100 lines
2.2 KiB
GDScript3
100 lines
2.2 KiB
GDScript3
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extends Node
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class_name ReedCameraAnchorController
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const _CONSTANTS = preload("res://addons/reedcamera/_data/CameraSystemConst.gd")
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## =========================
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## Private
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## =========================
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var _anchors: Array[CameraAnchor] = []
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var _current_anchor: CameraAnchor
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var _current_position := Vector2.ZERO
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var _tween: Tween
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## =========================
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## Config
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## =========================
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@export var enabled := true
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@export var move_duration := 0.4
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@export var ease_type := Tween.EASE_OUT
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@export var trans_type := Tween.TRANS_CUBIC
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## =========================
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## Runtime State
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## =========================
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#var _current_position: Vector2
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var _target_position: Vector2
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#var _tween: Tween
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var _has_target := false
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## =========================
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## Lifecycle
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## =========================
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func _ready() -> void:
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var sys := Engine.get_singleton(_CONSTANTS.CAMERA_SYSTEM_NAME)
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if not sys:
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return
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_anchors = sys.get_all_anchors()
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sys.anchor_registered.connect(_on_anchor_added)
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sys.anchor_unregistered.connect(_on_anchor_removed)
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_evaluate()
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func _on_anchor_added(anchor: CameraAnchor) -> void:
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_anchors.append(anchor)
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_evaluate()
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func _on_anchor_removed(anchor: CameraAnchor) -> void:
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_anchors.erase(anchor)
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if _current_anchor == anchor:
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_current_anchor = null
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_evaluate()
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func _evaluate() -> void:
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var winner := _pick_best_anchor()
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if winner == _current_anchor:
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return
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_switch_to(winner)
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func _pick_best_anchor() -> CameraAnchor:
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var best: CameraAnchor
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var best_p := -INF
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for a in _anchors:
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if not a.enabled:
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continue
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if a.priority > best_p:
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best = a
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best_p = a.priority
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return best
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func _switch_to(anchor: CameraAnchor) -> void:
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if not anchor:
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return
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_current_anchor = anchor
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var target := anchor.global_position
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if _tween and _tween.is_running():
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_tween.kill()
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if not anchor.use_blend or anchor.blend_time <= 0.0:
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_current_position = target
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return
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_tween = get_tree().create_tween()
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_tween.set_trans(Tween.TRANS_CUBIC)
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_tween.set_ease(Tween.EASE_OUT)
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_tween.tween_property(self, "_current_position", target, anchor.blend_time)
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## =========================
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## CameraPointer Interface
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## =========================
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func get_base_position() -> Vector2:
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return _current_position
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