From bee8c0e2377f5e3a9a06f538cb894084a2ccf189 Mon Sep 17 00:00:00 2001
From: Andrew Meadows <andrew@highfidelity.io>
Date: Fri, 27 Mar 2015 13:56:03 -0700
Subject: [PATCH] "hover" if the "jump" key is held down long enough

---
 libraries/physics/src/CharacterController.cpp | 15 +++++++++++++++
 libraries/physics/src/CharacterController.h   |  1 +
 2 files changed, 16 insertions(+)

diff --git a/libraries/physics/src/CharacterController.cpp b/libraries/physics/src/CharacterController.cpp
index 40b9076a6a..09c6b5599f 100644
--- a/libraries/physics/src/CharacterController.cpp
+++ b/libraries/physics/src/CharacterController.cpp
@@ -232,6 +232,7 @@ CharacterController::CharacterController(AvatarData* avatarData) {
     _isOnGround = false;
     _isJumping = false;
     _isHovering = true;
+    _jumpToHoverStart = 0;
     setMaxSlope(btRadians(45.0f));
     _lastStepUp = 0.0f;
     _pendingFlags = 0;
@@ -678,6 +679,20 @@ bool CharacterController::canJump() const {
 
 void CharacterController::jump() {
     _pendingFlags |= PENDING_FLAG_JUMP;
+
+    // check for case where user is holding down "jump" key...
+    // we'll eventually tansition to "hover"
+    if (!_isHovering) {
+        if (!_isJumping) {
+            _jumpToHoverStart = usecTimestampNow();
+        } else {
+            quint64 now = usecTimestampNow();
+            const quint64 JUMP_TO_HOVER_PERIOD = USECS_PER_SECOND;
+            if (now - _jumpToHoverStart < JUMP_TO_HOVER_PERIOD) {
+                _isHovering = true;
+            }
+        }
+    }
 }
 
 void CharacterController::setGravity(btScalar gravity) {
diff --git a/libraries/physics/src/CharacterController.h b/libraries/physics/src/CharacterController.h
index 6751277c83..eeaa5836dd 100644
--- a/libraries/physics/src/CharacterController.h
+++ b/libraries/physics/src/CharacterController.h
@@ -85,6 +85,7 @@ protected:
     bool _isOnGround;
     bool _isJumping;
     bool _isHovering;
+    quint64 _jumpToHoverStart;
     btScalar _velocityTimeInterval;
     btScalar _stepDt;
     uint32_t _pendingFlags;