Resource provider regeneration

Implemented resource regeneration computation in the
verse.compute_provider_regeneration() function.

Created the PLANET_RES_REGEN update type, and added the corresponding
implementation.

Added resource regeneration constants registration.

legacyworlds-server-data/db-structure/parts/updates/105-planet-resource-regeneration.sql

@@ -0,0 +1,47 @@
+-- LegacyWorlds Beta 6
+-- PostgreSQL database scripts
+--
+-- Game updates - resource regeneration
+--
+-- Copyright(C) 2004-2012, DeepClone Development
+-- --------------------------------------------------------
+
+
+/*
+ * Resource provider regeneration update
+ * 
+ * This function computes the regeneration of resource providers for the current batch
+ * of planets.
+ * 
+ * Parameters:
+ *		_tick		The identifier of the game update
+ */
+CREATE OR REPLACE FUNCTION sys.process_planet_res_regen_updates( _tick BIGINT )
+	RETURNS VOID
+	STRICT VOLATILE
+	SECURITY INVOKER
+AS $process_planet_res_regen_updates$
+
+	UPDATE verse.resource_providers _provider
+
+		SET resprov_quantity = verse.compute_provider_regeneration(
+				_provider.resprov_quantity ,
+				_provider.resprov_quantity_max ,
+				_provider.resprov_recovery
+			)
+
+		FROM sys.updates _upd_sys
+			INNER JOIN verse.updates _upd_verse
+				ON _upd_verse.update_id = _upd_sys.id
+
+		WHERE _upd_sys.last_tick = $1
+			AND _upd_sys.status = 'PROCESSING'
+			AND _upd_sys.gu_type = 'PLANET_RES_REGEN'
+			AND _provider.planet_id = _upd_verse.planet_id;
+
+$process_planet_res_regen_updates$ LANGUAGE SQL;
+
+
+REVOKE EXECUTE
+	ON FUNCTION sys.process_planet_res_regen_updates( BIGINT )
+	FROM PUBLIC;