implemented pure Entity, varargs update

Project.toml

@@ -1,7 +1,7 @@
 name = "Overseer"
 uuid = "1ada24be-c16d-4464-9f61-27c2e0f16645"
 authors = ["louisponet <[email protected]>"]
-version = "0.2.9"
+version = "0.2.10"
 
 [deps]
 MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"

src/entity.jl

@@ -43,6 +43,8 @@ end
 
 Entity(e::Entity) = e
 
+Base.@propagate_inbounds Entity(c::AbstractComponent, i::Int) = Entity(c.indices.packed[i])
+
 Base.iterate(e::Entity, state=1) = state > 1 ? nothing : (e, state+1)
 
 const EMPTY_ENTITY = Entity(0)
@@ -184,7 +186,7 @@ end
 @inline Base.@propagate_inbounds Base.getindex(e::EntityState, i::Int) = e.components[i][e.e]
 
 function entity(c::AbstractComponent, i::Integer)
-    return EntityState(Entity(c.indices.packed[i]), c)
+    return EntityState(Entity(c, i), c)
 end
 
 """

src/ledger.jl

@@ -85,7 +85,7 @@ function Base.empty!(m::AbstractLedger)
 end
 
 function Base.getindex(m::AbstractLedger, ::Type{T}) where {T}
-    return components(m)[T]::component_type(T)
+    return get!(components(m), T, component_type(T)())
 end
 
 Base.copy(m::AbstractLedger) = Ledger(copy(entities(m)),
@@ -142,9 +142,7 @@ end
 
 function ensure_component!(m::AbstractLedger, c::Type{T}) where {T}
     if !(c in m)
-        m_comps = components(m)
-        comp = component_type(c)()
-        m_comps[T] = comp
+        components(m)[T] = component_type(c)()
     end
 end
 

src/system.jl

@@ -52,16 +52,16 @@ prepare(s::Stage, l::AbstractLedger) = prepare(s.steps, l)
 
 prepare(::System, ::AbstractLedger) = nothing
 
-function update(stage::Stage, l::AbstractLedger)
+function update(stage::Stage, l::AbstractLedger, args...)
     # Steps in a stage get executed in sequence, but if
     # a step is a vector they are threaded
     for step in stage.steps
         if step isa Vector
             Threads.@threads for t in step
-                update(t, l)
+                update(t, l, args...)
             end
         else
-            update(step, l)
+            update(step, l, args...)
         end
     end
 end