1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
<?xml version="1.0" encoding="UTF-8" ?>
<class name="ARVRServer" inherits="Object" category="Core" version="3.2">
<brief_description>
The AR/VR server.
</brief_description>
<description>
The AR/VR server is the heart of our AR/VR solution and handles all the processing.
</description>
<tutorials>
</tutorials>
<methods>
<method name="center_on_hmd">
<return type="void">
</return>
<argument index="0" name="rotation_mode" type="int" enum="ARVRServer.RotationMode">
</argument>
<argument index="1" name="keep_height" type="bool">
</argument>
<description>
This is an important function to understand correctly. AR and VR platforms all handle positioning slightly differently.
For platforms that do not offer spatial tracking, our origin point (0,0,0) is the location of our HMD, but you have little control over the direction the player is facing in the real world.
For platforms that do offer spatial tracking, our origin point depends very much on the system. For OpenVR, our origin point is usually the center of the tracking space, on the ground. For other platforms, it's often the location of the tracking camera.
This method allows you to center your tracker on the location of the HMD. It will take the current location of the HMD and use that to adjust all your tracking data; in essence, realigning the real world to your player's current position in the game world.
For this method to produce usable results, tracking information must be available. This often takes a few frames after starting your game.
You should call this method after a few seconds have passed. For instance, when the user requests a realignment of the display holding a designated button on a controller for a short period of time, or when implementing a teleport mechanism.
</description>
</method>
<method name="find_interface" qualifiers="const">
<return type="ARVRInterface">
</return>
<argument index="0" name="name" type="String">
</argument>
<description>
Finds an interface by its name. For instance, if your project uses capabilities of an AR/VR platform, you can find the interface for that platform by name and initialize it.
</description>
</method>
<method name="get_hmd_transform">
<return type="Transform">
</return>
<description>
Returns the primary interface's transformation.
</description>
</method>
<method name="get_interface" qualifiers="const">
<return type="ARVRInterface">
</return>
<argument index="0" name="idx" type="int">
</argument>
<description>
Gets the interface registered at a given index in our list of interfaces.
</description>
</method>
<method name="get_interface_count" qualifiers="const">
<return type="int">
</return>
<description>
Gets the number of interfaces currently registered with the AR/VR server. If your project supports multiple AR/VR platforms, you can look through the available interface, and either present the user with a selection or simply try to initialize each interface and use the first one that returns [code]true[/code].
</description>
</method>
<method name="get_interfaces" qualifiers="const">
<return type="Array">
</return>
<description>
Returns a list of available interfaces the ID and name of each interface.
</description>
</method>
<method name="get_last_commit_usec">
<return type="int">
</return>
<description>
</description>
</method>
<method name="get_last_frame_usec">
<return type="int">
</return>
<description>
</description>
</method>
<method name="get_last_process_usec">
<return type="int">
</return>
<description>
</description>
</method>
<method name="get_reference_frame" qualifiers="const">
<return type="Transform">
</return>
<description>
Gets the reference frame transform. Mostly used internally and exposed for GDNative build interfaces.
</description>
</method>
<method name="get_tracker" qualifiers="const">
<return type="ARVRPositionalTracker">
</return>
<argument index="0" name="idx" type="int">
</argument>
<description>
Gets the positional tracker at the given ID.
</description>
</method>
<method name="get_tracker_count" qualifiers="const">
<return type="int">
</return>
<description>
Gets the number of trackers currently registered.
</description>
</method>
</methods>
<members>
<member name="primary_interface" type="ARVRInterface" setter="set_primary_interface" getter="get_primary_interface" default="null">
</member>
<member name="world_scale" type="float" setter="set_world_scale" getter="get_world_scale" default="1.0">
Allows you to adjust the scale to your game's units. Most AR/VR platforms assume a scale of 1 game world unit = 1 real world meter.
</member>
</members>
<signals>
<signal name="interface_added">
<argument index="0" name="interface_name" type="String">
</argument>
<description>
Emitted when a new interface has been added.
</description>
</signal>
<signal name="interface_removed">
<argument index="0" name="interface_name" type="String">
</argument>
<description>
Emitted when an interface is removed.
</description>
</signal>
<signal name="tracker_added">
<argument index="0" name="tracker_name" type="String">
</argument>
<argument index="1" name="type" type="int">
</argument>
<argument index="2" name="id" type="int">
</argument>
<description>
Emitted when a new tracker has been added. If you don't use a fixed number of controllers or if you're using [ARVRAnchor]s for an AR solution, it is important to react to this signal to add the appropriate [ARVRController] or [ARVRAnchor] nodes related to this new tracker.
</description>
</signal>
<signal name="tracker_removed">
<argument index="0" name="tracker_name" type="String">
</argument>
<argument index="1" name="type" type="int">
</argument>
<argument index="2" name="id" type="int">
</argument>
<description>
Emitted when a tracker is removed. You should remove any [ARVRController] or [ARVRAnchor] points if applicable. This is not mandatory, the nodes simply become inactive and will be made active again when a new tracker becomes available (i.e. a new controller is switched on that takes the place of the previous one).
</description>
</signal>
</signals>
<constants>
<constant name="TRACKER_CONTROLLER" value="1" enum="TrackerType">
The tracker tracks the location of a controller.
</constant>
<constant name="TRACKER_BASESTATION" value="2" enum="TrackerType">
The tracker tracks the location of a base station.
</constant>
<constant name="TRACKER_ANCHOR" value="4" enum="TrackerType">
The tracker tracks the location and size of an AR anchor.
</constant>
<constant name="TRACKER_ANY_KNOWN" value="127" enum="TrackerType">
Used internally to filter trackers of any known type.
</constant>
<constant name="TRACKER_UNKNOWN" value="128" enum="TrackerType">
Used internally if we haven't set the tracker type yet.
</constant>
<constant name="TRACKER_ANY" value="255" enum="TrackerType">
Used internally to select all trackers.
</constant>
<constant name="RESET_FULL_ROTATION" value="0" enum="RotationMode">
Fully reset the orientation of the HMD. Regardless of what direction the user is looking to in the real world. The user will look dead ahead in the virtual world.
</constant>
<constant name="RESET_BUT_KEEP_TILT" value="1" enum="RotationMode">
Resets the orientation but keeps the tilt of the device. So if we're looking down, we keep looking down but heading will be reset.
</constant>
<constant name="DONT_RESET_ROTATION" value="2" enum="RotationMode">
Does not reset the orientation of the HMD, only the position of the player gets centered.
</constant>
</constants>
</class>
|