From 31330b9cfe61bd6248184067d9e8c2774fd16e13 Mon Sep 17 00:00:00 2001
From: tovjemam <zbyvaj@seznam.cz>
Date: Sun, 14 Jun 2026 00:51:16 +0200
Subject: [PATCH] Make vehicle crash sounds based on velocity changes

---
 src/game/vehicle.cpp | 49 ++++++++++++++++++++++++++++----------------
 src/game/vehicle.hpp |  1 +
 2 files changed, 32 insertions(+), 18 deletions(-)

diff --git a/src/game/vehicle.cpp b/src/game/vehicle.cpp
index fc21193..2e56c2a 100644
--- a/src/game/vehicle.cpp
+++ b/src/game/vehicle.cpp
@@ -364,30 +364,43 @@ void game::Vehicle::UpdateCrash()
     }
     else
     {
-        if (crash_intensity_ > 1000.0f)
+        if (physics_)
         {
-            float volume = RandomFloat(0.9f, 1.2f);
-            float pitch = RandomFloat(1.0f, 1.3f);
+            auto bt_vel = physics_->GetBtBody().getLinearVelocity();
+            glm::vec3 velocity(bt_vel.x(), bt_vel.y(), bt_vel.z());
+            float diff = glm::distance(velocity, prev_velocity_);
+            prev_velocity_ = velocity;
 
-            if (crash_intensity_ > 12000.0f)
+            float snd_crash_intensity = glm::max(diff * 500.0f, crash_intensity_);
+
+            if (snd_crash_intensity > 1000.0f)
             {
-                volume *= 1.7f;
-                pitch *= 0.8f;
-            }
-            if (crash_intensity_ > 4000.0f)
-            {
-                volume *= 1.3f;
-                pitch *= 0.8f;
-            }
-            else
-            {
-                volume *= 0.8f;
-                pitch *= 1.2f;
+                float volume = RandomFloat(0.9f, 1.2f);
+                float pitch = RandomFloat(1.0f, 1.3f);
+
+                if (snd_crash_intensity > 12000.0f)
+                {
+                    volume *= 1.7f;
+                    pitch *= 0.8f;
+                }
+                if (snd_crash_intensity > 4000.0f)
+                {
+                    volume *= 1.3f;
+                    pitch *= 0.8f;
+                }
+                else
+                {
+                    volume *= 0.8f;
+                    pitch *= 1.2f;
+                }
+
+                PlaySound("crash", volume, pitch);
+                no_crash_frames_ = 8 + rand() % 5;
             }
 
-            PlaySound("crash", volume, pitch);
-            no_crash_frames_ = 7 + rand() % 10;
         }
+
+
     }
 
     crash_intensity_ = 0.0f;
diff --git a/src/game/vehicle.hpp b/src/game/vehicle.hpp
index e551f5e..36a729b 100644
--- a/src/game/vehicle.hpp
+++ b/src/game/vehicle.hpp
@@ -134,6 +134,7 @@ private:
 
     float crash_intensity_ = 0.0f;
     size_t no_crash_frames_ = 0;
+    glm::vec3 prev_velocity_ = glm::vec3(0.0f);
 
     std::unique_ptr<DeformGrid> deformgrid_;