Cleanup & bugfix

* ObjectRef::set_local_animation: fix wrong lua return (should push a boolean, currently returns nil)
* ObjectRef::set_eye_offset: fix wrong lua return (should push a boolean, currently returns nil)
* Fix various Server functions which depends on RemotePlayer objet and return true/false when player object is nil whereas it's a caller implementation error. Change those bool functions to void and add sanitize_check call instead. Current callers are always checking player object validity
* Optimize Server::setClouds : use CloudParams object ref instead of attribute deserialization from structure & perform RemotePlayer::setCloudParams directly in server class like many other calls
* Optimize Server::SendCloudParams: use CloudParams object ref instead of deserialized attributes

src/script/lua_api/l_object.cpp

@@ -493,11 +493,9 @@ int ObjectRef::l_set_local_animation(lua_State *L)
 	if (!lua_isnil(L, 6))
 		frame_speed = lua_tonumber(L, 6);
 
-	if (!getServer(L)->setLocalPlayerAnimations(player, frames, frame_speed))
-		return 0;
-
+	getServer(L)->setLocalPlayerAnimations(player, frames, frame_speed);
 	lua_pushboolean(L, true);
-	return 0;
+	return 1;
 }
 
 // get_local_animation(self)
@@ -544,11 +542,9 @@ int ObjectRef::l_set_eye_offset(lua_State *L)
 	/* TODO: if possible: improve the camera colision detetion to allow Y <= -1.5) */
 	offset_third.Y = rangelim(offset_third.Y,-10,15); //1.5*BS
 
-	if (!getServer(L)->setPlayerEyeOffset(player, offset_first, offset_third))
-		return 0;
-
+	getServer(L)->setPlayerEyeOffset(player, offset_first, offset_third);
 	lua_pushboolean(L, true);
-	return 0;
+	return 1;
 }
 
 // get_eye_offset(self)
@@ -1559,9 +1555,7 @@ int ObjectRef::l_set_sky(lua_State *L)
 	if (lua_isboolean(L, 5))
 		clouds = lua_toboolean(L, 5);
 
-	if (!getServer(L)->setSky(player, bgcolor, type, params, clouds))
-		return 0;
-
+	getServer(L)->setSky(player, bgcolor, type, params, clouds);
 	lua_pushboolean(L, true);
 	return 1;
 }
@@ -1631,14 +1625,7 @@ int ObjectRef::l_set_clouds(lua_State *L)
 	}
 	lua_pop(L, 1);
 
-	if (!getServer(L)->setClouds(player, cloud_params.density,
-			cloud_params.color_bright, cloud_params.color_ambient,
-			cloud_params.height, cloud_params.thickness,
-			cloud_params.speed))
-		return 0;
-
-	player->setCloudParams(cloud_params);
-
+	getServer(L)->setClouds(player, cloud_params);
 	lua_pushboolean(L, true);
 	return 1;
 }

src/server.cpp

@@ -1775,17 +1775,11 @@ void Server::SendSetSky(session_t peer_id, const video::SColor &bgcolor,
 	Send(&pkt);
 }
 
-void Server::SendCloudParams(session_t peer_id, float density,
-		const video::SColor &color_bright,
-		const video::SColor &color_ambient,
-		float height,
-		float thickness,
-		const v2f &speed)
+void Server::SendCloudParams(session_t peer_id, const CloudParams &params)
 {
 	NetworkPacket pkt(TOCLIENT_CLOUD_PARAMS, 0, peer_id);
-	pkt << density << color_bright << color_ambient
-			<< height << thickness << speed;
-
+	pkt << params.density << params.color_bright << params.color_ambient
+			<< params.height << params.thickness << params.speed;
 	Send(&pkt);
 }
 
@@ -3113,54 +3107,36 @@ Address Server::getPeerAddress(session_t peer_id)
 	return m_con->GetPeerAddress(peer_id);
 }
 
-bool Server::setLocalPlayerAnimations(RemotePlayer *player,
+void Server::setLocalPlayerAnimations(RemotePlayer *player,
 		v2s32 animation_frames[4], f32 frame_speed)
 {
-	if (!player)
-		return false;
-
+	sanity_check(player);
 	player->setLocalAnimations(animation_frames, frame_speed);
 	SendLocalPlayerAnimations(player->getPeerId(), animation_frames, frame_speed);
-	return true;
 }
 
-bool Server::setPlayerEyeOffset(RemotePlayer *player, v3f first, v3f third)
+void Server::setPlayerEyeOffset(RemotePlayer *player, const v3f &first, const v3f &third)
 {
-	if (!player)
-		return false;
-
+	sanity_check(player);
 	player->eye_offset_first = first;
 	player->eye_offset_third = third;
 	SendEyeOffset(player->getPeerId(), first, third);
-	return true;
 }
 
-bool Server::setSky(RemotePlayer *player, const video::SColor &bgcolor,
+void Server::setSky(RemotePlayer *player, const video::SColor &bgcolor,
 	const std::string &type, const std::vector<std::string> &params,
 	bool &clouds)
 {
-	if (!player)
-		return false;
-
+	sanity_check(player);
 	player->setSky(bgcolor, type, params, clouds);
 	SendSetSky(player->getPeerId(), bgcolor, type, params, clouds);
-	return true;
 }
 
-bool Server::setClouds(RemotePlayer *player, float density,
-	const video::SColor &color_bright,
-	const video::SColor &color_ambient,
-	float height,
-	float thickness,
-	const v2f &speed)
+void Server::setClouds(RemotePlayer *player, const CloudParams &params)
 {
-	if (!player)
-		return false;
-
-	SendCloudParams(player->getPeerId(), density,
-			color_bright, color_ambient, height,
-			thickness, speed);
-	return true;
+	sanity_check(player);
+	player->setCloudParams(params);
+	SendCloudParams(player->getPeerId(), params);
 }
 
 bool Server::overrideDayNightRatio(RemotePlayer *player, bool do_override,

src/server.h

@@ -59,6 +59,7 @@ class EmergeManager;
 class ServerScripting;
 class ServerEnvironment;
 struct SimpleSoundSpec;
+struct CloudParams;
 class ServerThread;
 
 enum ClientDeletionReason {
@@ -295,19 +296,14 @@ public:
 
 	Address getPeerAddress(session_t peer_id);
 
-	bool setLocalPlayerAnimations(RemotePlayer *player, v2s32 animation_frames[4],
+	void setLocalPlayerAnimations(RemotePlayer *player, v2s32 animation_frames[4],
 			f32 frame_speed);
-	bool setPlayerEyeOffset(RemotePlayer *player, v3f first, v3f third);
+	void setPlayerEyeOffset(RemotePlayer *player, const v3f &first, const v3f &third);
 
-	bool setSky(RemotePlayer *player, const video::SColor &bgcolor,
+	void setSky(RemotePlayer *player, const video::SColor &bgcolor,
 			const std::string &type, const std::vector<std::string> &params,
 			bool &clouds);
-	bool setClouds(RemotePlayer *player, float density,
-			const video::SColor &color_bright,
-			const video::SColor &color_ambient,
-			float height,
-			float thickness,
-			const v2f &speed);
+	void setClouds(RemotePlayer *player, const CloudParams &params);
 
 	bool overrideDayNightRatio(RemotePlayer *player, bool do_override, float brightness);
 
@@ -389,12 +385,7 @@ private:
 	void SendSetSky(session_t peer_id, const video::SColor &bgcolor,
 			const std::string &type, const std::vector<std::string> &params,
 			bool &clouds);
-	void SendCloudParams(session_t peer_id, float density,
-			const video::SColor &color_bright,
-			const video::SColor &color_ambient,
-			float height,
-			float thickness,
-			const v2f &speed);
+	void SendCloudParams(session_t peer_id, const CloudParams &params);
 	void SendOverrideDayNightRatio(session_t peer_id, bool do_override, float ratio);
 	void broadcastModChannelMessage(const std::string &channel,
 			const std::string &message, session_t from_peer);