koobas.hobune.stream
help with character respawn after death (javascript)
Hi all, I am using this script (under this text) for a 2D platform game (my knowledge of programming is very limited). What I am trying to do is make the player respawn after death.
character controller script:
public var skin : GUISkin; //GUI skin
public var mesh : GameObject; //Mesh
public var texMove : Texture2D[]; //Move texture
public var texJump : Texture2D; //Jump texture
public var audioJump : AudioClip; //Jump sound
public var audioDead : AudioClip; //Dead sound
private var selectedTex : int; //Selected texture
public var texUpdateTime : float; //Texture update time
private var tmpTexUpdateTime : float; //Tmp texture update time
public var moveSpeed : float; //Move speed
public var jumpSpeed : float; //Jump speed
public var gravity : float; //Gravity
private var dir : Vector3; //The direction the player is movin
private var rightTouchPad : GameObject; //Right touchpad
private var leftTouchPad : GameObject; //Left touchpad
var dead = false; //Are we dead
private var controller : CharacterController; //The character controller
function Start ()
{
//Find the character controller
controller = GetComponent(CharacterController);
//Screen orientation to landscape left
Screen.orientation = ScreenOrientation.LandscapeLeft;
//Find left touchpad
leftTouchPad = GameObject.Find("LeftTouchPad");
//Find right touchpad
rightTouchPad = GameObject.Find("RightTouchPad");
//Start SetupJoysticks
StartCoroutine("SetupJoysticks");
//Set sleep time to never
Screen.sleepTimeout = SleepTimeout.NeverSleep;
}
function Update ()
{
//If we are not dead
if (!dead)
{
//Update
MoveUpdate();
TexUpdate();
}
}
function MoveUpdate()
{
//If we hit a object
var hit : RaycastHit;
if (Physics.Raycast(transform.position, Vector3.up, hit, 0.5f))
{
//If it is not the player
if (hit.transform.gameObject.tag != "Player")
{
//Set dir y to -1
dir.y = -1;
}
}
//If we are grounded
if (controller.isGrounded)
{
//If the game is not running on a android device
if (Application.platform != RuntimePlatform.Android)
{
//Set dir x to Horizontal
dir.x = Input.GetAxis("Horizontal") * moveSpeed;
//If we get Space key down
if (Input.GetKeyDown(KeyCode.Space))
{
//Set dir y to jumpSpeed
dir.y = jumpSpeed;
//Play jump sound
audio.clip = audioJump;
audio.Play();
}
}
//If the game is running on a android device
else
{
//Get left touchpad position x
var pX = leftTouchPad.GetComponent(Joystick).position.x;
//Get left touchpad tap count
var tC = rightTouchPad.GetComponent(Joystick).tapCount;
//Set dir x to touchpad x position
dir.x = pX * moveSpeed;
//If touchpad tap count are not 0
if (tC != 0)
{
//Set dir y to jumpSpeed
dir.y = jumpSpeed;
//Play jump sound
audio.clip = audioJump;
audio.Play();
}
}
}
//If we are not grounded
else
{
//Set dir y to gravity
dir.y -= gravity * Time.deltaTime;
}
//Move the player
controller.Move(dir * Time.smoothDeltaTime);
}
function TexUpdate()
{
//If we are not grounded
if (!controller.isGrounded)
{
//Set main texture to jump texture
mesh.renderer.material.mainTexture = texJump;
return;
}
//If the game is not running on a android device
if (Application.platform != RuntimePlatform.Android)
{
//Get Horizontal
var h = Input.GetAxis("Horizontal");
//If Horizontal is not 0
if (h != 0)
{
//If Horizontal is bigger than 0
if (h > 0)
{
//Set scale to 1,1,1
mesh.transform.localScale = Vector3(1,1,1);
}
//If Horizontal is less than 0
else
{
//Set scale to -1,1,1
mesh.transform.localScale = Vector3(-1,1,1);
}
}
//If Horizontal is 0
else
{
//Set main texture to move texture
mesh.renderer.material.mainTexture = texMove[0];
return;
}
}
//If the game is running on a android device
else
{
//Get left touchpad x position
var pX = leftTouchPad.GetComponent(Joystick).position.x;
//If touchpad x position is not 0
if (pX != 0)
{
//If touchpad x position is bigger than 0
if (pX > 0)
{
//Set scale to 1,1,1
mesh.transform.localScale = Vector3(1,1,1);
}
//If touchpad x position is less than 0
else
{
//Set scale to -1,1,1
mesh.transform.localScale = Vector3(-1,1,1);
}
}
else
{
//Set main texture to move texture
mesh.renderer.material.mainTexture = texMove[0];
return;
}
}
//If tmpTexUpdateTime is bigger than texUpdateTime
if (tmpTexUpdateTime > texUpdateTime)
{
//Set tmpTexUpdateTime to 0
tmpTexUpdateTime = 0;
//Add one to selectedTex
selectedTex++;
//If selectedTex si bigger than texMove.Length - 1
if (selectedTex > texMove.Length - 1)
{
//Set selectedTex to 0
selectedTex = 0;
}
//Set main texture to move texture
mesh.renderer.material.mainTexture = texMove[selectedTex];
}
else
{
//Add 1 to tmpTexUpdateTime
tmpTexUpdateTime += 1 * Time.deltaTime;
}
}
function OnTriggerEnter(other : Collider)
{
//If we are in a enemy trigger
if (other.tag == "Enemy")
{
//Play dead sound
audio.clip = audioDead;
audio.Play();
//Dont show renderer
mesh.renderer.enabled = false;
//Kill
dead = true;
}
}
// function OnGUI()
// {
// GUI.skin = skin;
//Menu Button
// if(GUI.Button(new Rect(Screen.width - 120,0,120,40),"Menu"))
// {
// Application.LoadLevel("Menu");
// }
//If we are dead
// if (dead)
// {
//Play Again Button
// if(GUI.Button(new Rect(Screen.width / 2 - 90,Screen.height / 2 - 60,180,50),"Play Again"))
// {
// Application.LoadLevel("Game 3");
// }
//Menu Button
// if(GUI.Button(new Rect(Screen.width / 2 - 90,Screen.height / 2,180,50),"Menu"))
// {
// Application.LoadLevel("Menu");
// }
// }
// }
function SetupJoysticks()
{
//Set touchpad position
leftTouchPad.transform.position = Vector3(0,0,0);
rightTouchPad.transform.position = Vector3(1,0,0);
//Wait 1 second
yield WaitForSeconds(1);
//Start the touchpads
leftTouchPad.GetComponent(Joystick).StartGame();
rightTouchPad.GetComponent(Joystick).StartGame();
}
I don't know how to alter this script to achieve this without messing up the character controller.
I have tried to write a respawn script (using answers from this site) this is what I have come up with (try not to laugh!):
static var Counter : int = 0;
var respawn : Transform;
var Ninja : GameObject;
function Update () {
var dead : GameObject = GameObject.FindWithTag("goal"); //more efficient than Find
var script : Game3_Player = dead.GetComponent(Game3_Player); //get script instance
if(script.dead) {
Respawn();
}
}
function Respawn(){
//wait for 1 second
yield WaitForSeconds(1);
//take a life off lives
lives_counter.Counter =-1;
//spawn Player at spawnpoint
Instantiate(Ninja, respawn.transform.position, respawn.transform.rotation);
//print msg for debugging
Debug.Log("respawned");
}
I have this respawn script attached to an empty game object "script_manager", in the inspector on this script i have respawn populated with my spawnpoint, and ninja populated with my player (which is tagged with "goal" tag), (character controller) object.
when I play and walk into the enemy my player dies but doesn't respawn and I'm getting this error:-
NullReferenceException: Object reference not set to an instance of an object respawn_after_death_script.Update () (at Assets/Game 3/Script/Javascript/respawn_after_death_script.js:9)
any help or advice would be appriciated, thankyou
In general, an exception is thrown (http://msdn.microsoft.com/en-us/library/5b2yeyab.aspx) when something unexpected happens.
A NullReferenceException is thrown when a a program tries to access (use) a reference to an object, but the reference has a null value.
For example this code:
var script : Game3_Player = dead.GetComponent(Game3_Player);
would throw a NullReferenceException if the "dead" variable is set to "null". A reference variable is null if you never assign it a value or if it's set explicitely to null.
My suggestion would be that you use MonoDevelop to debug your code inside Respawn(), to see the values of the variables.
You read about using MonoDevelop with Unity here :http://docs.unity3d.com/Documentation/Manual/HOWTO-MonoDevelop.html
In the Game3_Player script dead is either true or false, am I right in understaning that "null" means no value/nothing set? if so surely true or false is a value? (forgive me if i'm getting this totally wrong, i'm still climbing the very steep learning curve!)
it's pointing specifically to this line of code when i double click the log: if(script.dead) {
"dead" is a boolean in the first script.
and "dead" is a reference to a GameObject in the second script.
Try rena$$anonymous$$g them to distinguish them more easily
var dead : GameObject = GameObject.FindWithTag("goal"); //more efficient than Find var dead : Game3_Player = dead.GetComponent(Game3_Player); //get script instance if(script.dead) {
what I was trying to do here (using script from answers) is access the dead var from the script on the character and if dead is true then do respawn.
to try and simplify what i'm trying to do (i'm getting in a right mess) is from my respawn script see if the player is dead from character controller script and if dead = true then respawn $$anonymous$$us one life at my spawn point.
Why don't you assign the "dead: GameObject" variable directly when you create the Player? This is better than doing a Find.
You would define it outside of the Update function in the Respawn script and when you create the Player set the reference to it.
That would be better than checking for that object in every frame.
