enable client prediction

4 files changed, 30 insertions, 12 deletions

diff --git a/src/core/application.cc b/src/core/application.cc
index 09b3f61..fb82c6c 100644
--- a/src/core/application.cc
+++ b/src/core/application.cc
@@ -130,7 +130,10 @@ void Application::init(int count, char **arguments)
 
 	// client can set this to 1
 	Cvar::sv_private = Cvar::get("sv_private", "0");
-	Cvar::sv_private->set_info("[bool] indicates the client runs a networked server");
+	Cvar::sv_private->set_info("[bool] enable or disable network server for a client");
+
+	Cvar::cl_prediction = Cvar::get("cl_prediction", "1", Cvar::Archive);
+	Cvar::cl_prediction->set_info("[bool] enable or disable client prediction");
 
 	// load configuration
 	load_config();
diff --git a/src/core/cvar.cc b/src/core/cvar.cc
index 83ec5c4..9d90afd 100644
--- a/src/core/cvar.cc
+++ b/src/core/cvar.cc
@@ -23,6 +23,8 @@ Cvar				*Cvar::sv_private = 0;
 Cvar				*Cvar::sv_framerate = 0;
 Cvar				*Cvar::sv_name = 0;
 
+Cvar				*Cvar::cl_prediction = 0;
+
 Cvar				*Cvar::net_host = 0;
 Cvar				*Cvar::net_port = 0;
 Cvar				*Cvar::net_maxclients = 0;
diff --git a/src/core/cvar.h b/src/core/cvar.h
index fceb79b..620096b 100644
--- a/src/core/cvar.h
+++ b/src/core/cvar.h
@@ -116,6 +116,8 @@ public:
 
 	static Cvar		*con_ansi;	// console ANSI colors
 
+	static Cvar		*cl_prediction;	// client prediction
+
 	static Cvar		*net_host;	// network server ip (default binds to all interfaces)
 	static Cvar		*net_port;	// network port
 	static Cvar		*net_maxclients;// maximum number of connected clients
diff --git a/src/core/gameinterface.cc b/src/core/gameinterface.cc
index f50c1cc..cfa557b 100644
--- a/src/core/gameinterface.cc
+++ b/src/core/gameinterface.cc
@@ -128,17 +128,23 @@ void GameInterface::update_entity_clientstate(Entity *entity)
 		entity->entity_clientstate->assign(entity);
 	}
 
-	if (!(entity->flags() & core::Entity::Static))
+	if(Cvar::cl_prediction->value() == 0) {
+
+		entity->state()->state_axis.assign(entity->axis());
+		entity->state()->state_location.assign(entity->location());
 		return;
+	}
+
+	if (!(entity->flags() & core::Entity::Static)) {
 
-	if (game_clientframetime < game_serverframetime) {
+		// clientstate location
+		entity->state()->state_location = entity->state()->previouslocation() + 
+		(entity->location() - entity->state()->previouslocation()) * timeoffset();
+
+		if (game_clientframetime < game_serverframetime) {
 		
-		if (!(entity->flags() & core::Entity::Static)) {
-	
-			// clientstate location
-			entity->state()->state_location = entity->state()->previouslocation() + 
-			(entity->location() - entity->state()->previouslocation()) * timeoffset();
-	
+			//FIXME this is hopelessly broken
+
 			// http://local.wasp.uwa.edu.au/~pbourke/geometry/planeline/
 			float cosangle;
 			float angle;
@@ -164,7 +170,7 @@ void GameInterface::update_entity_clientstate(Entity *entity)
 	
 			l = p.length();
 			if ((fabs(side) - MIN_DELTA > 0)) {
-				cosangle = math::dotproduct(p, entity->state()->axis().up());		
+                                                            				cosangle = math::dotproduct(p, entity->state()->axis().up());		
 				if (fabs(cosangle) + MIN_DELTA < 1 ) {
 					angle = acos(cosangle) * 180.0f / M_PI;
 					angle = math::sgnf(side) * angle *  timeoffset();
@@ -216,15 +222,20 @@ void GameInterface::update_entity_clientstate(Entity *entity)
 				}
 			}
 			
+		} else {
+			entity->state()->state_axis.assign(entity->axis());
 		}
 	
 	} else {
+
 		entity->state()->assign(entity);
 	}
 }
 
 void GameInterface::update_clientstate(float seconds)
 {
+	game_clientframetime += seconds;
+
 	std::map<unsigned int, core::Entity *>::iterator it;
 	for (it=core::Entity::registry.begin(); it != core::Entity::registry.end(); it++) {
 		update_entity_clientstate((*it).second);
@@ -233,8 +244,8 @@ void GameInterface::update_clientstate(float seconds)
 
 float GameInterface::timeoffset() {
 
-	if (game_clientframetime > game_serverframetime)
-		return 1;
+	//if (game_clientframetime > game_serverframetime)
+	//	return 1;
 
 	float d = game_serverframetime - game_previousframetime;
 	if (d <= 0)