Revision: 2661
http://rigsofrods.svn.sourceforge.net/rigsofrods/?rev=2661&view=rev
Author: ulteq
Date: 2012-05-25 06:26:47 +0000 (Fri, 25 May 2012)
Log Message:
-----------
-Feature: adds an engine speed limiter (caps throttle at maxRPM)
+Bugfix: switching from N to D will select an appropriate gear now
+Bugfix: engine won't stall anymore in automatic mode TWO
+Bugfix: engine can't be blown up anymore in automatic mode
~renamed curGearboxRPM to curWheelRevolutions
~fixed a typo (iddleRPM -> idleRPM)
Modified Paths:
--------------
trunk/source/main/gameplay/BeamEngine.cpp
trunk/source/main/gameplay/BeamEngine.h
Modified: trunk/source/main/gameplay/BeamEngine.cpp
===================================================================
--- trunk/source/main/gameplay/BeamEngine.cpp 2012-05-25 01:56:26 UTC (rev
2660)
+++ trunk/source/main/gameplay/BeamEngine.cpp 2012-05-25 06:26:47 UTC (rev
2661)
@@ -38,14 +38,14 @@
, curEngineRPM(0.0f)
, curGear(0)
, curGearRange(0)
- , curGearboxRPM(0.0f)
+ , curWheelRevolutions(0.0f)
, curTurboRPM(0.0f)
, engineTorque(torque - brakingTorque)
, gearsRatio(gears)
, hasair(true)
, hasturbo(true)
, hydropump(0.0f)
- , iddleRPM(iddle)
+ , idleRPM(iddle)
, inertia(10.0f)
, maxRPM(max)
, numGears((int)gears.size() - 2)
@@ -209,7 +209,7 @@
if (curGear)
{
float gearboxspinner = curEngineRPM / gearsRatio[curGear + 1];
- curClutchTorque = (gearboxspinner - curGearboxRPM) * curClutch
* clutchForce;
+ curClutchTorque = (gearboxspinner - curWheelRevolutions) *
curClutch * clutchForce;
} else
{
curClutchTorque = 0.0f;
@@ -245,7 +245,7 @@
curGear += shiftval;
if (automode == AUTOMATIC)
{
- while (curGear > 2 && curGearboxRPM *
gearsRatio[curGear + 1] < iddleRPM)
+ while (curGear > 2 &&
curWheelRevolutions * gearsRatio[curGear + 1] < idleRPM)
{
curGear -= 2;
}
@@ -278,7 +278,7 @@
}
}
- // auto release clutch
+ // auto declutch
if (shifting)
{
// we are shifting, just avoid stalling in worst case
@@ -302,9 +302,9 @@
} else if (std::abs(curGear) == 1)
{
// 1st gear : special
- if (curEngineRPM > iddleRPM)
+ if (curEngineRPM > idleRPM)
{
- curClutch = ((curEngineRPM - iddleRPM) /
(maxRPM - iddleRPM));
+ curClutch = ((curEngineRPM - idleRPM) / (maxRPM
- idleRPM));
curClutch = std::min(curClutch, 1.0f);
} else
{
@@ -316,21 +316,43 @@
}
}
- if (doUpdate)
+ // gear hack
+ if (automode == AUTOMATIC && curGear >= 0 && !shifting && !postshifting
&& (autoselect == DRIVE || autoselect == TWO))
{
- // gear hack
- if (curGear >= 0 && automode == AUTOMATIC && !shifting &&
!postshifting && autoselect == DRIVE)
+ if ((curEngineRPM > maxRPM - 100.0f || curWheelRevolutions *
gearsRatio[curGear + 1] > maxRPM - 100.0f))
{
- if (curEngineRPM > maxRPM - 100.0f && curGear <
numGears )
+ if ((autoselect == DRIVE && curGear < numGears) ||
(autoselect == TWO && curGear < 2))
{
shift(1);
- } else if (curEngineRPM < iddleRPM && curGear > 1 )
- {
- shift(-1);
}
+ } else if (curGear > 1 && curEngineRPM < idleRPM)
+ {
+ shift(-1);
}
}
+ // engine speed limiter
+ if (curEngineRPM > maxRPM) // you could add a factor of 1.248f for
legacy purposes (a factor of 1.0f significantly lowers the top speed of most
vehicles)
+ {
+ float acc = 0.0f + 1.0f / (1.0f + (curEngineRPM - maxRPM) /
2.0f);
+ setAcc(acc);
+ }
+
+ // avoid over-revving
+ if (automode <= SEMIAUTO && curGear != 0)
+ {
+ if (std::abs(curWheelRevolutions * gearsRatio[curGear + 1]) >
maxRPM * 1.05f)
+ {
+ float clutch = 0.0f + 1.0f / (1.0f +
std::abs(curWheelRevolutions * gearsRatio[curGear + 1] - maxRPM * 1.05f) /
2.0f);
+ curClutch = std::min(clutch, curClutch);
+ }
+ if (curGear * curWheelRevolutions < -10.0f)
+ {
+ float clutch = 0.0f + 1.0f / (1.0f + std::abs(-10.0f -
curGear * curWheelRevolutions) / 2.0f);
+ curClutch = std::min(clutch, curClutch);
+ }
+ }
+
// audio stuff
updateAudio(doUpdate);
}
@@ -349,7 +371,7 @@
#ifdef USE_OPENAL
SoundScriptManager::getSingleton().modulate(trucknum,
SS_MOD_ENGINE, curEngineRPM);
SoundScriptManager::getSingleton().modulate(trucknum,
SS_MOD_TORQUE, curClutchTorque);
- SoundScriptManager::getSingleton().modulate(trucknum,
SS_MOD_GEARBOX, curGearboxRPM);
+ SoundScriptManager::getSingleton().modulate(trucknum,
SS_MOD_GEARBOX, curWheelRevolutions);
#endif // USE_OPENAL
}
#ifdef USE_OPENAL
@@ -364,17 +386,11 @@
#endif // USE_OPENAL
}
-
float BeamEngine::getRPM()
{
return curEngineRPM;
}
-void BeamEngine::setRPM(float value)
-{
- curEngineRPM = value;
-}
-
void BeamEngine::toggleAutoMode()
{
automode = (automode + 1) % MANUAL_RANGES;
@@ -469,9 +485,14 @@
return curClutchTorque;
}
+void BeamEngine::setRPM(float rpm)
+{
+ curEngineRPM = rpm;
+}
+
void BeamEngine::setSpin(float rpm)
{
- curGearboxRPM=rpm;
+ curWheelRevolutions = rpm;
}
// for hydros acceleration
@@ -529,7 +550,7 @@
}
curClutch = 0.0f;
curEngineRPM = 750.0f;
- curGearboxRPM = 750.0f;
+ curWheelRevolutions = 0.0f;
curClutchTorque = 0.0f;
curTurboRPM = 0.0f;
apressure = 0.0f;
@@ -546,7 +567,7 @@
{
curGear = 0;
curClutch = 0.0f;
- autoselect= NEUTRAL;
+ autoselect = NEUTRAL;
curEngineRPM = 0.0f;
running = false;
contact = false;
@@ -668,15 +689,39 @@
void BeamEngine::updateShifts()
{
+ if (autoselect == MANUALMODE) return;
+
#ifdef USE_OPENAL
SoundScriptManager::getSingleton().trigOnce(trucknum, SS_TRIG_SHIFT);
#endif // USE_OPENAL
- if (autoselect == REAR) curGear = -1;
- if (autoselect == NEUTRAL) curGear = 0;
- if (autoselect == DRIVE) curGear = std::max(1, curGear);
- if (autoselect == TWO) curGear = std::max(1, std::min(curGear, 2));
- if (autoselect == ONE) curGear = 1;
+ if (autoselect == REAR)
+ {
+ curGear = -1;
+ } else if (autoselect == NEUTRAL)
+ {
+ curGear = 0;
+ } else if (autoselect == ONE)
+ {
+ curGear = 1;
+ } else
+ {
+ // search for an appropriate gear
+ int newGear = 1;
+
+ while (newGear < numGears && curWheelRevolutions > 0.0f &&
curWheelRevolutions * gearsRatio[newGear + 1] < maxRPM - 100.0f)
+ {
+ newGear++;
+ }
+
+ if (autoselect == DRIVE)
+ {
+ curGear = newGear;
+ } else if (autoselect == TWO)
+ {
+ curGear = std::min(newGear, 2);
+ }
+ }
}
void BeamEngine::autoShiftSet(int mode)
Modified: trunk/source/main/gameplay/BeamEngine.h
===================================================================
--- trunk/source/main/gameplay/BeamEngine.h 2012-05-25 01:56:26 UTC (rev
2660)
+++ trunk/source/main/gameplay/BeamEngine.h 2012-05-25 06:26:47 UTC (rev
2661)
@@ -47,7 +47,7 @@
void setAutoMode(int mode);
void setClutch(float clutch);
void setOptions(float einertia, char etype, float eclutch, float ctime,
float stime, float pstime);
- void setRPM(float value);
+ void setRPM(float rpm);
void setSpin(float rpm);
void toggleAutoMode();
@@ -73,7 +73,7 @@
bool isRunning() { return running; };
char getType() { return type; };
float getEngineTorque() { return engineTorque; };
- float getIdleRPM() { return iddleRPM; };
+ float getIdleRPM() { return idleRPM; };
float getMaxRPM() { return maxRPM; };
int getAutoShift();
size_t getNumGears() { return gearsRatio.size() - 2; };
@@ -97,7 +97,7 @@
protected:
// gear stuff
- float curGearboxRPM;
+ float curWheelRevolutions;
int curGear;
int curGearRange;
int numGears;
@@ -120,7 +120,7 @@
float curEngineRPM;
float engineTorque;
float hydropump;
- float iddleRPM;
+ float idleRPM;
float inertia;
float maxRPM;
float stallRPM;
@@ -147,6 +147,7 @@
TorqueCurve *torqueCurve;
float apressure;
int automode;
+
int trucknum;
};
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