From 812d32e70cb17b59805129b053318f5cab4120a1 Mon Sep 17 00:00:00 2001
From: Kistaro Windrider <kistaro@gmail.com>
Date: Sun, 1 Jun 2025 20:58:12 -0700
Subject: [PATCH] micro-optimizations

---
 collisiontest.p8 | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/collisiontest.p8 b/collisiontest.p8
index 381e5aa..b65c539 100644
--- a/collisiontest.p8
+++ b/collisiontest.p8
@@ -22,28 +22,26 @@ function collides()
 	
 	-- x
 	if ldx==0 then
-		local lx=lx0 -- which ==lx1
-		if (lx<bx0 or lx>=bx1) return nil
+		if (lx0<bx0 or lx0>bx1) return
 	else
  	local tx0=(bx0-lx0)/ldx
  	local tx1=(bx1-lx0)/ldx
- 	
- 	tmin=max(tmin,min(tx0,tx1))
- 	tmax=min(tmax,max(tx0,tx1))
+ 	if (tx0 > tx1) tx0,tx1=tx1,tx0
+ 	if (tmin < tx0) tmin=tx0
+ 	if (tmax > tx1) tmax=tx1
  end
  
 	if ldy==0 then
-		local ly=ly0 -- which ==ly1
-		if (ly<by0 or ly>=by1) return nil
+		if (ly0<by0 or ly0>by1) return
 	else
  	local ty0=(by0-ly0)/ldy
  	local ty1=(by1-ly0)/ldy
- 	
- 	tmin=max(tmin,min(ty0,ty1))
- 	tmax=min(tmax,max(ty0,ty1))
+ 	if (ty0 > ty1) ty0,ty1=ty1,ty0
+ 	if (tmin < ty0) tmin=ty0
+ 	if (tmax > ty1) tmax=ty1
  end 
  
- if (tmax < tmin) return nil
+ if (tmax < tmin) return
  return tmin,tmax
 end