Merge pull request #411 from aap/master

finished CBoat

README.md

@@ -33,7 +33,6 @@ to reverse at the time, calling the original functions is acceptable.
 ### Unreversed / incomplete classes (at least the ones we know)
 ```
 cAudioManager - WIP
-CBoat
 CBulletInfo
 CPacManPickups
 CPedPath

src/core/re3.cpp

@@ -342,6 +342,7 @@ DebugMenuPopulate(void)
 		DebugMenuAddCmd("Spawn", "Spawn Dodo", [](){ SpawnCar(MI_DODO); });
 		DebugMenuAddCmd("Spawn", "Spawn Rhino", [](){ SpawnCar(MI_RHINO); });
 		DebugMenuAddCmd("Spawn", "Spawn Firetruck", [](){ SpawnCar(MI_FIRETRUCK); });
+		DebugMenuAddCmd("Spawn", "Spawn Predator", [](){ SpawnCar(MI_PREDATOR); });
 
 		DebugMenuAddVarBool8("Debug", "Draw hud", (int8*)&CHud::m_Wants_To_Draw_Hud, nil);
 		DebugMenuAddVar("Debug", "Engine Status", &engineStatus, nil, 1, 0, 226, nil);

src/entities/Physical.cpp

@@ -21,7 +21,7 @@ CPhysical::CPhysical(void)
 {
 	int i;
 
-	fForceMultiplier = 1.0f;
+	m_fForceMultiplier = 1.0f;
 	m_vecMoveSpeed = CVector(0.0f, 0.0f, 0.0f);
 	m_vecTurnSpeed = CVector(0.0f, 0.0f, 0.0f);
 	m_vecMoveFriction = CVector(0.0f, 0.0f, 0.0f);

src/entities/Physical.h

@@ -29,7 +29,7 @@ public:
 	CVector m_vecTurnSpeedAvg;
 	float m_fMass;
 	float m_fTurnMass;	// moment of inertia
-  float fForceMultiplier;
+	float m_fForceMultiplier;
 	float m_fAirResistance;
 	float m_fElasticity;
 	float m_fBuoyancy;

src/modelinfo/VehicleModelInfo.cpp

@@ -12,6 +12,7 @@
 #include "World.h"
 #include "Vehicle.h"
 #include "Automobile.h"
+#include "Boat.h"
 #include "Train.h"
 #include "Plane.h"
 #include "Heli.h"
@@ -80,9 +81,9 @@ RwObjectNameIdAssocation carIds[] = {
 };
 
 RwObjectNameIdAssocation boatIds[] = {
-	{ "boat_moving_hi",	1,	VEHICLE_FLAG_COLLAPSE },
-	{ "boat_rudder_hi",	3,	VEHICLE_FLAG_COLLAPSE },
-	{ "windscreen",		2,	VEHICLE_FLAG_WINDSCREEN | VEHICLE_FLAG_COLLAPSE },
+	{ "boat_moving_hi",	BOAT_MOVING,	VEHICLE_FLAG_COLLAPSE },
+	{ "boat_rudder_hi",	BOAT_RUDDER,	VEHICLE_FLAG_COLLAPSE },
+	{ "windscreen",		BOAT_WINDSCREEN,	VEHICLE_FLAG_WINDSCREEN | VEHICLE_FLAG_COLLAPSE },
 	{ "ped_frontseat",	BOAT_POS_FRONTSEAT,	VEHICLE_FLAG_POS | CLUMP_FLAG_NO_HIERID },
 	{ nil, 0, 0 }
 };

src/vehicles/Automobile.cpp

@@ -667,7 +667,7 @@ CAutomobile::ProcessControl(void)
 		if(!strongGrip1 && !CVehicle::bCheat3)
 			gripCheat = false;
 		float acceleration = pHandling->Transmission.CalculateDriveAcceleration(m_fGasPedal, m_nCurrentGear, m_fChangeGearTime, fwdSpeed, gripCheat);
-		acceleration /= fForceMultiplier;
+		acceleration /= m_fForceMultiplier;
 
 		// unused
 		if(GetModelIndex() == MI_MIAMI_RCBARON ||
@@ -718,7 +718,7 @@ CAutomobile::ProcessControl(void)
 		else
 			traction = 0.004f;
 		traction *= pHandling->fTractionMultiplier / 4.0f;
-		traction /= fForceMultiplier;
+		traction /= m_fForceMultiplier;
 		if(CVehicle::bCheat3)
 			traction *= 4.0f;
 
@@ -3791,7 +3791,7 @@ CAutomobile::BlowUpCar(CEntity *culprit)
 	}
 	ChangeLawEnforcerState(false);
 
-	gFireManager.StartFire(this, culprit, 0.8f, 1);	// TODO
+	gFireManager.StartFire(this, culprit, 0.8f, true);
 	CDarkel::RegisterCarBlownUpByPlayer(this);
 	if(GetModelIndex() == MI_RCBANDIT)
 		CExplosion::AddExplosion(this, culprit, EXPLOSION_CAR_QUICK, GetPosition(), 0);
@@ -4054,7 +4054,7 @@ CAutomobile::HasCarStoppedBecauseOfLight(void)
 			if(ThePaths.m_connections[curnode->firstLink + i] == AutoPilot.m_nNextRouteNode)
 				break;
 		if(i < curnode->numLinks &&
-		   ThePaths.m_carPathLinks[ThePaths.m_carPathConnections[curnode->firstLink + i]].trafficLightType & 3)	// TODO
+		   ThePaths.m_carPathLinks[ThePaths.m_carPathConnections[curnode->firstLink + i]].trafficLightType & 3)
 			return true;
 	}
 
@@ -4064,7 +4064,7 @@ CAutomobile::HasCarStoppedBecauseOfLight(void)
 			if(ThePaths.m_connections[curnode->firstLink + i] == AutoPilot.m_nPrevRouteNode)
 				break;
 		if(i < curnode->numLinks &&
-		   ThePaths.m_carPathLinks[ThePaths.m_carPathConnections[curnode->firstLink + i]].trafficLightType & 3)	// TODO
+		   ThePaths.m_carPathLinks[ThePaths.m_carPathConnections[curnode->firstLink + i]].trafficLightType & 3)
 			return true;
 	}
 

src/vehicles/Boat.cpp

@@ -1,12 +1,25 @@
 #include "common.h"
 #include "patcher.h"
-#include "Boat.h"
+#include "General.h"
+#include "Timecycle.h"
 #include "HandlingMgr.h"
+#include "CarCtrl.h"
 #include "RwHelper.h"
 #include "ModelIndices.h"
+#include "VisibilityPlugins.h"
+#include "DMAudio.h"
+#include "Camera.h"
+#include "Darkel.h"
+#include "Explosion.h"
+#include "Particle.h"
 #include "WaterLevel.h"
-#include "Pools.h"
+#include "Floater.h"
 #include "World.h"
+#include "Pools.h"
+#include "Pad.h"
+#include "Boat.h"
+
+#define INVALID_ORIENTATION (-9999.99f)
 
 float &fShapeLength = *(float*)0x600E78;
 float &fShapeTime   = *(float*)0x600E7C;
@@ -19,10 +32,6 @@ float WAKE_LIFETIME = 400.0f;
 
 CBoat * (&CBoat::apFrameWakeGeneratingBoats)[4] = *(CBoat * (*)[4])*(uintptr*)0x8620E0;
 
-WRAPPER void CBoat::ProcessControl() { EAXJMP(0x53EF10); }
-WRAPPER void CBoat::ProcessControlInputs(uint8) { EAXJMP(0x53EC70); }
-WRAPPER void CBoat::BlowUpCar(CEntity* ent) { EAXJMP(0x541CB0); }
-
 CBoat::CBoat(int mi, uint8 owner) : CVehicle(owner)
 {
 	CVehicleModelInfo *minfo = (CVehicleModelInfo*)CModelInfo::GetModelInfo(mi);
@@ -47,35 +56,31 @@ CBoat::CBoat(int mi, uint8 owner) : CVehicle(owner)
 	m_fGasPedal = 0.0f;
 	m_fBrakePedal = 0.0f;
 
-	field_288 = 0.25f;
-	field_28C = 0.35f;
-	field_290 = 0.7f;
-	field_294 = 0.998f;
-	field_298 = 0.999f;
-	field_29C = 0.85f;
-	field_2A0 = 0.96f;
-	field_2A4 = 0.96f;
+	m_fPropellerZ = 0.25f;
+	m_fPropellerY = 0.35f;
+	m_waterMoveDrag = CVector(0.7f, 0.998f, 0.999f);
+	m_waterTurnDrag = CVector(0.85f, 0.96f, 0.96f);
 	_unk2 = false;
 
-	m_fTurnForceZ = 7.0f;
-	field_2FC = 7.0f;
-	m_vecMoveForce = CVector(0.0f, 0.0f, 0.0f);
+	m_fVolumeUnderWater = 7.0f;
+	m_fPrevVolumeUnderWater = 7.0f;
+	m_vecBuoyancePoint = CVector(0.0f, 0.0f, 0.0f);
 
-	field_300 = 0;
-	m_bBoatFlag1 = true;
-	m_bBoatFlag2 = true;
+	m_nDeltaVolumeUnderWater = 0;
+	bBoatInWater = true;
+	bPropellerInWater = true;
 
 	bIsInWater = true;
 
 	unk1 = 0.0f;
 	m_bIsAnchored = true;
-	field_2C4 = -9999.99f;
+	m_fOrientation = INVALID_ORIENTATION;
 	bTouchingWater = true;
-	field_2CC = 0.0f;
-	field_2D0 = 0;
+	m_fDamage = 0.0f;
+	m_pSetOnFireEntity = nil;
 	m_nNumWakePoints = 0;
 
-	for (int16 i = 0; i < 32; i++)
+	for (int16 i = 0; i < ARRAY_SIZE(m_afWakePointLifeTime); i++)
 		m_afWakePointLifeTime[i] = 0.0f;
 
 	m_nAmmoInClip = 20;
@@ -94,6 +99,541 @@ CBoat::GetComponentWorldPosition(int32 component, CVector &pos)
 	pos = *RwMatrixGetPos(RwFrameGetLTM(m_aBoatNodes[component]));
 }
 
+void
+CBoat::ProcessControl(void)
+{
+	if(m_nZoneLevel > LEVEL_NONE && m_nZoneLevel != CCollision::ms_collisionInMemory)
+		return;
+
+	bool onLand = m_fDamageImpulse > 0.0f && m_vecDamageNormal.z > 0.1f;
+
+	PruneWakeTrail();
+
+	int r, g, b;
+	RwRGBA splashColor, jetColor;
+	r = 114.75f*(CTimeCycle::GetAmbientRed() + 0.5f*CTimeCycle::GetDirectionalRed());
+	g = 114.75f*(CTimeCycle::GetAmbientGreen() + 0.5f*CTimeCycle::GetDirectionalGreen());
+	b = 114.75f*(CTimeCycle::GetAmbientBlue() + 0.5f*CTimeCycle::GetDirectionalBlue());
+	r = clamp(r, 0, 255);
+	g = clamp(g, 0, 255);
+	b = clamp(b, 0, 255);
+	splashColor.red = r;
+	splashColor.green = g;
+	splashColor.blue = b;
+	splashColor.alpha = CGeneral::GetRandomNumberInRange(128, 150);
+
+	r = 242.25f*(CTimeCycle::GetAmbientRed() + 0.5f*CTimeCycle::GetDirectionalRed());
+	g = 242.25f*(CTimeCycle::GetAmbientGreen() + 0.5f*CTimeCycle::GetDirectionalGreen());
+	b = 242.25f*(CTimeCycle::GetAmbientBlue() + 0.5f*CTimeCycle::GetDirectionalBlue());
+	r = clamp(r, 0, 255);
+	g = clamp(g, 0, 255);
+	b = clamp(b, 0, 255);
+	jetColor.red = r;
+	jetColor.green = g;
+	jetColor.blue = b;
+	jetColor.alpha = CGeneral::GetRandomNumberInRange(96, 128);
+
+	CGeneral::GetRandomNumber();	// unused
+
+	ProcessCarAlarm();
+
+	switch(m_status){
+	case STATUS_PLAYER:
+		m_bIsAnchored = false;
+		m_fOrientation = INVALID_ORIENTATION;
+		ProcessControlInputs(0);
+		if(GetModelIndex() == MI_PREDATOR)
+			DoFixedMachineGuns();
+		break;
+	case STATUS_SIMPLE:
+		m_bIsAnchored = false;
+		m_fOrientation = INVALID_ORIENTATION;
+		CPhysical::ProcessControl();
+		bBoatInWater = true;
+		bPropellerInWater = true;
+		bIsInWater = true;
+		return;
+	case STATUS_PHYSICS:
+		m_bIsAnchored = false;
+		m_fOrientation = INVALID_ORIENTATION;
+		CCarCtrl::SteerAIBoatWithPhysics(this);
+		break;
+	case STATUS_ABANDONED:
+	case STATUS_WRECKED:
+		bBoatInWater = true;
+		bPropellerInWater = true;
+		bIsInWater = true;
+		m_fSteerAngle = 0.0;
+		bIsHandbrakeOn = false;
+		m_fBrakePedal = 0.5f;
+		m_fGasPedal = 0.0f;
+		if((GetPosition() - CWorld::Players[CWorld::PlayerInFocus].GetPos()).Magnitude() > 150.0f){
+			m_vecMoveSpeed = CVector(0.0f, 0.0f, 0.0f);
+			m_vecTurnSpeed = CVector(0.0f, 0.0f, 0.0f);
+			return;
+		}
+		break;
+	}
+
+	float collisionDamage = pHandling->fCollisionDamageMultiplier * m_fDamageImpulse;
+	if(collisionDamage > 25.0f && m_status != STATUS_WRECKED && m_fHealth >= 150.0f){
+		float prevHealth = m_fHealth;
+		if(this == FindPlayerVehicle()){
+			if(bTakeLessDamage)
+				m_fHealth -= (collisionDamage-25.0f)/6.0f;
+			else
+				m_fHealth -= (collisionDamage-25.0f)/2.0f;
+		}else{
+			if(collisionDamage > 60.0f && pDriver)
+				pDriver->Say(SOUND_PED_CAR_COLLISION);
+			if(bTakeLessDamage)
+				m_fHealth -= (collisionDamage-25.0f)/12.0f;
+			else
+				m_fHealth -= (collisionDamage-25.0f)/4.0f;
+		}
+
+		if(m_fHealth <= 0.0f && prevHealth > 0.0f){
+			m_fHealth = 1.0f;
+			m_pSetOnFireEntity = m_pDamageEntity;
+		}
+	}
+
+	// Damage particles
+	if(m_fHealth <= 600.0f && m_status != STATUS_WRECKED &&
+	   Abs(GetPosition().x - TheCamera.GetPosition().x) < 200.0f &&
+	   Abs(GetPosition().y - TheCamera.GetPosition().y) < 200.0f){
+		float speedSq = m_vecMoveSpeed.MagnitudeSqr();
+		CVector smokeDir = 0.8f*m_vecMoveSpeed;
+		CVector smokePos;
+		switch(GetModelIndex()){
+		case MI_SPEEDER:
+			smokePos = CVector(0.4f, -2.4f, 0.8f);
+			smokeDir += 0.05f*GetRight();
+			smokeDir.z += 0.2f*m_vecMoveSpeed.z;
+			break;
+		case MI_REEFER:
+			smokePos = CVector(2.0f, -1.0f, 0.5f);
+			smokeDir += 0.07f*GetRight();
+			break;
+		case MI_PREDATOR:
+		default:
+			smokePos = CVector(-1.5f, -0.5f, 1.2f);
+			smokeDir += -0.08f*GetRight();
+			break;
+		}
+
+		smokePos = GetMatrix() * smokePos;
+
+		// On fire
+		if(m_fHealth < 150.0f){
+			CParticle::AddParticle(PARTICLE_CARFLAME, smokePos,
+				CVector(0.0f, 0.0f, CGeneral::GetRandomNumberInRange(2.25f/200.0f, 0.09f)),
+				nil, 0.9f);
+			CVector smokePos2 = smokePos;
+			smokePos2.x += CGeneral::GetRandomNumberInRange(-2.25f/4.0f, 2.25f/4.0f);
+			smokePos2.y += CGeneral::GetRandomNumberInRange(-2.25f/4.0f, 2.25f/4.0f);
+			smokePos2.z += CGeneral::GetRandomNumberInRange(2.25f/4.0f, 2.25f);
+			CParticle::AddParticle(PARTICLE_ENGINE_SMOKE2, smokePos2, CVector(0.0f, 0.0f, 0.0f));
+
+			m_fDamage += CTimer::GetTimeStepInMilliseconds();
+			if(m_fDamage > 5000.0f)
+				BlowUpCar(m_pSetOnFireEntity);
+		}
+
+		if(speedSq < 0.25f && (CTimer::GetFrameCounter() + m_randomSeed) & 1)
+			CParticle::AddParticle(PARTICLE_ENGINE_STEAM, smokePos, smokeDir);
+		if(speedSq < 0.25f && m_fHealth <= 350.0f)
+			CParticle::AddParticle(PARTICLE_ENGINE_SMOKE, smokePos, 1.25f*smokeDir);
+	}
+
+	CPhysical::ProcessControl();
+
+	CVector buoyanceImpulse(0.0f, 0.0f, 0.0f);
+	CVector buoyancePoint(0.0f, 0.0f, 0.0f);
+	if(mod_Buoyancy.ProcessBuoyancy(this, pHandling->fBuoyancy, &buoyancePoint, &buoyanceImpulse)){
+		// Process boat in water
+		if(0.1f * m_fMass * GRAVITY*CTimer::GetTimeStep() < buoyanceImpulse.z){
+			bBoatInWater = true;
+			bIsInWater = true;
+		}else{
+			bBoatInWater = false;
+			bIsInWater = false;
+		}
+
+		m_fVolumeUnderWater = mod_Buoyancy.m_volumeUnderWater;
+		m_vecBuoyancePoint = buoyancePoint;
+		ApplyMoveForce(buoyanceImpulse);
+		if(!onLand)
+			ApplyTurnForce(buoyanceImpulse, buoyancePoint);
+
+		if(!onLand && bBoatInWater && GetUp().z > 0.0f){
+			float impulse;
+			if(m_fGasPedal > 0.05f)
+				impulse = m_vecMoveSpeed.MagnitudeSqr()*pHandling->fSuspensionForceLevel*buoyanceImpulse.z*CTimer::GetTimeStep()*0.5f*m_fGasPedal;
+			else
+				impulse = 0.0f;
+			impulse = min(impulse, GRAVITY*pHandling->fSuspensionDampingLevel*m_fMass*CTimer::GetTimeStep());
+			ApplyMoveForce(impulse*GetUp());
+			ApplyTurnForce(impulse*GetUp(), buoyancePoint - pHandling->fSuspensionBias*GetForward());
+		}
+
+		// Handle boat moving forward
+		if(Abs(m_fGasPedal) > 0.05f || m_vecMoveSpeed.Magnitude() > 0.01f){
+			if(bBoatInWater)
+				AddWakePoint(GetPosition());
+
+			float steerFactor = 1.0f - DotProduct(m_vecMoveSpeed, GetForward());
+			if(m_modelIndex == MI_GHOST)
+				steerFactor = 1.0f - DotProduct(m_vecMoveSpeed, GetForward())*0.3f;
+			if(steerFactor < 0.0f) steerFactor = 0.0f;
+
+			CVector propeller(0.0f, -pHandling->Dimension.y*m_fPropellerY, -pHandling->Dimension.z*m_fPropellerZ);
+			propeller = Multiply3x3(GetMatrix(), propeller);
+			CVector propellerWorld = GetPosition() + propeller;
+
+			float steerSin = Sin(-m_fSteerAngle * steerFactor);
+			float steerCos = Cos(-m_fSteerAngle * steerFactor);
+			float waterLevel;
+			CWaterLevel::GetWaterLevel(propellerWorld, &waterLevel, true);
+			if(propellerWorld.z-0.5f < waterLevel){
+				float propellerDepth = waterLevel - (propellerWorld.z - 0.5f);
+				if(propellerDepth > 1.0f)
+					propellerDepth = 1.0f;
+				else
+					propellerDepth = SQR(propellerDepth);
+				bPropellerInWater = true;
+
+				if(Abs(m_fGasPedal) > 0.05f){
+					CVector forceDir = Multiply3x3(GetMatrix(), CVector(-steerSin, steerCos, -Abs(m_fSteerAngle)));
+					CVector force = propellerDepth * m_fGasPedal * 40.0f * pHandling->Transmission.fEngineAcceleration * pHandling->fMass * forceDir;
+					if(force.z > 0.2f)
+						force.z = SQR(1.2f - force.z) + 0.2f;
+					if(onLand){
+						if(m_fGasPedal < 0.0f){
+							force.x *= 5.0f;
+							force.y *= 5.0f;
+						}
+						if(force.z < 0.0f)
+							force.z = 0.0f;
+						ApplyMoveForce(force * CTimer::GetTimeStep());
+					}else{
+						ApplyMoveForce(force * CTimer::GetTimeStep());
+						ApplyTurnForce(force * CTimer::GetTimeStep(), propeller - pHandling->fTractionBias*GetUp());
+						float rightForce = DotProduct(GetRight(), force);
+						ApplyTurnForce(-rightForce*GetRight() * CTimer::GetTimeStep(), GetUp());
+					}
+
+					// Spray some particles
+					CVector jetDir = -0.04f * force;
+					if(m_fGasPedal > 0.0f){
+						if(m_status == STATUS_PLAYER){
+							bool cameraHack = TheCamera.Cams[TheCamera.ActiveCam].Mode == CCam::MODE_TOPDOWN ||
+								TheCamera.WhoIsInControlOfTheCamera == CAMCONTROL_OBBE;
+							CVector sternPos = GetColModel()->boundingBox.min;
+							sternPos.x = 0.0f;
+							sternPos.z = 0.0f;
+							sternPos = Multiply3x3(GetMatrix(), sternPos);
+
+							CVector jetPos = GetPosition() + sternPos;
+							if(cameraHack)
+								jetPos.z = 1.0f;
+							else
+								jetPos.z = 0.0f;
+
+							CVector wakePos = GetPosition() + sternPos;
+							wakePos.z -= 0.65f;
+
+							CVector wakeDir = 0.75f * jetDir;
+
+							CParticle::AddParticle(PARTICLE_BOAT_THRUSTJET, jetPos, jetDir, nil, 0.0f, jetColor);
+							CParticle::AddParticle(PARTICLE_CAR_SPLASH, jetPos, 0.25f * jetDir, nil, 1.0f, splashColor,
+								CGeneral::GetRandomNumberInRange(0, 30),
+								CGeneral::GetRandomNumberInRange(0, 90), 3);
+							if(!cameraHack)
+								CParticle::AddParticle(PARTICLE_BOAT_WAKE, wakePos, wakeDir, nil, 0.0f, jetColor);
+						}else if((CTimer::GetFrameCounter() + m_randomSeed) & 1){
+							jetDir.z = 0.018f;
+							jetDir.x *= 0.01f;
+							jetDir.y *= 0.01f;
+							propellerWorld.z += 1.5f;
+
+							CParticle::AddParticle(PARTICLE_BOAT_SPLASH, propellerWorld, jetDir, nil, 1.5f, jetColor);
+							CParticle::AddParticle(PARTICLE_CAR_SPLASH, propellerWorld, 0.1f * jetDir, nil, 0.5f, splashColor,
+								CGeneral::GetRandomNumberInRange(0, 30),
+								CGeneral::GetRandomNumberInRange(0, 90), 3);
+						}
+					}
+				}else if(!onLand){
+					float force = 50.0f*DotProduct(m_vecMoveSpeed, GetForward());
+					if(force > 10.0f) force = 10.0f;
+					CVector propellerForce = propellerDepth * Multiply3x3(GetMatrix(), force*CVector(-steerSin, 0.0f, 0.0f));
+					ApplyMoveForce(propellerForce * CTimer::GetTimeStep()*0.5f);
+					ApplyTurnForce(propellerForce * CTimer::GetTimeStep()*0.5f, propeller);
+				}
+			}else
+				bPropellerInWater = false;
+		}
+
+		// Slow down or push down boat as it approaches the world limits
+		m_vecMoveSpeed.x = min(m_vecMoveSpeed.x, -(GetPosition().x - 1900.0f)*0.01f);	// east
+		m_vecMoveSpeed.x = max(m_vecMoveSpeed.x, -(GetPosition().x - -1515.0f)*0.01f);	// west
+		m_vecMoveSpeed.y = min(m_vecMoveSpeed.y, -(GetPosition().y - 600.0f)*0.01f);	// north
+		m_vecMoveSpeed.y = max(m_vecMoveSpeed.y, -(GetPosition().y - -1900.0f)*0.01f);	// south
+
+		if(!onLand && bBoatInWater)
+			ApplyWaterResistance();
+
+		// No idea what exactly is going on here besides drag in YZ
+		float fx = Pow(m_waterTurnDrag.x, CTimer::GetTimeStep());
+		float fy = Pow(m_waterTurnDrag.y, CTimer::GetTimeStep());
+		float fz = Pow(m_waterTurnDrag.z, CTimer::GetTimeStep());
+		m_vecTurnSpeed = Multiply3x3(m_vecTurnSpeed, GetMatrix());	// invert - to local space
+		// TODO: figure this out
+		float magic = 1.0f/(1000.0f * SQR(m_vecTurnSpeed.x) + 1.0f) * fx;
+		m_vecTurnSpeed.y *= fy;
+		m_vecTurnSpeed.z *= fz;
+		float forceUp = (magic - 1.0f) * m_vecTurnSpeed.x * m_fTurnMass;
+		m_vecTurnSpeed = Multiply3x3(GetMatrix(), m_vecTurnSpeed);	// back to world
+		CVector com = Multiply3x3(GetMatrix(), m_vecCentreOfMass);
+		ApplyTurnForce(CVector(0.0f, 0.0f, forceUp), com + GetForward());
+
+		m_nDeltaVolumeUnderWater = (m_fVolumeUnderWater-m_fPrevVolumeUnderWater)*10000;
+
+		// Falling into water
+		if(!onLand && bBoatInWater && GetUp().z > 0.0f && m_nDeltaVolumeUnderWater > 200){
+			DMAudio.PlayOneShot(m_audioEntityId, SOUND_CAR_SPLASH, m_nDeltaVolumeUnderWater);
+
+			float speedUp = m_vecMoveSpeed.MagnitudeSqr() * m_nDeltaVolumeUnderWater * 0.0004f;
+			if(speedUp + m_vecMoveSpeed.z > pHandling->fBrakeDeceleration)
+				speedUp = pHandling->fBrakeDeceleration - m_vecMoveSpeed.z;
+			if(speedUp < 0.0f) speedUp = 0.0f;
+			float speedFwd = DotProduct(m_vecMoveSpeed, GetForward());
+			speedFwd *= -m_nDeltaVolumeUnderWater * 0.01f * pHandling->fTractionLoss;
+			CVector speed = speedFwd*GetForward() + CVector(0.0f, 0.0f, speedUp);
+			CVector splashImpulse = speed * m_fMass;
+			ApplyMoveForce(splashImpulse);
+			ApplyTurnForce(splashImpulse, buoyancePoint);
+		}
+
+		// Spray particles on sides of boat
+		if(m_nDeltaVolumeUnderWater > 75){
+			float speed = m_vecMoveSpeed.Magnitude();
+			float splash1Size = speed;
+			float splash2Size = m_nDeltaVolumeUnderWater * 0.005f * 0.2f;
+			float front = 0.9f * GetColModel()->boundingBox.max.y;
+			if(splash1Size > 0.75f) splash1Size = 0.75f;
+
+			CVector dir, pos;
+
+			// right
+			dir = -0.5f*m_vecMoveSpeed;
+			dir.z += 0.1f*speed;
+			dir += 0.5f*GetRight()*speed;
+			pos = front*GetForward() + 0.5f*GetRight() + GetPosition() + m_vecBuoyancePoint;
+			CWaterLevel::GetWaterLevel(pos, &pos.z, true);
+			CParticle::AddParticle(PARTICLE_CAR_SPLASH, pos, 0.75f * dir, nil, splash1Size, splashColor,
+				CGeneral::GetRandomNumberInRange(0, 30),
+				CGeneral::GetRandomNumberInRange(0, 90), 1);
+			CParticle::AddParticle(PARTICLE_BOAT_SPLASH, pos, dir, nil, splash2Size, jetColor);
+
+			// left
+			dir = -0.5f*m_vecMoveSpeed;
+			dir.z += 0.1f*speed;
+			dir -= 0.5f*GetRight()*speed;
+			pos = front*GetForward() - 0.5f*GetRight() + GetPosition() + m_vecBuoyancePoint;
+			CWaterLevel::GetWaterLevel(pos, &pos.z, true);
+			CParticle::AddParticle(PARTICLE_CAR_SPLASH, pos, 0.75f * dir, nil, splash1Size, splashColor,
+				CGeneral::GetRandomNumberInRange(0, 30),
+				CGeneral::GetRandomNumberInRange(0, 90), 1);
+			CParticle::AddParticle(PARTICLE_BOAT_SPLASH, pos, dir, nil, splash2Size, jetColor);
+		}
+
+		m_fPrevVolumeUnderWater = m_fVolumeUnderWater;
+	}else{
+		bBoatInWater = false;
+		bIsInWater = false;
+	}
+
+	if(m_bIsAnchored){
+		m_vecMoveSpeed.x = 0.0f;
+		m_vecMoveSpeed.y = 0.0f;
+
+		if(m_fOrientation == INVALID_ORIENTATION){
+			m_fOrientation = GetForward().Heading();
+		}else{
+			// is this some inlined CPlaceable method?
+			CVector pos = GetPosition();
+			GetMatrix().RotateZ(m_fOrientation - GetForward().Heading());
+			GetPosition() = pos;
+		}
+	}
+
+	ProcessDelayedExplosion();
+}
+
+void
+CBoat::ProcessControlInputs(uint8 pad)
+{
+	m_nPadID = pad;
+	if(m_nPadID > 3)
+		m_nPadID = 3;
+
+	m_fBrake += (CPad::GetPad(pad)->GetBrake()/255.0f - m_fBrake)*0.1f;
+	m_fBrake = clamp(m_fBrake, 0.0f, 1.0f);
+
+	if(m_fBrake < 0.05f){
+		m_fBrake = 0.0f;
+		m_fAccelerate += (CPad::GetPad(pad)->GetAccelerate()/255.0f - m_fAccelerate)*0.1f;
+		m_fAccelerate = clamp(m_fAccelerate, 0.0f, 1.0f);
+	}else
+		m_fAccelerate = -m_fBrake*0.2f;
+
+	m_fSteeringLeftRight += (-CPad::GetPad(pad)->GetSteeringLeftRight()/128.0f - m_fSteeringLeftRight)*0.2f;
+	m_fSteeringLeftRight = clamp(m_fSteeringLeftRight, -1.0f, 1.0f);
+
+	float steeringSq = m_fSteeringLeftRight < 0.0f ? -SQR(m_fSteeringLeftRight) : SQR(m_fSteeringLeftRight);
+	m_fSteerAngle = pHandling->fSteeringLock * DEGTORAD(steeringSq);
+	m_fGasPedal = m_fAccelerate;
+}
+
+void
+CBoat::ApplyWaterResistance(void)
+{
+	float fwdSpeed = DotProduct(GetMoveSpeed(), GetForward());
+	// TODO: figure out how this works
+	float magic = (SQR(fwdSpeed) + 0.05f) * (0.001f * SQR(m_fVolumeUnderWater) * m_fMass) + 1.0f;
+	magic = Abs(magic);
+	// FRAMETIME
+	float fx = Pow(m_waterMoveDrag.x/magic, 0.5f*CTimer::GetTimeStep());
+	float fy = Pow(m_waterMoveDrag.y/magic, 0.5f*CTimer::GetTimeStep());
+	float fz = Pow(m_waterMoveDrag.z/magic, 0.5f*CTimer::GetTimeStep());
+
+	m_vecMoveSpeed = Multiply3x3(m_vecMoveSpeed, GetMatrix());	// invert - to local space
+	m_vecMoveSpeed.x *= fx;
+	m_vecMoveSpeed.y *= fy;
+	m_vecMoveSpeed.z *= fz;
+	float force = (fy - 1.0f) * m_vecMoveSpeed.y * m_fMass;
+	m_vecMoveSpeed = Multiply3x3(GetMatrix(), m_vecMoveSpeed);	// back to world
+
+	ApplyTurnForce(force*GetForward(), -GetUp());
+
+	if(m_vecMoveSpeed.z > 0.0f)
+		m_vecMoveSpeed.z *= fz;
+	else
+		m_vecMoveSpeed.z *= (1.0f - fz)*0.5f + fz;
+}
+
+RwObject*
+GetBoatAtomicObjectCB(RwObject *object, void *data)
+{
+	RpAtomic *atomic = (RpAtomic*)object;
+	assert(RwObjectGetType(object) == rpATOMIC);
+	if(RpAtomicGetFlags(atomic) & rpATOMICRENDER)
+		*(RpAtomic**)data = atomic;
+	return object;
+
+	
+}
+
+void
+CBoat::BlowUpCar(CEntity *culprit)
+{
+	RpAtomic *atomic;
+	RwFrame *frame;
+	RwMatrix *matrix;
+	CObject *obj;
+
+	if(!bCanBeDamaged)
+		return;
+
+	// explosion pushes vehicle up
+	m_vecMoveSpeed.z += 0.13f;
+	m_status = STATUS_WRECKED;
+	bRenderScorched = true;
+
+	m_fHealth = 0.0;
+	m_nBombTimer = 0;
+	TheCamera.CamShake(0.7f, GetPosition().x, GetPosition().y, GetPosition().z);
+
+	if(this == FindPlayerVehicle())
+		FindPlayerPed()->m_fHealth = 0.0f;	// kill player
+	if(pDriver){
+		CDarkel::RegisterKillByPlayer(pDriver, WEAPONTYPE_EXPLOSION);
+		pDriver->SetDead();
+		pDriver->FlagToDestroyWhenNextProcessed();
+	}
+
+	bEngineOn = false;
+	bLightsOn = false;
+	ChangeLawEnforcerState(false);
+
+	CExplosion::AddExplosion(this, culprit, EXPLOSION_CAR, GetPosition(), 0);
+	if(m_aBoatNodes[BOAT_MOVING] == nil)
+		return;
+
+	// much like CAutomobile::SpawnFlyingComponent from here on
+
+	atomic = nil;
+	RwFrameForAllObjects(m_aBoatNodes[BOAT_MOVING], GetBoatAtomicObjectCB, &atomic);
+	if(atomic == nil)
+		return;
+
+	obj = new CObject();
+	if(obj == nil)
+		return;
+
+	obj->SetModelIndexNoCreate(MI_CAR_WHEEL);
+
+	// object needs base model
+	obj->RefModelInfo(GetModelIndex());
+
+	// create new atomic
+	matrix = RwFrameGetLTM(m_aBoatNodes[BOAT_MOVING]);
+	frame = RwFrameCreate();
+	atomic = RpAtomicClone(atomic);
+	*RwFrameGetMatrix(frame) = *matrix;
+	RpAtomicSetFrame(atomic, frame);
+	CVisibilityPlugins::SetAtomicRenderCallback(atomic, nil);
+	obj->AttachToRwObject((RwObject*)atomic);
+
+	// init object
+	obj->m_fMass = 10.0f;
+	obj->m_fTurnMass = 25.0f;
+	obj->m_fAirResistance = 0.99f;
+	obj->m_fElasticity = 0.1f;
+	obj->m_fBuoyancy = obj->m_fMass*GRAVITY/0.75f;
+	obj->ObjectCreatedBy = TEMP_OBJECT;
+	obj->bIsStatic = false;
+	obj->bIsPickup = false;
+
+	// life time
+	CObject::nNoTempObjects++;
+	obj->m_nEndOfLifeTime = CTimer::GetTimeInMilliseconds() + 20000;
+
+	obj->m_vecMoveSpeed = m_vecMoveSpeed;
+	if(GetUp().z > 0.0f)
+		obj->m_vecMoveSpeed.z = 0.3f;
+	else
+		obj->m_vecMoveSpeed.z = 0.0f;
+
+	obj->m_vecTurnSpeed = m_vecTurnSpeed*2.0f;
+	obj->m_vecTurnSpeed.x = 0.5f;
+
+	// push component away from boat
+	CVector dist = obj->GetPosition() - GetPosition();
+	dist.Normalise();
+	if(GetUp().z > 0.0f)
+		dist += GetUp();
+	obj->GetPosition() += GetUp();
+
+	CWorld::Add(obj);
+
+	atomic = nil;
+	RwFrameForAllObjects(m_aBoatNodes[BOAT_MOVING], GetBoatAtomicObjectCB, &atomic);
+	if(atomic)
+		RpAtomicSetFlags(atomic, 0);
+}
+
 RwIm3DVertex KeepWaterOutVertices[4];
 RwImVertexIndex KeepWaterOutIndices[6];
 
@@ -102,8 +642,8 @@ CBoat::Render()
 {
 	CMatrix matrix;
 
-	if (m_aBoatNodes[1] != nil) {
-		matrix.Attach(RwFrameGetMatrix(m_aBoatNodes[1]));
+	if (m_aBoatNodes[BOAT_MOVING] != nil) {
+		matrix.Attach(RwFrameGetMatrix(m_aBoatNodes[BOAT_MOVING]));
 
 		CVector pos = matrix.GetPosition();
 		matrix.SetRotateZ(m_fMovingHiRotation);
@@ -111,7 +651,7 @@ CBoat::Render()
 
 		matrix.UpdateRW();
 		if (CVehicle::bWheelsOnlyCheat) {
-			RpAtomicRender((RpAtomic*)GetFirstObject(m_aBoatNodes[1]));
+			RpAtomicRender((RpAtomic*)GetFirstObject(m_aBoatNodes[BOAT_MOVING]));
 		}
 	}
 	m_fMovingHiRotation += 0.05f;
@@ -234,10 +774,9 @@ CBoat::IsVertexAffectedByWake(CVector vecVertex, CBoat *pBoat)
 void
 CBoat::SetupModelNodes()
 {
-	m_aBoatNodes[0] = nil;
-	m_aBoatNodes[1] = nil;
-	m_aBoatNodes[2] = nil;
-	m_aBoatNodes[3] = nil;
+	int i;
+	for(i = 0; i < ARRAY_SIZE(m_aBoatNodes); i++)
+		m_aBoatNodes[i] = nil;
 	CClumpModelInfo::FillFrameArray(GetClump(), m_aBoatNodes);
 }
 
@@ -275,6 +814,43 @@ CBoat::FillBoatList()
 	}
 }
 
+void
+CBoat::PruneWakeTrail(void)
+{
+	int i;
+
+	for(i = 0; i < ARRAY_SIZE(m_afWakePointLifeTime); i++){
+		if(m_afWakePointLifeTime[i] <= 0.0f)
+			break;
+		if(m_afWakePointLifeTime[i] <= CTimer::GetTimeStep()){
+			m_afWakePointLifeTime[i] = 0.0f;
+			break;
+		}
+		m_afWakePointLifeTime[i] -= CTimer::GetTimeStep();
+	}
+	m_nNumWakePoints = i;
+}
+
+void
+CBoat::AddWakePoint(CVector point)
+{
+	int i;
+	if(m_afWakePointLifeTime[0] > 0.0f){
+		if((CVector2D(GetPosition()) - m_avec2dWakePoints[0]).MagnitudeSqr() < SQR(1.0f)){
+			for(i = min(m_nNumWakePoints, ARRAY_SIZE(m_afWakePointLifeTime)-1); i != 0; i--){
+				m_avec2dWakePoints[i] = m_avec2dWakePoints[i-1];
+				m_afWakePointLifeTime[i] = m_afWakePointLifeTime[i-1];
+			}
+			m_avec2dWakePoints[0] = point;
+			m_afWakePointLifeTime[0] = 400.0f;
+		}
+	}else{
+		m_avec2dWakePoints[0] = point;
+		m_afWakePointLifeTime[0] = 400.0f;
+		m_nNumWakePoints = 1;
+	}
+}
+
 #include <new>
 
 class CBoat_ : public CBoat
@@ -291,4 +867,7 @@ STARTPATCHES
 	InjectHook(0x542370, CBoat::IsSectorAffectedByWake, PATCH_JUMP);
 	InjectHook(0x5424A0, CBoat::IsVertexAffectedByWake, PATCH_JUMP);
 	InjectHook(0x542250, CBoat::FillBoatList, PATCH_JUMP);
+	InjectHook(0x542140, &CBoat::AddWakePoint, PATCH_JUMP);
+	InjectHook(0x5420D0, &CBoat::PruneWakeTrail, PATCH_JUMP);
+	InjectHook(0x541A30, &CBoat::ApplyWaterResistance, PATCH_JUMP);
 ENDPATCHES

src/vehicles/Boat.h

@@ -2,47 +2,41 @@
 
 #include "Vehicle.h"
 
+enum eBoatNodes
+{
+	BOAT_MOVING = 1,
+	BOAT_RUDDER,
+	BOAT_WINDSCREEN
+};
+
 class CBoat : public CVehicle
 {
 public:
 	// 0x288
-	float field_288;
-	float field_28C;
-	float field_290;
-	float field_294;
-	float field_298;
-	float field_29C;
-	float field_2A0;
-	float field_2A4;
+	float m_fPropellerZ;
+	float m_fPropellerY;
+	CVector m_waterMoveDrag;
+	CVector m_waterTurnDrag;
 	float m_fMovingHiRotation;
 	int32 _unk0;
 	RwFrame *m_aBoatNodes[4];
-	uint8 m_bBoatFlag1 : 1;
-	uint8 m_bBoatFlag2 : 1;
-	uint8 m_bBoatFlag3 : 1;
-	uint8 m_bBoatFlag4 : 1;
-	uint8 m_bBoatFlag5 : 1;
-	uint8 m_bBoatFlag6 : 1;
-	uint8 m_bBoatFlag7 : 1;
-	uint8 m_bBoatFlag8 : 1;
+	uint8 bBoatInWater : 1;
+	uint8 bPropellerInWater : 1;
 	bool m_bIsAnchored;
-	char _pad0[2];
-	float field_2C4;
+	float m_fOrientation;
 	int32 _unk1;
-	float field_2CC;
-	CEntity *field_2D0;
+	float m_fDamage;
+	CEntity *m_pSetOnFireEntity;
 	bool _unk2;
-	char _pad1[3];
 	float m_fAccelerate;
 	float m_fBrake;
 	float m_fSteeringLeftRight;
 	uint8 m_nPadID;
-	char _pad2[3];
 	int32 _unk3;
-	float m_fTurnForceZ;
-	CVector m_vecMoveForce;
-	float field_2FC;
-	uint16 field_300;
+	float m_fVolumeUnderWater;
+	CVector m_vecBuoyancePoint;
+	float m_fPrevVolumeUnderWater;
+	int16 m_nDeltaVolumeUnderWater;
 	uint16 m_nNumWakePoints;
 	CVector2D m_avec2dWakePoints[32];
 	float m_afWakePointLifeTime[32];
@@ -59,7 +53,10 @@ public:
 	virtual bool IsComponentPresent(int32 component) { return true; }
 	virtual void BlowUpCar(CEntity *ent);
 	
+	void ApplyWaterResistance(void);
 	void SetupModelNodes();
+	void PruneWakeTrail(void);
+	void AddWakePoint(CVector point);
 
 	static CBoat *(&apFrameWakeGeneratingBoats)[4];
 	

src/vehicles/Vehicle.cpp

@@ -481,6 +481,55 @@ CVehicle::InflictDamage(CEntity* damagedBy, eWeaponType weaponType, float damage
 		FindPlayerPed()->SetWantedLevelNoDrop(1);
 }
 
+void
+CVehicle::DoFixedMachineGuns(void)
+{
+	if(CPad::GetPad(0)->GetCarGunFired() && !bGunSwitchedOff){
+		if(CTimer::GetTimeInMilliseconds() > m_nGunFiringTime + 150){
+			CVector source, target;
+			float dx, dy, len;
+
+			dx = GetForward().x;
+			dy = GetForward().y;
+			len = Sqrt(SQR(dx) + SQR(dy));
+			if(len < 0.1f) len = 0.1f;
+			dx /= len;
+			dy /= len;
+
+			m_nGunFiringTime = CTimer::GetTimeInMilliseconds();
+
+			source = GetMatrix() * CVector(2.0f, 2.5f, 1.0f);
+			target = source + CVector(dx, dy, 0.0f)*60.0f;
+			target += CVector(
+				((CGeneral::GetRandomNumber()&0xFF)-128) * 0.015f,
+				((CGeneral::GetRandomNumber()&0xFF)-128) * 0.015f,
+				((CGeneral::GetRandomNumber()&0xFF)-128) * 0.02f);
+			CWeapon::DoTankDoomAiming(this, pDriver, &source, &target);
+			FireOneInstantHitRound(&source, &target, 15);
+
+			source = GetMatrix() * CVector(-2.0f, 2.5f, 1.0f);
+			target = source + CVector(dx, dy, 0.0f)*60.0f;
+			target += CVector(
+				((CGeneral::GetRandomNumber()&0xFF)-128) * 0.015f,
+				((CGeneral::GetRandomNumber()&0xFF)-128) * 0.015f,
+				((CGeneral::GetRandomNumber()&0xFF)-128) * 0.02f);
+			CWeapon::DoTankDoomAiming(this, pDriver, &source, &target);
+			FireOneInstantHitRound(&source, &target, 15);
+
+			DMAudio.PlayOneShot(m_audioEntityId, SOUND_WEAPON_SHOT_FIRED, 0.0f);
+
+			m_nAmmoInClip--;
+			if(m_nAmmoInClip == 0){
+				m_nAmmoInClip = 20;
+				m_nGunFiringTime = CTimer::GetTimeInMilliseconds() + 1400;
+			}
+		}
+	}else{
+		if(CTimer::GetTimeInMilliseconds() > m_nGunFiringTime + 1400)
+			m_nAmmoInClip = 20;
+	}
+}
+
 void
 CVehicle::ExtinguishCarFire(void)
 {

src/vehicles/Vehicle.h

@@ -269,6 +269,7 @@ public:
 	bool IsSphereTouchingVehicle(float sx, float sy, float sz, float radius);
 	bool ShufflePassengersToMakeSpace(void);
 	void InflictDamage(CEntity *damagedBy, eWeaponType weaponType, float damage);
+	void DoFixedMachineGuns(void);
 
 	bool IsAlarmOn(void) { return m_nAlarmState != 0 && m_nAlarmState != -1; }
 	CVehicleModelInfo* GetModelInfo() { return (CVehicleModelInfo*)CModelInfo::GetModelInfo(GetModelIndex()); }