From 9bafd82b2c03c1f786785acfd4e485e0030d864b Mon Sep 17 00:00:00 2001
From: "Anthony J. Thibault" <tony@highfidelity.io>
Date: Tue, 9 Aug 2016 15:49:00 -0700
Subject: [PATCH] marketplace now pops up a marketplace web entity

---
 scripts/system/libraries/WebBuddy.js | 95 ++++++++++++++++++++++++++++
 scripts/system/marketplace.js        | 37 ++++++++---
 2 files changed, 124 insertions(+), 8 deletions(-)
 create mode 100644 scripts/system/libraries/WebBuddy.js

diff --git a/scripts/system/libraries/WebBuddy.js b/scripts/system/libraries/WebBuddy.js
new file mode 100644
index 0000000000..d584bcc564
--- /dev/null
+++ b/scripts/system/libraries/WebBuddy.js
@@ -0,0 +1,95 @@
+//
+//  WebBuddy.js
+//
+//  Created by Anthony J. Thibault on 8/8/2016
+//  Copyright 2016 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+var NEGATIVE_ONE = 65535;
+
+// ctor
+WebBuddy = function (url) {
+
+    var ASPECT = 4.0 / 3.0;
+    var WIDTH = 0.4;
+
+    var spawnPoint = Vec3.sum(Vec3.sum(MyAvatar.position, Vec3.multiply(1.0, Quat.getFront(MyAvatar.orientation))),
+                              {x: 0, y: 0.5, z: 0});
+
+    var webEntityPosition = spawnPoint;
+    var webEntityRotation = MyAvatar.orientation;
+    this.webEntityID = Entities.addEntity({
+        type: "Web",
+        sourceUrl: url,
+        dimensions: {x: WIDTH, y: WIDTH * ASPECT, z: 0.1},
+        position: webEntityPosition,
+        rotation: webEntityRotation,
+        name: "web",
+        dynamic: true,
+        angularDamping: 0.9,
+        damping: 0.9,
+        gravity: {x: 0, y: 0, z: 0},
+        shapeType: "box",
+        userData: JSON.stringify({
+            "grabbableKey": {"grabbable": true}
+        }),
+        parentID: MyAvatar.sessionUUID,
+        parentJointIndex: NEGATIVE_ONE
+    });
+
+    this.state = "idle";
+
+    // compute the room/sensor matrix of the entity.
+    var invRoomMat = Mat4.inverse(MyAvatar.sensorToWorldMatrix);
+    var entityWorldMat = Mat4.createFromRotAndTrans(webEntityRotation, webEntityPosition);
+    this.entityRoomMat = Mat4.multiply(invRoomMat, entityWorldMat);
+
+    var _this = this;
+    this.updateFunc = function (dt) {
+        _this.update(dt);
+    };
+    Script.update.connect(this.updateFunc);
+};
+
+WebBuddy.prototype.destroy = function () {
+    Entities.deleteEntity(this.webEntityID);
+    Script.update.disconnect(this.updateFunc);
+};
+
+WebBuddy.prototype.update = function (dt) {
+
+    var props = Entities.getEntityProperties(this.webEntityID, ["position", "rotation", "parentID", "parentJointIndex"]);
+    var entityWorldMat;
+
+    if (this.state === "idle") {
+
+        if (props.parentID !== MyAvatar.sessionUUID || props.parentJointIndex !== NEGATIVE_ONE) {
+            this.state = "held";
+            return;
+        }
+
+        // convert the sensor/room matrix of the entity into world space, using the current sensorToWorldMatrix
+        var roomMat = MyAvatar.sensorToWorldMatrix;
+        entityWorldMat = Mat4.multiply(roomMat, this.entityRoomMat);
+
+        // slam the world space position and orientation
+        Entities.editEntity(this.webEntityID, {
+            position: Mat4.extractTranslation(entityWorldMat),
+            rotation: Mat4.extractRotation(entityWorldMat)
+        });
+    } else if (this.state === "held") {
+        if (props.parentID === MyAvatar.sessionUUID && props.parentJointIndex === NEGATIVE_ONE) {
+
+            // re-compute the room/sensor matrix for the avatar now that it has been released.
+            var invRoomMat = Mat4.inverse(MyAvatar.sensorToWorldMatrix);
+            entityWorldMat = Mat4.createFromRotAndTrans(props.rotation, props.position);
+            this.entityRoomMat = Mat4.multiply(invRoomMat, entityWorldMat);
+
+            this.state = "idle";
+            return;
+        }
+    }
+};
+
diff --git a/scripts/system/marketplace.js b/scripts/system/marketplace.js
index 356ed8e8cf..26d46d6219 100644
--- a/scripts/system/marketplace.js
+++ b/scripts/system/marketplace.js
@@ -8,6 +8,9 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+/* global WebBuddy */
+Script.include("./libraries/WebBuddy.js");
+
 var toolIconUrl = Script.resolvePath("assets/images/tools/");
 
 var MARKETPLACE_URL = "https://metaverse.highfidelity.com/marketplace";
@@ -22,26 +25,44 @@ var marketplaceWindow = new OverlayWebWindow({
 var toolHeight = 50;
 var toolWidth = 50;
 var TOOLBAR_MARGIN_Y = 0;
+var marketplaceVisible = false;
+var marketplaceWebBuddy;
 
+function shouldShowWebBuddyMarketplace() {
+    var rightPose = Controller.getPoseValue(Controller.Standard.RightHand);
+    var leftPose = Controller.getPoseValue(Controller.Standard.LeftHand);
+    return HMD.active && (leftPose.valid || rightPose.valid);
+}
 
 function showMarketplace(marketplaceID) {
-    var url = MARKETPLACE_URL;
-    if (marketplaceID) {
-        url = url + "/items/" + marketplaceID;
+    if (shouldShowWebBuddyMarketplace()) {
+        marketplaceWebBuddy = new WebBuddy("https://metaverse.highfidelity.com/marketplace");
+    } else {
+        var url = MARKETPLACE_URL;
+        if (marketplaceID) {
+            url = url + "/items/" + marketplaceID;
+        }
+        marketplaceWindow.setURL(url);
+        marketplaceWindow.setVisible(true);
     }
-    marketplaceWindow.setURL(url);
-    marketplaceWindow.setVisible(true);
 
+    marketplaceVisible = true;
     UserActivityLogger.openedMarketplace();
 }
 
 function hideMarketplace() {
-    marketplaceWindow.setVisible(false);
-    marketplaceWindow.setURL("about:blank");
+    if (marketplaceWindow.visible) {
+        marketplaceWindow.setVisible(false);
+        marketplaceWindow.setURL("about:blank");
+    } else {
+        marketplaceWebBuddy.destroy();
+        marketplaceWebBuddy = null;
+    }
+    marketplaceVisible = false;
 }
 
 function toggleMarketplace() {
-    if (marketplaceWindow.visible) {
+    if (marketplaceVisible) {
         hideMarketplace();
     } else {
         showMarketplace();