From a7ce6b8d7c30768d064638c42fd06d6f909fafdf Mon Sep 17 00:00:00 2001
From: Bastiaan Olij <mux213@gmail.com>
Date: Thu, 18 Feb 2021 14:05:42 +1100
Subject: [PATCH] Adding a runtime selection dropdown into the editor

---
 demo/Main.tscn                                | 15 ------
 .../godot-openxr/OpenXRRuntimeSelect.gdns     |  8 +++
 .../godot-openxr/editor/OpenXRRunSelect.gd    | 53 +++++++++++++++++++
 .../godot-openxr/editor/OpenXRRunSelect.tscn  | 14 +++++
 demo/addons/godot-openxr/plugin.cfg           |  7 +++
 demo/addons/godot-openxr/plugin.gd            | 15 ++++++
 demo/addons/godot-openxr/runtimes.json        | 22 ++++++++
 demo/project.godot                            |  4 ++
 src/godot_openxr.cpp                          |  1 +
 9 files changed, 124 insertions(+), 15 deletions(-)
 create mode 100644 demo/addons/godot-openxr/OpenXRRuntimeSelect.gdns
 create mode 100644 demo/addons/godot-openxr/editor/OpenXRRunSelect.gd
 create mode 100644 demo/addons/godot-openxr/editor/OpenXRRunSelect.tscn
 create mode 100644 demo/addons/godot-openxr/plugin.cfg
 create mode 100644 demo/addons/godot-openxr/plugin.gd
 create mode 100644 demo/addons/godot-openxr/runtimes.json

diff --git a/demo/Main.tscn b/demo/Main.tscn
index 061886ee..9d80920c 100644
--- a/demo/Main.tscn
+++ b/demo/Main.tscn
@@ -55,23 +55,13 @@ visible = true
 
 [node name="Info" parent="FPSController/LeftHandController" index="0" instance=ExtResource( 8 )]
 transform = Transform( 1, 0, 0, 0, 0.939693, 0.34202, 0, -0.34202, 0.939693, 0.0483518, 0.0719222, 0 )
-enabled = true
 screen_size = Vector2( 0.16, 0.12 )
 viewport_size = Vector2( 600, 400 )
-transparent = true
 scene = ExtResource( 9 )
 collision_layer = 0
 
 [node name="Function_Teleport" parent="FPSController/LeftHandController" index="1" instance=ExtResource( 10 )]
 collision_mask = 1022
-enabled = true
-teleport_button = 15
-can_teleport_color = Color( 0, 1, 0, 1 )
-cant_teleport_color = Color( 1, 0, 0, 1 )
-player_height = 1.8
-player_radius = 0.4
-strength = 5.0
-max_slope = 20.0
 camera = NodePath("../../ARVRCamera")
 
 [node name="Function_pointer" parent="FPSController/LeftHandController" index="2" instance=ExtResource( 13 )]
@@ -85,10 +75,8 @@ visible = true
 
 [node name="Info" parent="FPSController/RightHandController" index="0" instance=ExtResource( 8 )]
 transform = Transform( 1, 0, 0, 0, 0.939693, 0.34202, 0, -0.34202, 0.939693, -0.0871993, 0.072, 0 )
-enabled = true
 screen_size = Vector2( 0.16, 0.12 )
 viewport_size = Vector2( 600, 400 )
-transparent = true
 scene = ExtResource( 9 )
 collision_layer = 0
 
@@ -134,10 +122,7 @@ transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, -6 )
 
 [node name="Screen" parent="." instance=ExtResource( 8 )]
 transform = Transform( 0.843251, 0, -0.53752, 0, 1, 0, 0.53752, 0, 0.843251, 1.92678, 1.5, -2.47671 )
-enabled = true
-screen_size = Vector2( 3, 2 )
 viewport_size = Vector2( 600, 400 )
-transparent = true
 scene = ExtResource( 12 )
 collision_layer = 1024
 
diff --git a/demo/addons/godot-openxr/OpenXRRuntimeSelect.gdns b/demo/addons/godot-openxr/OpenXRRuntimeSelect.gdns
new file mode 100644
index 00000000..b36afb43
--- /dev/null
+++ b/demo/addons/godot-openxr/OpenXRRuntimeSelect.gdns
@@ -0,0 +1,8 @@
+[gd_resource type="NativeScript" load_steps=2 format=2]
+
+[ext_resource path="res://addons/godot-openxr/godot_openxr.gdnlib" type="GDNativeLibrary" id=1]
+
+[resource]
+resource_name = "OpenXRRuntimeSelect"
+class_name = "OpenXRRuntimeSelect"
+library = ExtResource( 1 )
diff --git a/demo/addons/godot-openxr/editor/OpenXRRunSelect.gd b/demo/addons/godot-openxr/editor/OpenXRRunSelect.gd
new file mode 100644
index 00000000..71d242ca
--- /dev/null
+++ b/demo/addons/godot-openxr/editor/OpenXRRunSelect.gd
@@ -0,0 +1,53 @@
+tool
+extends OptionButton
+
+var available_runtimes : Array = Array()
+onready var platform = OS.get_name()
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	var current_runtime = 0
+
+	# read our json file, may have entries for multiple platforms, we'll filter them later
+	var f = File.new()
+	if (f.open("res://addons/godot-openxr/runtimes.json", File.READ)) == OK:
+		var json = JSON.parse(f.get_as_text())
+		available_runtimes = json.result as Array
+		f.close()
+
+	# check what our current value is
+	var current_path = OS.get_environment("XR_RUNTIME_JSON")
+
+	if available_runtimes.size() > 0:
+		# reset our dropdown if applicable
+		clear()
+		add_item("Default", -1)
+
+		# check which runtimes are actually available
+		var dir = Directory.new()
+		var index = 0
+		for i in available_runtimes.size():
+			var runtime = available_runtimes[i]
+			if dir.file_exists(runtime["path"]):
+				add_item(runtime["name"], i)
+				index = index + 1
+				if available_runtimes[i]["path"] == current_path:
+					current_runtime = index
+
+		selected = current_runtime
+
+		visible = true
+	else:
+		# I guess nothing supported on this platform
+		visible = false
+
+func _on_OpenXRRunSelect_item_selected(index):
+	# this need latest 3.2.4
+	if index == 0:
+		print("Returning to default")
+		OS.set_environment("XR_RUNTIME_JSON", "")
+	else:
+		var i = get_item_id(index)
+		var runtime = available_runtimes[i]["path"]
+		print("Switching to " + runtime)
+		OS.set_environment("XR_RUNTIME_JSON", runtime)
diff --git a/demo/addons/godot-openxr/editor/OpenXRRunSelect.tscn b/demo/addons/godot-openxr/editor/OpenXRRunSelect.tscn
new file mode 100644
index 00000000..1066f9d9
--- /dev/null
+++ b/demo/addons/godot-openxr/editor/OpenXRRunSelect.tscn
@@ -0,0 +1,14 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://addons/godot-openxr/editor/OpenXRRunSelect.gd" type="Script" id=1]
+
+[node name="OpenXRRunSelect" type="OptionButton"]
+text = "Default"
+items = [ "Default", null, false, 9999, null, "SteamVR", null, false, 0, null, "Oculus", null, false, 1, null, "Microsoft MR", null, false, 2, null ]
+selected = 0
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[connection signal="item_selected" from="." to="." method="_on_OpenXRRunSelect_item_selected"]
diff --git a/demo/addons/godot-openxr/plugin.cfg b/demo/addons/godot-openxr/plugin.cfg
new file mode 100644
index 00000000..9d57b2b1
--- /dev/null
+++ b/demo/addons/godot-openxr/plugin.cfg
@@ -0,0 +1,7 @@
+[plugin]
+
+name="Godot OpenXR"
+description="Godot OpenXR plugin"
+author="Christoph Haagch and Bastiaan Olij"
+version="1.0.1"
+script="plugin.gd"
diff --git a/demo/addons/godot-openxr/plugin.gd b/demo/addons/godot-openxr/plugin.gd
new file mode 100644
index 00000000..4d9cfb47
--- /dev/null
+++ b/demo/addons/godot-openxr/plugin.gd
@@ -0,0 +1,15 @@
+tool
+extends EditorPlugin
+
+var openxr_run_select = null
+
+func _enter_tree():
+	# multiple runtimes are currently only supported on Windows
+	openxr_run_select = preload("res://addons/godot-openxr/editor/OpenXRRunSelect.tscn").instance()
+	add_control_to_container(CONTAINER_TOOLBAR, openxr_run_select)
+
+func _exit_tree():
+	if openxr_run_select:
+		remove_control_from_container(EditorPlugin.CONTAINER_TOOLBAR, openxr_run_select)
+		openxr_run_select.queue_free()
+		openxr_run_select = null
diff --git a/demo/addons/godot-openxr/runtimes.json b/demo/addons/godot-openxr/runtimes.json
new file mode 100644
index 00000000..e3cf1398
--- /dev/null
+++ b/demo/addons/godot-openxr/runtimes.json
@@ -0,0 +1,22 @@
+[
+    {
+        "name": "Monado",
+        "path": "/usr/share/openxr/1/openxr_monado.json"
+    },
+    {
+        "name": "SteamVR",
+        "path": "~/.steam/steam/steamapps/common/SteamVR/steamxr_linux64.json"
+    },
+    {
+        "name": "SteamVR",
+        "path": "C:\\Program Files (x86)\\Steam\\steamapps\\common\\SteamVR\\steamxr_win64.json"
+    },
+    {
+        "name": "Oculus",
+        "path": "C:\\Program Files\\Oculus\\Support\\oculus-runtime\\oculus_openxr_64.json"
+    },
+    {
+        "name": "Microsoft MR",
+        "path": "C:\\WINDOWS\\system32\\MixedRealityRuntime.json"
+    }
+]
diff --git a/demo/project.godot b/demo/project.godot
index d9cbab95..f796aa9e 100644
--- a/demo/project.godot
+++ b/demo/project.godot
@@ -18,6 +18,10 @@ config/icon="res://icon.png"
 
 window/vsync/use_vsync=false
 
+[editor_plugins]
+
+enabled=PoolStringArray( "res://addons/godot-openxr/plugin.cfg" )
+
 [gdnative]
 
 singletons=[ "res://addons/godot-openxr/godot_openxr.gdnlib" ]
diff --git a/src/godot_openxr.cpp b/src/godot_openxr.cpp
index 7c986201..1170a171 100644
--- a/src/godot_openxr.cpp
+++ b/src/godot_openxr.cpp
@@ -5,6 +5,7 @@
 // with loads of help from Thomas "Karroffel" Herzog
 
 #include "godot_openxr.h"
+
 #include "openxr/OpenXRConfig.h"
 #include "openxr/OpenXRHand.h"
 #include "openxr/OpenXRPose.h"