99 lines
2.8 KiB
GDScript
99 lines
2.8 KiB
GDScript
class_name Socket
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extends Node3D
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@export var snapPoint: Marker3D
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@export var snapArea: Area3D
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@export var snapDistance: float = 0.5
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@export var lockOnSnap: bool = true
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@export var hologramMaterial: Material
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var hologramInstance: MeshInstance3D
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var candidate: Pickupable = null
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var attachedObject: Pickupable = null
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func _ready() -> void:
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if snapArea:
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snapArea.body_entered.connect(onBodyEntered)
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snapArea.body_exited.connect(onBodyExited)
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hologramInstance = MeshInstance3D.new()
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hologramInstance.top_level = true
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hologramInstance.visible = false
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if hologramMaterial:
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hologramInstance.material_override = hologramMaterial
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add_child(hologramInstance)
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func canAttach(object: Pickupable) -> bool:
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if attachedObject != null:
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return false
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if object == null or object.snapAnchor == null:
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return false
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var distance := object.snapAnchor.global_position.distance_to(snapPoint.global_position)
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return distance <= snapDistance
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func attachObject(object: Pickupable) -> bool:
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if not canAttach(object):
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return false
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var targetTransform := getSnapTransform(object)
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var body := object.body
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body.linear_velocity = Vector3.ZERO
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body.angular_velocity = Vector3.ZERO
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body.global_transform = targetTransform
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if lockOnSnap:
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body.freeze = true
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attachedObject = object
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candidate = null
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object.currentSocket = self
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if hologramInstance:
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hologramInstance.visible = false
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return true
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func detachObject() -> void:
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if attachedObject == null:
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return
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var body := attachedObject.body
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if lockOnSnap:
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body.freeze = false
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attachedObject.currentSocket = null
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attachedObject = null
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func getSnapTransform(object: Pickupable) -> Transform3D:
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var objectTransform := object.body.global_transform
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var anchorTransform := object.snapAnchor.global_transform
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var anchorOffset := objectTransform.affine_inverse() * anchorTransform
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return snapPoint.global_transform * anchorOffset.affine_inverse()
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func onBodyEntered(body: Node3D):
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if attachedObject != null: return
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if body is RigidBody3D and body.get_parent() is Pickupable:
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var pickup = body.get_parent() as Pickupable
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pickup.currentSocket = self
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candidate = pickup
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if pickup.visualMeshNode and pickup.visualMeshNode.mesh:
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hologramInstance.mesh = pickup.visualMeshNode.mesh
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var targetBodyTransform = getSnapTransform(pickup)
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var meshLocalTranform = pickup.body.global_transform.affine_inverse() * pickup.visualMeshNode.global_transform
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hologramInstance.global_transform = targetBodyTransform * meshLocalTranform
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hologramInstance.visible = true
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func onBodyExited(body: Node3D):
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if body is RigidBody3D and body.get_parent() is Pickupable:
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var pickup = body.get_parent() as Pickupable
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if pickup.currentSocket == self and attachedObject != pickup:
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pickup.currentSocket = null
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if candidate == pickup:
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candidate = null
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if hologramInstance:
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hologramInstance.visible = false
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