From ee8213d1d2c2008d2d996929500c9e87dac325a3 Mon Sep 17 00:00:00 2001
From: yum <yum.food.vr@gmail.com>
Date: Sat, 17 Dec 2022 17:51:12 -0800
Subject: Finish python virtual env

GUI can now download all TaSTT dependencies and install them into a
virtual environment.

* Add buttons to check embedded python version & install dependencies
* Add class to wrap interacting with embedded Python
* Put all TaSTT python scripts into a folder
---
 Scripts/steamvr.py | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Scripts/steamvr.py

(limited to 'Scripts/steamvr.py')

diff --git a/Scripts/steamvr.py b/Scripts/steamvr.py
new file mode 100644
index 0000000..ed4150c
--- /dev/null
+++ b/Scripts/steamvr.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python3
+
+# python3 -m pip install openvr
+# License: BSD-3.0 (requires showing notice in binary distributions)
+import openvr as vr
+import time
+
+EVENT_NONE = 0
+EVENT_RISING_EDGE = 1
+EVENT_FALLING_EDGE = 2
+
+class SessionState:
+    def __init__(self):
+        self.system = vr.init(vr.VRApplication_Background)
+        self.last_packet = 0
+        # Whether the configured input event is high or low.
+        self.event_high = False
+
+# Checks if the given button on the given controller is pressed.
+# Defaults to joystick click / left hand.
+# Returns three values:
+#   0 - button not pressed
+#   1 - button rising edge
+#   2 - button falling edge
+def pollButtonPress(
+        session_state: SessionState,
+        controller: vr.ETrackedControllerRole = vr.TrackedControllerRole_LeftHand,
+        button: vr.EVRButtonId = vr.k_EButton_Axis0
+        ) -> int:
+    lh_idx = session_state.system.getTrackedDeviceIndexForControllerRole(vr.TrackedControllerRole_LeftHand)
+    #print("Left hand device idx: {}".format(lh_idx))
+
+    got_state, state = session_state.system.getControllerState(lh_idx)
+    if not got_state:
+        return EVENT_NONE
+
+    if state.unPacketNum == session_state.last_packet:
+        return EVENT_NONE
+
+    # Clicking joysticks and moving joysticks fire the same events. To
+    # differentiate movement from clicking, we create a dead zone: if the event
+    # fires while the stick isn't moved far from center, we assume it's a
+    # click, not movement.
+    dead_zone_radius = 0.5
+
+    # This is the ID of event for the joystick being clicked.
+    joy_click = vr.k_EButton_Axis0
+    joy_click_mask = (1 << joy_click)
+    ret = EVENT_NONE
+    if (state.ulButtonPressed & joy_click_mask) != 0 and\
+            (state.rAxis[0].x**2 + state.rAxis[0].y**2 < dead_zone_radius**2):
+        #print("button pressed: %016x" % state.ulButtonPressed)
+        #for i in range(0, 5):
+        #    print("axis {} x: {} y: {}".format(i, state.rAxis[i].x, state.rAxis[i].y))
+        if not session_state.event_high:
+            ret = EVENT_RISING_EDGE
+        session_state.event_high = True
+    elif session_state.event_high:
+        session_state.event_high = False
+        ret = EVENT_FALLING_EDGE
+    return ret
+
+if __name__ == "__main__":
+    session_state = SessionState()
+    while True:
+        time.sleep(0.1)
+
+        event = pollButtonPress(session_state)
+        if event == EVENT_RISING_EDGE:
+            print("rising edge")
+        elif event == EVENT_FALLING_EDGE:
+            print("falling edge")
+
-- 
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