From 1b7ed3d847fa71d6df316bf36755b43daedf4c20 Mon Sep 17 00:00:00 2001
From: Howard Stearns <howard@highfidelity.io>
Date: Mon, 2 Nov 2015 20:40:40 -0800
Subject: [PATCH] away script

---
 examples/away.js           | 84 ++++++++++++++++++++++++++++++++++++++
 examples/defaultScripts.js |  1 +
 2 files changed, 85 insertions(+)
 create mode 100644 examples/away.js

diff --git a/examples/away.js b/examples/away.js
new file mode 100644
index 0000000000..9fd688dbb7
--- /dev/null
+++ b/examples/away.js
@@ -0,0 +1,84 @@
+"use strict";
+/*jslint vars: true, plusplus: true*/
+/*global HMD, AudioDevice, MyAvatar, Controller, Script, Overlays, print*/
+
+// Goes into "paused" when the '.' key (and automatically when started in HMD), and normal when pressing any key.
+// See MAIN CONTROL, below, for what "paused" actually does.
+
+var OVERLAY_DATA = {
+    text: "Paused:\npress any key to continue",
+    font: {size: 75},
+    color: {red: 200, green: 255, blue: 255},
+    alpha: 0.9
+};
+
+// ANIMATION
+// We currently don't have play/stopAnimation integrated with the animation graph, but we can get the same effect
+// using an animation graph with a state that we turn on and off through the animation var defined with that state.
+var awayAnimationHandlerId, activeAnimationHandlerId;
+function playAwayAnimation() {
+    function animateAway() {
+        return {isAway: true, isNotAway: false, isNotMoving: false};
+    }
+    awayAnimationHandlerId = MyAvatar.addAnimationStateHandler(animateAway, null);
+}
+function stopAwayAnimation() {
+    MyAvatar.removeAnimationStateHandler(awayAnimationHandlerId);
+    function animateActive(state) {
+        if (!state.isAway) { // Once the right state gets reflected back to us, we don't need the hander any more.
+            // But we are locked against handler changes during the execution of a handler, so remove asynchronously.
+            Script.setTimeout(function () { MyAvatar.removeAnimationStateHandler(activeAnimationHandlerId); }, 0);
+        }
+        return {isAway: false, isNotAway: true}; // IWBNI we had a way of deleting an anim var.
+    }
+    activeAnimationHandlerId = MyAvatar.addAnimationStateHandler(animateActive, ['isAway']);
+}
+
+// OVERLAY
+var overlay = Overlays.addOverlay("text", OVERLAY_DATA);
+function showOverlay() {
+    var screen = Controller.getViewportDimensions();
+    Overlays.editOverlay(overlay, {visible: true, x: screen.x / 4, y: screen.y / 4});
+}
+function hideOverlay() {
+    Overlays.editOverlay(overlay, {visible: false});
+}
+hideOverlay();
+
+
+// MAIN CONTROL
+var wasMuted, isAway;
+function goAway() {
+    if (isAway) {
+        return;
+    }
+    isAway = true;
+    print('going "away"');
+    wasMuted = AudioDevice.getMuted();
+    if (!wasMuted) {
+        AudioDevice.toggleMute();
+    }
+    MyAvatar.setEnableMeshVisible(false);  // just for our own display, without changing point of view
+    playAwayAnimation(); // animation is still seen by others
+    showOverlay();
+}
+function goActive(event) {
+    if (!isAway) {
+        if (event.text === '.') {
+            goAway();
+        }
+        return;
+    }
+    isAway = false;
+    print('going "active"');
+    if (!wasMuted) {
+        AudioDevice.toggleMute();
+    }
+    MyAvatar.setEnableMeshVisible(true); // IWBNI we respected Developer->Avatar->Draw Mesh setting.
+    stopAwayAnimation();
+    hideOverlay();
+}
+Controller.keyPressEvent.connect(goActive);
+if (HMD.active) {
+    goAway();
+}
diff --git a/examples/defaultScripts.js b/examples/defaultScripts.js
index 53e7e43aa9..6efe6edef3 100644
--- a/examples/defaultScripts.js
+++ b/examples/defaultScripts.js
@@ -8,6 +8,7 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+Script.load("away.js");
 Script.load("progress.js");
 Script.load("edit.js");
 Script.load("selectAudioDevice.js");