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67 lines
3 KiB
GDScript3
67 lines
3 KiB
GDScript3
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extends Node
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class_name PoseWarping
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## For Predicting Stop Location
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## it uses a linear equation : d = v*t + 0.5 * a * t^2
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## v is velocity. t is time. a is acceleration
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func CalculateStopLocation(CurrentCharacterLocation:Vector3,Velocity:Vector3,deacceleration:Vector3,_delta):
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var time = CalculateStopTime(Velocity,deacceleration)
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return CurrentCharacterLocation + (Velocity * time + 0.5*deacceleration*pow(time,2))
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func CalculateStopTime(Velocity:Vector3,deacceleration:Vector3):
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var time = Velocity.length() / deacceleration.length()
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return time
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var previous_direction : float
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var orientation_direction : float
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var cleared_override : bool = true
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func orientation_warping(enabled:bool,CameraObject, Velocity:Vector3, skeleton_ref:Skeleton3D, Hip :String= "Hips", Spines :Array[String]= ["Spine","Spine1","Spine2"], Offset := 0.0, delta :float= 1.0, turn_rate :float= 10.0):
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if !enabled and !cleared_override:
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set_bone_y_rotation(skeleton_ref,Hip,0,false)
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for bone in Spines:
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set_bone_y_rotation(skeleton_ref,bone,0,false)
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cleared_override = true
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if is_equal_approx(Velocity.length(),0.0) or !enabled:
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return
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cleared_override = false
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var CameraAngle :Quaternion = Quaternion(Vector3(0,1,0),atan2(-CameraObject.transform.basis.z.z, -CameraObject.transform.basis.z.x))
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var VelocityAngle :Quaternion = Quaternion(Vector3(0,1,0),atan2(Velocity.z, Velocity.x))
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var IsMovingBackwardRelativeToCamera :bool = false if -Velocity.rotated(Vector3.UP,-CameraObject.transform.basis.get_euler().y).z >= -0.1 else true
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var IsMovingLeftRelativeToCamera :bool = false if -Velocity.rotated(Vector3.UP,-CameraObject.transform.basis.get_euler().y).x >= -0.1 else true
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var rotation_difference_camera_velocity :float = CameraAngle.angle_to(VelocityAngle)
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previous_direction = orientation_direction
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orientation_direction = rotation_difference_camera_velocity
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if IsMovingBackwardRelativeToCamera:
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# Make the legs face forward just like the forward walking
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orientation_direction *= -1
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orientation_direction = orientation_direction + PI
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# Set Left or Right
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if IsMovingLeftRelativeToCamera:
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orientation_direction *= -1
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if IsMovingBackwardRelativeToCamera:
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# since we rotated the legs to face forward, then the right and left will be reversed
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# so we need to reverse it back again after getting the right and left values
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orientation_direction *= -1
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orientation_direction = clampf(lerp_angle(previous_direction,orientation_direction,delta*turn_rate),-PI/2, PI/2)
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#Orient bones to face the forward direction
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set_bone_y_rotation(skeleton_ref,Hip,orientation_direction)
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for bone in Spines:
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set_bone_y_rotation(skeleton_ref,bone,(-orientation_direction/(Spines.size()))+Offset)
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func set_bone_y_rotation(skeleton:Skeleton3D,bone_name:String, y_rot:float, presistant:bool=true):
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var bone = skeleton.find_bone(bone_name)
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var bone_transform : Transform3D = skeleton.get_bone_global_pose_no_override(bone)
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bone_transform = bone_transform.rotated(Vector3(0,1,0), y_rot)
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skeleton.set_bone_global_pose_override(bone, bone_transform,1.0,presistant)
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