From 0235dde2684e2f18a1c8cb397fa5cf9849d217fb Mon Sep 17 00:00:00 2001
From: Adriano Meligrana <68152031+ameligrana@users.noreply.github.com>
Date: Sun, 25 Jan 2026 03:17:02 +0100
Subject: [PATCH 1/7] Add bounds check to is_alive function

---
 src/world.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/world.jl b/src/world.jl
index fba3700a..4943d830 100644
--- a/src/world.jl
+++ b/src/world.jl
@@ -597,6 +597,7 @@ end
 Returns whether an [Entity](@ref) is alive.
 """
 function is_alive(world::World, entity::Entity)::Bool
+    @boundscheck checkbounds(world._entity_pool.entities, entity._id)
     return _is_alive(world._entity_pool, entity)
 end
 

From 96d2584c6c1a5e42185511294c9e73eb92f321d9 Mon Sep 17 00:00:00 2001
From: Adriano Meligrana <68152031+ameligrana@users.noreply.github.com>
Date: Sun, 25 Jan 2026 03:22:21 +0100
Subject: [PATCH 2/7] Optimize _is_alive function with @inbounds macro

---
 src/pool.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pool.jl b/src/pool.jl
index 34b5aa7f..fa735689 100644
--- a/src/pool.jl
+++ b/src/pool.jl
@@ -42,7 +42,7 @@ function _recycle(p::_EntityPool, e::Entity)
 end
 
 function _is_alive(p::_EntityPool, e::Entity)::Bool
-    @inbounds return e._gen == p.entities[e._id]._gen
+    return @inbounds e._gen == p.entities[e._id]._gen
 end
 
 function _reset!(p::_EntityPool)

From e3d55dedcd84fec104a6e2b948942a35839165df Mon Sep 17 00:00:00 2001
From: Adriano Meligrana <68152031+ameligrana@users.noreply.github.com>
Date: Sun, 25 Jan 2026 03:24:13 +0100
Subject: [PATCH 3/7] Add bounds check for entity ID in is_alive function

---
 src/world.jl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/world.jl b/src/world.jl
index 4943d830..ab3e5445 100644
--- a/src/world.jl
+++ b/src/world.jl
@@ -597,7 +597,9 @@ end
 Returns whether an [Entity](@ref) is alive.
 """
 function is_alive(world::World, entity::Entity)::Bool
-    @boundscheck checkbounds(world._entity_pool.entities, entity._id)
+    if entity._id > length(world._entity_pool.entities)
+        return false
+    end
     return _is_alive(world._entity_pool, entity)
 end
 

From e1c0ad9ee65aa8ade4838cca51c6d546bc6dd212 Mon Sep 17 00:00:00 2001
From: Adriano Meligrana <68152031+ameligrana@users.noreply.github.com>
Date: Sun, 25 Jan 2026 03:51:04 +0100
Subject: [PATCH 4/7] Update world.jl

---
 src/world.jl | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/world.jl b/src/world.jl
index ab3e5445..fba3700a 100644
--- a/src/world.jl
+++ b/src/world.jl
@@ -597,9 +597,6 @@ end
 Returns whether an [Entity](@ref) is alive.
 """
 function is_alive(world::World, entity::Entity)::Bool
-    if entity._id > length(world._entity_pool.entities)
-        return false
-    end
     return _is_alive(world._entity_pool, entity)
 end
 

From 61efd5d4b5f1dda62a1181b91a4ab18e8f5186d3 Mon Sep 17 00:00:00 2001
From: Adriano Meligrana <68152031+ameligrana@users.noreply.github.com>
Date: Sun, 25 Jan 2026 03:51:38 +0100
Subject: [PATCH 5/7] Update pool.jl

---
 src/pool.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pool.jl b/src/pool.jl
index fa735689..bf5003f5 100644
--- a/src/pool.jl
+++ b/src/pool.jl
@@ -42,7 +42,7 @@ function _recycle(p::_EntityPool, e::Entity)
 end
 
 function _is_alive(p::_EntityPool, e::Entity)::Bool
-    return @inbounds e._gen == p.entities[e._id]._gen
+    return e._gen == p.entities[e._id]._gen
 end
 
 function _reset!(p::_EntityPool)

From d95dab9009f07f3c3696a0397a50aa218187e3d7 Mon Sep 17 00:00:00 2001
From: Adriano Meligrana <68152031+ameligrana@users.noreply.github.com>
Date: Sun, 25 Jan 2026 04:01:40 +0100
Subject: [PATCH 6/7] Update pool.jl

---
 src/pool.jl | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/pool.jl b/src/pool.jl
index bf5003f5..ebf46bf4 100644
--- a/src/pool.jl
+++ b/src/pool.jl
@@ -42,7 +42,10 @@ function _recycle(p::_EntityPool, e::Entity)
 end
 
 function _is_alive(p::_EntityPool, e::Entity)::Bool
-    return e._gen == p.entities[e._id]._gen
+    if e._id > length(p.entities)
+        return false
+    end
+    return @inbounds e._gen == p.entities[e._id]._gen
 end
 
 function _reset!(p::_EntityPool)

From 1c9b74a67a18f223d51ebe11354b060029ce672a Mon Sep 17 00:00:00 2001
From: Adriano Meligrana <68152031+ameligrana@users.noreply.github.com>
Date: Sun, 25 Jan 2026 12:58:59 +0100
Subject: [PATCH 7/7] remove check

---
 src/pool.jl | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/pool.jl b/src/pool.jl
index ebf46bf4..bf5003f5 100644
--- a/src/pool.jl
+++ b/src/pool.jl
@@ -42,10 +42,7 @@ function _recycle(p::_EntityPool, e::Entity)
 end
 
 function _is_alive(p::_EntityPool, e::Entity)::Bool
-    if e._id > length(p.entities)
-        return false
-    end
-    return @inbounds e._gen == p.entities[e._id]._gen
+    return e._gen == p.entities[e._id]._gen
 end
 
 function _reset!(p::_EntityPool)