How to make a simple ladder?

Questions & Answers
1

This is the script i made without really thinking. I’ve never actually made a script on my own without anybodys help but i want to be able to. So this is the script i made randomly to show the basic idea of what i want to happen
var canClimb : false;

function Update () {
 if (canClimb = true) && (Input.GetButtonDown(KeyCode.W)) {
 	transform.Translate (Vector3(0,0,1) * Time.deltaTime*speed);
 }
 if (canClimb = true) && (Input.GetButtonDown(KeyCode.S)) {
 	transform.Translate (Vector3(0,0,-1) * Time.deltaTime*speed);
}
function OnTriggerEnter () {
	canClimb = true;
}
function OnTriggerExit () {
	canClimb = false;
}

Okay, so i want it so that when a player enters a collider the letter w makes you go up and the letter s makes you go down. What i need to do is make it actually work. Like i know this would never work because unity doesnt know what to move up, but i dont know how to tell it what to move up. I know you can use tags but i dont know how to do that. So tell me if this script is crap and useless, or help me fix it mabye? I just want to have a ladder basically. Its first person so no need for animation.

2

I’m going to assume that the script is attached to the ladder, if so, this is what you use

var playerObject : GameObject;
var canClimb = false;
var speed : float = 1;

function Start () {
	playerObject = gameObject.Find("Player");
}

function OnCollisionEnter (coll : Collision){
	if(coll.gameObject == playerObject){
		canClimb = true;
	}
}

function OnCollisionExit (coll2 : Collision){
	if(coll2.gameObject == playerObject){
		canClimb = false;
	}
}
function Update () {
	if(canClimb){
		if(Input.GetKey(KeyCode.W)){
			playerObject.transform.Translate (Vector3(0,1,0) * Time.deltaTime*speed);
		}
		if(Input.GetKey(KeyCode.S)){
			playerObject.transform.Translate (Vector3(0,-1,0) * Time.deltaTime*speed);
		}
	}
}

the above script doesn’t find an object with the tag “Player”, but rather finds the game object called “Player”

4

@awesomeface’s answer in C#, and doesn’t require gameobject’s name to be playerObject. Just need tag to be “Player”, and it should be that anyways :stuck_out_tongue:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Ladder : MonoBehaviour {

	GameObject playerOBJ;
	bool canClimb = false;
	float speed = 1;

	void OnCollisionEnter(Collision coll)
	{
		if (coll.gameObject.tag == "Player")
		{
			canClimb = true;
			playerOBJ = coll.gameObject;
		}
	}

	void OnCollisionExit(Collision coll2)
	{
		if (coll2.gameObject.tag == "Player")
		{
			canClimb = false;
			playerOBJ = null;
		}
	}
	void Update()
	{
		if (canClimb)
		{
			if (Input.GetKey(KeyCode.W))
			{
				playerOBJ.transform.Translate(new Vector3(0, 1, 0) * Time.deltaTime * speed);
			}
			if (Input.GetKey(KeyCode.S))
			{
				playerOBJ.transform.Translate(new Vector3(0, -1, 0) * Time.deltaTime * speed);
			}
		}
	}
}
3

Hi, try using animations with a trigger so something like:

function OnTriggerEnter() {
	animation.Play();
}

Hope this helps!