From 591a909eeac708f1a1a26fdf03fe62553ca18806 Mon Sep 17 00:00:00 2001
From: James R <justsomejames2@gmail.com>
Date: Thu, 14 Mar 2024 00:06:52 -0700
Subject: [PATCH] Software: krangle directional lighting in 3P/4P splitscreen

---
 src/r_things.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/r_things.cpp b/src/r_things.cpp
index a4eb35b19..cb6ac9e53 100644
--- a/src/r_things.cpp
+++ b/src/r_things.cpp
@@ -2310,6 +2310,14 @@ static void R_ProjectSprite(mobj_t *thing)
 					? interp.angle + (ang >= ANGLE_180 ? -ANGLE_90 : ANGLE_90)
 					: R_PointToAngle(interp.x, interp.y));
 
+			// Krangle contrast in 3P/4P because scalelight
+			// scales differently depending on the screen
+			// width (which is halved in 3P/4P).
+			if (r_splitscreen > 1)
+			{
+				extralight *= 2;
+			}
+
 			// Less change in contrast in dark sectors
 			extralight = FixedMul(extralight, std::min(std::max(0, lightnum), LIGHTLEVELS - 1) * FRACUNIT / (LIGHTLEVELS - 1));