diff --git a/src/assets/cache.hpp b/src/assets/cache.hpp
index 2a705ce..452dd99 100644
--- a/src/assets/cache.hpp
+++ b/src/assets/cache.hpp
@@ -13,6 +13,8 @@
 #include "gfx/font.hpp"
 #endif
 
+#include <iostream>
+
 namespace assets
 {
 
@@ -33,6 +35,7 @@ public:
             }
         }
 
+        std::cout << "loading " << key << "..." << std::endl;
         PtrType obj = Load(key);
         cache_[key] = obj; // Cache the loaded object
         return obj;
diff --git a/src/assets/model.cpp b/src/assets/model.cpp
index 93601a2..c7af6af 100644
--- a/src/assets/model.cpp
+++ b/src/assets/model.cpp
@@ -180,13 +180,16 @@ std::shared_ptr<const assets::Model> assets::Model::LoadFromFile(const std::stri
             iss >> com.x >> com.y >> com.z;
             model->col_offset_ = com;
         }
+        else if (command == "param")
+        {
+            std::string key, val;
+            iss >> key >> val;
+            model->params_[key] = val;
+        }
         else
         {
             throw std::runtime_error("Unknown command in model file: " + command);
         }
-        
-
-        // TODO: skeleton
     });
     
     CLIENT_ONLY(
@@ -215,3 +218,29 @@ std::shared_ptr<const assets::Model> assets::Model::LoadFromFile(const std::stri
 
     return model;
 }
+
+const std::string* assets::Model::GetParam(const std::string& key) const
+{
+    auto it = params_.find(key);
+    if (it == params_.end())
+        return nullptr;
+
+    return &it->second;
+}
+
+bool assets::Model::GetParamFloat(const std::string& key, float& out) const
+{
+    auto str_val = GetParam(key);
+    if (!str_val)
+        return false;
+
+    std::string str = *str_val;
+    
+    auto dashpos = str.find(',');
+    if (dashpos != std::string::npos)
+        str[dashpos] = '.';
+
+    out = std::strtof(str.c_str(), nullptr);
+
+    return true;
+}
diff --git a/src/assets/model.hpp b/src/assets/model.hpp
index a6d0fd5..d41e24a 100644
--- a/src/assets/model.hpp
+++ b/src/assets/model.hpp
@@ -34,7 +34,6 @@ namespace assets
 //     };
 // };
 
-
 class Model
 {
 public:
@@ -51,6 +50,9 @@ public:
     CLIENT_ONLY(const std::shared_ptr<const Mesh>& GetMesh() const { return mesh_; })
     const AABB3& GetAABB() const { return aabb_; }
 
+    const std::string* GetParam(const std::string& key) const;
+    bool GetParamFloat(const std::string& key, float& out) const;
+
 private:
     std::string name_;
     glm::vec3 col_offset_ = glm::vec3(0.0f);
@@ -63,6 +65,8 @@ private:
     CLIENT_ONLY(std::shared_ptr<const Mesh> mesh_;);
     AABB3 aabb_;
 
+    std::map<std::string, std::string> params_;
+
 };
 
 }
\ No newline at end of file
diff --git a/src/audio/sound_source.cpp b/src/audio/sound_source.cpp
index 515b82c..47d5ae5 100644
--- a/src/audio/sound_source.cpp
+++ b/src/audio/sound_source.cpp
@@ -3,6 +3,8 @@
 #include <AL/al.h>
 #include <AL/alc.h>
 
+#include <iostream>
+
 audio::SoundSource::SoundSource(Player* player, std::shared_ptr<const Sound> sound)
     : Super(sound->GetCategoryName(), player), sound_(std::move(sound))
 {
@@ -26,6 +28,7 @@ void audio::SoundSource::SetPitch(float pitch)
 void audio::SoundSource::SetVolume(float volume)
 {
     Super::SetSourceVolume(sound_->GetVolume() * volume);
+    //std::cout << "src volume " << sound_->GetVolume() * volume << std::endl;
 }
 
 void audio::SoundSource::Update()
diff --git a/src/client/app.cpp b/src/client/app.cpp
index 1efc53e..24ff285 100644
--- a/src/client/app.cpp
+++ b/src/client/app.cpp
@@ -12,9 +12,9 @@ App::App()
 	std::cout << "Initializing App..." << std::endl;
 
 #ifndef EMSCRIPTEN
-	audiomaster_.SetMasterVolume(0.2f);
+	audiomaster_.SetMasterVolume(1.0f);
 #else
-	audiomaster_.SetMasterVolume(0.8f);
+	audiomaster_.SetMasterVolume(2.0f);
 #endif
 
 	font_ = assets::CacheManager::GetFont("data/comic32.font");
diff --git a/src/client/main.cpp b/src/client/main.cpp
index 30d517c..79586be 100644
--- a/src/client/main.cpp
+++ b/src/client/main.cpp
@@ -73,9 +73,9 @@ static void InitSDL()
 
 #ifndef PG_GLES
 static void APIENTRY GLDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void* userParam) {
-    //if (severity == 0x826b)
-    //    return;
-    //
+    if (severity == 0x826b)
+        return;
+    
     ////std::cout << message << std::endl;
     fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n",
         (type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : ""),
diff --git a/src/collision/object_info.hpp b/src/collision/object_info.hpp
new file mode 100644
index 0000000..36fbaf1
--- /dev/null
+++ b/src/collision/object_info.hpp
@@ -0,0 +1,49 @@
+#pragma once
+
+#include <cstdint>
+#include <btBulletDynamicsCommon.h>
+
+namespace collision
+{
+
+enum ObjectType : int
+{
+    OT_UNDEFINED,
+    OT_MAP_OBJECT,
+    OT_ENTITY,
+};
+
+using ObjectFlags = int;
+
+enum ObjectFlag : ObjectFlags
+{
+    OF_DESTRUCTIBLE = 0x01,
+    OF_NOTIFY_CONTACT = 0x02,
+};
+
+class ObjectCallback
+{
+public:
+    ObjectCallback() = default;
+
+    virtual void OnContact(float impulse) {}
+
+    virtual ~ObjectCallback() = default;
+};
+
+inline void SetObjectInfo(btCollisionObject* obj, ObjectType type, ObjectFlags flags, ObjectCallback* callback)
+{
+    obj->setUserIndex(static_cast<int>(type));
+    obj->setUserIndex2(static_cast<int>(flags));
+    obj->setUserPointer(callback);
+}
+
+inline void GetObjectInfo(const btCollisionObject* obj, ObjectType& type, ObjectFlags& flags, ObjectCallback*& callback)
+{
+    type = static_cast<ObjectType>(obj->getUserIndex());
+    flags = static_cast<ObjectFlags>(obj->getUserIndex2());
+    callback = static_cast<ObjectCallback*>(obj->getUserPointer());
+}
+
+
+}
\ No newline at end of file
diff --git a/src/collision/object_type.hpp b/src/collision/object_type.hpp
deleted file mode 100644
index 4cd35e9..0000000
--- a/src/collision/object_type.hpp
+++ /dev/null
@@ -1,16 +0,0 @@
-#pragma once
-
-namespace collision
-{
-
-enum ObjectType
-{
-    OT_UNDEFINED = 0,
-    OT_MAP_STATIC = 1,
-    OT_MAP_DESTRUCTIBLE = 2,
-
-
-};
-
-
-}
\ No newline at end of file
diff --git a/src/game/destroyed_object.cpp b/src/game/destroyed_object.cpp
index 75e5b38..c302de6 100644
--- a/src/game/destroyed_object.cpp
+++ b/src/game/destroyed_object.cpp
@@ -1,11 +1,19 @@
 #include "destroyed_object.hpp"
+#include "utils/random.hpp"
 
 game::DestroyedObject::DestroyedObject(World& world, std::unique_ptr<MapObjectCollision> col)
     : Super(world, col->GetModel()->GetName()), col_(std::move(col))
 {
-    // remove after 30s
-    Schedule(30000, [this]()
+    auto destr_snd_str = col_->GetModel()->GetParam("destr_snd");
+    if (destr_snd_str)
     {
+        Schedule(1, [this, destr_snd_str] {
+            PlaySound(*destr_snd_str, RandomFloat(0.8f, 1.2f), RandomFloat(0.8f, 1.2f));
+        });
+    }
+
+    // remove after 30s
+    Schedule(30000, [this] {
        Remove();
     });
 }
diff --git a/src/game/drivable_vehicle.cpp b/src/game/drivable_vehicle.cpp
index 5fb0aee..31e652b 100644
--- a/src/game/drivable_vehicle.cpp
+++ b/src/game/drivable_vehicle.cpp
@@ -1,5 +1,6 @@
 #include "drivable_vehicle.hpp"
 #include "player_character.hpp"
+#include "utils/random.hpp"
 
 game::DrivableVehicle::DrivableVehicle(World& world, std::string model_name, const glm::vec3& color)
     : Vehicle(world, std::move(model_name), color)
@@ -13,6 +14,8 @@ void game::DrivableVehicle::Use(PlayerCharacter& character, uint32_t target_id)
         return;
 
     character.SetVehicle(this, target_id); // seat idx is same as target_id
+    PlaySound("cardoor", 1.0f, RandomFloat(0.9f, 1.1f));
+
 }
 
 bool game::DrivableVehicle::SetPassenger(uint32_t seat_idx, ControllableCharacter* character)
diff --git a/src/game/entity.cpp b/src/game/entity.cpp
index 193ec65..2aef0c7 100644
--- a/src/game/entity.cpp
+++ b/src/game/entity.cpp
@@ -52,6 +52,14 @@ void game::Entity::Attach(net::EntNum parentnum)
     SendAttachMsg();
 }
 
+void game::Entity::PlaySound(const std::string& name, float volume, float pitch)
+{
+    auto msg = BeginEntMsg(net::EMSG_PLAYSOUND);
+    msg.Write(net::SoundName(name));
+    msg.Write<net::SoundVolumeQ>(volume);
+    msg.Write<net::SoundPitchQ>(pitch);
+}
+
 void game::Entity::WriteNametag(net::OutMessage& msg) const
 {
     msg.Write(net::NameTag{nametag_});
diff --git a/src/game/entity.hpp b/src/game/entity.hpp
index 3ea5df6..c5c4821 100644
--- a/src/game/entity.hpp
+++ b/src/game/entity.hpp
@@ -6,6 +6,7 @@
 #include "transform_node.hpp"
 #include "utils/defs.hpp"
 #include "utils/scheduler.hpp"
+#include "collision/object_info.hpp"
 
 namespace game
 {
@@ -13,7 +14,7 @@ namespace game
 class World;
 class Player;
 
-class Entity : public net::MsgProducer, public Scheduler
+class Entity : public net::MsgProducer, public Scheduler, public collision::ObjectCallback
 {
 public:
     Entity(World& world, net::EntType viewtype);
@@ -29,15 +30,18 @@ public:
     int64_t GetUpdateTime() const { return upd_time_; }
 
     void SetNametag(const std::string& nametag);
-
+     
     void Attach(net::EntNum parentnum);
     net::EntNum GetParentNum() const { return parentnum_; }
 
+    void PlaySound(const std::string& name, float volume = 1.0f, float pitch = 1.0f);
+
     void Remove() { removed_ = true; }
     bool IsRemoved() const { return removed_; }
 
     const TransformNode& GetRoot() const { return root_; }
     const Transform& GetRootTransform() const { return root_.local; }
+
     float GetMaxDistance() const { return max_distance_; }
 
     virtual ~Entity() = default;
diff --git a/src/game/mapinstance.cpp b/src/game/mapinstance.cpp
index a7fd434..b3d0023 100644
--- a/src/game/mapinstance.cpp
+++ b/src/game/mapinstance.cpp
@@ -3,7 +3,6 @@
 #include <stdexcept>
 
 #include "assets/cache.hpp"
-#include "collision/object_type.hpp"
 
 game::MapInstance::MapInstance(collision::DynamicsWorld& world, std::string mapname)
     : world_(world), mapname_(std::move(mapname))
@@ -67,14 +66,13 @@ game::MapObjectCollision::MapObjectCollision(collision::DynamicsWorld& world,
 
     const bool destructible = (flags & MAPOBJ_DESTRUCTIBLE) != 0 && cshape != nullptr;
 
-    collision::ObjectType obj_type = collision::OT_MAP_STATIC;
-
     btVector3 local_inertia(0, 0, 0);
     float mass = 0.0f;
-    
+    collision::ObjectFlags oflags = 0;
+
     if (destructible)
     {
-        obj_type = collision::OT_MAP_DESTRUCTIBLE;
+        oflags |= collision::OF_DESTRUCTIBLE;
     }
 
     // prefer simple cshape which allow destruction
@@ -93,8 +91,8 @@ game::MapObjectCollision::MapObjectCollision(collision::DynamicsWorld& world,
     offset_trans.position += trans.rotation * model_->GetColOffset();
 
     body_->setWorldTransform(offset_trans.ToBtTransform());
-    body_->setUserIndex(static_cast<int>(obj_type));
-    body_->setUserPointer(this);
+
+    collision::SetObjectInfo(body_.get(), collision::OT_MAP_OBJECT, oflags, this);
 
     // world_.GetBtWorld().addRigidBody(body_.get(), btBroadphaseProxy::StaticFilter, btBroadphaseProxy::AllFilter);
     world_.GetBtWorld().addRigidBody(body_.get());
@@ -119,7 +117,9 @@ void game::MapObjectCollision::Break()
     // make new
     body_ = std::make_unique<btRigidBody>(btRigidBody::btRigidBodyConstructionInfo(mass, nullptr, shape, local_inertia)); 
     body_->setWorldTransform(trans);
-    body_->setUserIndex(static_cast<int>(collision::OT_UNDEFINED));
+    
+    collision::SetObjectInfo(body_.get(), collision::OT_UNDEFINED, 0, this);
+
     world_.GetBtWorld().addRigidBody(body_.get());
 }
 
diff --git a/src/game/mapinstance.hpp b/src/game/mapinstance.hpp
index c918b62..bc2faaf 100644
--- a/src/game/mapinstance.hpp
+++ b/src/game/mapinstance.hpp
@@ -3,6 +3,7 @@
 #include "assets/map.hpp"
 #include "collision/dynamicsworld.hpp"
 #include "net/defs.hpp"
+#include "collision/object_info.hpp"
 
 namespace game
 {
@@ -14,7 +15,7 @@ enum MapObjectCollisionFlag : MapObjectCollisionFlags
     MAPOBJ_DESTRUCTIBLE = 0x01,
 };
 
-class MapObjectCollision
+class MapObjectCollision : public collision::ObjectCallback
 {
 public:
     MapObjectCollision(collision::DynamicsWorld& world, std::shared_ptr<const assets::Model> model,
@@ -29,8 +30,7 @@ public:
     btRigidBody& GetBtBody() { return *body_; }
     net::ObjNum GetNum() const { return num_; }
 
-    
-    ~MapObjectCollision();
+    virtual ~MapObjectCollision() override;
 
 private:
     collision::DynamicsWorld& world_;
diff --git a/src/game/openworld.cpp b/src/game/openworld.cpp
index 8230589..aedeb44 100644
--- a/src/game/openworld.cpp
+++ b/src/game/openworld.cpp
@@ -82,10 +82,9 @@ void game::OpenWorld::DestructibleDestroyed(net::ObjNum num, std::unique_ptr<Map
 {
     auto& destroyed_obj = Spawn<DestroyedObject>(std::move(col));
 
-    // Schedule(100000, [this, objnum = num]()
-    // {
-    //     RespawnObj(objnum);
-    // });
+    Schedule(10000, [this, num] {
+        RespawnObj(num);
+    });
 }
 
 std::optional<std::pair<game::Usable&, const game::UseTarget&>> game::OpenWorld::GetBestUseTarget(const glm::vec3& pos) const
diff --git a/src/game/vehicle.cpp b/src/game/vehicle.cpp
index 1a1e1a5..f5aa547 100644
--- a/src/game/vehicle.cpp
+++ b/src/game/vehicle.cpp
@@ -4,6 +4,7 @@
 #include "net/utils.hpp"
 #include "player.hpp"
 #include "player_input.hpp"
+#include "utils/random.hpp"
 
 #include <iostream>
 
@@ -33,6 +34,8 @@ game::Vehicle::Vehicle(World& world, std::string model_name, const glm::vec3& co
     body_ = std::make_unique<btRigidBody>(rb_info);
     body_->setActivationState(DISABLE_DEACTIVATION);
 
+    collision::SetObjectInfo(body_.get(), collision::OT_ENTITY, collision::OF_NOTIFY_CONTACT, this);
+
     // setup vehicle
     btRaycastVehicle::btVehicleTuning tuning;
     vehicle_ = std::make_unique<btRaycastVehicle>(tuning, body_.get(), &world_.GetVehicleRaycaster());
@@ -100,6 +103,7 @@ void game::Vehicle::Update()
     root_.UpdateMatrix();
 
     flags_ = 0;
+    UpdateCrash();
     ProcessInput();
     UpdateWheels();
 
@@ -123,6 +127,27 @@ void game::Vehicle::SendInitData(Player& player, net::OutMessage& msg) const
     msg.WriteAt(fields_pos, fields);
 }
 
+void game::Vehicle::OnContact(float impulse)
+{
+    Super::OnContact(impulse);
+
+    crash_intensity_ += impulse;
+
+    if (impulse < 1000.0f)
+        return;
+
+    if (window_health_ > 0.0f)
+    {
+        window_health_ -= impulse;
+
+        if (window_health_ <= 0.0f) // just broken
+        {
+            PlaySound("breakwindow", 1.0f, 1.0f);
+        }
+    }
+
+}
+
 void game::Vehicle::SetInput(VehicleInputType type, bool enable)
 {
     if (enable)
@@ -293,6 +318,47 @@ void game::Vehicle::ProcessInput()
         flags_ |= VF_BREAKING;
 }
 
+void game::Vehicle::UpdateCrash()
+{
+    if (window_health_ <= 0.0f)
+        flags_ |= VF_BROKENWINDOWS;
+    
+    if (no_crash_frames_)
+    {
+        --no_crash_frames_;
+    }
+    else
+    {
+        if (crash_intensity_ > 1000.0f)
+        {
+            float volume = RandomFloat(0.9f, 1.2f);
+            float pitch = RandomFloat(1.0f, 1.3f);
+
+            if (crash_intensity_ > 12000.0f)
+            {
+                volume *= 1.7f;
+                pitch *= 0.8f;
+            }
+            if (crash_intensity_ > 4000.0f)
+            {
+                volume *= 1.3f;
+                pitch *= 0.8f;
+            }
+            else
+            {
+                volume *= 0.8f;
+                pitch *= 1.2f;
+            }
+
+            PlaySound("crash", volume, pitch);
+            no_crash_frames_ = 7 + rand() % 10;
+        }
+
+    }
+
+    crash_intensity_ = 0.0f;
+}
+
 void game::Vehicle::UpdateWheels()
 {
     for (size_t i = 0; i < num_wheels_; ++i)
diff --git a/src/game/vehicle.hpp b/src/game/vehicle.hpp
index 796f99f..f6f03c4 100644
--- a/src/game/vehicle.hpp
+++ b/src/game/vehicle.hpp
@@ -40,6 +40,8 @@ public:
     virtual void Update() override;
     virtual void SendInitData(Player& player, net::OutMessage& msg) const override;
 
+    virtual void OnContact(float impulse) override;
+
     void SetInput(VehicleInputType type, bool enable);
     void SetInputs(VehicleInputFlags inputs) { in_ = inputs; }
 
@@ -59,6 +61,7 @@ public:
 
 private:
     void ProcessInput();
+    void UpdateCrash();
     void UpdateWheels();
     void UpdateSyncState();
     VehicleSyncFieldFlags WriteState(net::OutMessage& msg, const VehicleSyncState& base) const;
@@ -86,6 +89,11 @@ private:
     size_t sync_current_ = 0;
 
     VehicleInputFlags in_ = 0;
+
+    float window_health_ = 10000.0f;
+
+    float crash_intensity_ = 0.0f;
+    size_t no_crash_frames_ = 0;
 };
 
 } // namespace game
\ No newline at end of file
diff --git a/src/game/vehicle_sync.hpp b/src/game/vehicle_sync.hpp
index ff14018..c31bd5f 100644
--- a/src/game/vehicle_sync.hpp
+++ b/src/game/vehicle_sync.hpp
@@ -14,8 +14,9 @@ using VehicleFlags = uint8_t;
 enum VehicleFlag : VehicleFlags
 {
     VF_NONE,
-    VF_ACCELERATING = 1,
-    VF_BREAKING = 2,
+    VF_ACCELERATING = 0x01,
+    VF_BREAKING = 0x02,
+    VF_BROKENWINDOWS = 0x04,
 };
 
 struct VehicleSyncState
diff --git a/src/game/world.cpp b/src/game/world.cpp
index 15e9939..62d76c8 100644
--- a/src/game/world.cpp
+++ b/src/game/world.cpp
@@ -5,7 +5,7 @@
 
 #include "assets/cache.hpp"
 #include "utils/allocnum.hpp"
-#include "collision/object_type.hpp"
+#include "collision/object_info.hpp"
 
 game::World::World(std::string mapname) : Scheduler(time_ms_), map_(*this, std::move(mapname))
 {
@@ -49,7 +49,7 @@ void game::World::Update(int64_t delta_time)
     // GetBtWorld().stepSimulation(delta_s, 1, delta_s);
     GetBtWorld().stepSimulation(delta_s, 2, delta_s * 0.5f);
 
-    DetectDestructibleCollisions();
+    HandleContacts();
 
     RunTasks();
 
@@ -96,7 +96,7 @@ void game::World::RespawnObj(net::ObjNum objnum)
     }
 }
 
-void game::World::DetectDestructibleCollisions()
+void game::World::HandleContacts()
 {
     auto& bt_world = GetBtWorld();
     int numManifolds = bt_world.getDispatcher()->getNumManifolds();
@@ -104,41 +104,48 @@ void game::World::DetectDestructibleCollisions()
     static std::vector<net::ObjNum> to_destroy;
     to_destroy.clear();
 
+    auto ProcessContact = [&](btRigidBody* body, btRigidBody* other_body, btManifoldPoint& pt) {
+        collision::ObjectType type;
+        collision::ObjectFlags flags;
+        collision::ObjectCallback* cb;
+        collision::GetObjectInfo(body, type, flags, cb);
+
+        if (cb && (flags & collision::OF_NOTIFY_CONTACT))
+        {
+            cb->OnContact(pt.getAppliedImpulse());
+        }
+
+        if (type == collision::OT_MAP_OBJECT && (flags & collision::OF_DESTRUCTIBLE))
+        {
+            auto col = dynamic_cast<MapObjectCollision*>(cb);
+            if (!col)
+                return;
+            
+            const float break_threshold = 100.0f; // TODO: per-object threshold
+               
+            if (pt.getAppliedImpulse() > break_threshold)
+            {
+                to_destroy.push_back(col->GetNum());
+                other_body->applyCentralImpulse(pt.m_normalWorldOnB * pt.getAppliedImpulse() * 0.5f);        
+            }
+
+            return;
+        }
+    };
+
     // std::cout << "Checking " << numManifolds << " manifolds for destructible collisions..." << std::endl;
     for (int i = 0; i < numManifolds; i++)
     {
         btPersistentManifold* contactManifold = bt_world.getDispatcher()->getManifoldByIndexInternal(i);
 
-        const btRigidBody* bodyA = static_cast<const btRigidBody*>(contactManifold->getBody0());
-        const btRigidBody* bodyB = static_cast<const btRigidBody*>(contactManifold->getBody1());
-
-        const btRigidBody* destructibleBody = nullptr;
-
-        if (bodyA->getUserIndex() == collision::OT_MAP_DESTRUCTIBLE)
-            destructibleBody = bodyA;
-        else if (bodyB->getUserIndex() == collision::OT_MAP_DESTRUCTIBLE)
-            destructibleBody = bodyB;
-
-        if (!destructibleBody)
-            continue;
+        btRigidBody* body0 = const_cast<btRigidBody*>(static_cast<const btRigidBody*>(contactManifold->getBody0()));
+        btRigidBody* body1 = const_cast<btRigidBody*>(static_cast<const btRigidBody*>(contactManifold->getBody1()));
 
         for (int j = 0; j < contactManifold->getNumContacts(); j++)
         {
-            const float break_threshold = 100.0f; // TODO: per-object threshold
-
             btManifoldPoint& pt = contactManifold->getContactPoint(j);
-
-            if (pt.getAppliedImpulse() > break_threshold)
-            {
-                std::cout << "Destructible collision detected: impulse = " << pt.getAppliedImpulse() << std::endl;
-
-                MapObjectCollision* obj_col = static_cast<MapObjectCollision*>(destructibleBody->getUserPointer());
-                to_destroy.push_back(obj_col->GetNum());
-
-                const btRigidBody* otherBody = (destructibleBody == bodyA) ? bodyB : bodyA;
-                btRigidBody* otherBodyNonConst = const_cast<btRigidBody*>(otherBody);
-                otherBodyNonConst->applyCentralImpulse(pt.m_normalWorldOnB * pt.getAppliedImpulse() * 0.5f);
-            }
+            ProcessContact(body0, body1, pt);
+            ProcessContact(body1, body0, pt);
         }
     }
 
diff --git a/src/game/world.hpp b/src/game/world.hpp
index e5121e1..cedc60f 100644
--- a/src/game/world.hpp
+++ b/src/game/world.hpp
@@ -56,7 +56,7 @@ public:
     virtual ~World() = default;
 
 private:
-    void DetectDestructibleCollisions();
+    void HandleContacts();
 
     void DestroyObject(net::ObjNum objnum);
 
diff --git a/src/gameview/entityview.cpp b/src/gameview/entityview.cpp
index 91da02c..04af451 100644
--- a/src/gameview/entityview.cpp
+++ b/src/gameview/entityview.cpp
@@ -23,6 +23,8 @@ bool game::view::EntityView::ProcessMsg(net::EntMsgType type, net::InMessage& ms
         return ReadNametag(msg);
     case net::EMSG_ATTACH:
         return ReadAttach(msg);
+    case net::EMSG_PLAYSOUND:
+        return ProcessPlaySoundMsg(msg);
     default:
         return false;
     }
@@ -82,6 +84,21 @@ bool game::view::EntityView::ReadAttach(net::InMessage& msg)
     return msg.Read(parentnum_);
 }
 
+bool game::view::EntityView::ProcessPlaySoundMsg(net::InMessage& msg)
+{
+    net::SoundName name;
+    float volume, pitch;
+    if (!msg.Read(name) || !msg.Read<net::SoundVolumeQ>(volume) || !msg.Read<net::SoundPitchQ>(pitch))
+        return false;
+
+    auto sound = assets::CacheManager::GetSound("data/" + std::string(name) + ".snd");
+    auto snd = audioplayer_.PlaySound(sound, &root_.local.position);
+    snd->SetVolume(volume);
+    snd->SetPitch(pitch);
+
+    return true;
+}
+
 void game::view::EntityView::DrawNametag(const DrawArgs& args)
 {
     if (nametag_.empty())
diff --git a/src/gameview/entityview.hpp b/src/gameview/entityview.hpp
index b735ac8..dc5a973 100644
--- a/src/gameview/entityview.hpp
+++ b/src/gameview/entityview.hpp
@@ -50,6 +50,7 @@ public:
 private:
     bool ReadNametag(net::InMessage& msg);
     bool ReadAttach(net::InMessage& msg);
+    bool ProcessPlaySoundMsg(net::InMessage& msg);
 
     void DrawNametag(const DrawArgs& args);
     void DrawAxes(const DrawArgs& args);
diff --git a/src/gameview/vehicleview.cpp b/src/gameview/vehicleview.cpp
index bc86bbb..8af44f4 100644
--- a/src/gameview/vehicleview.cpp
+++ b/src/gameview/vehicleview.cpp
@@ -15,7 +15,7 @@ game::view::VehicleView::VehicleView(WorldView& world, net::InMessage& msg)
         throw EntityInitError();
 
     model_ = assets::CacheManager::GetVehicleModel("data/" + std::string(modelname) + ".veh");
-
+    mesh_ = *model_->GetModel()->GetMesh();
     
     auto& modelwheels = model_->GetWheels();
     wheels_.resize(modelwheels.size());
@@ -102,17 +102,26 @@ void game::view::VehicleView::Update(const UpdateInfo& info)
         snd_accel_src_->Delete();
         snd_accel_src_ = nullptr;
     }
+
+    // update windows
+    if ((flags_ & VF_BROKENWINDOWS) && !windows_broken_)
+    {
+        windows_broken_ = true;
+
+        auto it = mesh_.surface_names.find("carwindows"); 
+        if (it != mesh_.surface_names.end())
+        {
+            size_t idx = it->second;
+            mesh_.surfaces[idx].texture = assets::CacheManager::GetTexture("data/carbrokenwindows.png");
+        }
+    }
 }
 
 void game::view::VehicleView::Draw(const DrawArgs& args)
 {
     Super::Draw(args);
 
-    // TOOD: chceck and fix
-    const auto& model = *model_->GetModel();
-    const auto& mesh = *model.GetMesh();
-
-    for (const auto& surface : mesh.surfaces)
+    for (const auto& surface : mesh_.surfaces)
     {
         gfx::DrawSurfaceCmd cmd;
         cmd.surface = &surface;
diff --git a/src/gameview/vehicleview.hpp b/src/gameview/vehicleview.hpp
index d1f4723..ce8aa59 100644
--- a/src/gameview/vehicleview.hpp
+++ b/src/gameview/vehicleview.hpp
@@ -36,6 +36,7 @@ private:
 
 private:
     std::shared_ptr<const assets::VehicleModel> model_;
+    assets::Mesh mesh_;
     glm::vec4 color_;
 
     game::VehicleSyncState sync_;
@@ -48,6 +49,8 @@ private:
 
     std::shared_ptr<const audio::Sound> snd_accel_;
     audio::SoundSource* snd_accel_src_ = nullptr;
+
+    bool windows_broken_ = false;
 };
 
 }
\ No newline at end of file
diff --git a/src/gameview/worldview.cpp b/src/gameview/worldview.cpp
index bb82137..e0170d8 100644
--- a/src/gameview/worldview.cpp
+++ b/src/gameview/worldview.cpp
@@ -27,6 +27,12 @@ game::view::WorldView::WorldView(ClientSession& session, net::InMessage& msg) :
 
         map_.EnableObj(objnum, false);
     }
+
+    // cache common snds and stuff
+    Cache(assets::CacheManager::GetSound("data/breaksign.snd"));
+    Cache(assets::CacheManager::GetSound("data/breakpatnik.snd"));
+    Cache(assets::CacheManager::GetSound("data/crash.snd"));
+    Cache(assets::CacheManager::GetSound("data/breakwindow.snd"));
 }
 
 bool game::view::WorldView::ProcessMsg(net::MessageType type, net::InMessage& msg)
@@ -185,3 +191,8 @@ bool game::view::WorldView::ProcessObjDestroyOrRespawnMsg(net::InMessage& msg, b
     map_.EnableObj(objnum, enable);
     return true;
 }
+
+void game::view::WorldView::Cache(std::any val)
+{
+    cache_.emplace_back(std::move(val));
+}
diff --git a/src/gameview/worldview.hpp b/src/gameview/worldview.hpp
index af690bf..930e96d 100644
--- a/src/gameview/worldview.hpp
+++ b/src/gameview/worldview.hpp
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <any>
+
 #include "assets/map.hpp"
 #include "draw_args.hpp"
 #include "net/defs.hpp"
@@ -38,6 +40,8 @@ private:
 
     bool ProcessObjDestroyOrRespawnMsg(net::InMessage& msg, bool enable);
 
+    void Cache(std::any val);
+
 private:
     ClientSession& session_;
     
@@ -47,6 +51,8 @@ private:
     float time_ = 0.0f;
     
     audio::Master& audiomaster_;
+
+    std::vector<std::any> cache_;
 };
 
 } // namespace game::view
\ No newline at end of file
diff --git a/src/net/defs.hpp b/src/net/defs.hpp
index 094dd50..972fa5e 100644
--- a/src/net/defs.hpp
+++ b/src/net/defs.hpp
@@ -86,6 +86,7 @@ enum EntMsgType : uint8_t
     EMSG_NAMETAG,
     EMSG_ATTACH,
     EMSG_UPDATE,
+    EMSG_PLAYSOUND,
 };
 
 using PositionElemQ = Quantized<uint32_t, -10000, 10000, 1>;
@@ -110,6 +111,10 @@ using ColorQ = Quantized<uint8_t, 0, 1>;
 
 using NameTag = FixedStr<64>;
 
+using SoundName = FixedStr<64>;
+using SoundVolumeQ = Quantized<uint8_t, 0, 2>;
+using SoundPitchQ = Quantized<uint8_t, 0, 2>;
+
 using AnimBlendQ = Quantized<uint8_t, 0, 1>;
 using AnimTimeQ = Quantized<uint8_t, 0, 1>;
 
diff --git a/src/utils/random.hpp b/src/utils/random.hpp
new file mode 100644
index 0000000..3e4e2ef
--- /dev/null
+++ b/src/utils/random.hpp
@@ -0,0 +1,8 @@
+#pragma once
+
+#include <cstdlib>
+
+inline float RandomFloat(float min, float max)
+{
+    return min + (max - min) * static_cast<float>(rand() % 100) * 0.01f;
+}