From de36f73df579cd071f57d79de1c85dd7106f4999 Mon Sep 17 00:00:00 2001
From: Eric McDaniel <eric.g.mcdaniel@gmail.com>
Date: Thu, 11 Jun 2020 12:49:43 -0400
Subject: [PATCH] fix: restore destroy op (#41)

---
 packages/ecs/src/world.ts | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/packages/ecs/src/world.ts b/packages/ecs/src/world.ts
index 2d368b8c..5cf9e4fb 100644
--- a/packages/ecs/src/world.ts
+++ b/packages/ecs/src/world.ts
@@ -36,8 +36,9 @@ enum WorldOpType {
 
 type CreateOp = [WorldOpType.Create, number, ReadonlyArray<Component>, number?]
 type InsertOp = [WorldOpType.Insert, number, ReadonlyArray<Component>]
+type DestroyOp = [WorldOpType.Destroy, number]
 
-type WorldOp = CreateOp | InsertOp
+type WorldOp = CreateOp | InsertOp | DestroyOp
 
 export const createWorld = <T>(systems: System<T>[]): World<T> => {
   const ops: WorldOp[] = []
@@ -79,6 +80,9 @@ export const createWorld = <T>(systems: System<T>[]): World<T> => {
           storage.insert(op[1], ...(op[2] as Component[]))
           break
         }
+        case WorldOpType.Destroy:
+          destroyed.add(op[1])
+          break
         default:
           break
       }
@@ -120,7 +124,12 @@ export const createWorld = <T>(systems: System<T>[]): World<T> => {
   }
 
   function destroy(entity: number) {
-    destroyed.add(entity)
+    const op = opPool.retain() as DestroyOp
+
+    op[0] = WorldOpType.Destroy
+    op[1] = entity
+
+    ops.push(op)
   }
 
   function isEphemeral(entity: number) {