From 7a3dce322e7d8072bcbe895c91298fcfb08ccbb9 Mon Sep 17 00:00:00 2001 From: Dmitriy Date: Fri, 20 Feb 2026 13:49:43 +0200 Subject: [PATCH] Fix #1027 Movement is slow and clunky on gravel textures MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Materials that use a value `$surfaceprop gravel` make the marine movement slow and clunky, which feels bad especially when player plays on a server and has 70+ ping. This happens because **gravel** surface is set to have `"friction" "0.4"` instead of standard `0.8` in `reactivedrop/scripts/surfaceproperties.txt` As I remember this was an issue in `rd-area9800PP2` map ending but was fixed at some point. Now this is an issue in maps that use `blend_grass_gravel_01_lowdensity.vmt` and similar materials. Specifically the **Dark Carnival** campaign on workshop and the upcoming **Swamp Fever** campaign workshop port. `blend_grass_gravel_01_lowdensity.vmt`, and similar materials, are shipped with RD so we can either change them to not use `$surfaceprop gravel` or we can change gravel to have standard friction `0.8`. I'm suggesting the 2nd option. Note: see the comment of original Alien Swarm developers in `surfaceproperties.txt` 😺: ``` // asw no sliding, feels horrible // "friction" "0.35" ``` --- reactivedrop/scripts/surfaceproperties.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/reactivedrop/scripts/surfaceproperties.txt b/reactivedrop/scripts/surfaceproperties.txt index f125671a5..e43563983 100644 --- a/reactivedrop/scripts/surfaceproperties.txt +++ b/reactivedrop/scripts/surfaceproperties.txt @@ -562,7 +562,8 @@ "gravel" { "base" "rock" - "friction" "0.4" +// asrd no sliding, feels horrible +// "friction" "0.4" "stepleft" "Gravel.StepLeft" "stepright""Gravel.StepRight" }