48 lines
1.4 KiB
GDScript3
48 lines
1.4 KiB
GDScript3
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extends Camera2D
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@export var move_speed = 3 # camera position lerp speed
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@export var zoom_speed = 3 # camera zoom lerp speed for zooming in
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@export var min_zoom = 5 # camera won't zoom closer than this
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@export var max_zoom = 1 # camera won't zoom farther than this
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@export var margin = Vector2(400, 200) # include some buffer area around targets
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var targets = []
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@onready var screen_size = get_viewport_rect().size
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func _process(delta):
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if !targets:
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return
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# Keep the camera centered among all targets
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var p = Vector2.ZERO
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for target in targets:
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p += target.position
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p /= targets.size()
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position = lerp(position, p, move_speed * delta)
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# Find the zoom that will contain all targets
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var r = Rect2(position, Vector2.ONE)
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for target in targets:
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r = r.expand(target.position)
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r = r.grow_individual(margin.x, margin.y, margin.x, margin.y)
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var z
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if r.size.x > r.size.y * screen_size.aspect():
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z = 1 / clamp(r.size.x / screen_size.x, max_zoom, min_zoom)
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else:
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z = 1 / clamp(r.size.y / screen_size.y, max_zoom, min_zoom)
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# Apply zoom instantly if zooming out, or lerp if zooming in
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#if z < zoom.x: # Zooming in (smaller zoom level)
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zoom = lerp(zoom, Vector2.ONE * z, zoom_speed * delta)
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#else: # Zooming out (larger zoom level)
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#zoom = Vector2.ONE * z
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func add_target(t):
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if not t in targets:
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targets.append(t)
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func remove_target(t):
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if t in targets:
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targets.erase(t)
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