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https://github.com/Ukendio/jecs.git
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Fix docs
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Ukendio
parent
09ae7794ea
commit
4375150683
4 changed files with 136 additions and 147 deletions
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@ -31,7 +31,7 @@ local Name = world:component()
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local function parent(entity)
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return world:target(entity, ChildOf)
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end
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local function name(entity)
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local function getName(entity)
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return world:get(entity, Name)
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end
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0
docs/api/index.md
Normal file
0
docs/api/index.md
Normal file
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@ -1,6 +0,0 @@
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# Installing Jecs
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To use Jecs, you will need to add the library to your project's source folder.
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## Installing with Wally
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Navigate over to the Wally
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121
lib/init.lua
121
lib/init.lua
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@ -26,12 +26,11 @@ type Archetype = {
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records: {},
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}
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type Record = {
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archetype: Archetype,
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row: number,
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dense: i24,
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componentRecord: ArchetypeMap
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componentRecord: ArchetypeMap,
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}
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type EntityIndex = { dense: { [i24]: i53 }, sparse: { [i53]: Record } }
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@ -52,7 +51,7 @@ type ArchetypeMap = {
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first: ArchetypeMap,
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second: ArchetypeMap,
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parent: ArchetypeMap,
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size: number
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size: number,
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}
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type ComponentIndex = { [i24]: ArchetypeMap }
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@ -96,7 +95,7 @@ local function addFlags(isPair: boolean)
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end
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local function ECS_COMBINE(source: number, target: number): i53
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local e = source * 2^28 + target * ECS_ID_FLAGS_MASK
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local e = source * 268435456 + target * ECS_ID_FLAGS_MASK
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return e
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end
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@ -104,24 +103,20 @@ local function ECS_IS_PAIR(e: number)
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return (e % 2 ^ 4) // FLAGS_PAIR ~= 0
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end
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function separate(entity: number)
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local _typeFlags = entity % 0x10
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entity //= ECS_ID_FLAGS_MASK
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return entity // ECS_ENTITY_MASK, entity % ECS_GENERATION_MASK, _typeFlags
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function separate(e: number)
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local _typeFlags = e % 0x10
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-- Revert to //= after highligting gets fixed
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--
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e = e // ECS_ID_FLAGS_MASK
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return e // ECS_ENTITY_MASK, e % ECS_GENERATION_MASK, _typeFlags
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end
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-- HIGH 24 bits LOW 24 bits
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local function ECS_GENERATION(e: i53)
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e //= 0x10
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e = e // 0x10
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return e % ECS_GENERATION_MASK
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end
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-- SECOND
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local function ECS_ENTITY_T_LO(e: i53)
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e //= 0x10
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return e // ECS_ENTITY_MASK
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end
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local function ECS_GENERATION_INC(e: i53)
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local id, generation, flags = separate(e)
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@ -129,13 +124,18 @@ local function ECS_GENERATION_INC(e: i53)
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end
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-- FIRST gets the high ID
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local function ECS_ENTITY_T_HI(entity: i53): i24
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entity //= 0x10
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local first = entity % ECS_ENTITY_MASK
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return first
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local function ECS_ENTITY_T_HI(e: i53): i24
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e = e // 0x10
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return e % ECS_ENTITY_MASK
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end
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local function ECS_PAIR(pred: number, obj: number)
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-- SECOND
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local function ECS_ENTITY_T_LO(e: i53)
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e = e // 0x10
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return e // ECS_ENTITY_MASK
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end
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local function ECS_PAIR(pred: i53, obj: i53): i53
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local first
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local second: number = WILDCARD
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@ -148,35 +148,28 @@ local function ECS_PAIR(pred: number, obj: number)
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second = ECS_ENTITY_T_LO(pred)
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end
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return ECS_COMBINE(
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ECS_ENTITY_T_LO(first), second) + addFlags(--[[isPair]] true)
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return ECS_COMBINE(ECS_ENTITY_T_LO(first), second) + addFlags(--[[isPair]] true)
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end
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local function getAlive(entityIndex: EntityIndex, id: i24)
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local entityId = entityIndex.dense[id]
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local record = entityIndex.sparse[entityIndex.dense[id]]
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if not record then
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error(id.." is not alive")
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end
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return entityId
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end
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-- ECS_PAIR_FIRST, gets the relationship target / obj / HIGH bits
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local function ECS_PAIR_RELATION(entityIndex, e)
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assert(ECS_IS_PAIR(e))
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return getAlive(entityIndex, ECS_ENTITY_T_HI(e))
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end
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-- ECS_PAIR_SECOND gets the relationship / pred / LOW bits
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local function ECS_PAIR_OBJECT(entityIndex, e)
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assert(ECS_IS_PAIR(e))
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return getAlive(entityIndex, ECS_ENTITY_T_LO(e))
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end
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local function nextEntityId(entityIndex, index: i24): i53
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local id = ECS_COMBINE(index, 0)
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entityIndex.sparse[id] = {
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dense = index
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dense = index,
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} :: Record
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entityIndex.dense[index] = id
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@ -252,7 +245,7 @@ local function newEntity(entityId: i53, record: Record, archetype: Archetype)
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return record
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end
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local function moveEntity(entityIndex, entityId: i53, record: Record, to: Archetype)
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local function moveEntity(entityIndex: EntityIndex, entityId: i53, record: Record, to: Archetype)
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local sourceRow = record.row
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local from = record.archetype
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local destinationRow = archetypeAppend(entityId, to)
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@ -265,7 +258,12 @@ local function hash(arr): string | number
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return table.concat(arr, "_")
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end
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local function ensureComponentRecord(componentIndex: ComponentIndex, archetypeId, componentId, i): ArchetypeMap
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local function ensureComponentRecord(
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componentIndex: ComponentIndex,
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archetypeId: number,
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componentId: number,
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i: number
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): ArchetypeMap
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local archetypesMap = componentIndex[componentId]
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if not archetypesMap then
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@ -286,7 +284,6 @@ local function ECS_ID_IS_WILDCARD(e)
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return first == WILDCARD or second == WILDCARD
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end
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local function archetypeOf(world: any, types: { i24 }, prev: Archetype?): Archetype
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local ty = hash(types)
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@ -306,26 +303,24 @@ local function archetypeOf(world: any, types: {i24}, prev: Archetype?): Archetyp
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local object = ECS_PAIR_OBJECT(world.entityIndex, componentId)
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local idr_r = ECS_PAIR(relation, WILDCARD)
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ensureComponentRecord(
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componentIndex, id, idr_r, i)
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ensureComponentRecord(componentIndex, id, idr_r, i)
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records[idr_r] = i
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local idr_t = ECS_PAIR(WILDCARD, object)
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ensureComponentRecord(
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componentIndex, id, idr_t, i)
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ensureComponentRecord(componentIndex, id, idr_t, i)
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records[idr_t] = i
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end
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columns[i] = {}
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end
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local archetype = {
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columns = columns;
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edges = {};
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entities = {};
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id = id;
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records = records;
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type = ty;
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types = types;
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columns = columns,
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edges = {},
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entities = {},
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id = id,
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records = records,
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type = ty,
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types = types,
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}
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world.archetypeIndex[ty] = archetype
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world.archetypes[id] = archetype
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@ -337,20 +332,20 @@ local World = {}
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World.__index = World
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function World.new()
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local self = setmetatable({
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archetypeIndex = {};
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archetypes = {} :: Archetypes;
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componentIndex = {} :: ComponentIndex;
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archetypeIndex = {},
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archetypes = {} :: Archetypes,
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componentIndex = {} :: ComponentIndex,
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entityIndex = {
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dense = {},
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sparse = {}
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} :: EntityIndex;
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sparse = {},
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} :: EntityIndex,
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hooks = {
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[ON_ADD] = {};
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};
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nextArchetypeId = 0;
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nextComponentId = 0;
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nextEntityId = 0;
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ROOT_ARCHETYPE = (nil :: any) :: Archetype;
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[ON_ADD] = {},
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},
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nextArchetypeId = 0,
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nextComponentId = 0,
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nextEntityId = 0,
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ROOT_ARCHETYPE = (nil :: any) :: Archetype,
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}, World)
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self.ROOT_ARCHETYPE = archetypeOf(self, {})
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return self
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@ -644,20 +639,20 @@ end
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-- the less creation the better
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local function actualNoOperation() end
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local function noop(_self: Query, ...: i53): () -> (number, ...any)
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local function noop(_self: Query, ...): () -> ()
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return actualNoOperation :: any
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end
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local EmptyQuery = {
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__iter = noop;
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without = noop;
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__iter = noop,
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without = noop,
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}
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EmptyQuery.__index = EmptyQuery
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setmetatable(EmptyQuery, EmptyQuery)
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export type Query = typeof(EmptyQuery)
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function World.query(world: World, ...: i53): Query
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function World.query(world: World, ...): Query
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-- breaking?
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if (...) == nil then
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error("Missing components")
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@ -708,7 +703,7 @@ function World.query(world: World, ...: i53): Query
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length += 1
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compatibleArchetypes[length] = {
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archetype = archetype,
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indices = indices
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indices = indices,
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}
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end
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@ -857,11 +852,11 @@ function World.__iter(world: World): () -> (number?, unknown?)
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end
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return table.freeze({
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World = World;
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World = World,
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OnAdd = ON_ADD;
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OnRemove = ON_REMOVE;
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OnSet = ON_SET;
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OnAdd = ON_ADD,
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OnRemove = ON_REMOVE,
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OnSet = ON_SET,
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Wildcard = WILDCARD,
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w = WILDCARD,
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Rest = REST,
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