mirror of
https://github.com/OpenDriver2/REDRIVER2.git
synced 2024-11-22 10:22:48 +01:00
741 lines
16 KiB
C
741 lines
16 KiB
C
#include "driver2.h"
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#include "wheelforces.h"
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#include "cars.h"
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#include "main.h"
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#include "gamesnd.h"
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#include "debris.h"
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#include "handling.h"
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#include "cosmetic.h"
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#include "dr2roads.h"
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#include "mission.h"
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#include "pad.h"
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#include "sound.h"
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#include "glaunch.h"
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#include "system.h"
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#define GRAVITY_FORCE (-7456) // D1 has -10922
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struct CAR_LOCALS
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{
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LONGVECTOR4 vel;
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LONGVECTOR4 avel;
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int extraangulardamping;
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int aggressive;
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};
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HANDLING_TYPE handlingType[7] =
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{
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// frictionScaleRatio, aggressiveBraking, fourWheelDrive, autoBrakeOn
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{ 32, 1, 0, 1 },
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{ 29, 0, 0, 0 },
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{ 45, 1, 1, 0 },
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{ 55, 1, 1, 0 },
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{ 68, 1, 1, 0 },
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{ 32, 1, 0, 1 },
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{ 29, 0, 0, 0 }
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};
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// [D] [T]
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void StepCars(void)
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{
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CAR_DATA** ppCar;
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CAR_DATA** end;
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ppCar = active_car_list;
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end = active_car_list + num_active_cars;
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// step active cars
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while (ppCar < end)
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{
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StepOneCar(*ppCar);
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ControlCarRevs(*ppCar++);
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}
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}
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// [D] [T]
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void GetFrictionScalesDriver1(CAR_DATA* cp, CAR_LOCALS* cl, int* frontFS, int* rearFS)
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{
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int autoBrake;
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int q;
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_HANDLING_TYPE* hp;
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hp = &handlingType[cp->hndType];
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if (cp->thrust < 0)
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*frontFS = 1453;
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else if (cp->thrust < 1)
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*frontFS = 937;
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else
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*frontFS = 820;
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autoBrake = cp->hd.autoBrake;
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if (cp->wheelspin == 0 && hp->autoBrakeOn != 0 && autoBrake > 0 && cp->hd.wheel_speed > 0)
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{
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q = autoBrake << 1;
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if (autoBrake > 13)
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{
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autoBrake = 13;
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q = 26;
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}
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*frontFS += (q + autoBrake) * 15;
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D_CHECK_ERROR(hp->autoBrakeOn == 2, "invalid autoBrakeOn");
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}
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if ((cp->thrust < 0 && cp->hd.wheel_speed > 41943 && cp->hndType == 0) ||
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(cp->controlType == CONTROL_TYPE_CIV_AI && cp->ai.c.thrustState == 3 && cp->ai.c.ctrlState != 9))
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{
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cp->hd.wheel[3].locked = 1;
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cp->hd.wheel[2].locked = 1;
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cp->hd.wheel[1].locked = 1;
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cp->hd.wheel[0].locked = 1;
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}
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else
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{
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cp->hd.wheel[3].locked = 0;
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cp->hd.wheel[2].locked = 0;
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cp->hd.wheel[1].locked = 0;
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cp->hd.wheel[0].locked = 0;
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}
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if (cp->handbrake == 0)
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{
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if (cp->wheelspin != 0)
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*frontFS += 600;
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}
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else
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{
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if (cp->thrust > -1)
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cp->thrust = 0;
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if (cp->hd.wheel_speed < 1)
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*frontFS -= 375;
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else
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*frontFS += 656;
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cp->hd.wheel[1].locked = 1;
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cp->hd.wheel[3].locked = 1;
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cp->wheelspin = 0;
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}
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if (cp->hd.wheel_speed < 0 && cp->thrust > -1 && cp->handbrake == 0)
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{
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*frontFS -= 400;
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}
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*rearFS = 0x780 - *frontFS;
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if (cp->wheelspin != 0)
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{
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cp->thrust = FIXEDH(cp->ap.carCos->powerRatio * 5000);
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}
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if (cp->thrust < 0 && cp->hd.wheel_speed > 41943 && cl->aggressive != 0)
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{
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*frontFS = (*frontFS * 10) / 8;
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*rearFS = (*rearFS * 10) / 8;
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}
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else
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{
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if (cp->hd.wheel[0].onGrass == 0)
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*frontFS = (*frontFS * 36 - *frontFS) / 32;
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else
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*frontFS = (*frontFS * 40 - *frontFS) / 32;
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}
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*frontFS = (*frontFS * hp->frictionScaleRatio) / 32;
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*rearFS = (*rearFS * hp->frictionScaleRatio) / 32;
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if ((cp->hndType == 5) && (cp->ai.l.dstate == 5))
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{
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*frontFS = (*frontFS * 3) / 2;
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*rearFS = (*rearFS * 3) / 2;
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}
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int traction = cp->ap.carCos->traction;
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if (traction != 4096)
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{
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*frontFS = FIXEDH(*frontFS * traction);
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*rearFS = FIXEDH(*rearFS * traction);
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}
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}
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// [D] [T]
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void ConvertTorqueToAngularAcceleration(CAR_DATA* cp, CAR_LOCALS* cl)
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{
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int twistY, twistZ;
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int zd;
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int i;
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twistY = car_cosmetics[cp->ap.model].twistRateY;
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twistZ = car_cosmetics[cp->ap.model].twistRateZ;
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zd = (twistZ - twistY) * FIXEDH(cp->hd.where.m[0][2] * cp->hd.aacc[0] + cp->hd.where.m[1][2] * cp->hd.aacc[1] + cp->hd.where.m[2][2] * cp->hd.aacc[2]);
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for (i = 0; i < 3; i++)
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{
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cp->hd.aacc[i] = cp->hd.aacc[i] * twistY + FIXEDH(cp->hd.where.m[i][2] * zd - cl->avel[i] * 128);
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if (cl->extraangulardamping == 1)
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cp->hd.aacc[i] -= cl->avel[i] / 8;
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}
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}
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// [D] [T]
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void AddWheelForcesDriver1(CAR_DATA* cp, CAR_LOCALS* cl)
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{
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int oldCompression, newCompression;
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int dir;
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int forcefac;
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int angle;
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int lfx, lfz;
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int sidevel, slidevel;
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int susForce;
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int chan;
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WHEEL* wheel;
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int friction_coef;
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int oldSpeed;
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int wheelspd;
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LONGVECTOR4 wheelPos;
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LONGVECTOR4 surfacePoint;
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LONGVECTOR4 surfaceNormal;
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VECTOR force;
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LONGVECTOR4 pointVel;
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int frontFS;
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int rearFS;
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sdPlane* SurfacePtr;
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int i;
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int cdx, cdz;
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int sdx, sdz;
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CAR_COSMETICS* car_cos;
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int player_id;
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oldSpeed = cp->hd.speed * 3 >> 1;
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if (oldSpeed < 32)
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oldSpeed = oldSpeed * -72 + 3696;
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else
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oldSpeed = 1424 - oldSpeed;
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dir = cp->hd.direction;
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cdx = RSIN(dir);
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cdz = RCOS(dir);
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dir += cp->wheel_angle;
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sdx = RSIN(dir);
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sdz = RCOS(dir);
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player_id = GetPlayerId(cp);
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car_cos = &car_cosmetics[cp->ap.model];
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GetFrictionScalesDriver1(cp, cl, &frontFS, &rearFS);
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cp->hd.front_vel = 0;
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cp->hd.rear_vel = 0;
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if (oldSpeed > 3300)
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oldSpeed = 3300;
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i = 3;
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wheel = cp->hd.wheel + 3;
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do {
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gte_ldv0(&car_cos->wheelDisp[i]);
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gte_rtv0tr();
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gte_stlvnl(wheelPos);
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newCompression = FindSurfaceD2((VECTOR*)&wheelPos, (VECTOR*)&surfaceNormal, (VECTOR*)&surfacePoint, &SurfacePtr);
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friction_coef = (newCompression * (32400 - wetness) >> 15) + 500;
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if (SurfacePtr != NULL)
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wheel->onGrass = SurfacePtr->surface == SURF_GRASS;
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else
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wheel->onGrass = 0;
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if (SurfacePtr)
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{
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switch (SurfacePtr->surface)
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{
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case SURF_GRASS:
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case SURF_WATER:
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case SURF_DEEPWATER:
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case SURF_SAND:
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wheel->surface = 0x80;
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break;
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default:
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wheel->surface = 0;
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}
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// [A] indication of Event surface which means we can't add tyre tracks for that wheel
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if (SurfacePtr->surface - 16U < 16)
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wheel->surface |= 0x8;
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switch (SurfacePtr->surface)
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{
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case SURF_ALLEY:
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wheel->surface |= 0x2;
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break;
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case SURF_WATER:
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case SURF_DEEPWATER:
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wheel->surface |= 0x1;
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break;
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case SURF_SAND:
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wheel->surface |= 0x3;
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break;
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}
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}
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else
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{
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wheel->surface = 0;
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}
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oldCompression = wheel->susCompression;
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newCompression = FIXEDH((surfacePoint[1] - wheelPos[1]) * surfaceNormal[1]) + 14;
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if (newCompression < 0)
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newCompression = 0;
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if (newCompression > 800)
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newCompression = 12;
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// play wheel collision sound
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// and apply vibration to player controller
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if (cp->controlType == CONTROL_TYPE_PLAYER)
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{
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if (ABS(newCompression - oldCompression) > 12 && (i & 1U) != 0)
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{
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chan = GetFreeChannel(0);
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if(chan > -1)
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{
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if (NumPlayers > 1 && NoPlayerControl == 0)
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SetPlayerOwnsChannel(chan, player_id);
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Start3DSoundVolPitch(chan, SOUND_BANK_SFX, 1, cp->hd.where.t[0], cp->hd.where.t[1], cp->hd.where.t[2], -2500, 400);
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SetChannelPosition3(chan, (VECTOR*)cp->hd.where.t, NULL, -2500, 400, 0);
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}
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}
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if (newCompression >= 65)
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SetPadVibration(*cp->ai.padid, 1);
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else if (newCompression >= 35)
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SetPadVibration(*cp->ai.padid, 2);
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else if (newCompression > 25)
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SetPadVibration(*cp->ai.padid, 3);
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}
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if (newCompression > 42)
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newCompression = 42;
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if (newCompression == 0 && oldCompression == 0)
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{
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wheel->susCompression = 0;
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}
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else
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{
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wheelPos[2] = wheelPos[2] - cp->hd.where.t[2];
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wheelPos[1] = wheelPos[1] - cp->hd.where.t[1];
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wheelPos[0] = wheelPos[0] - cp->hd.where.t[0];
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force.vz = 0;
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force.vx = 0;
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pointVel[0] = FIXEDH(cl->avel[1] * wheelPos[2] - cl->avel[2] * wheelPos[1]) + cl->vel[0];
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pointVel[2] = FIXEDH(cl->avel[0] * wheelPos[1] - cl->avel[1] * wheelPos[0]) + cl->vel[2];
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// that's our spring
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susForce = newCompression * 230 - oldCompression * 100;
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if (wheel->locked)
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{
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dir = ratan2(pointVel[0] >> 6, pointVel[2] >> 6);
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lfx = RSIN(dir);
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lfz = RCOS(dir);
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if (ABS(pointVel[0]) + ABS(pointVel[2]) < 8000)
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{
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surfaceNormal[0] = 0;
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surfaceNormal[1] = ONE;
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surfaceNormal[2] = 0;
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}
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}
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else
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{
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if (i & 1)
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{
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lfz = -cdx;
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lfx = cdz;
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}
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else
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{
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lfz = -sdx;
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lfx = sdz;
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}
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}
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slidevel = (pointVel[0] / 64) * (lfx / 64) + (pointVel[2] / 64) * (lfz / 64);
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wheelspd = ABS((oldSpeed / 64) * (slidevel / 64));
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if (slidevel > 50000)
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{
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slidevel = 12500;
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}
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else if (slidevel < -50000)
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{
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slidevel = -12500;
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}
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else
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{
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slidevel = FIXEDH(oldSpeed * slidevel);
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if (slidevel > 12500)
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slidevel = 12500;
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if (slidevel < -12500)
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slidevel = -12500;
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}
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if ((i & 1U) != 0)
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{
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// rear wheels
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if (wheel->locked == 0)
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{
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sidevel = FIXEDH(rearFS * slidevel);
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if (handlingType[cp->hndType].autoBrakeOn != 0 && 0 < sidevel * cp->wheel_angle)
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cp->hd.autoBrake = -1;
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force.vx = -lfz * cp->thrust;
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force.vz = lfx * cp->thrust;
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}
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else
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{
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sidevel = FixHalfRound(frontFS * slidevel, 14);
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}
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if (cp->hd.rear_vel < wheelspd)
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cp->hd.rear_vel = wheelspd;
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}
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else
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{
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// front wheels
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sidevel = frontFS * slidevel + 2048 >> 12;
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if (wheel->locked)
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{
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sidevel = (frontFS * slidevel + 2048 >> 13) + sidevel >> 1;
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forcefac = FixHalfRound(FIXEDH(-sidevel * lfx) * sdz - FIXEDH(-sidevel * lfz) * sdx, 11);
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force.vx = forcefac * sdz;
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force.vz = -forcefac * sdx;
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}
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else
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{
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if (cp->controlType == CONTROL_TYPE_PURSUER_AI)
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{
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force.vx = sdx * cp->thrust;
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force.vz = sdz * cp->thrust;
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}
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}
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if (cp->hd.front_vel < wheelspd)
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cp->hd.front_vel = wheelspd;
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}
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force.vx += (susForce * surfaceNormal[0] - sidevel * lfx) - cl->vel[0] * 12;
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force.vz += (susForce * surfaceNormal[2] - sidevel * lfz) - cl->vel[2] * 12;
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// apply speed reduction by water
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if ((wheel->surface & 7) == 1)
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{
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force.vx -= cl->vel[0] * 75;
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force.vz -= cl->vel[2] * 75;
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}
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angle = cp->hd.where.m[1][1];
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if (angle < 2048)
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{
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angle = 4096 - angle;
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if (angle <= 4096)
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angle = 4096 - FIXEDH(angle * angle);
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else
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angle = 0;
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friction_coef = FIXEDH(friction_coef * angle);
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}
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if (surfaceNormal[1] < 3276)
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friction_coef = friction_coef * surfaceNormal[1] * 5 >> 0xe;
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force.vy = FIXEDH(susForce * surfaceNormal[1] - cl->vel[1] * 12);
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force.vx = FIXEDH(force.vx) * friction_coef >> 0xc;
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force.vz = FIXEDH(force.vz) * friction_coef >> 0xc;
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// pursuer cars have more stability
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if (cp->controlType == CONTROL_TYPE_PURSUER_AI)
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{
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if (gCopDifficultyLevel == 2)
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wheelPos[1] = (wheelPos[1] * 12) / 32;
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else
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wheelPos[1] = (wheelPos[1] * 19) / 32;
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}
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cp->hd.acc[0] += force.vx;
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cp->hd.acc[1] += force.vy;
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cp->hd.acc[2] += force.vz;
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cp->hd.aacc[0] += FIXEDH(wheelPos[1] * force.vz - wheelPos[2] * force.vy);
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cp->hd.aacc[1] += FIXEDH(wheelPos[2] * force.vx - wheelPos[0] * force.vz);
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cp->hd.aacc[2] += FIXEDH(wheelPos[0] * force.vy - wheelPos[1] * force.vx);
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wheel->susCompression = newCompression;
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}
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wheel--;
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i--;
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} while (i >= 0);
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if (cp->hd.wheel[1].susCompression == 0 && cp->hd.wheel[3].susCompression == 0)
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{
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if (cp->thrust >= 1)
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cp->hd.wheel_speed = 1703936 + 0x4000;
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else if (cp->thrust <= -1)
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cp->hd.wheel_speed = -1245184 + 0x4000;
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else
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cp->hd.wheel_speed = 0;
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}
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else
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{
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cp->hd.wheel_speed = cdz / 64 * (cl->vel[2] / 64) + cdx / 64 * (cl->vel[0] / 64);
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}
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}
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// [D] [T]
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void StepOneCar(CAR_DATA* cp)
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{
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static int frictionLimit[6] = {
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1005 * ONE, 6030 * ONE,
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1005 * ONE, 5025 * ONE,
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1884 * ONE, 5025 * ONE
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};
|
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|
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volatile int impulse;
|
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CAR_COSMETICS* car_cos;
|
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int friToUse;
|
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int lift;
|
|
int a, b, speed;
|
|
int count, i;
|
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CAR_LOCALS _cl;
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LONGVECTOR4 deepestNormal, deepestLever, deepestPoint;
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LONGVECTOR4 pointPos, surfacePoint, surfaceNormal;
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LONGVECTOR4 lever, reaction;
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VECTOR direction;
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sdPlane* SurfacePtr;
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if (cp->controlType == CONTROL_TYPE_NONE)
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return;
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SurfacePtr = NULL;
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_cl.aggressive = handlingType[cp->hndType].aggressiveBraking;
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_cl.extraangulardamping = 0;
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for (i = 0; i < 3; i++)
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{
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_cl.vel[i] = cp->st.n.linearVelocity[i];
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_cl.avel[i] = cp->st.n.angularVelocity[i];
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cp->st.n.fposition[i] = (cp->st.n.fposition[i] & 0xF) + cp->hd.where.t[i] * 16;
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}
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cp->hd.acc[0] = 0;
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cp->hd.acc[1] = GRAVITY_FORCE; // apply gravity
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cp->hd.acc[2] = 0;
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// calculate car speed
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a = ABS(FIXEDH(_cl.vel[0]));
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b = ABS(FIXEDH(_cl.vel[2]));
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if (a < b)
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speed = b + a / 2;
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else
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speed = a + b / 2;
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cp->hd.speed = speed;
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car_cos = cp->ap.carCos;
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lift = 0;
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gte_SetRotMatrix(&cp->hd.where);
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gte_SetTransMatrix(&cp->hd.where);
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count = 12;
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if (cp->hd.where.m[1][1] > 2048)
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{
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if(cp->controlType == CONTROL_TYPE_CIV_AI)
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count = (cp->totalDamage != 0) * 4;
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else
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count = 4;
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}
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count--;
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// calculate lifting factor
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while (count >= 0)
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{
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gte_ldv0(&car_cos->cPoints[count]);
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gte_rtv0tr();
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gte_stlvnl(pointPos);
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lever[0] = pointPos[0] - cp->hd.where.t[0];
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lever[1] = pointPos[1] - cp->hd.where.t[1];
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lever[2] = pointPos[2] - cp->hd.where.t[2];
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FindSurfaceD2((VECTOR*)pointPos, (VECTOR*)surfaceNormal, (VECTOR*)&surfacePoint, &SurfacePtr);
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if ((surfacePoint[1] - pointPos[1]) - 1U < 799)
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{
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int newLift;
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newLift = FIXEDH((surfacePoint[1] - pointPos[1]) * surfaceNormal[1]);
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if (lift < newLift)
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{
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friToUse = 0;
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deepestNormal[0] = surfaceNormal[0];
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deepestNormal[1] = surfaceNormal[1];
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deepestNormal[2] = surfaceNormal[2];
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deepestLever[0] = lever[0];
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deepestLever[1] = lever[1];
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deepestLever[2] = lever[2];
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deepestPoint[0] = surfacePoint[0];
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deepestPoint[1] = surfacePoint[1];
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deepestPoint[2] = surfacePoint[2];
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lift = newLift;
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if (count > 3)
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friToUse = 3;
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}
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}
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count--;
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}
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// do lifting
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if (lift != 0)
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{
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int strikeVel;
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int componant;
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|
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int lever_dot_n;
|
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int twistY;
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int displacementsquared;
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|
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lever[0] = FIXEDH(_cl.avel[1] * deepestLever[2] - _cl.avel[2] * deepestLever[1]) + _cl.vel[0];
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lever[1] = FIXEDH(_cl.avel[2] * deepestLever[0] - _cl.avel[0] * deepestLever[2]) + _cl.vel[1];
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lever[2] = FIXEDH(_cl.avel[0] * deepestLever[1] - _cl.avel[1] * deepestLever[0]) + _cl.vel[2];
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twistY = car_cos->twistRateY;
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lever_dot_n = FIXEDH(deepestLever[0] * deepestNormal[0] + deepestLever[1] * deepestNormal[1] + deepestLever[2] * deepestNormal[2]);
|
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displacementsquared = FIXEDH(((deepestLever[0] * deepestLever[0] + deepestLever[1] * deepestLever[1] + deepestLever[2] * deepestLever[2]) - lever_dot_n * lever_dot_n) * twistY) + 4096;
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strikeVel = (lever[0] >> 6) * (deepestNormal[0] >> 6) + (lever[1] >> 6) * (deepestNormal[1] >> 6) + (lever[2] >> 6) * (deepestNormal[2] >> 6);
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impulse = (strikeVel / displacementsquared) * -2048;
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|
|
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// apply friction
|
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componant = 2;
|
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do {
|
|
int loss;
|
|
int limit;
|
|
|
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limit = frictionLimit[friToUse + 2 - componant];
|
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loss = lever[componant] * 67;
|
|
|
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if (loss <= limit)
|
|
{
|
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if (loss < -limit)
|
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limit = -limit;
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else
|
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limit = loss;
|
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}
|
|
|
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reaction[componant] = FIXEDH(impulse * deepestNormal[componant] - limit);
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componant--;
|
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} while (componant >= 0);
|
|
|
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if (impulse > 20000)
|
|
{
|
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if (gNight == 1)
|
|
{
|
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direction.vx = 0;
|
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direction.vy = 50;
|
|
direction.vz = 0;
|
|
|
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Setup_Sparks((VECTOR*)&deepestPoint, &direction, 15, 1);
|
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}
|
|
else
|
|
{
|
|
direction.vx = 0;
|
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direction.vy = 40;
|
|
direction.vz = 0;
|
|
|
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Setup_Debris((VECTOR*)&deepestPoint, &direction, 10, 0);
|
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}
|
|
|
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if (SurfacePtr && (SurfacePtr->surface != SURF_DEEPWATER) && (SurfacePtr->surface != SURF_WATER))
|
|
{
|
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CollisionSound(GetPlayerId(cp), cp, (impulse / 6 + (impulse >> 0x1f) >> 3) - (impulse >> 0x1f), 0);
|
|
}
|
|
}
|
|
|
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cp->hd.acc[0] += reaction[0];
|
|
cp->hd.acc[1] += reaction[1];
|
|
cp->hd.acc[2] += reaction[2];
|
|
|
|
cp->hd.aacc[0] += FIXEDH(deepestLever[1] * reaction[2] - deepestLever[2] * reaction[1]);
|
|
cp->hd.aacc[1] += FIXEDH(deepestLever[2] * reaction[0] - deepestLever[0] * reaction[2]);
|
|
cp->hd.aacc[2] += FIXEDH(deepestLever[0] * reaction[1] - deepestLever[1] * reaction[0]);
|
|
|
|
//if (lift != 0)
|
|
{
|
|
lever[0] = FIXEDH(lift * deepestNormal[0]);
|
|
lever[1] = FIXEDH(lift * deepestNormal[1]);
|
|
lever[2] = FIXEDH(lift * deepestNormal[2]);
|
|
|
|
cp->hd.where.t[0] += lever[0];
|
|
cp->hd.where.t[1] += lever[1];
|
|
cp->hd.where.t[2] += lever[2];
|
|
|
|
cp->st.n.fposition[0] += lever[0] * 16;
|
|
cp->st.n.fposition[1] += lever[1] * 16;
|
|
cp->st.n.fposition[2] += lever[2] * 16;
|
|
|
|
gte_SetTransMatrix(&cp->hd.where);
|
|
|
|
_cl.extraangulardamping = 1;
|
|
|
|
if (lift > 120)
|
|
cp->st.n.linearVelocity[1] = 0;
|
|
}
|
|
}
|
|
|
|
AddWheelForcesDriver1(cp, &_cl);
|
|
ConvertTorqueToAngularAcceleration(cp, &_cl);
|
|
|
|
cp->hd.mayBeColliding = 0;
|
|
} |