From 0f7d4fd2149d4bf45833b7695945aca317991c44 Mon Sep 17 00:00:00 2001
From: Marco Cawthorne <marco@vera-visions.com>
Date: Thu, 26 May 2022 17:42:35 -0700
Subject: [PATCH] prop_vehicle_drivable: Add spawnflag VEHSF_NOFLIP, which will
 prevent the vehicle from flipping over

---
 src/gs-entbase/shared/prop_vehicle_driveable.qc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/gs-entbase/shared/prop_vehicle_driveable.qc b/src/gs-entbase/shared/prop_vehicle_driveable.qc
index a5871756..2ca4a2cb 100644
--- a/src/gs-entbase/shared/prop_vehicle_driveable.qc
+++ b/src/gs-entbase/shared/prop_vehicle_driveable.qc
@@ -32,6 +32,8 @@ This entity was introduced in Half-Life 2 (2004).
 
 #define VEH_SKIDDING FL_USE_RELEASED
 
+#define VEHSF_NOFLIP 2048
+
 enumflags
 {
 	VEHFL_DRIVER,
@@ -579,6 +581,11 @@ prop_vehicle_driveable::RunVehiclePhysics(void)
 		PlayerUpdateFlags();
 	}
 
+	if (spawnflags & VEHSF_NOFLIP) {
+		angles[0] = bound (-45, angles[0], 45);
+		angles[2] = bound (-45, angles[2], 45);
+	}
+
 	flags &= ~VEH_SKIDDING;
 
 	angles[0] = Math_FixDelta(angles[0]);