Add archetypes method (#89)

* Add method

* Remove unnecessary shadowed variable

benches/query.luau

@@ -40,11 +40,6 @@ do
 				end
 			end)
 
-			BENCH("1 component, 7 tags", function()
-			    for _ in world:query(H):with(G, F, E, D, C, B, A) do
-				end
-			end)
-
 			local e = world:entity()
 			world:set(e, A, true)
 			world:set(e, B, true)

docs/api/jecs.md

@@ -0,0 +1,30 @@
+# Jecs
+
+Jecs. Just an Entity Component System.
+
+## Properties
+
+### World
+```luau
+jecs.World: World
+```
+
+### Wildcard
+
+### z<>
+
+## Functions
+
+### pair()
+```luau
+function jecs.pair(
+    first: Entity, -- The first element of the pair, referred to as the relationship of the relationship pair.
+    object: Entity, -- The second element of the pair, referred to as the target of the relationship pair.
+): number -- Returns the Id with those two elements
+
+```
+::: info
+
+Note that while relationship pairs can be used as components, meaning you can add data with it as an ID, however they cannot be used as entities. Meaning you cannot add components to a pair as the source of a binding.
+
+:::

docs/api/world.md

@@ -1,11 +1,11 @@
-# World
+# Query
 
 A World contains entities which have components. The World is queryable and can be used to get entities with a specific set of components.
 
 ## Functions
 
 ### new()
-```lua
+```luau
 function World.new(): World
 ```
 Creates a new world.
@@ -27,7 +27,7 @@ const world = new World();
 
 ## entity()
 ```luau
-function World:entity(): Entity
+function World:entity(): Entity -- The new entit.
 ```
 Creates a new entity.
 
@@ -42,11 +42,12 @@ local entity = world:entity()
 const entity = world.entity();
 ```
 
-:::
+::
+:
 
-### component()`
+### component()
 ```luau
-function World:component<T>(): Entity<T>
+function World:component<T>(): Entity<T> -- The new componen.
 ```
 Creates a new component.
 
@@ -60,11 +61,72 @@ local Health = world:component() :: jecs.Entity<number>
 ```ts [typescript]
 const Health = world.component<number>();
 ```
-
 :::
 
 ::: info
 You should use this when creating components.
 
 For example, a Health type should be created using this.
 :::
+
+### get()
+```luau
+function World:get(
+    entity: Entity, -- The entity
+    ...: Entity<T> -- The types to fetch
+): ... -- Returns the component data in the same order they were passed in
+```
+Returns the data for each provided type for the corresponding entity.
+
+:::
+
+### add()
+```luau
+function World:add(
+    entity: Entity, -- The entity
+    id: Entity<T> -- The component ID to add
+): ()
+```
+Adds a component ID to the entity.
+
+This operation adds a single (component) id to an entity.
+
+::: info
+This function is idempotent, meaning if the entity already has the id, this operation will have no side effects.
+:::
+
+
+### set()
+```luau
+function World:set(
+    entity: Entity, -- The entity
+    id: Entity<T>, -- The component ID to set
+    data: T -- The data of the component's type
+): ()
+```
+Adds or changes the entity's component.
+
+### query()
+```luau
+function World:query(
+    ...: Entity<T> -- The component IDs to query with. Entities that satifies the conditions will be returned
+): Query<...Entity<T>> -- Returns the Query which gets the entity and their corresponding data when iterated
+```
+Creates a [`query`](query) with the given component IDs.
+
+Example:
+::: code-group
+
+```luau [luau]
+for id, position, velocity in world:query(Position, Velocity) do
+	-- Do something
+end
+```
+
+```ts [typescript]
+for (const [id, position, velocity] of world.query(Position, Velocity) {
+    // Do something
+}
+```
+
+:::

docs/index.md

@@ -14,7 +14,7 @@ hero:
       link: /overview/get-started.md
     - theme: alt
       text: API References
-      link: /api/
+      link: /api/jecs.md
 
 features:
   - title: Stupidly Fast

src/init.luau

@@ -136,7 +136,7 @@ local function STRIP_GENERATION(e: i53): i24
 end
 
 local function ECS_PAIR(pred: i53, obj: i53): i53
-	return ECS_COMBINE(ECS_ENTITY_T_LO(obj), ECS_ENTITY_T_LO(pred)) + FLAGS_ADD(--[[isPair]] true) :: i53
+    return ECS_COMBINE(ECS_ENTITY_T_LO(obj), ECS_ENTITY_T_LO(pred)) + FLAGS_ADD(--[[isPair]] true) :: i53
 end
 
 local ERROR_ENTITY_NOT_ALIVE = "Entity is not alive"
@@ -897,8 +897,8 @@ do
 
     local function world_query_with(query, ...)
         local ids = { ... }
-        for i = #compatibleArchetypes, 1, -1 do
- 			local archetype = compatibleArchetypes[i]
+        for i = #compatible_archetypes, 1, -1 do
+ 			local archetype = compatible_archetypes[i]
  			local records = archetype.records
  			local shouldRemove = false
 
@@ -910,11 +910,11 @@ do
  			end
 
  			if shouldRemove then
- 			    table.remove(compatibleArchetypes, i)
+ 			    table.remove(compatible_archetypes, i)
  			end
         end
 
-        if #compatibleArchetypes == 0 then
+        if #compatible_archetypes == 0 then
             return EmptyQuery
         end
 
@@ -928,7 +928,7 @@ do
     	end
 
     	local indices = {}
-    	local compatibleArchetypes = {}
+        compatible_archetypes = {}
     	local length = 0
 
         local components = { ... } :: any
@@ -970,11 +970,10 @@ do
     		end
 
     		length += 1
-    		compatibleArchetypes[length] = compatibleArchetype
+    		compatible_archetypes[length] = compatibleArchetype
     		indices[length] = records
     	end
 
-        compatible_archetypes = compatibleArchetypes
         column_indices = indices
         ids = components
 
@@ -997,6 +996,9 @@ do
             with = world_query_with,
             without = world_query_without,
             replace = world_query_replace,
+            archetypes = function()
+                return compatible_archetypes
+            end
         } :: any
 
         setmetatable(it, it)
@@ -1189,13 +1191,11 @@ return {
 	OnAdd = EcsOnAdd :: Entity,
 	OnRemove = EcsOnRemove :: Entity,
 	OnSet = EcsOnSet :: Entity,
-
-	Wildcard = EcsWildcard :: Entity,
-	w = EcsWildcard :: Entity,
 	ChildOf = EcsChildOf,
 	Component = EcsComponent,
-
 	Rest = EcsRest,
+	Wildcard = EcsWildcard :: Entity,
+	w = EcsWildcard :: Entity,
 
 	pair = (ECS_PAIR :: any) :: <R, T>(pred: Entity, obj: Entity) -> number,