Method update

src/OpenLoco/src/Effects/VehicleCrashEffect.cpp:20–79

0x004406A0

    // 0x004406A0
    void VehicleCrashParticle::update()
    {
        invalidateSprite();

        timeToLive--;
        if (timeToLive == 0)
        {
            EntityManager::freeEntity(this);
            return;
        }

        // Apply gravity
        accelerationZ -= kGravity;

        // Apply air resistance
        accelerationX -= (accelerationX / 256);
        accelerationY -= (accelerationY / 256);
        accelerationZ -= (accelerationZ / 256);

        // Update velocity and position
        int32_t vx = velocity.x + accelerationX;
        int32_t vy = velocity.y + accelerationY;
        int32_t vz = velocity.z + accelerationZ;

        auto newLoc = position + World::Pos3{ static_cast<coord_t>(vx >> 16), static_cast<coord_t>(vy >> 16), static_cast<coord_t>(vz >> 16) };

        velocity = World::Pos3{ static_cast<coord_t>(vx & 0xFFFF), static_cast<coord_t>(vy & 0xFFFF), static_cast<coord_t>(vz & 0xFFFF) };

        // Check collision with land / water
        const auto tileHeight = World::TileManager::getHeight({ newLoc.x, newLoc.y });
        const auto landZ = tileHeight.landHeight;
        const auto waterZ = tileHeight.waterHeight;

        if (waterZ != 0 && position.z >= waterZ && newLoc.z <= waterZ)
        {
            // We hit the water surface, create a splash effect.
            const auto splashPos = World::Pos3{ position.x, position.y, waterZ };

            Audio::playSound(Audio::SoundId::splash2, Audio::ChannelId::vehicles, splashPos);
            Splash::create({ position.x, position.y, waterZ });

            EntityManager::freeEntity(this);
            return;
        }

        if (position.z >= landZ && newLoc.z <= landZ)
        {
            // We hit land surface apply bounce.
            accelerationZ = -accelerationZ;
            newLoc.z = landZ;
        }

        moveTo(newLoc);

        frame += kAnimationSpeed;
        if (frame >= kMaxSplashFrames)
        {
            frame = 0;