266 lines
6.6 KiB
GDScript
266 lines
6.6 KiB
GDScript
#'''全局的相机管理器
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#
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#======= 外部调用函数 =======
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#
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#'''
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#@tool
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extends Node
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#
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#@onready var camera_2d: Camera2D = %Camera2D
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#@onready var camera_shake_player: CameraShakePlayer = %CameraShakePlayer
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#
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#var _cached_anchors: Array[CameraAnchor] = []
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#var _current_anchor: CameraAnchor
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#var _switch_tween: Tween
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#var _player_remote: RemoteTransform2D
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#var _base_camera_pos := Vector2.ZERO
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#
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###标记位，用来检测当前帧是否存在相机切换
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#var _switch_scheduled := false
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#var _dirty := false
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#var _screen_size : Vector2i
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#
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### 玩家关卡内静态相机
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#const CAMERA_FOLLOWER:= preload("res://camera/camera_follower.tscn")
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#
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#func _ready() -> void:
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## Setting default screensize
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#_screen_size = Vector2i(
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#ProjectSettings.get_setting("display/window/size/viewport_width"),
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#ProjectSettings.get_setting("display/window/size/viewport_height")
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#)
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#
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## For editor
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#if Engine.is_editor_hint():
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#ProjectSettings.settings_changed.connect(func():
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#_screen_size = Vector2i(
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#ProjectSettings.get_setting("display/window/size/viewport_width"),
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#ProjectSettings.get_setting("display/window/size/viewport_height")
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#)
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#)
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## For runtime
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#else:
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#get_tree().get_root().size_changed.connect(func():
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#_screen_size = get_viewport().get_visible_rect().size
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#)
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#
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#func _editor_ready() -> void:
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#ProjectSettings.settings_changed.connect(func():
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#_screen_size = Vector2i(
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#ProjectSettings.get_setting("display/window/size/viewport_width"),
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#ProjectSettings.get_setting("display/window/size/viewport_height")
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#)
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#)
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#
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#func _runtime_ready() -> void:
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#get_tree().get_root().size_changed.connect(func():
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#_screen_size = get_viewport().get_visible_rect().size
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#)
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#
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##func _process(delta):
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##if not Engine.is_editor_hint():
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##_runtime_process(delta)
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#
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#
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#func _runtime_process(delta):
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#if not camera_2d:
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#return
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#
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#var shake_offset := camera_shake_player.update(delta)
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#camera_2d.global_position = _base_camera_pos + shake_offset
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#
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#func _on_player_spawned(new_player: Player) -> void:
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#if _current_anchor and _current_anchor.follow_player:
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#_bind_camera_follow_to_player(new_player)
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#
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#func _on_player_dead() -> void:
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#return
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#
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### 绑定camera 到 player
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#func _bind_camera_follow_to_player(player: Player) -> void:
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#if _player_remote and is_instance_valid(_player_remote):
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#_player_remote.queue_free()
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#_player_remote = null
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#
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#if not is_instance_valid(player):
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#return
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#
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#var rt := RemoteTransform2D.new()
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#rt.name = "__CameraAnchorFollow"
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#rt.remote_path = camera_2d.get_path()
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#rt.update_position = true
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#rt.update_rotation = false
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#rt.update_scale = false
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#
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#player.add_child(rt)
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#_player_remote = rt
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#
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### 外部获取玩家全局相机
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#func get_cached_camera() -> Camera2D:
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#return camera_2d
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#
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### 注册一个相机锚点
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#func register_anchor(anchor: CameraAnchor) -> void:
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#if anchor in _cached_anchors:
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#return
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#_cached_anchors.append(anchor)
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#anchor.on_priority_change.connect(on_anchor_priority_changed)
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#_request_evaluate()
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#
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### 当相机锚点的权重改变时，向管理器触发事件
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#func on_anchor_priority_changed(priority:int, anchor: CameraAnchor) -> void:
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#_request_evaluate()
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#
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### 注销一个相机锚点
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#func unregister_anchor(anchor: CameraAnchor) -> void:
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#_cached_anchors.erase(anchor)
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#if _current_anchor == anchor:
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#_current_anchor = null
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#_request_evaluate()
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#
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#func _request_evaluate() -> void:
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#_dirty = true
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#if _switch_scheduled:
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#return
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#_switch_scheduled = true
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#call_deferred("_commit_camera_anchor")
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#
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#func _commit_camera_anchor() -> void:
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#_switch_scheduled = false
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#if not _dirty:
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#return
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#_dirty = false
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#
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## 清理无效
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#_cached_anchors = _cached_anchors.filter(func(a): return is_instance_valid(a))
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#
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#var winner: CameraAnchor = _pick_best_anchor()
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#
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#if winner == null:
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#return
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#
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#if winner == _current_anchor:
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#return
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#
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#switch_anchor(winner)
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#
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#func _pick_best_anchor() -> CameraAnchor:
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#var best: CameraAnchor = null
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#var best_p := -INF
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#
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#for a in _cached_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_p = a._priority
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#best = a
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#
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#return best
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#
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### 排序已有的锚点
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#func _sort_anchors() -> void:
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#_cached_anchors.sort_custom(func(a, b):
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#return a._priority > b._priority
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#)
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#
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### 尝试自切换
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#func _try_auto_switch() -> void:
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#for a in _cached_anchors:
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#if a.enabled:
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#switch_anchor(a)
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#_current_anchor = a
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#return
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#
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#
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#
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###应用Anchor的Limit
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#func _apply_anchor_limits(anchor: CameraAnchor) -> void:
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#if not camera_2d:
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#return
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#camera_2d.limit_left = anchor.global_position.x + anchor.limit_left
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#camera_2d.limit_right = anchor.global_position.x + anchor.limit_right
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#camera_2d.limit_top = anchor.global_position.y + anchor.limit_top
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#camera_2d.limit_bottom = anchor.global_position.y + anchor.limit_bottom
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#
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#func _clear_camera_limits() -> void:
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#if not camera_2d:
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#return
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#camera_2d.limit_left = -10000000
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#camera_2d.limit_right = 10000000
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#camera_2d.limit_top = -10000000
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#camera_2d.limit_bottom = 10000000
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#
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### 切换相机
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#func switch_anchor(target_anchor: CameraAnchor) -> void:
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#if target_anchor == null:
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#return
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#if target_anchor == _current_anchor:
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#return
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#if not is_instance_valid(camera_2d):
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#return
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#
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##优先清除已有的remote
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#if _player_remote:
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#_player_remote.queue_free()
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#_player_remote = null
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#
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## 中断旧 Tween
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#if _switch_tween and _switch_tween.is_running():
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#_switch_tween.kill()
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#_switch_tween = null
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#
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#var camera := camera_2d
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#var blend_time : float = max(target_anchor.blend_time, 0.001)
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#
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#_clear_camera_limits()
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#
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#_switch_tween = get_tree().create_tween()
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#_switch_tween.set_ignore_time_scale(true)
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#_switch_tween.set_trans(Tween.TRANS_CUBIC)
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#_switch_tween.set_ease(Tween.EASE_OUT)
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#
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## ===== 位置 =====
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#_switch_tween.tween_property(
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#self,
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#"_base_camera_pos",
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#target_anchor.global_position,
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#blend_time
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#)
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#
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## ===== Zoom =====
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#_switch_tween.parallel().tween_property(
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#camera,
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#"zoom",
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#target_anchor.zoom,
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#blend_time * 1.5
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#)
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#
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## 完成回调
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#_switch_tween.finished.connect(func():
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#_current_anchor = target_anchor
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#_update_anchor_follow_state(target_anchor)
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#_apply_anchor_limits(target_anchor)
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#)
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#
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#_current_anchor = target_anchor
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#
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#func _update_anchor_follow_state(anchor: CameraAnchor) -> void:
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#if not anchor.follow_player:
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#return
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#
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#var player := GlobalEvent.get_player()
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#if player:
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#_bind_camera_follow_to_player(player)
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#
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## ==========================
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## External API
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## ==========================
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### 重置所有的Camera的_priority
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#func reset_all_camera_priority() -> void:
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#for a in _cached_anchors:
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#a._priority = 0
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#
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### 返回屏幕比例
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#func get_screen_size() -> Vector2i:
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#return _screen_size
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