diff --git a/convex/constants.ts b/convex/constants.ts
index d1ff30d..7595257 100644
--- a/convex/constants.ts
+++ b/convex/constants.ts
@@ -21,13 +21,6 @@ export const AI_MODELS = {
   },
 } as const;
 
-export enum ActionType {
-  PlayerShoot = "player-shoot",
-  PlayerWalk = "player-walk",
-  ZombieSpawn = "zombie-spawn",
-  ZombieStep = "zombie-step",
-}
-
 export type ModelSlug = (typeof AI_MODELS)[keyof typeof AI_MODELS]["slug"];
 
 export const AI_MODEL_SLUGS = Object.keys(AI_MODELS) as ModelSlug[];
diff --git a/convex/helpers.ts b/convex/helpers.ts
index bbca6c2..78fb0fa 100644
--- a/convex/helpers.ts
+++ b/convex/helpers.ts
@@ -1,14 +1,8 @@
 import { v } from "convex/values";
-import { ActionType } from "./constants";
+import { ActionType } from "@/simulator/Action";
 
 export const multiplayerGameActionValidator = v.object({
-  // type: v.union(...Object.values(ActionType).map((t) => v.literal(t))),
-  type: v.union(
-    v.literal("player-shoot"),
-    v.literal("player-walk"),
-    v.literal("zombie-spawn"),
-    v.literal("zombie-step"),
-  ),
+  type: v.union(...Object.values(ActionType).map((t) => v.literal(t))),
   token: v.string(),
   position: v.optional(
     v.object({
diff --git a/convex/multiplayerGames.ts b/convex/multiplayerGames.ts
index d16f488..173c701 100644
--- a/convex/multiplayerGames.ts
+++ b/convex/multiplayerGames.ts
@@ -9,8 +9,9 @@ import { type Infer, v } from "convex/values";
 import { api, internal } from "./_generated/api";
 import { Doc } from "./_generated/dataModel";
 import { internalAction, internalMutation, query } from "./_generated/server";
-import { ActionType, ModelSlug } from "./constants";
+import { ModelSlug } from "./constants";
 import { multiplayerGameActionValidator } from "./helpers";
+import { ActionType } from "@/simulator/Action";
 
 const TURN_DELAY = 500;
 
diff --git a/simulator/Action.ts b/simulator/Action.ts
new file mode 100644
index 0000000..685f9c4
--- /dev/null
+++ b/simulator/Action.ts
@@ -0,0 +1,6 @@
+export enum ActionType {
+  PlayerShoot = "player-shoot",
+  PlayerWalk = "player-walk",
+  ZombieSpawn = "zombie-spawn",
+  ZombieStep = "zombie-step",
+}