mirror of https://git.rip/DMCA_FUCKER/re3.git
139 lines
3.4 KiB
C++
139 lines
3.4 KiB
C++
#include "common.h"
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#include "Timer.h"
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#include "HandlingMgr.h"
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#include "Transmission.h"
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void
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cTransmission::InitGearRatios(void)
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{
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static tGear *pGearRatio0 = nil;
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static tGear *pGearRatio1 = nil;
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int i;
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float velocityDiff;
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memset(Gears, 0, sizeof(Gears));
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for(i = 1; i <= nNumberOfGears; i++){
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pGearRatio0 = &Gears[i-1];
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pGearRatio1 = &Gears[i];
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pGearRatio1->fMaxVelocity = (float)i / nNumberOfGears * fMaxVelocity;
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velocityDiff = pGearRatio1->fMaxVelocity - pGearRatio0->fMaxVelocity;
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if(i >= nNumberOfGears){
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pGearRatio1->fShiftUpVelocity = fMaxVelocity;
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}else{
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Gears[i+1].fShiftDownVelocity = velocityDiff*0.42f + pGearRatio0->fMaxVelocity;
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pGearRatio1->fShiftUpVelocity = velocityDiff*0.6667f + pGearRatio0->fMaxVelocity;
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}
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}
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// Reverse gear
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Gears[0].fMaxVelocity = fMaxReverseVelocity;
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Gears[0].fShiftUpVelocity = -0.01f;
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Gears[0].fShiftDownVelocity = fMaxReverseVelocity;
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Gears[1].fShiftDownVelocity = -0.01f;
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}
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void
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cTransmission::CalculateGearForSimpleCar(float speed, uint8 &gear)
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{
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static tGear *pGearRatio;
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pGearRatio = &Gears[gear];
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fCurVelocity = speed;
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if(speed > pGearRatio->fShiftUpVelocity)
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gear++;
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else if(speed < pGearRatio->fShiftDownVelocity){
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if(gear - 1 < 0)
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gear = 0;
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else
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gear--;
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}
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}
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float
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cTransmission::CalculateDriveAcceleration(const float &gasPedal, uint8 &gear, float &time, const float &velocity, bool cheat)
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{
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static float fAcceleration = 0.0f;
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static float fVelocity;
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static float fCheat;
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static tGear *pGearRatio;
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fVelocity = velocity;
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if(fVelocity < fMaxReverseVelocity){
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fVelocity = fMaxReverseVelocity;
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return 0.0f;
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}
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if(fVelocity > fMaxVelocity){
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fVelocity = fMaxVelocity;
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return 0.0f;
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}
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fCurVelocity = fVelocity;
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assert(gear <= nNumberOfGears);
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pGearRatio = &Gears[gear];
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if(fVelocity > pGearRatio->fShiftUpVelocity){
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if(gear != 0 || gasPedal > 0.0f){
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gear++;
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time = 0.0f;
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return CalculateDriveAcceleration(gasPedal, gear, time, fVelocity, false);
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}
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}else if(fVelocity < pGearRatio->fShiftDownVelocity && gear != 0){
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if(gear != 1 || gasPedal < 0.0f){
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gear--;
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time = 0.0f;
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return CalculateDriveAcceleration(gasPedal, gear, time, fVelocity, false);
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}
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}
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if(time > 0.0f){
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// changing gears currently, can't accelerate
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fAcceleration = 0.0f;
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time -= CTimer::GetTimeStepInSeconds();
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}else{
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float speedMul, accelMul;
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if(gear < 1){
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// going reverse
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accelMul = (Flags & HANDLING_2G_BOOST) ? 2.0f : 1.0f;
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speedMul = -1.0f;
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}else if(nNumberOfGears == 1){
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accelMul = 1.0f;
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speedMul = 1.0f;
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}else{
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// BUG or not? this is 1.0 normally but 0.0 in the highest gear
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float f = 1.0f - (gear-1)/(nNumberOfGears-1);
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speedMul = 3.0f*sq(f) + 1.0f;
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// This is pretty ugly, could be written more clearly
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if(Flags & HANDLING_2G_BOOST){
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if(gear == 1)
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accelMul = (Flags & HANDLING_1G_BOOST) ? 3.0f : 2.0f;
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else if(gear == 2)
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accelMul = 1.3f;
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else
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accelMul = 1.0f;
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}else if(Flags & HANDLING_1G_BOOST && gear == 1){
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accelMul = 3.0f;
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}else
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accelMul = 1.0f;
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}
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if(cheat)
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fCheat = 1.2f;
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else
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fCheat = 1.0f;
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float targetVelocity = Gears[gear].fMaxVelocity*speedMul*fCheat;
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float accel = (targetVelocity - fVelocity) * (fEngineAcceleration*accelMul) / Abs(targetVelocity);
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if(Abs(fVelocity) < Abs(Gears[gear].fMaxVelocity*fCheat))
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fAcceleration = gasPedal * accel * CTimer::GetTimeStep();
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else
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fAcceleration = 0.0f;
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}
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return fAcceleration;
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}
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