// Various examples of Input usage in Unity
using UnityEngine;
using System.Collections;
public class InputExamples : MonoBehaviour {
// These strings need to be set in the Inspector to match Input Manager entries
public string horiAxis, vertAxis, jump;
public KeyCode key1;
public Vector2 speed = new Vector2(10f, 5f);
void Update() {
// Input.GetAxis will return a number between -1 and 1, with smoothing applied
// (adjust Sensitivity in Input Manager)
Debug.Log("Horizontal: " + Input.GetAxis(horiAxis));
// Input.GetAxisRaw will return a number between -1 and 1, without Sensitivity smoothing applied
Debug.Log("Vertical: " + Input.GetAxisRaw(vertAxis));
// This is often multiplied by a number to create movement
Debug.Log("Horizontal Modified: " + Input.GetAxis(horiAxis) * speed.x);
// Key pressed down
if (Input.GetKeyDown(KeyCode.T)) {
Debug.Log("Key T pressed");
}
// KeyCode can also be set in the Inspector as a variable
if (Input.GetKeyUp(key1)) {
Debug.Log("Key Released");
}
// Run only once when button is pressed
if (Input.GetButtonDown(jump)) {
Debug.Log("Jump");
}
}
}// Various Instantiate examples for Unity
using UnityEngine;
using System.Collections;
public class InstantiateExamples : MonoBehaviour {
// Set the object to be cloned in the Inspector.
public GameObject prefab;
// Set a target transform in the Inspector to clone prefab from
public Transform spawnPoint;
// Update is called once per frame
void Update() {
// Basic cloning
if (Input.GetButton("X")) {
// Pass the prefab as an argument and clone it at the spawnPoint
// spawnPoint can be set to transform for cloning the prefab at the position of this object
Instantiate(prefab, spawnPoint);
//Instantiate(prefab, transform);
}
// Advanced cloning
if (Input.GetButtonDown("Fire")) {
// Overloaded method which can be positioned and rotated
GameObject prefab1 = Instantiate(prefab, transform.position, Quaternion.identity) as GameObject;
// Make this prefab a child of the gameObject that spawned it
prefab1.transform.parent = transform;
// Destroying the prefab after a set amount of time
Destroy(prefab1, 3f);
// Accessing the cloned prefab's components. Note: The prefab needs a Rigidbody component for the next 2 lines to work
Rigidbody prefabrigidbody = prefab1.GetComponent<Rigidbody>();
prefabrigidbody.AddForce(Vector2.up * 100f);
}
}
}// Various ways of finding things in Unity
using UnityEngine;
using System.Collections;
public class FindExamples : MonoBehaviour {
// Example needs a Rigidbody component to work
private Rigidbody rigidbody, otherrigidbody, childrigidbody;
private GameObject hierarchyObject, childObject, taggedObject;
void Start() {
// Find a component attached to this GameObject
rigidbody = GetComponent<Rigidbody>();
// Find a GameObject in the Hierarchy, will check all GameObjects in the Hierarchy
hierarchyObject = GameObject.Find("Name Of Object");
// Find a GameObject in the hierarchy based on tag
taggedObject = GameObject.FindWithTag("Player");
// Can be combined to find a component on a GameObject in the Hierarchy
otherrigidbody = GameObject.FindWithTag("Player").GetComponent<Rigidbody>();
// Lowercase transform.Find can be used to search child GameObjects by name
childObject = transform.Find("Name Of Object").gameObject;
// Can also be combined to find a component on a GameObject in the Hierarchy
childrigidbody = transform.Find("Name Of Object").GetComponent<Rigidbody>();
}
}// Various ways of enabling/disabling a gameObject's components and activating/deactivating a gameObject
using UnityEngine;
using System.Collections;
public class EnableSetActiveExamples : MonoBehaviour {
public GameObject targetGameObject;
private Collider collider;
void Start() {
// SetActive can switch a gameObject on or off in the Hierarchy. Once deactivated, its components will no longer run until reactivated.
targetGameObject.SetActive(false);
// Get a collider component attached to this gameObject. Note: Collider will work with any kind of collider component.
collider = GetComponent<Collider>();
// Disable or enable a component using a bool
collider.enabled = false;
}
// Update is called once per frame
void Update() {
// Jump is space in Input Manager
if (Input.GetButtonDown("Jump")) {
// Check if a gameObject is active in the scene with activeInHierarchy
if (!targetGameObject.activeInHierarchy) {
targetGameObject.SetActive(true);
}
}
// Fire is left ctrl in Input Manager
if (Input.GetButtonDown("Fire")) {
// Check if a component is enabled
if (!collider.enabled) {
collider.enabled = true;
}
}
}
}// Various collision examples
using UnityEngine;
using System.Collections;
public class CollisionExamples : MonoBehaviour {
// Collisions/Triggers require a collider on both gameObjects and a rigidbody on at least one.
void OnCollisionEnter(Collision other) {
// Do something when another collider touches this gameObject's collider
Debug.Log("Collided with something");
// Conditional statements can be used to filter collisions/triggers
// Checking for a known tag is one option
if (other.gameObject.CompareTag("tag1")) {
Debug.Log("tag1 collision");
}
// Checking for a known name is one option
else if (other.gameObject.name.Equals("name1")) {
Debug.Log("name1 collision");
}
}
// Is Trigger needs to be selected on one of the colliders
void OnTriggerEnter(Collider other) {
// Do something if another collider overlaps this gameObject's collider
Debug.Log("Triggered by something");
}
// Collision and Trigger also have stay event
void OnTriggerStay(Collider other) {
// Do something while a collider is still overlapping with this gameObject's collider
Debug.Log("Still triggering");
}
// Collision and Trigger also have exit event
void OnCollisionExit(Collision other) {
// Do something after a collider is no longer touching this gameObject's collider
Debug.Log("Collision ended");
}
}// Various audio examples for Unity
using UnityEngine;
using System.Collections;
public class AudioExamples : MonoBehaviour {
// Attach an AudioSource component to this gameObject
private AudioSource audioSource;
// Set an audioclip in the Inspector
public AudioClip clip1;
void Start() {
// Get the AudioSource component
audioSource = GetComponent<AudioSource>();
// Plays the AudioClip set in the AudioSource component
audioSource.Play();
}
void Update() {
// AudioSource.Play() can also be paused or stopped
// Check if audioSource is playing a clip
if (audioSource.isPlaying) {
if (Input.GetButtonDown("P"))
audioSource.Pause();
else if (Input.GetButtonDown("S"))
audioSource.Stop();
// Set the pitch and volume of the clips played by Audio Source. Volume range is 0~1
audioSource.pitch = Random.Range(0.25f, 2f);
audioSource.volume = Random.Range(0.25f, 1f);
}
// PlayOneShot can be used to play a short clip
// Can't be used with Pause & Stop
if (Input.GetButtonDown("Play")) {
audioSource.PlayOneShot(clip1);
// You can give this an optional volume setting as well (0-1 range)
//audioSource.PlayOneShot(clip1, 0.5f);
}
}
}// Various IEnumerator timer examples for Unity
using UnityEngine;
using System.Collections;
public class IEnumeratorExamples : MonoBehaviour {
// Flag for checking if a coroutine is running
private bool alreadyDelayed;
// Necessary to stop a coroutine
private IEnumerator coroutine;
void Start() {
// Coroutines run in Start are only called once. No if statement + bool needed.
StartCoroutine(LoopingTimer(7f));
// Set to an IEnumerator
coroutine = LoopingTimer(1f);
StartCoroutine(coroutine);
}
void Update() {
// DelayTimerOneShot
if (Input.GetButtonDown("PlayOneShot"))
StartCoroutine(DelayTimerOneShot(1f));
// Space bar is Jump in Input Manager
if (Input.GetButtonDown("Jump"))
// This if statement ensures that a coroutine can't be run again if it is already running.
if (!alreadyDelayed)
StartCoroutine(DelayTimerLatching(3f));
if (Input.GetButtonDown("Fire")) {
// To stop a coroutine
StopCoroutine(coroutine);
Debug.Log("Stopped at " + Time.time);
}
}
// Wait for an amount of time before doing something
private IEnumerator DelayTimerOneShot(float delayLength) {
yield return new WaitForSeconds(delayLength);
Debug.Log("Delayed One Shot");
}
// Wait for an amount of time before doing something
private IEnumerator DelayTimerLatching(float delayLength) {
// Set the already delayed flag to signal that this coroutine is already running
alreadyDelayed = true;
Debug.Log("Delayed Latch");
yield return new WaitForSeconds(delayLength);
Debug.Log("Delayed Latch Released");
// Reset the already delayed flag so that this coroutine can be used once again.
alreadyDelayed = false;
}
}// Various examples of scene management
using UnityEngine;
using System.Collections;
using UnityEngine.SceneManagement;
public class SceneManagementExamples : MonoBehaviour {
// Name of new scene. Should be add the scene in build settings.
public string scene;
// Load the new scene
public void LoadScene(string newScene) {
SceneManager.LoadScene(newScene);
}
// Reload the current scene
public void ReloadScene() {
SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
}
}// Various UI examples
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class UIExamples : MonoBehaviour {
// Set the target UI Text in the Inspector
public Text uiText;
// Set the target UI image in Inspector. UI Image must be "filled" type
public Image uiImage;
private int uiNumber = 5;
void Update() {
if (Input.GetButtonDown("Jump")) {
// Basic usage
uiText.text = "CODEMAKER";
// Fill amount is in a range from 0-1. Empty
uiImage.fillAmount = 0;
} else if (Input.GetButtonDown("Fire1")) {
// Numbers must be converted to strings
uiText.text = uiNumber.ToString();
// Larger ranges of number can be converted by dividing with the max value
uiImage.fillAmount = 2.5f/uiNumber;
} else if (Input.GetButtonDown("Fire2")) {
// Numbers can be formatted to display a certain number of places
uiText.text = uiNumber.ToString("000");
// Full
uiImage.fillAmount = 1;
}
}
}