98 lines
2.5 KiB
GDScript
98 lines
2.5 KiB
GDScript
extends Interactable
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class_name Pickupable
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@export var springStrength: float = 150.0
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@export var springDamping: float = 50.0
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@export var rotateStrength: float = 5.0
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@export var rotateDamping: float = 5.0
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@export var throwForce: float = 10.0
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@export var maxDistance: float = 4.0
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@export var body: RigidBody3D
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@export var snapAnchor: Marker3D
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@export_range(0.01, 1000.0, 0.01) var bodyMass: float = 1.0
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var dragging: bool = false
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var rotating: bool = false
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var playerRef
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var grabLocal: Vector3
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var holdDistance: float
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var rotationOffset: Basis
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func _ready():
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if body:
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body.mass = bodyMass
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func beginInteract(player, hitPosition: Vector3):
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playerRef = player
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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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holdDistance = holdPoint.global_position.distance_to(hitPosition)
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rotationOffset = holdPoint.global_basis.inverse() * body.global_basis
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func updateInteract(player):
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if !dragging:
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return
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# Toggle rotation mode
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if Input.is_action_just_pressed("rotate"):
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rotating = true
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playerRef.setMouseFactors(0.0, 0.0)
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if Input.is_action_just_released("rotate"):
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rotating = false
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playerRef.setMouseFactors(1.0, 1.0)
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var holdPoint = player.hand
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# Release if too far away
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if body.global_position.distance_to(player.global_position) > maxDistance:
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endInteract(player)
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return
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# Target position
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var targetPosition = holdPoint.global_position + (-holdPoint.global_basis.z * holdDistance)
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var offset = targetPosition - body.global_position
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# Linear spring
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body.apply_force(offset * springStrength - body.linear_velocity * springDamping, body.to_global(grabLocal) - body.global_position)
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if rotating:
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var delta = player.interactionMouseDelta
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rotationOffset = Basis(Vector3.UP, deg_to_rad(-delta.x * 0.35)) * rotationOffset
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rotationOffset = Basis(Vector3.RIGHT, deg_to_rad(delta.y * 0.35)) * rotationOffset
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# Angular spring
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var targetBasis = holdPoint.global_basis * rotationOffset
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var currentQuat = body.global_basis.get_rotation_quaternion()
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var targetQuat = targetBasis.get_rotation_quaternion()
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var diff = targetQuat * currentQuat.inverse()
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if diff.dot(Quaternion.IDENTITY) < 0:
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diff = -diff
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var angle = diff.get_angle()
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if angle > 0.001:
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body.apply_torque(diff.get_axis() * angle * rotateStrength - body.angular_velocity * rotateDamping)
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func endInteract(player):
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dragging = false
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rotating = false
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player.setMouseFactors(1.0, 1.0)
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playerRef = null
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func throw():
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if !dragging:
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return
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var direction = -playerRef.camera.global_basis.z
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body.apply_impulse(direction * throwForce)
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