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-rw-r--r--src/vehicles/Transmission.cpp118
1 files changed, 114 insertions, 4 deletions
diff --git a/src/vehicles/Transmission.cpp b/src/vehicles/Transmission.cpp
index 1aeabfe0..18e5fa98 100644
--- a/src/vehicles/Transmission.cpp
+++ b/src/vehicles/Transmission.cpp
@@ -4,6 +4,7 @@
#include "HandlingMgr.h"
#include "Transmission.h"
+//--LCS: file done
void
cTransmission::InitGearRatios(void)
{
@@ -14,11 +15,14 @@ cTransmission::InitGearRatios(void)
memset(Gears, 0, sizeof(Gears));
+ float baseVelocity = 0.5f*fMaxVelocity / nNumberOfGears;
+ float step = (fMaxVelocity - baseVelocity) / nNumberOfGears;
+
for(i = 1; i <= nNumberOfGears; i++){
pGearRatio0 = &Gears[i-1];
pGearRatio1 = &Gears[i];
- pGearRatio1->fMaxVelocity = (float)i / nNumberOfGears * fMaxVelocity;
+ pGearRatio1->fMaxVelocity = baseVelocity + i*step;
velocityDiff = pGearRatio1->fMaxVelocity - pGearRatio0->fMaxVelocity;
@@ -45,9 +49,12 @@ cTransmission::CalculateGearForSimpleCar(float speed, uint8 &gear)
pGearRatio = &Gears[gear];
fCurVelocity = speed;
- if(speed > pGearRatio->fShiftUpVelocity)
- gear++;
- else if(speed < pGearRatio->fShiftDownVelocity){
+ if(speed > pGearRatio->fShiftUpVelocity){
+ if(gear + 1 > nNumberOfGears)
+ gear = nNumberOfGears;
+ else
+ gear++;
+ }else if(speed < pGearRatio->fShiftDownVelocity){
if(gear - 1 < 0)
gear = 0;
else
@@ -55,6 +62,109 @@ cTransmission::CalculateGearForSimpleCar(float speed, uint8 &gear)
}
}
+float TRANSMISSION_NITROS_INERTIA_MULT = 0.5f;
+float TRANSMISSION_AI_CHEAT_INERTIA_MULT = 0.75f;
+float TRANSMISSION_NITROS_MULT = 2.0f;
+float TRANSMISSION_AI_CHEAT_MULT = 1.2f;
+float TRANSMISSION_SMOOTHER_FRAC = 0.85f;
+float TRANSMISSION_FREE_ACCELERATION = 0.1f;
+
+float
+cTransmission::CalculateDriveAcceleration(const float &gasPedal, uint8 &gear, float &time, const float &velocity, float *inertiaVar1, float *inertiaVar2, uint8 nDriveWheels, uint8 cheat)
+{
+ static float fAcceleration = 0.0f;
+ static float fVelocity;
+ static float fCheat;
+ static tGear *pGearRatio;
+
+ fVelocity = velocity;
+ if(fVelocity < fMaxReverseVelocity)
+ return 0.0f;
+ if(fVelocity > fMaxVelocity)
+ return 0.0f;
+ fCurVelocity = fVelocity;
+
+ assert(gear <= nNumberOfGears);
+
+ pGearRatio = &Gears[gear];
+ if(fVelocity > pGearRatio->fShiftUpVelocity){
+ if(gear != 0 || gasPedal > 0.0f){
+ gear++;
+ return CalculateDriveAcceleration(gasPedal, gear, time, fVelocity, nil, nil, 0, false);
+ }
+ }else if(fVelocity < pGearRatio->fShiftDownVelocity && gear != 0){
+ if(gear != 1 || gasPedal < 0.0f){
+ gear--;
+ return CalculateDriveAcceleration(gasPedal, gear, time, fVelocity, nil, nil, 0, false);
+ }
+ }
+
+ float accelMul;
+
+ if(nNumberOfGears == 1){
+ accelMul = 1.0f;
+ }else if(gear == 0){
+ accelMul = 4.5f;
+ }else{
+ float f = 1.0f - (gear-1.0f)/(nNumberOfGears-1.0f);
+ if(Flags & HANDLING_1G_BOOST)
+ accelMul = SQR(f)*5.0f + 1.0f;
+ else if(Flags & HANDLING_2G_BOOST)
+ accelMul = SQR(f)*4.0f + 1.0f;
+ else
+ accelMul = SQR(f)*3.0f + 1.0f;
+ }
+
+ fCheat = 1.0f;
+ float nitroMult = 1.0f;
+ if(cheat == 1)
+ fCheat = TRANSMISSION_AI_CHEAT_MULT;
+ else if(cheat == 2)
+ nitroMult = TRANSMISSION_NITROS_MULT;
+
+ fAcceleration = fEngineAcceleration*CTimer::GetTimeStep()*0.4f*accelMul*gasPedal*fCheat*nitroMult;
+
+ if(inertiaVar1 != nil && inertiaVar2 != nil){
+ if(nDriveWheels == 0){
+ float f = TRANSMISSION_FREE_ACCELERATION*CTimer::GetTimeStep()*Abs(gasPedal)/fEngineInertia;
+ *inertiaVar1 = Min(*inertiaVar1 + f, 1.0f);
+ *inertiaVar2 = 0.1f;
+ }else{
+ float var1;
+ // What is being calculated here?
+ // TODO: find better names for the inertia vars
+ if(gear == 0){
+ var1 = ((fMaxVelocity/nNumberOfGears)*(1.0f-0.6667f) - fVelocity) /
+ ((fMaxVelocity/nNumberOfGears)*(1.0f-0.6667f) - Gears[gear].fShiftDownVelocity);
+ }else if(gear == 1){
+ var1 = ((fMaxVelocity/nNumberOfGears)*(1.0f-0.6667f) + fVelocity) /
+ ((fMaxVelocity/nNumberOfGears)*(1.0f-0.6667f) + Gears[gear].fShiftUpVelocity);
+ }else{
+ var1 = (fVelocity - Gears[gear].fShiftDownVelocity) /
+ (Gears[gear].fShiftUpVelocity - Gears[gear].fShiftDownVelocity);
+ }
+ float inertiaMult = var1 - *inertiaVar1;
+ if(cheat == 1)
+ inertiaMult *= TRANSMISSION_AI_CHEAT_INERTIA_MULT;
+ else if(cheat == 2)
+ inertiaMult *= TRANSMISSION_NITROS_INERTIA_MULT;
+ float var2target = 1.0f - inertiaMult*fEngineInertia;
+ var2target = Clamp(var2target, 0.1f, 1.0f);
+ *inertiaVar2 = (1.0f-TRANSMISSION_SMOOTHER_FRAC)*var2target + TRANSMISSION_SMOOTHER_FRAC*(*inertiaVar2);
+ *inertiaVar1 = var1;
+ fAcceleration *= *inertiaVar2;
+ }
+ }
+
+ float targetVelocity = Gears[gear].fMaxVelocity*fCheat;
+ if(Gears[gear].fMaxVelocity < 0.0f && targetVelocity > fVelocity)
+ fAcceleration *= 1.0f - Min((targetVelocity - fVelocity)/0.05f, 1.0f);
+ else if(Gears[gear].fMaxVelocity > 0.0f && targetVelocity < fVelocity)
+ fAcceleration *= 1.0f - Min((fVelocity - targetVelocity)/0.05f, 1.0f);
+ return fAcceleration;
+}
+
+// TEMP old VC code until we have bikes
float
cTransmission::CalculateDriveAcceleration(const float &gasPedal, uint8 &gear, float &time, const float &velocity, bool cheat)
{