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Posted: **Sun Oct 19, 2014 4:55 pm**

Remember in BF1 when you went prone you could slide down steep hills like you were sledding? Is it possible to recreate that with a vehicle? Or at all?

Posted: **Sun Oct 19, 2014 5:18 pm**

You know, that actually might be possible with a hover vehicle.

http://www.secretsociety.com/forum/down ... mented.txt

Specifically these parameters:

SetAltitude = 0.5 // Sets the default hover altitude
GravityScale = 4.0 // Sets the mass of the vehicle
LiftSpring = 4.0 // Sets the spring in the hover
LiftDamp = 3.0 // Sets the cushion of the spring on subsequent bounces

Acceleration = 5.25 // Sets the rate of acceleration m/s
Deceleration = 7.0 // Sets the rate of decelleration m/s
Traction = 20.0 // Sets the percent to decrease acceleration rate when starting from zero
ForwardSpeed = 12.0 // Sets the maxspeed m/s
ReverseSpeed = 10.0 // Sets the max reverse speed m/s
StrafeSpeed = 4.5 // Sets the max strafe speed m/s

Posted: **Sun Oct 19, 2014 5:53 pm**

cool! im making a proof of concept map now.. how do you suggest i change those?

EDIT: Also, how do you suggest i keep the vehicle perpendicular to the ground at all times? I thought it was levelspring and leveldamp but I'm not getting anywhere with those..

Posted: **Sun Oct 19, 2014 6:26 pm**

Probably lower GravityScale to around 1.0, Traction to 1.0 or 0.0 or something, Deceleration to 0.0, ReverseSpeed to 0.0, and...yeah, that should be a good starting point.

Would probably be best to use BARC or Speederbike ODF and model as template.

Posted: **Sun Oct 19, 2014 6:36 pm**

WOW.. something cool happened.. I will upload a video soon!

EDIT: here is the video:

http://social.xfire.com/video/62dded

sorry for the music.. I'm on an 80s stint.. and it just fit so well..

EDIT: here is the odf of that "glider" for those interested

Hidden/Spoiler:

[GameObjectClass]

ClassLabel 		= "hover"

GeometryName 	= "rep_hover_barcspeeder.msh"

[Properties]

WaterEffect 			= "com_sfx_waterwake_sm"

FLYERSECTION 			= "BODY"

VehicleType 			= "light"

Label 				= "Speederbike"

MapTexture 			= "speederbike_icon"

HealthTexture 			= "HUD_speederbike_icon"

MapScale 			= 1.5

ExplosionName			= "rep_hover_speederbike_exp"

GeometryName 			= "rep_hover_barcspeeder"

CollisionThreshold		= "4.0 20.0 0.0"

CollisionScale 			= "0.0 0 0"

//CollisionScale 			= "1.0 -0.5 0"

//FirstPerson       		= "rep\repspbk;rep_1st_cockpit_speederbike"

VehiclePosition			= "common.vehiclepositions.pilot"

WakeEffect			= "dustwake"

WaterEffect			= "com_sfx_waterwake_sm"

PilotPosition 			= "hp_rider"

Pilot9Pose	 		= "barc_9pose"

AnimationName 			= "rep_hover_barcspeeder"

FinAnimation			= "barcspeeder_9pose"

MaxHealth 			= 200.0

//HitLocation			= "p_crithit 0"

TimeRequiredToEject	=	"0.5"

EjectResistance			= "0.01"

TimeTilReboard			= "5.0"

DamageStartPercent            	= 70.0

DamageStopPercent             	= 50.0

DamageEffect                  	= "com_sfx_vehiclespark"

DamageEffectScale		= 0.4

DamageInheritVelocity		= 0.75

DamageAttachPoint             	= "hp_damage_1"

DamageStartPercent            	= 50.0

DamageStopPercent             	= 10.0

DamageEffect                  	= "com_sfx_vehiclesmoke"

DamageEffectScale		= 0.4

DamageInheritVelocity		= 0.75

DamageAttachPoint             	= "hp_damage_1"

DamageStartPercent            	= 10.0

DamageStopPercent             	= 0.0

DamageEffect                  	= "com_sfx_vehicleflame"

DamageEffectScale		= 0.2

DamageInheritVelocity		= 0.75

DamageAttachPoint             	= "hp_damage_1"

DamageStartPercent            	= 30.0

DamageStopPercent             	= 0.0

DamageEffect                  	= "com_sfx_vehiclesmoke"

DamageEffectScale		= 0.4

DamageInheritVelocity		= 0.75

DamageAttachPoint             	= "hp_damage_2"

DamageStartPercent            	= 20.0

DamageStopPercent             	= 0.0

DamageEffect                  	= "com_sfx_vehicleflame"

DamageEffectScale		= 0.2

DamageInheritVelocity		= 0.75

DamageAttachPoint             	= "hp_damage_3"

SetAltitude			= 0.3 //.85

GravityScale			= 1.0 //4.0  //2

Acceleration 			= 30.0

Deceleration			= 0.0 //60.0

Traction			= 1.0 //35.0

ForwardSpeed			= 28.0

ReverseSpeed			= 0.0 //6.0

StrafeSpeed			= 3.0

EnergyBar						= 50

EnergyAutoRestore		= 15

EnergyBoostDrain		= 20

BoostSpeed					= 40

BoostAcceleration		= 100.0

BoostFOV						= 60

//AddSpringBody = "0.0 0.7 1.5 1.4"

//BodyOmegaXSpringFactor = -2.0

//AddSpringBody = "-0.5 0.7 -1.0 1.4"

//AddSpringBody = "0.5 0.7 -1.0 1.4"

VelocitySpring = 5

VelocityDamp = 2.5

OmegaXSpring = 3.0

OmegaXDamp = 2.5

OmegaZSpring = 5.0

OmegaZDamp = 1.8

SpinRate			= 1.3

TurnRate			= 1.4

BoostTurnMultiplier = 1.0

TurnFilter			= 15.0

PitchRate			= 0.5

StrafeRollAngle		= 0.0

ThrustPitchAngle	= 0.0

BankAngle			= 0.002

BankFilter			= 3.0

LevelSpring			=  10.0

LevelDamp			= 5.0

JumpTimeMin      = 0.1

JumpTimeMax      = 0.35

JumpForce        = 50.0

JumpMinSpeedMult = 0.4

JumpEnergyPerSec = 100.0

//PCPitchRate 			= 15.0

//PCSpinRate			= 15.0

//PCTurnRate 			= 25.0

EyePointOffset 			= "0.0 1.0 0.0"

TrackCenter			= "0 2.5 -6"

TrackOffset 			= "0.0 0.0 0.0"

TiltValue			= "5.0"

CockpitTension			= "12"

NormalDirection 		= "0.0 -10.0 0.0"

PitchLimits			= "-5.0 5.0"

YawLimits			= "-15.0 15.0"

WeaponName 			= "rep_weap_hover_speederbike_cannon"

WeaponAmmo 			= "0"

AimerNodeName 			= "aimer_frontleft_gun"

FirePointName			= "hp_firefront_L"

BarrelNodeName 		= "hp_firefront_L"

BarrelLength 			= "2.0"

AimerPitchLimits		= "-15.0 15.0"

AimerYawLimits			= "-25.0 25.0"

NextAimer           = "-"

AimerNodeName 			= "aimer_frontright_gun"

FirePointName			= "hp_firefront_R"

BarrelNodeName 		= "hp_firefront_R"

BarrelLength 			= "2.0"

AimerPitchLimits		= "-15.0 15.0"

AimerYawLimits			= "-25.0 25.0"

//BlurEffect			= 0.5 //the closer to 1 the greater the blur

//BlurStart			= 0.8 //percentage of maxspeed where blur starts

AISizeType			= "MEDIUM"

NoCombatInterrupt		= 1

//AvailableForAnyTeam		= 1

CHUNKSECTION 			= "CHUNK1"

ChunkGeometryName 		= "rep_hover_barcspeeder_chunk1"

ChunkNodeName 			= ""

ChunkTerrainCollisions 		= "4"

ChunkTerrainEffect 		= "dirtspray"

ChunkPhysics 			= "FULL"

ChunkOmega 			= "0.0 0.0 0.0"

CHUNKSECTION 			= "CHUNK2"

ChunkGeometryName 		= "rep_hover_barcspeeder_chunk2"

ChunkNodeName 			= ""

ChunkTerrainCollisions 		= "4"

ChunkTerrainEffect 		= "dirtspray"

ChunkPhysics 			= "FULL"

ChunkOmega 			= "0.0 0.0 0.0"

CHUNKSECTION 			= "CHUNK3"

ChunkGeometryName 		= "rep_hover_barcspeeder_chunk3"

ChunkNodeName 			= ""

ChunkTerrainCollisions 		= "4"

ChunkTerrainEffect 		= "dirtspray"

ChunkPhysics 			= "FULL"

ChunkOmega 			= "0.0 0.0 0.0"

CHUNKSECTION 			= "CHUNK4"

ChunkGeometryName 		= "rep_hover_barcspeeder_chunk4"

ChunkNodeName 			= ""

ChunkTerrainCollisions 		= "4"

ChunkTerrainEffect 		= "dirtspray"

ChunkPhysics 			= "FULL"

ChunkOmega 			= "0.0 0.0 0.0"

CHUNKSECTION 			= "CHUNK5"

ChunkGeometryName 		= "rep_hover_barcspeeder_chunk5"

ChunkNodeName 			= ""

ChunkTerrainCollisions 		= "4"

ChunkTerrainEffect 		= "dirtspray"

ChunkPhysics 			= "FULL"

ChunkOmega 			= "0.0 0.0 0.0"

VOUnitType                      = 134

EngineSound 			= "speederbike_engine_parameterized"

HurtSound      			= ""

DeathSound   	= "com_weap_obj_small_exp"

VehicleCollisionSound   ="com_veh_collision_sm"

TurnOnSound    			= ""

TurnOffSound   			= ""

Music       			= ""

CisMusic			= "cis_vehicle"

RepMusic			= "rep_vehicle"

MusicSpeed  			= "0.5"

MusicDelay  			= "3.0"

GroundedSound  			= ""

GroundedHeight 			= ""

//BoostSound          		= "imp_hover_speederbike_boost_on      0.5 1"

//BoostSound          		= "imp_hover_speederbike_boost_on_max  0.9 1"

//BoostSound          		= "imp_hover_speederbike_boost_off_max 0.8 0"

//BoostSound          		= "imp_hover_speederbike_boost_off     0.4 0"

FoleyFXGroup    		= "metal_foley"

Posted: **Sun Oct 19, 2014 7:31 pm**

HAHAHAHA! That music is perfect.

Posted: **Sun Oct 19, 2014 7:33 pm**

Sweet! Hmm. You might actually wanna make the GravityScale higher then in that case... Try a value of 20.0 or so.

Posted: **Sun Oct 19, 2014 7:45 pm**

thats better.. although the vehicle sinks in to the ground... and is horizontal the whole way down.. is there any way to make it tilt forward like a normal sled (and not bob back and forth?)

Posted: **Sun Oct 19, 2014 7:46 pm**

Try raising SetAltitude and GravityScale.

Posted: **Sun Oct 19, 2014 10:48 pm**

can anyone define these?

VelocitySpring = 5
VelocityDamp = 2.5
OmegaXSpring = 3.0
OmegaXDamp = 2.5
OmegaZSpring = 5.0
OmegaZDamp = 1.8

EDIT: also this

BodyOmegaXSpringFactor

maybe a general definition of omega in this context would help

I'm still struggling to get the angle of the vehicle to NOT level out at certain inclines

Posted: **Mon Oct 20, 2014 12:54 am**

This should help somewhat: viewtopic.php?p=483228#p483228

re: omega, These should help:

http://en.wikipedia.org/wiki/Angular_velocity
https://www.boundless.com/physics/textb ... -321-6953/
http://en.wikipedia.org/wiki/Lambert_W_function

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