Sides and slots
Values many systems share: which side something is on, and how a unit’s spell, item and effect slots are numbered.
Sides
A side is 100 or 200, for the two sides that play, or 300 for what belongs to neither, such as a monster of no side. Where a field takes 0, it names no side; its note says what that means. A few fields carry a side in another form, and their notes say which.
Roster lists the players of each side, and a player’s place in that list is
their seat (see Objects and identifiers).
Spell slots
A champion has two books of spells. Its own book holds these slots:
| Slot | Holds |
|---|---|
| 0 to 3 | the champion’s spells; 3 is its ultimate |
| 4 on | the spell of the item in the inventory slot four below, for each such slot |
| after those | spells a server places for the match’s own purposes |
Its summoner book holds the two summoner spells, in slots 0 and 1.
A message that names a spell slot either carries a flag, set for the summoner
book and clear for the champion’s own, or names the champion’s own book only.
A cast’s description (SpellCast) carries no flag: the spell’s own data says
whether it is a summoner spell.
In 3.10–3.15
A cast’s slot also takes 64 to 72 for a basic attack and 73 to 81 for a critical one.
In 3.10
Of those, 64 is the champion’s basic attack and 73 its critical attack; the rest are its other basic and critical attacks.
A server MUST NOT name a champion book slot beyond the book’s last slot.
In 3.10
A champion’s own book ends at slot 59. A client ignores an
Autocastnaming a slot above 59, and applies aSpellInSlotor aSpellCostChangednaming one while reporting it as an error. A server MUST NOT name a champion book slot above 59.
Inventory slots
A champion’s inventory holds the six items a player sees and uses in slots 0 to 5, and further slots after them up to its last.
An item is cast from the spell slot four above its inventory slot, and moving an item moves its spell with it. A server MUST NOT name an inventory slot beyond the inventory’s last slot.
In 3.01–3.10
A client asks to swap only slots 0 to 5 (
SwapItems).
In 3.01–3.10
A champion’s inventory ends at slot 37. A client ignores a
RemoveItemAnswer,InventorySlot,ItemAdded,ItemUsedorItemChargesnaming a slot above 37. A server MUST NOT name an inventory slot above 37.
Effect slots
Adding an effect to a slot replaces whatever held it, and removing one empties the slot whatever its name.
Each unit has 64 slots for the effects it carries, 0 to 63. A slot outside that range does nothing.