From ae3858a6f0c154ad5bf34410b4fb1cdf45ce1c8e Mon Sep 17 00:00:00 2001
From: MrZ626 <1046101471@qq.com>
Date: Thu, 12 Nov 2020 12:59:46 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E8=83=8C=E6=99=AF=EF=BC=9ATunnel?=
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---
 modes/GM.lua                 |  2 +-
 parts/backgrounds/tunnel.lua | 43 ++++++++++++++++++++++++++++++++++++
 parts/scenes/customGame.lua  |  2 +-
 3 files changed, 45 insertions(+), 2 deletions(-)
 create mode 100644 parts/backgrounds/tunnel.lua

diff --git a/modes/GM.lua b/modes/GM.lua
index 191222c3..ecf180b7 100644
--- a/modes/GM.lua
+++ b/modes/GM.lua
@@ -30,7 +30,7 @@ return{
 				return true
 			end
 		end,
-		bg="welcome",bgm="far",
+		bg="tunnel",bgm="far",
 	},
 	slowMark=true,
 	load=function()
diff --git a/parts/backgrounds/tunnel.lua b/parts/backgrounds/tunnel.lua
new file mode 100644
index 00000000..ef2e4859
--- /dev/null
+++ b/parts/backgrounds/tunnel.lua
@@ -0,0 +1,43 @@
+--Cool Tunnel
+local gc=love.graphics
+local rnd=math.random
+local ins,rem=table.insert,table.remove
+local back={}
+
+local ring
+local t
+local W,H
+function back.init()
+	ring={}
+	t=26
+	back.resize(SCR.w,SCR.h)
+end
+function back.resize(w,h)
+	W,H=w,h
+end
+function back.update(dt)
+	t=t-1
+	if t==0 then
+		t=rnd(26,62)
+		ins(ring,0)
+	end
+	for i=#ring,1,-1 do
+		ring[i]=ring[i]+dt
+		if ring[i]>3.55 then
+			rem(ring,i)
+		end
+	end
+end
+function back.draw()
+	gc.clear(.1,.1,.1)
+	gc.setColor(.4,.4,.4)
+	for i=1,#ring do
+		local r=ring[i]^2/12
+		gc.setLineWidth(30-15/(r+.5))
+		gc.rectangle("line",640-W*r/2,360-H*r/2,W*r,H*r)
+	end
+end
+function back.discard()
+	ring=nil
+end
+return back
\ No newline at end of file
diff --git a/parts/scenes/customGame.lua b/parts/scenes/customGame.lua
index 9c6039d3..adcd72b1 100644
--- a/parts/scenes/customGame.lua
+++ b/parts/scenes/customGame.lua
@@ -166,7 +166,7 @@ WIDGET.init("customGame",{
 	--Else
 	WIDGET.newSelector({name="bg",
 		x=1070,	y=150,w=250,color="yellow",
-		list={"none","grey","glow","rgb","flink","wing","fan","badapple","welcome","aura","bg1","bg2","rainbow","rainbow2","lightning","lightning2","matrix","space"},
+		list={"none","grey","glow","rgb","flink","wing","fan","badapple","welcome","aura","bg1","bg2","rainbow","rainbow2","tunnel","lightning","lightning2","matrix","space"},
 		disp=WIDGET.lnk.CUSval("bg"),
 		code=function(i)CUSTOMENV.bg=i BG.set(i)end
 	}),