From 9d6e5252a50c5f89197e9c2ead794589223d31aa Mon Sep 17 00:00:00 2001
From: bjorn <tie.372@gmail.com>
Date: Tue, 16 May 2017 20:25:29 -0600
Subject: [PATCH] lovr.timer.getAverageDelta;

---
 src/api/timer.c   | 6 ++++++
 src/timer/timer.c | 5 +++++
 src/timer/timer.h | 2 ++
 3 files changed, 13 insertions(+)

diff --git a/src/api/timer.c b/src/api/timer.c
index f875dcba..5a51efa9 100644
--- a/src/api/timer.c
+++ b/src/api/timer.c
@@ -13,6 +13,11 @@ int l_lovrTimerGetDelta(lua_State* L) {
   return 1;
 }
 
+int l_lovrTimerGetAverageDelta(lua_State* L) {
+  lua_pushnumber(L, lovrTimerGetAverageDelta());
+  return 1;
+}
+
 int l_lovrTimerGetFPS(lua_State* L) {
   lua_pushnumber(L, lovrTimerGetFPS());
   return 1;
@@ -36,6 +41,7 @@ int l_lovrTimerSleep(lua_State* L) {
 
 const luaL_Reg lovrTimer[] = {
   { "getDelta", l_lovrTimerGetDelta },
+  { "getAverageDelta", l_lovrTimerGetAverageDelta },
   { "getFPS", l_lovrTimerGetFPS },
   { "getTime", l_lovrTimerGetTime },
   { "step", l_lovrTimerStep },
diff --git a/src/timer/timer.c b/src/timer/timer.c
index 59a6494b..57c037b8 100644
--- a/src/timer/timer.c
+++ b/src/timer/timer.c
@@ -28,6 +28,7 @@ double lovrTimerStep() {
   timerState.tickSum -= timerState.tickBuffer[timerState.tickIndex];
   timerState.tickSum += timerState.dt;
   timerState.tickBuffer[timerState.tickIndex] = timerState.dt;
+  timerState.averageDelta = timerState.tickSum / TICK_SAMPLES;
   timerState.fps = (int) (1 / (timerState.tickSum / TICK_SAMPLES) + .5);
   if (++timerState.tickIndex == TICK_SAMPLES) {
     timerState.tickIndex = 0;
@@ -35,6 +36,10 @@ double lovrTimerStep() {
   return timerState.dt;
 }
 
+double lovrTimerGetAverageDelta() {
+  return timerState.averageDelta;
+}
+
 int lovrTimerGetFPS() {
   return timerState.fps;
 }
diff --git a/src/timer/timer.h b/src/timer/timer.h
index dfdbfdc7..e706653c 100644
--- a/src/timer/timer.h
+++ b/src/timer/timer.h
@@ -9,6 +9,7 @@ typedef struct {
   int tickIndex;
   double tickSum;
   double tickBuffer[TICK_SAMPLES];
+  double averageDelta;
   int fps;
 } TimerState;
 
@@ -16,5 +17,6 @@ void lovrTimerInit();
 double lovrTimerGetDelta();
 double lovrTimerGetTime();
 double lovrTimerStep();
+double lovrTimerGetAverageDelta();
 int lovrTimerGetFPS();
 void lovrTimerSleep(double seconds);