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improved kart engine sound

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git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@2383 178a84e3-b1eb-0310-8ba1-8eac791a3b58
This commit is contained in:
auria 2008-10-27 01:38:10 +00:00
parent 7e14052be1
commit cf897e5d56
1 changed files with 3 additions and 14 deletions
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17
src/kart.cpp
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@ -259,7 +259,7 @@ void Kart::createPhysics(ssgEntity *obj)
//create the engine sound
if(m_engine_sound)
{
m_engine_sound->speed(0.5f);
m_engine_sound->speed(0.6f);
m_engine_sound->loop();
m_engine_sound->play();
}
@ -831,21 +831,10 @@ void Kart::updatePhysics (float dt)
if(fabsf(m_speed) < 0.2f) // quick'n'dirty workaround for bug 1776883
m_speed = 0;
//Change the engine sound based on kart RPM.
//The equation here is:
// speed * gear_ratio
// RPM = --------------------
// tire_diameter
//the magic number 1.7 is used to bring the computed gear ratio into a sensible range
float gear_ratio = 1.7f + (1 - m_current_gear_ratio);
float tire_diameter = m_kart_properties->getWheelRadius();
m_max_gear_rpm = m_current_gear_ratio * max_speed;
// 8 is magic number again.
m_rpm = ((m_speed * gear_ratio) / (8*tire_diameter));
// when going faster, use higher pitch for engine
if(m_engine_sound && sfx_manager->sfxAllowed())
{
m_engine_sound->speed((float)((m_rpm * 2) / m_max_gear_rpm));
m_engine_sound->speed(0.6 + (float)(m_speed / max_speed)*0.7f);
m_engine_sound->position(getXYZ());
}