78 lines
2.3 KiB
GDScript
78 lines
2.3 KiB
GDScript
extends Node3D
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## Aussenkamera: folgt dem Zug, drehbar und zoombar.
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const MIN_DIST := 14.0
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const MAX_DIST := 140.0
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var target: Node3D
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var yaw := 0.0
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var pitch := deg_to_rad(-34.0)
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var distance := 46.0
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var _cam: Camera3D
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var _focus := Vector3.ZERO
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var blocked := false ## zuletzt an einem Hindernis abgefangen
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func _ready() -> void:
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_cam = Camera3D.new()
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_cam.fov = 50.0
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_cam.far = 900.0
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add_child(_cam)
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func activate() -> void:
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_cam.current = true
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func is_active() -> bool:
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return _cam.current
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func _unhandled_input(event: InputEvent) -> void:
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if not is_active():
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return
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if event is InputEventMouseButton and event.pressed:
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if event.button_index == MOUSE_BUTTON_WHEEL_UP:
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distance = clampf(distance * 0.88, MIN_DIST, MAX_DIST)
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elif event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
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distance = clampf(distance * 1.14, MIN_DIST, MAX_DIST)
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func _process(delta: float) -> void:
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if not is_active():
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if target:
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_focus = target.global_position
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return
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var turn := 0.0
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if Input.is_key_pressed(KEY_A) or Input.is_key_pressed(KEY_LEFT):
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turn += 1.0
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if Input.is_key_pressed(KEY_D) or Input.is_key_pressed(KEY_RIGHT):
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turn -= 1.0
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yaw += turn * 1.5 * delta
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if Input.is_key_pressed(KEY_R):
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pitch = clampf(pitch + 0.9 * delta, deg_to_rad(-82.0), deg_to_rad(-8.0))
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if Input.is_key_pressed(KEY_F):
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pitch = clampf(pitch - 0.9 * delta, deg_to_rad(-82.0), deg_to_rad(-8.0))
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if target:
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_focus = _focus.lerp(target.global_position, clampf(delta * 5.0, 0.0, 1.0))
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blocked = false
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position = _focus
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var dir := Vector3(0, 0, 1).rotated(Vector3.RIGHT, pitch).rotated(Vector3.UP, yaw)
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var wanted: Vector3 = dir * distance
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_cam.position = _clip_to_view(wanted)
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_cam.look_at(global_position + Vector3(0, 2.5, 0), Vector3.UP)
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## Zieht die Kamera vor ein Hindernis, statt hindurchzuschauen.
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func _clip_to_view(local_target: Vector3) -> Vector3:
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var from: Vector3 = global_position + Vector3(0, 2.5, 0)
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var to: Vector3 = global_position + local_target
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var space := get_world_3d().direct_space_state
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var q := PhysicsRayQueryParameters3D.create(from, to, 2)
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var hit := space.intersect_ray(q)
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if hit.is_empty():
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return local_target
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var p: Vector3 = hit["position"] + (from - hit["position"]).normalized() * 0.7
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blocked = true
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return p - global_position
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func snap_to(p: Vector3) -> void:
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_focus = p
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position = p
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