再优化玩家的cancel方法

parts/player/player.lua

@@ -797,21 +797,19 @@ end
 function Player.cancel(P,N)--Cancel Garbage
 	local off=0--Lines offseted
 	local bf=P.atkBuffer
-	for _, A in ipairs(bf) do
-		if bf.sum <= 0 then break end
+	for i=1,#bf do
+		if bf.sum==0 or N==0 then break end
+		local A=bf[i]
 		if not A.sent then
 			local O=min(A.amount,N)--Cur Offset
-			off, bf.sum = off + O, bf.sum - O
-			if N >= A.amount then
-				A.sent, A.time = true, 0
-			else
+			if N<A.amount then
 				A.amount=A.amount-O
-			end
-			if N <= A.amount then
-				break
 			else
-				N = N - O
+				A.sent,A.time=true,0
 			end
+			off=off+O
+			bf.sum=bf.sum-O
+			N=N-O
 		end
 	end
 	return off