二手車腳本

⑴ 新手怎麼學做腳本

寫一個簡單的拍攝腳本需要畫面內容、景別、分鏡畫面、運鏡方式、取景角度/機位、畫面旁白、仔返拍攝地點、畫面時長、背景樂、總結。

短視頻運營實時更新
鏈接：https://pan..com/s/1QTf0ACiCD39vHlybC4vOhA

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⑵ 是不是更換了汽車發動機電腦（ECU）就一定要編程了哪位大蝦能給我說下具體的編程步驟啊（以大眾車系為

其實ECU並不僅僅是發動機電腦，而是行車電腦。換句話說，它控制的並不僅僅是發動機。它同時控制著你的油門、檔位以及電子輔助設備的介入時機等等。

也不是說換了ECU就需要重新編程。一般來說對應一種車型的ECU都有一套自帶的程序在裡面。你所需要進行的只是調校，也就是依據你自己的喜好來調整汽車換檔的時機、電子輔助介入時機、油門對應比例等等參數。而如果從零開始編程，這不是我們能乾的事。中國的汽車企業能夠進行ECU編程的也沒有幾個。

現在的改車行說給你ECU編程一般不是吹牛就是沒跟你說清楚。通常做的是把某個已經指定好的參數拷貝到你已經有的行車電腦里，這樣就可以模擬職業車手的駕駛風格，類似玩游戲里的腳本。
ECU也一般沒有更換的必要，這在汽車設計的初期就已經指定好了，如果你沒有動整車的結構和動力系統，ECU絕對是夠用的。

發動機（Engine）是一種能夠把其它形式的能轉化為機械能的機器，包括如內燃機（往復活塞式發動機）、外燃機（斯特林發動機、蒸汽機等）、噴氣發動機、電動機等。如內燃機通常是把化學能轉化為機械能。

發動機既適用於動力發生裝置，也可指包括動力裝置的整個機器（如：汽油發動機、航空發動機）。發動機最早誕生在英國，所以，發動機的概念也源於英語，它的本義是指那種「產生動力的機械裝置」。

外燃機

外燃機，就是說它的燃料在發動機的外部燃燒，1816年由蘇格蘭的R.斯特林所發明，故又稱斯特林發動機。發動機將這種燃燒產生的熱能轉化成動能，瓦特改良的蒸汽機就是一種典型的外燃機，當大量的煤燃燒產生熱能把水加熱成大量的水蒸汽時，高壓便產生了，然後這種高壓又推動機械做功，從而完成了熱能向動能的轉變。

內燃機

明白了什麼是外燃機，也就知道了什麼是內燃機。內燃機即往復活塞式發動機，這一類型的發動機與外燃機的最大不同在於它的燃料在其內部燃燒。內燃機的種類十分繁多，常見的汽油機、柴油機是典型的內燃機。

⑶ 求一段unity3D汽車自動駕駛的腳本代碼

1、把腳本直接連到汽車車身網格上，車身要有Rigidbody Component，要有四個輪子網格做子物體。 要想有聲音的話還要有AudioSource Component。

2、打開Inspector，選擇汽車腳本，把四個輪子連接到相對應的Transform參數上。設置wheelRadius參數為你輪子網格的大小。WheelCollider是自動生成的，所以無需手動添加。這樣就能保證運行了，其他的聲音和灰塵可以再添加。

腳本源代碼如下：*/
#pragma strict
//maximal corner and braking acceleration capabilities
var maxCornerAccel=10.0;
var maxBrakeAccel=10.0;
//center of gravity height - effects tilting in corners
var cogY = 0.0;
//engine powerband
var minRPM = 700;
var maxRPM = 6000;
//maximum Engine Torque
var maxTorque = 400;
//automatic transmission shift points
var shiftDownRPM = 2500;
var shiftUpRPM = 5500;
//gear ratios
var gearRatios = [-2.66, 2.66, 1.78, 1.30, 1.00];
var finalDriveRatio = 3.4;
//a basic handling modifier:
//1.0 understeer
//0.0 oversteer
var handlingTendency = 0.7;
//graphical wheel objects
var wheelFR : Transform;
var wheelFL : Transform;
var wheelBR : Transform;
var wheelBL : Transform;
//suspension setup
var suspensionDistance = 0.3;
var springs = 1000;
var dampers = 200;
var wheelRadius = 0.45;
//particle effect for ground st
var groundDustEffect : Transform;
private var queryUserInput = true;
private var engineRPM : float;
private var steerVelo = 0.0;
private var brake = 0.0;
private var handbrake = 0.0;
private var steer = 0.0;
private var motor = 0.0;
//private var skidTime = 0.0;
private var onGround = false;
private var cornerSlip = 0.0;
private var driveSlip = 0.0;
private var wheelRPM : float;
private var gear = 1;
//private var skidmarks : Skidmarks;
private var wheels : WheelData[];
private var wheelY = 0.0;
private var rev = 0.0;
//Functions to be used by external scripts
//controlling the car if required
//===================================================================
//return a status string for the vehicle
function GetStatus(gui : GUIText) {
gui.text="v="+(rigidbody.velocity.magnitude * 3.6).ToString("f1") km/h\ngear= "+gear+"\nrpm= "+engineRPM.ToString("f0");
}
//return an information string for the vehicle
function GetControlString(gui : GUIText) {
gui.text="Use arrow keys to control the jeep,\nspace for handbrake."; }
//Enable or disable user controls
function SetEnableUserInput(enableInput)
{
queryUserInput=enableInput;
}
//Car physics
//===================================================================
//some whee calculation data
class WheelData{ + "
var rotation = 0.0;
var coll : WheelCollider;
var graphic : Transform;
var maxSteerAngle = 0.0;
var lastSkidMark = -1;
var powered = false;
var handbraked = false;
var originalRotation : Quaternion;
};
function Start () {
//setup wheels
wheels=new WheelData[4];
for(i=0;i<4;i++)
wheels[i] = new WheelData();

wheels[0].graphic = wheelFL;
wheels[1].graphic = wheelFR;
wheels[2].graphic = wheelBL;
wheels[3].graphic = wheelBR;
wheels[0].maxSteerAngle=30.0;
wheels[1].maxSteerAngle=30.0;
wheels[2].powered=true;
wheels[3].powered=true;
wheels[2].handbraked=true;
wheels[3].handbraked=true;
for(w in wheels)
{
if(w.graphic==null)
Debug.Log("You need to assign all four wheels for the car script!"); if(!w.graphic.transform.IsChildOf(transform))
Debug.Log("Wheels need to be children of the Object with the car script");
w.originalRotation = w.graphic.localRotation;
//create collider
colliderObject = new GameObject("WheelCollider");
colliderObject.transform.parent = transform;
colliderObject.transform.position = w.graphic.position;
w.coll = colliderObject.AddComponent(WheelCollider);
w.coll.suspensionDistance = suspensionDistance;
w.coll.suspensionSpring.spring = springs;
w.coll.suspensionSpring.damper = dampers;
//no grip, as we simulate handling ourselves
w.coll.forwardFriction.stiffness = 0;
w.coll.sidewaysFriction.stiffness = 0;
w.coll.radius = wheelRadius;
}
//get wheel height (height forces are applied on)
wheelY=wheels[0].graphic.localPosition.y;

//setup center of gravity
rigidbody.centerOfMass.y = cogY;

//find skidmark object
// skidmarks = FindObjectOfType(typeof(Skidmarks));

//shift to first
gear=1;
}
//update wheel status
function UpdateWheels()
{
//calculate handbrake slip for traction gfx
handbrakeSlip=handbrake*rigidbody.velocity.magnitude*0.1;
if(handbrakeSlip>1)
handbrakeSlip=1;

totalSlip=0.0;
onGround=false;
for(w in wheels)
{
//rotate wheel
w.rotation += wheelRPM / 60.0 * -rev * 360.0 * Time.fixedDeltaTime; w.rotation = Mathf.Repeat(w.rotation, 360.0);
w.graphic.localRotation= Quaternion.Euler( w.rotation, w.maxSteerAngle*steer, 0.0 ) * w.originalRotation;
//check if wheel is on ground
if(w.coll.isGrounded)
onGround=true;

slip = cornerSlip+(w.powered?driveSlip:0.0)+(w.handbraked?handbrakeSlip:0.0); totalSlip += slip;

var hit : WheelHit;
var c : WheelCollider;
c = w.coll;
if(c.GetGroundHit(hit))
{
//if the wheel touches the ground, adjust graphical wheel position to reflect springs

w.graphic.localPosition.y-=Vector3.Dot(w.graphic.position-hit.point,transform.up)-w.coll.radius;

//create st on ground if appropiate
if(slip>0.5 && hit.collider.tag=="Dusty")
{
groundDustEffect.position=hit.point;

groundDustEffect.particleEmitter.worldVelocity=rigidbody.velocity*0.5; groundDustEffect.particleEmitter.minEmission=(slip-0.5)*3; groundDustEffect.particleEmitter.maxEmission=(slip-0.5)*3;
groundDustEffect.particleEmitter.Emit(); }

//and skid marks
/*if(slip>0.75 && skidmarks != null)

w.lastSkidMark=skidmarks.AddSkidMark(hit.point,hit.normal,(slip-0.75)*2,w.lastSkidMark);
else
w.lastSkidMark=-1; */
}
// else w.lastSkidMark=-1;
}
totalSlip/=wheels.length;
}
//Automatically shift gears
function AutomaticTransmission()
{
if(gear>0)
{
if(engineRPM>shiftUpRPM&&gear<gearRatios.length-1)
gear++;
if(engineRPM<shiftDownRPM&&gear>1)
gear--;
}
}
//Calculate engine acceleration force for current RPM and trottle
function CalcEngine() : float
{
if(brake+handbrake>0.；motor=0.0;；//ifcarisairborne,justre；if(!onGround)；engineRPM+=(motor-0.3)*2；engineRPM=Mathf.Clamp(en；return0.0;；else；AutomaticTransmission();；engineRPM=whee
if(brake+handbrake>0.1)

motor=0.0;

//if car is airborne, just rev engine

if(!onGround)

{

engineRPM += (motor-0.3)*25000.0*Time.deltaTime;

engineRPM = Mathf.Clamp(engineRPM,minRPM,maxRPM);

return 0.0;

}

else

{

AutomaticTransmission();

engineRPM=wheelRPM*gearRatios[gear]*finalDriveRatio;

if(engineRPM<minRPM)

engineRPM=minRPM;

if(engineRPM<maxRPM)

{

//fake a basic torque curve

x = (2*(engineRPM/maxRPM)-1);

torqueCurve = 0.5*(-x*x+2);

torqueToForceRatio = gearRatios[gear]*finalDriveRatio/wheelRadius; return
motor*maxTorque*torqueCurve*torqueToForceRatio;

}

else

//rpm delimiter

return 0.0;

}

}

//Car physics

//The physics of this car are really a trial-and-error based extension of
//basic "Asteriods" physics -- so you will get a pretty arcade-like feel. //This
may or may not be what you want, for a more physical approach research //the
wheel colliders

function HandlePhysics () {

var velo=rigidbody.velocity;

wheelRPM=velo.magnitude*60.0*0.5;

rigidbody.angularVelocity=new

Vector3(rigidbody.angularVelocity.x,0.0,rigidbody.angularVelocity.z);
dir=transform.TransformDirection(Vector3.forward);

flatDir=Vector3.Normalize(new Vector3(dir.x,0,dir.z));

flatVelo=new Vector3(velo.x,0,velo.z);

rev=Mathf.Sign(Vector3.Dot(flatVelo,flatDir));

//when moving backwards or standing and brake is pressed, switch to
reverse

if((rev<0||flatVelo.sqrMagnitude<0.5)&&brake>0.1)

gear=0;

if(gear==0)

{

//when in reverse, flip brake and gas

tmp=brake;

brake=motor;

motor=tmp;

//when moving forward or standing and gas is pressed, switch to drive
if((rev>0||flatVelo.sqrMagnitude<0.5)&&brake>0.1)

gear=1;

}

engineForce=flatDir*CalcEngine();

totalbrake=brake+handbrake*0.5;

if(totalbrake>1.0)totalbrake=1.0;

brakeForce=-flatVelo.normalized*totalbrake*rigidbody.mass*maxBrakeAccel;
flatDir*=flatVelo.magnitude;

flatDir=Quaternion.AngleAxis(steer*30.0,Vector3.up)*flatDir;

flatDir*=rev;

diff=(flatVelo-flatDir).magnitude;

cornerAccel=maxCornerAccel;

if(cornerAccel>diff)cornerAccel=diff;

cornerForce=-(flatVelo-flatDir).normalized*cornerAccel*rigidbody.mass;
cornerSlip=Mathf.Pow(cornerAccel/maxCornerAccel,3);

rigidbody.AddForceAtPosition(brakeForce+engineForce+cornerForce,transform.position+transform.up*wheelY);

handbrakeFactor=1+handbrake*4;

if(rev<0)

handbrakeFactor=1;

veloSteer=((15/(2*velo.magnitude+1))+1)*handbrakeFactor;

steerGrip=(1-handlingTendency*cornerSlip);

if(rev*steer*steerVelo<0)

steerGrip=1;

maxRotSteer=2*Time.fixedDeltaTime*handbrakeFactor*steerGrip;

fVelo=velo.magnitude;

veloFactor=fVelo<1.0?fVelo:Mathf.Pow(velo.magnitude,0.3);

steerVeloInput=rev*steer*veloFactor*0.5*Time.fixedDeltaTime*handbrakeFactor;
if(velo.magnitude<0.1)

steerVeloInput=0;

if(steerVeloInput>steerVelo)

{

steerVelo+=0.02*Time.fixedDeltaTime*veloSteer;

if(steerVeloInput<steerVelo)

steerVelo=steerVeloInput;

}

else

{

steerVelo-=0.02*Time.fixedDeltaTime*veloSteer;

if(steerVeloInput>steerVelo)

steerVelo=steerVeloInput;

}

steerVelo=Mathf.Clamp(steerVelo,-maxRotSteer,maxRotSteer);
transform.Rotate(Vector3.up*steerVelo*57.295788);

}

function FixedUpdate () {

//query input axes if necessarry

if(queryUserInput)

{

brake = Mathf.Clamp01(-Input.GetAxis("Vertical"));

handbrake = Input.GetButton("Jump")?1.0:0.0;

steer = Input.GetAxis("Horizontal");

motor = Mathf.Clamp01(Input.GetAxis("Vertical"));

}

else

{

motor = 0;

steer = 0;

brake = 0;

handbrake = 0;

}

//if car is on ground calculate handling, otherwise just rev the engine
if(onGround)

HandlePhysics();

else

CalcEngine();

//wheel GFX

UpdateWheels();

//engine sounds

audio.pitch=0.5+0.2*motor+0.8*engineRPM/maxRPM;

audio.volume=0.5+0.8*motor+0.2*engineRPM/maxRPM;

}

//Called by DamageReceiver if boat destroyed

function Detonate()

{

//destroy wheels

for( w in wheels )

w.coll.gameObject.active=false; //no more car physics

enabled=false;

}