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initial work on vehicles
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parent
d1b2dd2831
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18 changed files with 674 additions and 617 deletions
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@ -21,11 +21,7 @@
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#include "Pickups.h"
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#include "Physical.h"
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//--MIAMI: file done
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#ifdef WALLCLIMB_CHEAT
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bool gGravityCheat;
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#endif
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CPhysical::CPhysical(void)
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@ -359,7 +355,7 @@ CPhysical::ProcessEntityCollision(CEntity *ent, CColPoint *colpoints)
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return numSpheres;
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}
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// --MIAMI: Proof-read once
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//--LCS: done
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void
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CPhysical::ProcessControl(void)
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{
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@ -427,7 +423,7 @@ CPhysical::GetSpeed(const CVector &r)
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return m_vecMoveSpeed + m_vecMoveFriction + CrossProduct(m_vecTurnFriction + m_vecTurnSpeed, r);
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}
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// --MIAMI: Proof-read once
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//--LCS: done
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void
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CPhysical::ApplyMoveSpeed(void)
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{
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@ -437,13 +433,13 @@ CPhysical::ApplyMoveSpeed(void)
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GetMatrix().Translate(m_vecMoveSpeed * CTimer::GetTimeStep());
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}
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// --MIAMI: Proof-read once
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//--LCS: done
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void
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CPhysical::ApplyTurnSpeed(void)
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{
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if(bIsFrozen){
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m_vecTurnSpeed = CVector(0.0f, 0.0f, 0.0f);
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}else{
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}else if(!m_vecTurnSpeed.IsZero()){
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// Move the coordinate axes by their speed
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// Note that this denormalizes the matrix
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CVector turnvec = m_vecTurnSpeed*CTimer::GetTimeStep();
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@ -453,29 +449,36 @@ CPhysical::ApplyTurnSpeed(void)
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}
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}
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// --MIAMI: Proof-read once
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//--LCS: done
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void
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CPhysical::ApplyMoveForce(float jx, float jy, float jz)
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{
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m_vecMoveSpeed += CVector(jx, jy, jz)*(1.0f/m_fMass);
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m_vecTurnSpeed.x = clamp(m_vecTurnSpeed.x, -4.0f, 4.0f);
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m_vecTurnSpeed.y = clamp(m_vecTurnSpeed.y, -4.0f, 4.0f);
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m_vecTurnSpeed.z = clamp(m_vecTurnSpeed.z, -4.0f, 4.0f);
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}
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// --MIAMI: Proof-read once
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//--LCS: done
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void
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CPhysical::ApplyTurnForce(float jx, float jy, float jz, float px, float py, float pz)
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{
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CVector com = Multiply3x3(m_matrix, m_vecCentreOfMass);
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CVector turnimpulse = CrossProduct(CVector(px, py, pz)-com, CVector(jx, jy, jz));
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m_vecTurnSpeed += turnimpulse*(1.0f/m_fTurnMass);
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m_vecTurnSpeed.x = clamp(m_vecTurnSpeed.x, -4.0f, 4.0f);
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m_vecTurnSpeed.y = clamp(m_vecTurnSpeed.y, -4.0f, 4.0f);
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m_vecTurnSpeed.z = clamp(m_vecTurnSpeed.z, -4.0f, 4.0f);
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}
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//--LCS: done
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void
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CPhysical::ApplyFrictionMoveForce(float jx, float jy, float jz)
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{
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m_vecMoveFriction += CVector(jx, jy, jz)*(1.0f/m_fMass);
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}
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// --MIAMI: Proof-read once
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//--LCS: done
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void
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CPhysical::ApplyFrictionTurnForce(float jx, float jy, float jz, float px, float py, float pz)
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{
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@ -484,7 +487,7 @@ CPhysical::ApplyFrictionTurnForce(float jx, float jy, float jz, float px, float
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m_vecTurnFriction += turnimpulse*(1.0f/m_fTurnMass);
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}
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// --MIAMI: Proof-read once
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//--LCS: done
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bool
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CPhysical::ApplySpringCollision(float springConst, CVector &springDir, CVector &point, float springRatio, float bias)
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{
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@ -498,16 +501,16 @@ CPhysical::ApplySpringCollision(float springConst, CVector &springDir, CVector &
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return true;
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}
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// --MIAMI: Proof-read once
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//--LCS: done
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bool
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CPhysical::ApplySpringCollisionAlt(float springConst, CVector &springDir, CVector &point, float springRatio, float bias, CVector &forceDir)
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CPhysical::ApplySpringCollisionAlt(float springConst, CVector &springDir, CVector &point, float springRatio, float bias, CVector &forceDir, float &impulse)
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{
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float compression = 1.0f - springRatio;
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if(compression > 0.0f){
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if(DotProduct(springDir, forceDir) > 0.0f)
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forceDir *= -1.0f;
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float step = Min(CTimer::GetTimeStep(), 3.0f);
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float impulse = GRAVITY*m_fMass*step * springConst * compression * bias*2.0f;
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impulse = GRAVITY*m_fMass*step * springConst * compression * bias*2.0f;
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if(bIsHeavy)
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impulse *= 0.75f;
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ApplyMoveForce(forceDir*impulse);
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@ -516,58 +519,75 @@ CPhysical::ApplySpringCollisionAlt(float springConst, CVector &springDir, CVecto
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return true;
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}
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// --MIAMI: Proof-read once
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float DAMPING_LIMIT_OF_SPRING_FORCE = 0.999f;
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float DAMPING_LIMIT_IN_FRAME= 0.25f;
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//--LCS: done
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// What exactly is speed?
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bool
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CPhysical::ApplySpringDampening(float damping, CVector &springDir, CVector &point, CVector &speed)
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CPhysical::ApplySpringDampening(float damping, float dampingLimit, CVector &springDir, CVector &point, CVector &speed)
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{
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float speedA = DotProduct(speed, springDir);
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float speedB = DotProduct(GetSpeed(point), springDir);
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float step = Min(CTimer::GetTimeStep(), 3.0f);
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float impulse = -damping * (speedA + speedB)/2.0f * m_fMass * step * 0.53f;
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damping *= step;
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if(bIsHeavy)
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impulse *= 2.0f;
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damping *= 2.0f;
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damping = clamp(damping, -DAMPING_LIMIT_IN_FRAME, DAMPING_LIMIT_IN_FRAME);
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// what is this?
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float a = m_fTurnMass / ((point.MagnitudeSqr() + 1.0f) * 2.0f * m_fMass);
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a = Min(a, 1.0f);
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float b = Abs(impulse / (speedB * m_fMass));
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if(a < b)
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impulse *= a/b;
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float fSpeed = -speedA * damping;
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if(fSpeed > 0.0f && fSpeed+speedB > 0.0f){
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if(speedB < 0.0f)
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fSpeed = -speedB;
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else
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fSpeed = 0.0f;
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}else if(fSpeed < 0.0f && fSpeed+speedB < 0.0f){
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if(speedB > 0.0f)
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fSpeed = -speedB;
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else
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fSpeed = 0.0f;
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}
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CVector com = Multiply3x3(m_matrix, m_vecCentreOfMass);
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float impulse = fSpeed*GetMass(point-com, springDir);
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float limit = Abs(dampingLimit)*DAMPING_LIMIT_OF_SPRING_FORCE;
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if(impulse > limit)
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impulse = limit;
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ApplyMoveForce(springDir*impulse);
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ApplyTurnForce(springDir*impulse, point);
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return true;
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}
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//--LCS: done
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void
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CPhysical::ApplyGravity(void)
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{
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if (!bAffectedByGravity)
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return;
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#ifdef WALLCLIMB_CHEAT
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if (gGravityCheat && this == FindPlayerVehicle()) {
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static CVector v1(0.0f, 0.0f, 1.0f), v2(0.0f, 0.0f, 1.0f);
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CVector prop = GetPosition() - (GetUp() + GetUp());
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static CVector gravityUp(0.0f, 0.0f, 1.0f), surfaceUp(0.0f, 0.0f, 1.0f);
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CVector belowCar = GetPosition() - 2.0f*GetUp();
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CColPoint point;
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CEntity* entity;
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if (CWorld::ProcessLineOfSight(GetPosition(), prop, point, entity, true, false, false, false, false, false))
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v2 = point.normal;
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if (CWorld::ProcessLineOfSight(GetPosition(), belowCar, point, entity, true, false, false, false, false, false))
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surfaceUp = point.normal;
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else
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v2 = CVector(0.0f, 0.0f, 1.0f);
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float coef = clamp(CTimer::GetTimeStep() * 0.5f, 0.05f, 0.8f);
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v1 = v1 * (1.0f - coef) + v2 * coef;
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if (v1.MagnitudeSqr() < 0.1f)
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v1 = CVector(0.0f, 0.0f, 1.0f);
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surfaceUp = CVector(0.0f, 0.0f, 1.0f);
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float t = clamp(CTimer::GetTimeStep() * 0.5f, 0.05f, 0.8f);
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gravityUp = gravityUp * (1.0f - t) + surfaceUp * t;
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if (gravityUp.MagnitudeSqr() < 0.1f)
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gravityUp = CVector(0.0f, 0.0f, 1.0f);
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else
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v1.Normalise();
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m_vecMoveSpeed -= GRAVITY * CTimer::GetTimeStep() * v1;
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gravityUp.Normalise();
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m_vecMoveSpeed -= GRAVITY * CTimer::GetTimeStep() * gravityUp;
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return;
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}
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#endif
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m_vecMoveSpeed.z -= GRAVITY * CTimer::GetTimeStep();
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}
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//--LCS: done
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void
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CPhysical::ApplyFriction(void)
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{
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@ -577,7 +597,7 @@ CPhysical::ApplyFriction(void)
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m_vecTurnFriction = CVector(0.0f, 0.0f, 0.0f);
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}
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// --MIAMI: Proof-read once
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//--LCS: done
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void
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CPhysical::ApplyAirResistance(void)
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{
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@ -585,8 +605,8 @@ CPhysical::ApplyAirResistance(void)
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float f = Pow(m_fAirResistance, CTimer::GetTimeStep());
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m_vecMoveSpeed *= f;
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m_vecTurnSpeed *= f;
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}else if(GetStatus() != STATUS_GHOST){
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float f = Pow(1.0f/Abs(1.0f + m_fAirResistance*0.5f*m_vecMoveSpeed.MagnitudeSqr()), CTimer::GetTimeStep());
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}else{
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float f = Pow(1.0f - m_fAirResistance*m_vecMoveSpeed.Magnitude(), CTimer::GetTimeStep());
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m_vecMoveSpeed *= f;
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m_vecTurnSpeed *= 0.99f;
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}
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@ -2310,3 +2330,44 @@ CPhysical::ProcessCollision(void)
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m_fElasticity = savedElasticity;
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RemoveAndAdd();
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}
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// TEMP old VC code until bikes are done
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bool
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CPhysical::ApplySpringCollisionAlt(float springConst, CVector &springDir, CVector &point, float springRatio, float bias, CVector &forceDir)
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{
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float compression = 1.0f - springRatio;
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if(compression > 0.0f){
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if(DotProduct(springDir, forceDir) > 0.0f)
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forceDir *= -1.0f;
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float step = Min(CTimer::GetTimeStep(), 3.0f);
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float impulse = GRAVITY*m_fMass*step * springConst * compression * bias*2.0f;
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if(bIsHeavy)
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impulse *= 0.75f;
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ApplyMoveForce(forceDir*impulse);
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ApplyTurnForce(forceDir*impulse, point);
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}
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return true;
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}
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bool
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CPhysical::ApplySpringDampening(float damping, CVector &springDir, CVector &point, CVector &speed)
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{
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float speedA = DotProduct(speed, springDir);
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float speedB = DotProduct(GetSpeed(point), springDir);
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float step = Min(CTimer::GetTimeStep(), 3.0f);
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float impulse = -damping * (speedA + speedB)/2.0f * m_fMass * step * 0.53f;
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if(bIsHeavy)
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impulse *= 2.0f;
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// what is this?
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float a = m_fTurnMass / ((point.MagnitudeSqr() + 1.0f) * 2.0f * m_fMass);
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a = Min(a, 1.0f);
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float b = Abs(impulse / (speedB * m_fMass));
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if(a < b)
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impulse *= a/b;
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ApplyMoveForce(springDir*impulse);
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ApplyTurnForce(springDir*impulse, point);
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return true;
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}
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