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-rw-r--r--src/vehicles/HandlingMgr.h2
-rw-r--r--src/vehicles/Vehicle.cpp198
-rw-r--r--src/vehicles/Vehicle.h6
3 files changed, 158 insertions, 48 deletions
diff --git a/src/vehicles/HandlingMgr.h b/src/vehicles/HandlingMgr.h
index 958e2351..2627fbae 100644
--- a/src/vehicles/HandlingMgr.h
+++ b/src/vehicles/HandlingMgr.h
@@ -119,7 +119,9 @@ VALIDATE_SIZE(tHandlingData, 0xD8);
class cHandlingDataMgr
{
float field_0; // unused it seems
+public:
float field_4; // wheel related
+private:
float field_8; //
float field_C; // unused it seems
float field_10; //
diff --git a/src/vehicles/Vehicle.cpp b/src/vehicles/Vehicle.cpp
index c541bae5..13e02566 100644
--- a/src/vehicles/Vehicle.cpp
+++ b/src/vehicles/Vehicle.cpp
@@ -131,6 +131,47 @@ CVehicle::~CVehicle()
}
void
+CVehicle::SetModelIndex(uint32 id)
+{
+ CEntity::SetModelIndex(id);
+ m_aExtras[0] = CVehicleModelInfo::ms_compsUsed[0];
+ m_aExtras[1] = CVehicleModelInfo::ms_compsUsed[1];
+ m_nNumMaxPassengers = CVehicleModelInfo::GetMaximumNumberOfPassengersFromNumberOfDoors(id);
+}
+
+bool
+CVehicle::SetupLighting(void)
+{
+ ActivateDirectional();
+ SetAmbientColoursForPedsCarsAndObjects();
+
+ if(bRenderScorched){
+ WorldReplaceNormalLightsWithScorched(Scene.world, 0.1f);
+ }else{
+ CVector coors = GetPosition();
+ float lighting = CPointLights::GenerateLightsAffectingObject(&coors);
+ if(!bHasBlip && lighting != 1.0f){
+ SetAmbientAndDirectionalColours(lighting);
+ return true;
+ }
+ }
+
+ return false;
+}
+
+void
+CVehicle::RemoveLighting(bool reset)
+{
+ CRenderer::RemoveVehiclePedLights(this, reset);
+}
+
+float
+CVehicle::GetHeightAboveRoad(void)
+{
+ return -1.0f * GetColModel()->boundingBox.min.z;
+}
+
+void
CVehicle::FlyingControl(eFlightModel flightModel)
{
switch(flightModel){
@@ -192,47 +233,127 @@ CVehicle::FlyingControl(eFlightModel flightModel)
}
void
-CVehicle::SetModelIndex(uint32 id)
+CVehicle::ProcessWheel(CVector &wheelFwd, CVector &wheelRight, CVector &wheelContactSpeed, CVector &wheelContactPoint,
+ int32 wheelsOnGround, float thrust, float brake, float adhesion, int8 wheelId, float *wheelSpeed, tWheelState *wheelState, uint16 wheelStatus)
{
- CEntity::SetModelIndex(id);
- m_aExtras[0] = CVehicleModelInfo::ms_compsUsed[0];
- m_aExtras[1] = CVehicleModelInfo::ms_compsUsed[1];
- m_nNumMaxPassengers = CVehicleModelInfo::GetMaximumNumberOfPassengersFromNumberOfDoors(id);
-}
+ // BUG: using statics here is probably a bad idea
+ static bool bAlreadySkidding = false; // this is never reset
+ static bool bBraking;
+ static bool bDriving;
+
+ // how much force we want to apply in these axes
+ float fwd = 0.0f;
+ float right = 0.0f;
+
+ bBraking = brake != 0.0f;
+ if(bBraking)
+ thrust = 0.0f;
+ bDriving = thrust != 0.0f;
+
+ float contactSpeedFwd = DotProduct(wheelContactSpeed, wheelFwd);
+ float contactSpeedRight = DotProduct(wheelContactSpeed, wheelRight);
+
+ if(*wheelState != WHEEL_STATE_0)
+ bAlreadySkidding = true;
+ *wheelState = WHEEL_STATE_0;
+
+ adhesion *= CTimer::GetTimeStep();
+ if(bAlreadySkidding)
+ adhesion *= m_handling->fTractionLoss;
+
+ // moving sideways
+ if(contactSpeedRight != 0.0f){
+ // exert opposing force
+ right = -contactSpeedRight/wheelsOnGround;
+
+ if(wheelStatus == WHEEL_STATUS_BURST){
+ float fwdspeed = min(contactSpeedFwd, 0.3f);
+ right += fwdspeed * CGeneral::GetRandomNumberInRange(-0.1f, 0.1f);
+ }
+ }
-bool
-CVehicle::SetupLighting(void)
-{
- ActivateDirectional();
- SetAmbientColoursForPedsCarsAndObjects();
+ if(bDriving){
+ fwd = thrust;
- if(bRenderScorched){
- WorldReplaceNormalLightsWithScorched(Scene.world, 0.1f);
- }else{
- CVector coors = GetPosition();
- float lighting = CPointLights::GenerateLightsAffectingObject(&coors);
- if(!bHasBlip && lighting != 1.0f){
- SetAmbientAndDirectionalColours(lighting);
- return true;
+ // limit sideways force (why?)
+ if(right > 0.0f){
+ if(right > adhesion)
+ right = adhesion;
+ }else{
+ if(right < -adhesion)
+ right = -adhesion;
+ }
+ }else if(contactSpeedFwd != 0.0f){
+ fwd = -contactSpeedFwd/wheelsOnGround;
+
+ if(!bBraking){
+ if(m_fGasPedal < 0.01f){
+ if(GetModelIndex() == MI_RCBANDIT)
+ brake = 0.2f * mod_HandlingManager.field_4 / m_fMass;
+ else
+ brake = mod_HandlingManager.field_4 / m_fMass;
+ }
+ }
+
+ if(brake > adhesion){
+ if(fabs(contactSpeedFwd) > 0.005f)
+ *wheelState = WHEEL_STATE_STATIC;
+ }else {
+ if(fwd > 0.0f){
+ if(fwd > brake)
+ fwd = brake;
+ }else{
+ if(fwd < -brake)
+ fwd = -brake;
+ }
}
}
- return false;
-}
+ if(sq(adhesion) < sq(right) + sq(fwd)){
+ if(*wheelState != WHEEL_STATE_STATIC){
+ if(bDriving && contactSpeedFwd < 0.2f)
+ *wheelState = WHEEL_STATE_1;
+ else
+ *wheelState = WHEEL_STATE_2;
+ }
-void
-CVehicle::RemoveLighting(bool reset)
-{
- CRenderer::RemoveVehiclePedLights(this, reset);
+ float l = sqrt(sq(right) + sq(fwd));
+ float tractionLoss = bAlreadySkidding ? 1.0f : m_handling->fTractionLoss;
+ right *= adhesion * tractionLoss / l;
+ fwd *= adhesion * tractionLoss / l;
+ }
+
+ if(fwd != 0.0f || right != 0.0f){
+ CVector direction = fwd*wheelFwd + right*wheelRight;
+ float speed = direction.Magnitude();
+ direction.Normalise();
+
+ float impulse = speed*m_fMass;
+ float turnImpulse = speed*GetMass(wheelContactPoint, direction);
+
+ ApplyMoveForce(impulse * direction);
+ ApplyTurnForce(turnImpulse * direction, wheelContactPoint);
+ }
}
float
-CVehicle::GetHeightAboveRoad(void)
+CVehicle::ProcessWheelRotation(tWheelState state, const CVector &fwd, const CVector &speed, float radius)
{
- return -1.0f * GetColModel()->boundingBox.min.z;
+ float angularVelocity;
+ switch(state){
+ case WHEEL_STATE_1:
+ angularVelocity = -1.1f; // constant speed forward
+ break;
+ case WHEEL_STATE_STATIC:
+ angularVelocity = 0.0f; // not moving
+ break;
+ default:
+ angularVelocity = -DotProduct(fwd, speed) / radius; // forward speed
+ break;
+ }
+ return angularVelocity * CTimer::GetTimeStep();
}
-
void
CVehicle::ExtinguishCarFire(void)
{
@@ -269,24 +390,6 @@ CVehicle::ProcessDelayedExplosion(void)
}
}
-float
-CVehicle::ProcessWheelRotation(tWheelState state, const CVector &fwd, const CVector &speed, float radius)
-{
- float angularVelocity;
- switch(state){
- case WHEEL_STATE_1:
- angularVelocity = -1.1f; // constant speed forward
- break;
- case WHEEL_STATE_3:
- angularVelocity = 0.0f; // not moving
- break;
- default:
- angularVelocity = -DotProduct(fwd, speed) / radius; // forward speed
- break;
- }
- return angularVelocity * CTimer::GetTimeStep();
-}
-
bool
CVehicle::IsLawEnforcementVehicle(void)
{
@@ -669,9 +772,10 @@ STARTPATCHES
InjectHook(0x417E60, &CVehicle_::GetHeightAboveRoad_, PATCH_JUMP);
InjectHook(0x552BB0, &CVehicle::FlyingControl, PATCH_JUMP);
+ InjectHook(0x5512E0, &CVehicle::ProcessWheel, PATCH_JUMP);
+ InjectHook(0x551280, &CVehicle::ProcessWheelRotation, PATCH_JUMP);
InjectHook(0x552AF0, &CVehicle::ExtinguishCarFire, PATCH_JUMP);
InjectHook(0x551C90, &CVehicle::ProcessDelayedExplosion, PATCH_JUMP);
- InjectHook(0x551280, &CVehicle::ProcessWheelRotation, PATCH_JUMP);
InjectHook(0x552880, &CVehicle::IsLawEnforcementVehicle, PATCH_JUMP);
InjectHook(0x552820, &CVehicle::ChangeLawEnforcerState, PATCH_JUMP);
InjectHook(0x552200, &CVehicle::UsesSiren, PATCH_JUMP);
diff --git a/src/vehicles/Vehicle.h b/src/vehicles/Vehicle.h
index 76ea76cb..c293b8a6 100644
--- a/src/vehicles/Vehicle.h
+++ b/src/vehicles/Vehicle.h
@@ -106,8 +106,10 @@ enum
enum tWheelState
{
+ WHEEL_STATE_0 = 0,
WHEEL_STATE_1 = 1, // constant velocity
- WHEEL_STATE_3 = 3, // not moving
+ WHEEL_STATE_2 = 2, // normal
+ WHEEL_STATE_STATIC = 3, // not moving
};
enum eFlightModel
@@ -249,6 +251,8 @@ public:
bool IsPlane(void) { return m_vehType == VEHICLE_TYPE_PLANE; }
void FlyingControl(eFlightModel flightModel);
+ void ProcessWheel(CVector &wheelFwd, CVector &wheelRight, CVector &wheelContactSpeed, CVector &wheelContactPoint,
+ int32 wheelsOnGround, float thrust, float brake, float adhesion, int8 wheelId, float *wheelSpeed, tWheelState *wheelState, uint16 wheelStatus);
void ExtinguishCarFire(void);
void ProcessDelayedExplosion(void);
float ProcessWheelRotation(tWheelState state, const CVector &fwd, const CVector &speed, float radius);
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 17:46:00 +0100