Mining computation update
* Added various views and helper functions used by the mining computation but which may be re-used in other parts. * Added mining computation update type and associated update function * New constants: game.resources.weightBase (the value used to compute weights from mining settings) and game.resources.extraction (the quantity extracted in a day from a full provider at difficulty 0)
This commit is contained in:
parent
038bba896a
commit
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20 changed files with 1139 additions and 2 deletions
legacyworlds-server-data/db-structure/parts
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@ -83,7 +83,10 @@ CREATE TYPE update_type AS ENUM (
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'PLANET_RES_REGEN' ,
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/* Compute income and upkeep of planets */
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'PLANET_MONEY'
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'PLANET_MONEY' ,
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/* Compute mining results for planets owned by empires */
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'PLANET_MINING'
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);
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-- Types of recapitulative e-mail messages
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@ -98,4 +98,44 @@ CREATE VIEW emp.mining_settings_view
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GRANT SELECT
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ON emp.mining_settings_view
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TO :dbuser;
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TO :dbuser;
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/*
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* Compute a resource provider's extraction factor
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*
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* This function computes the extraction factor - a multiplier which makes
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* mining more costly if the difficulty is high or if a provider is almost
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* empty - based on a provider's fill ratio and difficulty.
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*
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* The complete formula can be read on the Wiki:
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* https://wiki.legacyworlds.com/wiki/Mining#Resource_provider_extraction
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*
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* Parameters:
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* _fill_ratio The ratio between the provider's current and maximal
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* quantities
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* _difficulty The provider's extraction difficulty.
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*
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* Returns:
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* ? The provider's extraction factor
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*/
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DROP FUNCTION IF EXISTS verse.get_extraction_factor(
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DOUBLE PRECISION , DOUBLE PRECISION );
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CREATE FUNCTION verse.get_extraction_factor(
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_fill_ratio DOUBLE PRECISION ,
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_difficulty DOUBLE PRECISION )
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RETURNS DOUBLE PRECISION
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STRICT IMMUTABLE
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SECURITY INVOKER
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AS $get_extraction_factor$
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SELECT ( 1 - $2 * 0.5 ) * POW( $1 , 1.5 + 2 * $2 );
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$get_extraction_factor$ LANGUAGE SQL;
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REVOKE EXECUTE
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ON FUNCTION verse.get_extraction_factor(
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DOUBLE PRECISION , DOUBLE PRECISION )
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FROM PUBLIC;
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@ -0,0 +1,286 @@
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-- LegacyWorlds Beta 6
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-- PostgreSQL database scripts
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--
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-- Game updates - planet mining computations
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--
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-- Copyright(C) 2004-2012, DeepClone Development
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-- --------------------------------------------------------
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/*
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* Mining computation weights view
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* --------------------------------
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*
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* This view computes the actual values used in the mining computations for
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* each resource provider on all empire-owned planets.
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*
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* Columns:
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* planet_id The planet's identifier
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* resource_name_id The resource type's identifier
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* pmc_weight The computed weight
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*/
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DROP VIEW IF EXISTS sys.gu_pmc_weights_view CASCADE;
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CREATE VIEW sys.gu_pmc_weights_view
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AS SELECT planet_id , resource_name_id ,
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POW( sys.get_constant( 'game.resources.weightBase' ) ,
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mset_weight ) AS pmc_weight
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FROM emp.mining_settings_view;
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/*
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* Mining computation - total weights view
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* ----------------------------------------
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*
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* This view computes per-planet totals for actual mining weights.
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*
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* Columns:
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* planet_id The planet's identifier
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* pmc_total The sum of all mining weights on the planet.
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*/
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DROP VIEW IF EXISTS sys.gu_pmc_totals_view CASCADE;
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CREATE VIEW sys.gu_pmc_totals_view
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AS SELECT planet_id , SUM( pmc_weight ) AS pmc_total
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FROM sys.gu_pmc_weights_view
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GROUP BY planet_id;
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/*
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* Planet mining update data
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* --------------------------
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*
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* This type is used by the records used by planet mining updates to compute a
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* planet's mining output.
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*/
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DROP TYPE IF EXISTS sys.gu_pmc_data_type CASCADE;
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CREATE TYPE sys.gu_pmc_data_type AS (
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/* The planet's identifier */
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planet INT ,
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/* The resource's identifier */
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resource INT ,
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/* The provider's quantity of resources */
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quantity DOUBLE PRECISION ,
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/* The provider's maximal quantity of resources */
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quantity_max DOUBLE PRECISION ,
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/* The provider's extraction difficulty */
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difficulty DOUBLE PRECISION ,
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/* The empire who owns the planet, or NULL if the planet is neutral */
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empire INT ,
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/* The planet's happiness, or NULL if the planet is neutral */
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happiness REAL ,
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/* The weight computed from the resource's extraction priority as
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* set by either the empire in general or the planet-specific settings,
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* or NULL if the planet is neutral.
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*/
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weight DOUBLE PRECISION ,
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/* The total weight computed from either the empire-wide or the
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* planet-specific mining settings, or NULL if the planet is neutral.
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*/
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total_weight DOUBLE PRECISION
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);
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/*
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* Lock the rows and access the data used by the mining update
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*
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* This function executes a single query which serves the dual purpose of
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* locking all rows from various tables used by the planet mining update
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* and returning the data needed by the computation.
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*
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* As far as locking is concerned, the following tables are locked:
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* - Update records are already locked, so we don't care.
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* - Planets with resource providers are locked for share.
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* - Resource providers and corresponding resource records are locked
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* for update
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* - Resource definitions are locked for share.
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* - Owning empires, as well as their mining settings and any set of
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* planet-specific settings for one of the planets we're inspecting,
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* are locked for share.
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*
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* The data itself is returned as a set of rows using sys.gu_pmc_data_type
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*
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* Parameters:
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* _tick The identifier of the current game update
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*/
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DROP FUNCTION IF EXISTS sys.gu_pmc_get_data( BIGINT );
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CREATE FUNCTION sys.gu_pmc_get_data( _tick BIGINT )
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RETURNS SETOF sys.gu_pmc_data_type
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STRICT VOLATILE
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SECURITY INVOKER
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AS $gu_pmc_get_data$
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SELECT planet_id AS planet ,
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resource_name_id AS resource,
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resprov_quantity AS quantity ,
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resprov_quantity_max AS quantity_max ,
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resprov_difficulty AS difficulty ,
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empire_id AS empire ,
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happiness ,
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pmc_weight AS weight ,
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pmc_total AS total_weight
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FROM sys.updates _upd_sys
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INNER JOIN verse.updates _upd_verse
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ON _upd_sys.id = _upd_verse.update_id
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INNER JOIN verse.planets _planet
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ON _planet.name_id = _upd_verse.planet_id
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INNER JOIN verse.resource_providers _resprov
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USING ( planet_id )
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INNER JOIN verse.planet_resources _pres
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USING ( planet_id , resource_name_id )
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LEFT OUTER JOIN (
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SELECT _emp_planet.empire_id , _emp_planet.planet_id ,
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_emset.resource_name_id , pmc_weight ,
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pmc_total , _happ.current AS happiness
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FROM sys.updates _upd_sys
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INNER JOIN verse.updates _upd_verse
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ON _upd_sys.id = _upd_verse.update_id
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INNER JOIN emp.planets _emp_planet
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USING ( planet_id )
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INNER JOIN emp.empires _emp
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ON _emp_planet.empire_id = _emp.name_id
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INNER JOIN emp.mining_settings _emset
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USING ( empire_id )
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INNER JOIN verse.planet_happiness _happ
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USING ( planet_id )
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INNER JOIN sys.gu_pmc_weights_view
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USING ( planet_id , resource_name_id)
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INNER JOIN sys.gu_pmc_totals_view
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USING ( planet_id )
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LEFT OUTER JOIN (
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SELECT * FROM emp.planet_mining_settings
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FOR SHARE
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) AS _pmset
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USING ( empire_id , planet_id , resource_name_id )
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WHERE _upd_sys.last_tick = $1
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AND _upd_sys.status = 'PROCESSING'
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AND _upd_sys.gu_type = 'PLANET_MINING'
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FOR SHARE OF _emp_planet , _emp , _emset , _happ
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) AS _owner
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USING ( planet_id , resource_name_id )
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WHERE _upd_sys.last_tick = $1
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AND _upd_sys.status = 'PROCESSING'
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AND _upd_sys.gu_type = 'PLANET_MINING'
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FOR UPDATE OF _resprov , _pres
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FOR SHARE OF _planet ;
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$gu_pmc_get_data$ LANGUAGE SQL;
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REVOKE EXECUTE
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ON FUNCTION sys.gu_pmc_get_data( BIGINT )
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FROM PUBLIC;
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/*
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* Update a planet's resource provider and corresponding resource record
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*
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* This function will compute the amount of resources extracted from a
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* provider, and update both the provider itself and the corresponding
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* resource record (setting the income to whatever quantity was extracted).
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*
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* Parameters:
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* _input Data about the resource provider to update
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*/
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DROP FUNCTION IF EXISTS sys.gu_pmc_update_resource( sys.gu_pmc_data_type );
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CREATE FUNCTION sys.gu_pmc_update_resource( _input sys.gu_pmc_data_type )
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RETURNS VOID
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STRICT VOLATILE
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SECURITY INVOKER
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AS $gu_pmc_update_resource$
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DECLARE
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_extraction DOUBLE PRECISION;
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_allocation DOUBLE PRECISION;
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_production DOUBLE PRECISION;
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_quantity DOUBLE PRECISION;
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BEGIN
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_extraction := _input.quantity * verse.get_extraction_factor(
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_input.quantity / _input.quantity_max ,
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_input.difficulty );
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_allocation := _input.weight / _input.total_weight;
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_production := verse.adjust_production(
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verse.get_raw_production( _input.planet , 'MINE' ) ,
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_input.happiness )
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* sys.get_constant( 'game.resources.extraction' )
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/ 1440.0; -- FIXME: hardcoded!
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RAISE NOTICE 'Extraction % , allocation % , production %' , _extraction , _allocation , _production;
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_quantity := _allocation * _production * _extraction;
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IF _quantity > _input.quantity THEN
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_quantity := _input.quantity;
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END IF;
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UPDATE verse.resource_providers
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SET resprov_quantity = resprov_quantity - _quantity
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WHERE planet_id = _input.planet
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AND resource_name_id = _input.resource;
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UPDATE verse.planet_resources
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SET pres_income = _quantity
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WHERE planet_id = _input.planet
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AND resource_name_id = _input.resource;
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END;
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$gu_pmc_update_resource$ LANGUAGE PLPGSQL;
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REVOKE EXECUTE
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ON FUNCTION sys.gu_pmc_update_resource( sys.gu_pmc_data_type )
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FROM PUBLIC;
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/*
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* Planet mining game update
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*
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* Obtains all records to update for the current batch, then either set the
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* income to 0 without modifying the resource provider if the planet is
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* neutral, or call gu_pmc_update_resource() if there is an owner.
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*
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* Parameters:
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* _tick The current tick's identifier
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*/
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DROP FUNCTION IF EXISTS sys.process_planet_mining_updates( BIGINT );
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CREATE FUNCTION sys.process_planet_mining_updates( _tick BIGINT )
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RETURNS VOID
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STRICT VOLATILE
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SECURITY INVOKER
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AS $process_planet_mining_updates$
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DECLARE
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_row sys.gu_pmc_data_type;
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BEGIN
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FOR _row IN SELECT * FROM sys.gu_pmc_get_data( _tick )
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LOOP
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IF _row.empire IS NULL THEN
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-- Set resource income to 0 on neutrals
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UPDATE verse.planet_resources
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SET pres_income = 0
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WHERE planet_id = _row.planet
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AND resource_name_id = _row.resource;
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ELSE
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PERFORM sys.gu_pmc_update_resource( _row );
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END IF;
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END LOOP;
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END;
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$process_planet_mining_updates$ LANGUAGE PLPGSQL;
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REVOKE EXECUTE
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ON FUNCTION sys.process_planet_mining_updates( BIGINT )
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FROM PUBLIC;
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