C#•7mo ago

how do i set a character controller as disabled or active in a c# code?

hey so quick question about the character controller, its very nice and easy but in my game i have traps that tp the player to a set location after taking damage, but it doesnt really work with character controller, is it because its using transform.position?
if (other.CompareTag("Player")) { player = other.GetComponent<HealthUiManager>(); if (player != null) { player.TakeDamage(damageAmount); player.transform.position = respawnPosition; } }

19 Replies

ULTIMAOP•7mo ago

please ping me when you respond so i dont forget to look

Buddy•7mo ago

You need to disable the character controller first, then set the position after that you can enable it again. It is a known thing when using CharacterController component Also, prefer to use TryGetComponent instead of GetComponent.

ULTIMAOP•7mo ago

i dont understand? disable the component character controller, then set the position, then enable it again?

Buddy•7mo ago

Correct

ULTIMAOP•7mo ago

alright ill try, thanks

Buddy•7mo ago

Regarding this. GetComponent allocates memory even if the result is null, however. Unity hates memory allocation, so prefer TryGetComponent as it doesn't allocate memory if the result is null You can use it like this

if (TryGetComponent(out HingeJoint hinge))
{
    hinge.useSpring = false;
}

if (TryGetComponent(out HingeJoint hinge))
{
    hinge.useSpring = false;
}

Or reversed

if (!TryGetComponent(out HingeJoint hinge))
{
    Debug.Log("Could not find Hinge component");
    return;
}
hinge.useSpring = false;

if (!TryGetComponent(out HingeJoint hinge))
{
    Debug.Log("Could not find Hinge component");
    return;
}
hinge.useSpring = false;

ULTIMAOP•7mo ago

ah ok, thanks for the tip when i try to use trygetcomponent it gives me an error, if (other.CompareTag("Player")) { player = other.TryGetComponent<HealthUiManager>(); if (player != null) { player.TakeDamage(damageAmount); player.transform.position = respawnPosition; } }

Buddy•7mo ago

My apologies, forgot to link to docs https://docs.unity3d.com/ScriptReference/Component.TryGetComponent.html TryGetComponent returns a boolean whether it succeeded or not. true / false it doesn't return the instance itself you need the out keyword, as seen in the example So in your case it would become

if (other.TryGetComponent(out HealthUiManager player))
{
    player.TakeDamage(damageAmount);

    player.transform.position = respawnPosition;
}

if (other.TryGetComponent(out HealthUiManager player))
{
    player.TakeDamage(damageAmount);

    player.transform.position = respawnPosition;
}

ULTIMAOP•7mo ago

yeah ok, thanks

Buddy•7mo ago

anytime.

ULTIMAOP•7mo ago

im very new to c# if you couldnt tell lol

Buddy•7mo ago

It's fine, we all have been new once. :^)

ULTIMAOP•7mo ago

how do i even disable a component in a C#? its not a setactive as far as i could tell, i tried getting the component then setting it as false but that didnt work @Buddy

Buddy•7mo ago

You can do this

private CharacterController controller;
void Awake()
{
    controller = GetComponent<CharacterController>();
}

private CharacterController controller;
void Awake()
{
    controller = GetComponent<CharacterController>();
}

ULTIMAOP•7mo ago

yeah im struggling with another problem now lol

Buddy•7mo ago

I see, with what? You don't need to create multiple help threads per question, if they are about the same subject (in this case Unity).

ULTIMAOP•7mo ago

i havent, but basically for my traps that i use , the code is in the trap, not the player, as i want variable damage amounts, so when i try to disable the character controller, it cant because its not able to get it. https://paste.mod.gg/mmvbehcbhszx/0

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Buddy•7mo ago

Also, please avoid cross-posting. IE posting both in help and in other channels As I mentioned, disable, teleport, enable.

private void OnTriggerEnter(Collider other)
{
  if (other.CompareTag("Trap"))
      player.TakeDamage(damageAmount); // This line will only be executed if tag is "Trap"
  
  // Everything after will always be executed.
  controller.enabled = false;
  // add TELEPORT code HERE
  controller.enabled = true;
}

private void OnTriggerEnter(Collider other)
{
  if (other.CompareTag("Trap"))
      player.TakeDamage(damageAmount); // This line will only be executed if tag is "Trap"
  
  // Everything after will always be executed.
  controller.enabled = false;
  // add TELEPORT code HERE
  controller.enabled = true;
}

Also, so you know, if you have no code block after an if-statement it will only work with a single line.

ULTIMAOP•7mo ago

i figured it all out, i had the voids i was trying to take over to another script as private

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how do i set a character controller as disabled or active in a c# code?