85 lines
2.1 KiB
GDScript3
85 lines
2.1 KiB
GDScript3
|
extends CameraToolBasic
|
|||
|
|
class_name ReedCameraFollowController
|
|||
|
|
|
|||
|
|
const _CONSTANTS := preload("res://addons/reedcamera/_data/CameraSystemConst.gd")
|
|||
|
|
|
|||
|
|
@export_group("Dead Zone")
|
|||
|
|
@export var dead_zone_ratio := Rect2(
|
|||
|
|
Vector2.ZERO, # 屏幕中心
|
|||
|
|
Vector2(0.4, 0.4) # 宽高（屏幕比例）
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
@export_group("Follow")
|
|||
|
|
@export var enabled_follow: bool = true
|
|||
|
|
@export var follow_lerp := 0.12 # 0~1，越大越“跟手”，越小越“蔚蓝感”的滞后
|
|||
|
|
|
|||
|
|
var _follow_node2d : Node2D = null
|
|||
|
|
var _desired_pos := Vector2.ZERO
|
|||
|
|
var _camera: Camera2D = null
|
|||
|
|
|
|||
|
|
func _update_follow(delta: float) -> void:
|
|||
|
|
if not enabled_follow:
|
|||
|
|
return
|
|||
|
|
|
|||
|
|
if not _follow_node2d:
|
|||
|
|
return
|
|||
|
|
|
|||
|
|
var cam := _get_camera_from_pointer()
|
|||
|
|
if not cam:
|
|||
|
|
return
|
|||
|
|
|
|||
|
|
# 初始化
|
|||
|
|
if not _initialized:
|
|||
|
|
_pos = cam.global_position
|
|||
|
|
_desired_pos = _pos
|
|||
|
|
_initialized = true
|
|||
|
|
|
|||
|
|
var view_rect := _get_camera_view_rect(cam)
|
|||
|
|
var dead_rect := _get_dead_zone_world_rect(view_rect)
|
|||
|
|
|
|||
|
|
var p := player.global_position
|
|||
|
|
var delta_move := Vector2.ZERO
|
|||
|
|
|
|||
|
|
if p.x < dead_rect.position.x:
|
|||
|
|
delta_move.x = p.x - dead_rect.position.x
|
|||
|
|
elif p.x > dead_rect.position.x + dead_rect.size.x:
|
|||
|
|
delta_move.x = p.x - (dead_rect.position.x + dead_rect.size.x)
|
|||
|
|
|
|||
|
|
if p.y < dead_rect.position.y:
|
|||
|
|
delta_move.y = p.y - dead_rect.position.y
|
|||
|
|
elif p.y > dead_rect.position.y + dead_rect.size.y:
|
|||
|
|
delta_move.y = p.y - (dead_rect.position.y + dead_rect.size.y)
|
|||
|
|
|
|||
|
|
if delta_move != Vector2.ZERO:
|
|||
|
|
_desired_pos += delta_move
|
|||
|
|
|
|||
|
|
# 可选 room clamp
|
|||
|
|
if use_room_clamp:
|
|||
|
|
_desired_pos = _desired_pos.clamp(
|
|||
|
|
room_world_rect.position,
|
|||
|
|
room_world_rect.position + room_world_rect.size
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
# 蔚蓝感：滞后 lerp
|
|||
|
|
_pos = _pos.lerp(_desired_pos, follow_lerp)
|
|||
|
|
|
|||
|
|
func _get_camera_from_pointer() -> Camera2D:
|
|||
|
|
if _camera:
|
|||
|
|
return _camera
|
|||
|
|
|
|||
|
|
var p := get_parent()
|
|||
|
|
if p and p.has_method("get_camera"):
|
|||
|
|
_camera = p.get_camera() as Camera2D
|
|||
|
|
return _camera
|
|||
|
|
|
|||
|
|
return _camera
|
|||
|
|
|
|||
|
|
func _get_camera_view_rect(cam: Camera2D) -> Rect2:
|
|||
|
|
var screen_size := cam.get_viewport_rect().size
|
|||
|
|
var zoom := cam.zoom
|
|||
|
|
zoom.x = maxf(zoom.x, 0.001)
|
|||
|
|
zoom.y = maxf(zoom.y, 0.001)
|
|||
|
|
|
|||
|
|
var size := screen_size / zoom
|
|||
|
|
return Rect2(cam.global_position - size * 0.5, size)
|