feat: add scrollwheel camera zoom
Mouse wheel up/down smoothly zooms the camera in and out. Zoom range: close-in overview (5 high, 4 back) to wide survey (16 high, 12 back). Default sits at midpoint (10 high, 8 back) matching the previous fixed offset. Configurable via min_zoom_offset, max_zoom_offset, and zoom_step exports. Zoom interpolates with the same follow_speed as position tracking for consistent feel.
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+18
-2
@@ -12,9 +12,16 @@ extends Node3D
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@export var deadzone_right := 3.0
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@export var deadzone_forward := 3.0
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@export var min_zoom_offset := Vector3(0, 5, 4)
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@export var max_zoom_offset := Vector3(0, 16, 12)
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@export var zoom_step := 0.1
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var yaw := 0.0
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var smoothed_yaw := 0.0
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var zoom := 0.5
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var zoom_smooth := 0.5
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var focus_position := Vector3.ZERO
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var desired_focus_position := Vector3.ZERO
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@@ -25,13 +32,19 @@ func _ready() -> void:
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if target:
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focus_position = target.global_position
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desired_focus_position = focus_position
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global_position = focus_position + follow_offset
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global_position = focus_position + min_zoom_offset.lerp(max_zoom_offset, zoom_smooth)
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func _unhandled_input(event: InputEvent) -> void:
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if event is InputEventMouseMotion:
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yaw -= event.relative.x * mouse_sensitivity
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if event is InputEventMouseButton:
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if event.button_index == MOUSE_BUTTON_WHEEL_UP and event.pressed:
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zoom = maxf(zoom - zoom_step, 0.0)
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elif event.button_index == MOUSE_BUTTON_WHEEL_DOWN and event.pressed:
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zoom = minf(zoom + zoom_step, 1.0)
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if event.is_action_pressed("ui_cancel"):
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Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
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@@ -67,7 +80,10 @@ func _physics_process(delta: float) -> void:
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focus_position = focus_position.lerp(desired_focus_position, focus_t)
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var rotated_offset := follow_offset.rotated(Vector3.UP, smoothed_yaw)
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zoom_smooth = lerpf(zoom_smooth, zoom, follow_t)
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var active_offset := min_zoom_offset.lerp(max_zoom_offset, zoom_smooth)
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var rotated_offset := active_offset.rotated(Vector3.UP, smoothed_yaw)
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var desired_position := focus_position + rotated_offset
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global_position = global_position.lerp(desired_position, follow_t)
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