75 lines
2.0 KiB
GDScript
75 lines
2.0 KiB
GDScript
extends Camera3D
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## ターゲットとなるNode3Dオブジェクト
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@export var target: Node3D
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## カメラの回転感度
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@export var mouse_sensitivity: float = 0.003
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## ターゲットからの距離
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@export var distance: float = 5.0
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## 最小・最大距離
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@export var min_distance: float = 2.0
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@export var max_distance: float = 20.0
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## ズーム速度
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@export var zoom_speed: float = 0.5
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## 縦方向の回転制限（ラジアン）
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@export var min_pitch: float = -PI / 2 + 0.1
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@export var max_pitch: float = PI / 2 - 0.1
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## マウスボタン（右クリックでカメラ操作）
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@export var rotate_button: MouseButton = MOUSE_BUTTON_RIGHT
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# 内部変数
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var _yaw: float = 0.0 # 水平回転
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var _pitch: float = 0.0 # 垂直回転
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var _is_rotating: bool = false
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func _ready() -> void:
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# 初期角度を設定
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if target:
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var direction = global_position - target.global_position
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_yaw = atan2(direction.x, direction.z)
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_pitch = asin(direction.y / direction.length())
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func _unhandled_input(event: InputEvent) -> void:
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# マウスボタンの押下/離す
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if event is InputEventMouseButton:
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if event.button_index == rotate_button:
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_is_rotating = event.pressed
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# マウスホイールでズーム
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elif event.button_index == MOUSE_BUTTON_WHEEL_UP:
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distance = clamp(distance - zoom_speed, min_distance, max_distance)
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elif event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
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distance = clamp(distance + zoom_speed, min_distance, max_distance)
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# マウス移動で回転
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elif event is InputEventMouseMotion and _is_rotating:
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_yaw -= event.relative.x * mouse_sensitivity
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_pitch += event.relative.y * mouse_sensitivity
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_pitch = clamp(_pitch, min_pitch, max_pitch)
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func _process(_delta: float) -> void:
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if not target:
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return
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# 球面座標系でカメラ位置を計算
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var offset = Vector3(
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cos(_pitch) * sin(_yaw),
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sin(_pitch),
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cos(_pitch) * cos(_yaw)
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) * distance
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# カメラ位置を設定
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global_position = target.global_position + offset
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# ターゲットを見る
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look_at(target.global_position, Vector3.UP)
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