diff --git a/play/assets/tmpGame/script/utils.js b/play/assets/tmpGame/script/utils.js
index 36e92fb7b834658a3c44a30063e2c033bc04e182..55f480071e49b4191acb9cdbfab077d2a6d4db87 100644
--- a/play/assets/tmpGame/script/utils.js
+++ b/play/assets/tmpGame/script/utils.js
@@ -52,6 +52,10 @@ export function RandomInt(a, b = 0) {
     return Math.floor(Math.random() * (max - min) + min);
 }
 
+export function Between(a, b, c) {
+    return [a, b, c].sort((a, b) => a - b)[1];
+}
+
 export function randomSortByArr(arr) {
     const newArr = [];
     const tmpArr = arr.concat();