添加一个禁同列消四的模式

parts/modes/techrash_u.lua

@@ -0,0 +1,20 @@
+return{
+    color=COLOR.lYellow,
+    env={
+        drop=60,lock=60,
+        freshLimit=15,
+        ospin=false,
+        eventSet='techrash_u',
+        bg='matrix',bgm='vapor',
+    },
+    getRank=function(P)
+        local T=P.stat.clear[7][4]
+        return
+        T>=20 and 5 or
+        T>=16 and 4 or
+        T>=12 and 3 or
+        T==8 and 2 or
+        T>=4 and 1 or
+        T>=2 and 0
+    end,
+}