56 lines
1.7 KiB
GDScript
56 lines
1.7 KiB
GDScript
extends Interactable
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class_name SliderInteractable
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@export var body: RigidBody3D
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@export var slider_joint: SliderJoint3D
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@export var springStrength: float = 200.0
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@export var springDamping: float = 15.0
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@export var maxGrabDistance: float = 4.0
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var dragging: bool = false
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var grabLocal: Vector3
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var handOffsetLocal: Vector3
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func _ready() -> void:
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if body:
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body.mass = max(body.mass, 0.01)
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await get_tree().physics_frame
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if slider_joint:
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var orig_a = slider_joint.node_a
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var orig_b = slider_joint.node_b
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slider_joint.node_a = NodePath("")
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slider_joint.node_b = NodePath("")
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slider_joint.node_a = orig_a
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slider_joint.node_b = orig_b
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func beginInteract(player, hitPosition: Vector3) -> void:
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dragging = true
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grabLocal = body.to_local(hitPosition)
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var holdPoint = player.hand
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handOffsetLocal = holdPoint.global_basis.inverse() * (hitPosition - holdPoint.global_position)
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func updateInteract(player) -> void:
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if !dragging:
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return
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body.sleeping = false
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var worldGrab = body.to_global(grabLocal)
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if player.global_position.distance_to(worldGrab) > maxGrabDistance:
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player.stopInteraction()
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return
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var holdPoint = player.hand
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var targetGrabGlobal = holdPoint.global_position + (holdPoint.global_basis * handOffsetLocal)
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var errorVector = targetGrabGlobal - worldGrab
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var slide_axis_global = slider_joint.global_basis.x.normalized()
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var linear_error = errorVector.dot(slide_axis_global)
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var linear_velocity = body.linear_velocity.dot(slide_axis_global)
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var force_magnitude = (linear_error * springStrength) - (linear_velocity * springDamping)
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body.apply_central_force(slide_axis_global * force_magnitude)
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func endInteract(player) -> void:
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dragging = false
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