Add Big Mode (#515)

I even halved the gravity :)

parts/modes/big_h.lua

@@ -0,0 +1,28 @@
+return{
+    env={
+        noTele=true,
+        mindas=7,minarr=1,minsdarr=1,
+        sequence="bagES",
+        hook_drop=require'parts.eventsets.bigWallGen'.hook_drop,
+		eventSet='big_h',
+        bg='cubes',bgm='push',
+    },
+    score=function(P)return{math.min(P.modeData.maxCombo,100),P.stat.time}end,
+    scoreDisp=function(D)return D[1].." Combo   "..STRING.time(D[2])end,
+    comp=function(a,b)return a[1]>b[1]or a[1]==b[1]and a[2]<b[2]end,
+    getRank=function(P)
+        local L=P.stat.row
+        if L>=200 then
+            local T=P.stat.time
+            return
+            T<=160 and 5 or
+            T<=280 and 4 or
+            3
+        else
+            return
+            L>=100 and 2 or
+            L>=50 and 1 or
+            L>=10 and 0
+        end
+    end,
+}