From dff15fa678ae2c266770956bb3c9a2608f093a1c Mon Sep 17 00:00:00 2001
From: MascaraSnake <jonassauer27@gmail.com>
Date: Sun, 31 Jul 2022 15:12:59 +0200
Subject: [PATCH] Fix equation slopes overflow
---
src/p_slopes.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/p_slopes.c b/src/p_slopes.c
index 7fa51452e..6048f478d 100644
--- a/src/p_slopes.c
+++ b/src/p_slopes.c
@@ -94,10 +94,14 @@ static void ReconfigureViaVertexes (pslope_t *slope, const vector3_t v1, const v
static void ReconfigureViaConstants (pslope_t *slope, const fixed_t a, const fixed_t b, const fixed_t c, const fixed_t d)
{
fixed_t m;
+ fixed_t o = 0;
vector3_t *normal = &slope->normal;
+ if (c)
+ o = abs(c) <= FRACUNIT ? -FixedMul(d, FixedDiv(FRACUNIT, c)) : -FixedDiv(d, c);
+
// Set origin.
- FV3_Load(&slope->o, 0, 0, c ? -FixedDiv(d, c) : 0);
+ FV3_Load(&slope->o, 0, 0, o);
// Get slope's normal.
FV3_Load(normal, a, b, c);