koobas.hobune.stream
Error with Update and OntrrigerEnter funtion
dear all, i tried to solve this problem alone. However this problem to tough for newbie like me. logically, i want to know how much speed that player have when enter a way (just say it is cube) this is the cube code
var data : manualscar;
data = gameObject.GetComponent("manualscar");
function OnTriggerEnter(other : Collider){
if(other.tag == "Player"){
if(data.currentSpeed < 5){
print("5");
}
}
}
and this is a player code
//to move the manual's car.
var maxSpeed = 0.0;
var minSpeed = 0.0;
var maxAcceleration = 0.0; // Controls the acceleration
var currentSpeed = 0.0;
var gear = 0;
var trackSpeed = 0;
function Update()
{
//to change the max speed, min speed, and acceleration
if(gear == 0){
currentSpeed = 0;
maxAcceleration = 0.0;
minSpeed = 0;
maxSpeed = 0;
}
else if(gear == 1){
maxAcceleration = 10.0;
minSpeed = 0;
maxSpeed = 20;
}
else if(gear == 2){
maxAcceleration = 8.0;
minSpeed = 11;
maxSpeed = 50;
}
else if(gear == 3){
maxAcceleration = 7.5;
minSpeed = 31;
maxSpeed = 80;
}
else if(gear == 4){
maxAcceleration = 6.0;
minSpeed = 51;
maxSpeed = 120;
}
else if(gear == 5){
maxAcceleration = 5.0;
minSpeed = 81;
maxSpeed = 180;
}
else{
maxAcceleration = 0.0;
minSpeed = 0;
maxSpeed = 0;
}
//to change the gear up with "1" and down with "2"
if(Input.GetKeyDown("1")){
if(gear != 5){
gear++;
}
}
if(Input.GetKeyDown("2")){
if(gear != 0){
gear--;
}
}
transform.Translate(Vector3.forward * Time.deltaTime * currentSpeed);
if(Input.GetKey("w")){
if(currentSpeed > maxSpeed){
currentSpeed -= maxAcceleration * Time.deltaTime;
if(gear == 4){
trackSpeed=currentSpeed+2;
}
else if(gear == 3){
trackSpeed=currentSpeed+1.5;
}
else if(gear == 2){
trackSpeed=currentSpeed+1;
}
else if(gear == 1){
trackSpeed=currentSpeed+0.5;
}
else{
trackSpeed=0;
}
currentSpeed = Mathf.Clamp(currentSpeed, minSpeed, trackSpeed);
}
else if(currentSpeed < minSpeed){
currentSpeed += 1 * Time.deltaTime;
trackSpeed = 0;
currentSpeed = Mathf.Clamp(currentSpeed, 0, maxSpeed);
}
else{
currentSpeed += maxAcceleration * Time.deltaTime;
currentSpeed = Mathf.Clamp(currentSpeed, minSpeed, maxSpeed);
}
}
if(Input.GetKey("s")){
if(currentSpeed <= minSpeed){
}
if(gear > 0 ){
currentSpeed -= maxAcceleration * Time.deltaTime;
currentSpeed = Mathf.Clamp(currentSpeed, minSpeed, maxSpeed);
}
}
if(currentSpeed > maxSpeed ){
}
if(gear == 0){
if(Input.GetKey("r")){
currentSpeed -= 200 * Time.deltaTime;
currentSpeed = Mathf.Clamp(currentSpeed,-10,20);
transform.Translate(Vector3.forward * Time.deltaTime * currentSpeed);
}
}
currentSpeed -= 2 * Time.deltaTime;
currentSpeed = Mathf.Clamp(currentSpeed, minSpeed, maxSpeed);
}
when i started the program there is no error, but when i hit the cube there is error like :
NullReferenceException: Object reference not set to an instance of an object
trackSpeed.OnTriggerEnter (UnityEngine.Collider other) (at Assets/script/trackSpeed.js:39)
hopefully someone know what i need. thx you very much.
but if i put funtion Update(){ code here } the program not work at all.
so the error is falling at
if(data.currentSpeed < 5){
? If so, then this part is not loading the script :
data = gameObject.GetComponent("manualscar");
either the script is not called manualscar, or it is not attached to the gameObject, therefore it is not found ( NullReferenceException: Object reference not set to an instance of an object )
how to call it? i already read other problem and their solve.. how about $$anonymous$$e? i already set it to person.
var data : manualscar;
function Start(){
data = gameObject.GetComponent(manualscar);
}
no quotes, this way it returns the type of manualscar, otherwise it returns an Object, which would need to be typecast
EDIT: put it in the start function, and it'll work
second EDIT: you still need to DECLARE the var outside though, as above
next EDIT: if you need to find the script on another object, do this:
var data : manualscar;
function Start(){
var player = GameObject.FindWithTag("Player");
data = player.GetComponent(manualscar);
}
make sure the tag matches, and this should do it;)
It needs to be inside a function .. see my edit above :)
function Start(){ var data : manualscar; data = gameObject.GetComponent(manualscar); }
function OnTriggerEnter(other : Collider){ if(other.tag == "Player"){ print(data.currentSpeed); } }
i put like that and diffrent error. Assets/script/trackSpeed.js(38,23): BCE0005: $$anonymous$$ identifier: 'data'.
that's on line number 38 of a script called "trackSpeed".. check the script trackSpeed and see what is on line 38, you are referring to a var which doesn't exist in that script(or it isn't within scope, like if you declared it inside a different function)
trackspeed .js is the name of the file. that is the print data.currentSpeed itselft
