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Fix recenter code in OpenXR Character Centric Movement (#1131)

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Co-authored-by: Hugo Locurcio <hugo.locurcio@hugo.pro>
Co-authored-by: Aaron Franke <arnfranke@yahoo.com>
This commit is contained in:
Bastiaan Olij
2024-11-16 05:03:19 +11:00
committed by GitHub
parent adf6d7e08d
commit 6db1062768
1 changed files with 30 additions and 17 deletions
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47
xr/openxr_character_centric_movement/player.gd
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@@ -16,29 +16,42 @@ var gravity := float(ProjectSettings.get_setting("physics/3d/default_gravity"))
## Called when the user has requested their view to be recentered.
func recenter() -> void:
# The code here assumes the player has walked into an area they shouldn't be
# and we return the player back to the character body.
# But other strategies can be applied here as well such as returning the player
# to a starting position or a checkpoint.
var xr_interface: OpenXRInterface = XRServer.find_interface("OpenXR")
if not xr_interface:
push_error("Couldn't access OpenXR interface!")
return
# Calculate where our camera should be, we start with our global transform.
var new_camera_transform : Transform3D = global_transform
var play_area_mode: XRInterface.PlayAreaMode = xr_interface.get_play_area_mode()
if play_area_mode == XRInterface.XR_PLAY_AREA_SITTING:
push_warning("Sitting play space is not suitable for this setup.")
elif play_area_mode == XRInterface.XR_PLAY_AREA_ROOMSCALE:
# This is already handled by the headset.
pass
else:
# Use Godot's own logic.
XRServer.center_on_hmd(XRServer.RESET_BUT_KEEP_TILT, true)
# Set to the height of our neck joint.
new_camera_transform.origin.y = neck_position_node.global_position.y
# XRCamera3D node won't be updated yet, so go straight to the source!
var head_tracker: XRPositionalTracker = XRServer.get_tracker("head")
if not head_tracker:
push_error("Couldn't locate head tracker!")
return
# Apply transform our our next position to get our desired camera transform.
new_camera_transform = new_camera_transform * neck_position_node.transform.inverse()
var pose: XRPose = head_tracker.get_pose("default")
var head_transform: Transform3D = pose.get_adjusted_transform()
# Remove tilt from camera transform.
var camera_transform : Transform3D = camera_node.transform
var forward_dir : Vector3 = camera_transform.basis.z
forward_dir.y = 0.0
camera_transform = camera_transform.looking_at(camera_transform.origin + forward_dir.normalized(), Vector3.UP, true)
# Get neck transform in XROrigin3D space
var neck_transform: Transform3D = neck_position_node.transform * head_transform
# Update our XR location.
origin_node.global_transform = new_camera_transform * camera_transform.inverse()
# Reset our XROrigin transform and apply the inverse of the neck position.
var new_origin_transform: Transform3D = Transform3D()
new_origin_transform.origin.x = -neck_transform.origin.x
new_origin_transform.origin.y = 0.0
new_origin_transform.origin.z = -neck_transform.origin.z
origin_node.transform = new_origin_transform
# Finally reset character orientation
transform.basis = Basis()
# Returns our move input by querying the move action on each controller.
func _get_movement_input() -> Vector2: