feat: configure the disabling of PC physics when in 1st person view (#17

)


to save on performance if the player doesn't care about simulating PC physics when in 1st person view.

configs/configs.xml

@@ -42,6 +42,9 @@
             calculate the maximumActiveSkeletons. Increasing sample size will flatten outliers but can slow adjustment responsiveness.
 						Default is 5. -->
     <sampleSize>5</sampleSize>
+    <!-- disable1stPersonViewPhysics: if set to true, the physics of the PC won't be calculated when in 1st person view, to save performance.
+            Default is false. -->
+    <disable1stPersonViewPhysics>false</disable1stPersonViewPhysics>
     <!-- enableCuda: experimental GPU collision algorithm. Try this if you have a slow CPU and fast GPU -->
     <enableCuda>true</enableCuda>
   </smp>

hdtSMP64/ActorManager.cpp

@@ -196,7 +196,7 @@ namespace hdt
 				i.skeleton = nullptr;
 			}
 			else if (i.hasPhysics && i.updateAttachedState(playerCell, activeSkeletons >= maxActiveSkeletons))
-					activeSkeletons++;
+				activeSkeletons++;
 		}
 
 		m_skeletons.erase(
@@ -752,8 +752,14 @@ namespace hdt
 		{
 			if (isPlayerCharacter())
 			{
-				isActive = true;
-				state = SkeletonState::e_ActiveIsPlayer;
+				// That setting defines whether we don't set the PC skeleton as active
+				// when it is in 1st person view, to avoid calculating physics uselessly.
+				if (!(instance()->m_disable1stPersonViewPhysics // disabling?
+					&& PlayerCamera::GetSingleton()->cameraState == PlayerCamera::GetSingleton()->cameraStates[0])) // 1st person view
+				{
+					isActive = true;
+					state = SkeletonState::e_ActiveIsPlayer;
+				}
 			}
 			else if (isInPlayerView())
 			{

hdtSMP64/ActorManager.h

@@ -193,6 +193,10 @@ namespace hdt
 		bool m_autoAdjustMaxSkeletons = true; // Whether to dynamically change the maxActive skeletons to maintain min_fps
 		int m_maxActiveSkeletons = 20; // The maximum active skeletons; hard limit
 		int m_sampleSize = 5; // how many samples (each sample taken every second) for determining average time per activeSkeleton.
+
+		// @brief Depending on this setting, we avoid to calculate the physics of the PC when it is in 1st person view.
+		bool m_disable1stPersonViewPhysics = false;
+
 	private:
 		void setSkeletonsActive();
 	};

hdtSMP64/config.cpp

@@ -108,6 +108,8 @@ namespace hdt
 				}
 				else if (reader.GetLocalName() == "sampleSize")
 					ActorManager::instance()->m_sampleSize = std::max(reader.readInt(), 1);
+				else if (reader.GetLocalName() == "disable1stPersonViewPhysics")
+					ActorManager::instance()->m_disable1stPersonViewPhysics = reader.readBool();
 				else
 				{
 					_WARNING("Unknown config : %s", reader.GetLocalName());