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.
This commit is contained in:
2026-07-06 00:07:54 +02:00
parent 0aede053cb
commit 3517762864
+18 -2
View File
@@ -12,9 +12,16 @@ extends Node3D
@export var deadzone_right := 3.0
@export var deadzone_forward := 3.0
@export var min_zoom_offset := Vector3(0, 5, 4)
@export var max_zoom_offset := Vector3(0, 16, 12)
@export var zoom_step := 0.1
var yaw := 0.0
var smoothed_yaw := 0.0
var zoom := 0.5
var zoom_smooth := 0.5
var focus_position := Vector3.ZERO
var desired_focus_position := Vector3.ZERO
@@ -25,13 +32,19 @@ func _ready() -> void:
if target:
focus_position = target.global_position
desired_focus_position = focus_position
global_position = focus_position + follow_offset
global_position = focus_position + min_zoom_offset.lerp(max_zoom_offset, zoom_smooth)
func _unhandled_input(event: InputEvent) -> void:
if event is InputEventMouseMotion:
yaw -= event.relative.x * mouse_sensitivity
if event is InputEventMouseButton:
if event.button_index == MOUSE_BUTTON_WHEEL_UP and event.pressed:
zoom = maxf(zoom - zoom_step, 0.0)
elif event.button_index == MOUSE_BUTTON_WHEEL_DOWN and event.pressed:
zoom = minf(zoom + zoom_step, 1.0)
if event.is_action_pressed("ui_cancel"):
Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
@@ -67,7 +80,10 @@ func _physics_process(delta: float) -> void:
focus_position = focus_position.lerp(desired_focus_position, focus_t)
var rotated_offset := follow_offset.rotated(Vector3.UP, smoothed_yaw)
zoom_smooth = lerpf(zoom_smooth, zoom, follow_t)
var active_offset := min_zoom_offset.lerp(max_zoom_offset, zoom_smooth)
var rotated_offset := active_offset.rotated(Vector3.UP, smoothed_yaw)
var desired_position := focus_position + rotated_offset
global_position = global_position.lerp(desired_position, follow_t)