocity.Magnitude() < nearlySttopedSpeed)
{
return(0f);
}
else
{
// for bikes, always look at velocity
if (isCycleOrByke)
{
return(1f);
}
// if veh is in air, look at is velocity
if (veh.IsInAir || veh.CurrentGear == 0)
{
return(1f);
}
else // if is on the ground. fit camera (mostly) behind vehicle (for better drift control)
{
// Different factors for low/high speed
return(Mathr.Lerp(velocityInfluenceLowSpeed, velocityInfluence, Mathr.Clamp(speedCoeff / lowSpeedLimit, 0f, 1f)));
}
}
}
private float computeLookFrontOffset(Vehicle veh, float speedCoeff, float smoothIsInAir)
{
var speed = speedCoeff;
var factor = Mathr.InverseLerp(lookLowSpeedStart, lookLowSpeedEnd, speedCoeff);
var res = Mathr.Lerp(lookFrontOffsetLowSpeed, lookFrontOffset, factor);
// No offset while in air
res = Mathr.Lerp(res, 0f, this.smoothIsInAir);
return(res);
}
private void processCameraCommon(Ped player, Vehicle veh)
{
smoothIsInAir = Mathr.Lerp(smoothIsInAir, veh.IsInAir ? 1f : 0f, 1.3f * getDeltaTime());
smoothIsRearGear = Mathr.Lerp(smoothIsRearGear, veh.CurrentGear == 0 ? 1f : 0f, 1.3f * getDeltaTime());
speedCoeff = Mathr.Max(veh.Speed, veh.Velocity.Magnitude() / 22f);
pointAt = veh.Position + fullHeightOffset + (veh.ForwardVector * computeLookFrontOffset(veh, speedCoeff, smoothIsInAir));
finalDummyOffset = Mathr.Lerp(vehDummyOffset, vehDummyOffsetHighSpeed, speedCoeff / (maxHighSpeed * 1.6f));
// no offset if car is in the air
finalDummyOffset = Mathr.Lerp(finalDummyOffset, 0f, smoothIsInAir);
if (veh.TowedVehicle != null)
{
towedVehicleLongitude = veh.TowedVehicle.Model.GetDimensions().Y;
}
else
{
towedVehicleLongitude = 0f;
}
fullLongitudeOffset = (distanceOffset + currentVehicleLongitude / 2f) /* + vehDummyOffset*/ + towedVehicleLongitude;
currentDistanceIncrement = 0f;
if (increaseDistanceAtHighSpeed)
{
var factor = veh.Speed / maxHighSpeed;
currentDistanceIncrement = Mathr.Lerp(0f, maxHighSpeedDistanceIncrement, Easing.EaseOut(factor, useEasingForCamDistance ? EasingType.Cubic : EasingType.Linear));
}
if (accelerationAffectsCamDistance)
{
var factor = getVehicleAcceleration(veh) / (maxHighSpeed * 10f);
currentDistanceIncrement += Mathr.Lerp(0f, accelerationCamDistanceMultiplier, Easing.EaseOut(factor, useEasingForCamDistance ? EasingType.Quadratic : EasingType.Linear));
}
}
private Transform UpdateCameraRear(Ped player, Vehicle veh)
{
// smooth out current rotation and position
currentRotation = Mathr.QuaternionNLerp(currentRotation, rearCamCurrentTransform.quaternion, (responsivenessMultiplier * generalMovementSpeed) * getDeltaTime());
currentPos = Vector3.Lerp(currentPos, rearCamCurrentTransform.position, Mathr.Clamp01((responsivenessMultiplier * generalMovementSpeed) * getDeltaTime()));
Quaternion look;
var wantedPos = veh.Position + (veh.ForwardVector * finalDummyOffset);
// If veh has towed vehicle, increase camera distance by towed vehicle longitude
// should camera be attached to vehicle's back or back his velocity
var fixedVsVelocity = getFixedVsVelocityFactor(veh, speedCoeff);
// Compute camera position rear the vechicle
var wantedPosFixed = wantedPos - Vector3.Transform(Extensions.RelativeFront, veh.Quaternion) * fullLongitudeOffset;
// smooth out velocity
smoothVelocity = Mathr.Vector3SmoothDamp(smoothVelocity, Vector3.Normalize(veh.Velocity), ref smoothVelocitySmDamp, generalMovementSpeed, 9999999f, responsivenessMultiplier * getDeltaTime());
// Compute camera postition rear the direction of the vehcle
if (speedCoeff >= stoppedSpeed)
{
wantedPosVelocity = wantedPos + Vector3.Transform(Extensions.RelativeBottom, Mathr.QuaternionLookRotation(smoothVelocity)) * fullLongitudeOffset;
}
// Smooth factor between two above cam positions
smoothFixedVsVelocity = Mathr.Lerp(smoothFixedVsVelocity, fixedVsVelocity, (fixedVsVelocitySpeed) * getDeltaTime());
if (!isCycleOrByke)
{
tempSmoothVsVl = Mathr.Lerp(tempSmoothVsVl, Mathr.Clamp(speedCoeff / 2.3f, 0.025f, 1f), (fixedVsVelocitySpeed / 20f));
smoothFixedVsVelocity = Mathr.Lerp(0f, smoothFixedVsVelocity, tempSmoothVsVl);
}
wantedPos = Vector3.Lerp(wantedPosFixed, wantedPosVelocity, Mathr.Clamp01(smoothFixedVsVelocity));
//currentPos = Vector3.Lerp(currentPos, wantedPos, Mathr.Clamp01((responsivenessMultiplier * cameraStickiness) * getDeltaTime()));
currentPos = Vector3.Lerp(currentPos, wantedPos, Mathr.Clamp01((responsivenessMultiplier * cameraStickiness) * getDeltaTime()));
//rearCamCurrentTransform.position = currentPos;
mainCamera.PointAt(pointAt);
look = Extensions.Euler(mainCamera.Rotation);
// Rotate the camera towards the velocity vector.
var finalCamRotationSpeed = Mathr.Lerp(cameraRotationSpeedLowSpeed, cameraRotationSpeed, ((speedCoeff / lowSpeedLimit) * 1.32f) * getDeltaTime() * 51f);
look = Mathr.QuaternionNLerp(currentRotation, look, (1.8f * finalCamRotationSpeed) * getDeltaTime());
//// Auto align over time
//if (alignmentSpeed > 0.001f)
//{
// var wantedRot = veh.Rotation;
// //wantedRot.y = 0f;
// //look = Mathr.QuaternionNLerp(look, Quaternion.Euler(wantedRot), (alignmentSpeed * getDeltaTime()) * (1 - smoothIsInAir));
// Transform alignTr = new Transform(currentPos + fullHeightOffset, Quaternion.Identity);
// alignTr.PointAt(pointAt);
// alignTr.quaternion = Quaternion.Lerp(alignTr.quaternion, Quaternion.Euler(wantedRot), alignmentSpeed * getDeltaTime() * (1 - smoothIsInAir));
// currentPos = veh.Position + fullHeightOffset + (alignTr.quaternion * Vector3.RelativeBack * (fullLongitudeOffset + currentDistanceIncrement));
//}
// Fix stuttering (mantain camera distance fixed in local space)
Transform fixedDistanceTr = new Transform(currentPos + fullHeightOffset + (Extensions.WorldUp * extraCamHeight), Quaternion.Identity);
fixedDistanceTr.PointAt(pointAt);
Quaternion rotInitial = fixedDistanceTr.quaternion;
// Auto alignment (WIP)
//Vector3 rotBehindVector = veh.Position + fullHeightOffset - (veh.Quaternion * Vector3.RelativeFront * (fullLongitudeOffset + currentDistanceIncrement));
//rotBehindVector.Z = fixedDistanceTr.position.Z;
//Quaternion rotBehind = Mathr.LookAt(rotBehindVector, pointAt);
//Quaternion finalRot = Quaternion.Lerp(rotInitial, rotBehind, alignmentSpeed * (1 - smoothIsInAir) * (1 - smoothIsRearGear));
//fixedDistanceTr.position = veh.Position + fullHeightOffset + (finalRot * Vector3.RelativeBack * (fullLongitudeOffset + currentDistanceIncrement));
// End Autoalignment
fixedDistanceTr.position = veh.Position + fullHeightOffset + (Extensions.WorldUp * extraCamHeight) + (Vector3.Transform(Extensions.RelativeBack, rotInitial) * (fullLongitudeOffset + currentDistanceIncrement));
//fixedDistanceTr.position = fixedDistanceTr.position + fullHeightOffset;
var transform = new Transform();
transform.position = fixedDistanceTr.position;
//transform.position = currentPos + fullHeightOffset;
transform.rotation = look.ToEulerAngles();
transform.quaternion = look;
rearCamCurrentTransform = transform;
return(transform);
}