From d4a67acc9bad02e2dd69a98b6af64d19ac799b88 Mon Sep 17 00:00:00 2001
From: Kistaro Windrider <kistaro@gmail.com>
Date: Sat, 5 Aug 2023 16:39:06 -0700
Subject: [PATCH] make marching ants trailer effect optional

This makes trcolor = bgcolor work even when bgcolor is nil. trcolor=nil always works to produce this behavior.
---
 panel_extreme.p8 | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/panel_extreme.p8 b/panel_extreme.p8
index 38d9b13..c56ca5a 100644
--- a/panel_extreme.p8
+++ b/panel_extreme.p8
@@ -378,7 +378,7 @@ ants = {
  -- bgcolor=0,  --nil: transparent
  ldcolor=7,
  fgcolor=6,
- trcolor=5,
+ -- trcolor=5,  --nil: no trailer
  
  speed=2/60,
  offset=0,
@@ -412,8 +412,8 @@ function ants:draw()
 			rectfill(x,0,x,h,c)
 		end
 	end
-	if p < 1 then
-		local c = self.trcolor
+ local c = self.trcolor
+	if p < 1 and c then
 		for x = x0-1+s,w,s do
 			rectfill(x,0,x,h,c)
 		end