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59 lines
4.0 KiB
59 lines
4.0 KiB
--! Previous: sha1:8102b0362d2ae5b73ed1d56214f7fffa445c469e
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--! Hash: sha1:8a890a4c8807eb5a7aae90456ba1e7712cda502b
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--! Message: SummonedUnit table
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--- Connection between Players and Units, indicating how and when players have summoned this unit.
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CREATE TABLE IF NOT EXISTS SummonedUnit
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(
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--- The ID of this summoning instance.
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instanceId SERIAL PRIMARY KEY NOT NULL,
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--- The Player that summoned this unit at some point.
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playerId INT NOT NULL REFERENCES Player (id) ON DELETE CASCADE ON UPDATE CASCADE,
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--- The Unit that was summoned by this Player at some point.
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unitId INT NOT NULL REFERENCES Unit (id) ON DELETE CASCADE ON UPDATE CASCADE,
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--- The time and date this instance was summoned by pulling or recalling.
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summonedAt TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
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--- True if this instance was summoned by /pull (as opposed to /recall).
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wasPulled BOOLEAN NOT NULL DEFAULT FALSE,
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--- True if this instance was summoned by /recall (as opposed to /pull).
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wasRecalled BOOLEAN NOT NULL DEFAULT FALSE,
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--- The timestamps when this unit was resummoned because it appeared in a /pull while already summoned.
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--- Does not include the initial summoning if that summoning happened via /pull.
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resummonings TIMESTAMP WITH TIME ZONE ARRAY DEFAULT NULL,
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--- The time and date this instance was desummoned by digesting or releasing.
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desummonedAt TIMESTAMP WITH TIME ZONE DEFAULT NULL,
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--- The summoned unit (friendly or enemy) that digested this unit, if a summoned unit was responsible and that
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--- summoned unit has not been deleted somehow.
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digestedByInstanceId INT DEFAULT NULL REFERENCES SummonedUnit (instanceId) ON DELETE SET NULL ON UPDATE CASCADE,
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--- True if this instance was desummoned by being digested rather than being released.
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wasDigested BOOLEAN DEFAULT NULL,
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--- True if this instance was desummoned by being released rather than being digested.
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wasReleased BOOLEAN DEFAULT NULL,
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--- The unit's current health. If 0, the unit is unconscious and cannot participate in fights.
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--- At -MaxHealth, the unit has been fully digested and this record will be deleted.
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currentHealth INT NOT NULL,
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--- The unit's maximum health.
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maxHealth INT NOT NULL CHECK (maxHealth > 0),
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--- The unit's strength.
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strength INT NOT NULL CHECK (strength > 0),
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--- The unit's current health must be between maxHealth and -maxHealth (the latter of which means digestion).
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CONSTRAINT SummonedUnit_CurrentHealthBounds CHECK (
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currentHealth BETWEEN -maxHealth AND maxHealth),
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--- Exactly one of wasPulled or wasRecalled must be TRUE.
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CONSTRAINT SummonedUnit_ExactlyOneOrigin CHECK (
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((wasPulled IS TRUE OR wasRecalled IS TRUE) AND NOT (wasPulled IS FALSE AND wasRecalled IS FALSE))),
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--- Exactly one of wasDigested or wasReleased must be TRUE if desummonedAt is set,
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--- and both must be NULL if desummonedAt is NULL.
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CONSTRAINT SummonedUnit_ExactlyOneFate CHECK (
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((wasDigested IS TRUE OR wasReleased IS TRUE) = (desummonedAt IS NOT NULL))
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AND (wasDigested IS NULL OR wasReleased IS NULL) = (desummonedAt IS NULL)),
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--- The digesting summoned unit's instance ID must be set only if wasDigested is TRUE.
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CONSTRAINT SummonedUnit_DigesterForDigestedOnly CHECK (
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digestedByInstanceId IS NULL OR wasDigested IS TRUE)
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);
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--- No more than one instance of a particular unit may be summoned by the same player.
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--- Once the previous instance has been desummoned (by any method), the unit may be summoned again.
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CREATE UNIQUE INDEX IF NOT EXISTS SummonedUnit_OneInstancePerUnitPerPlayer
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ON SummonedUnit (playerId, unitId)
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WHERE (desummonedAt IS NULL);
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