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--- fw:unity3d:environtment2d [2014/04/04 21:48]
alfred [Colliders]
+++ fw:unity3d:environtment2d [2020/05/09 09:25] (actual)
@@ Línea 12: / Línea 12: @@
   * To **add an sprite** add it to the folder using windows explorer. To add it to the scene drag it from Project window to hierarchy or Scene window.
   * To **create multiple sprites from one** you need to change the sprite mode property from Single to Multiple. Then you can slice your sprite using the Sprite Editor tool.
+  * If you drag a set of sprites to the scene, Unity will create an animation with them.
   * You can use a sorting layer for the background. It's composed by sub-layers which will be arranged and could be locked with the aim of not edit them by accident.
 ===== Scripting =====
 ==== Basic ====
 === Inherited functions ===
-  * ''Awake()'', it's called while the script is loaded. Used to initialize instances.
+  * Lifetime functions:
-  * ''Start()''
+    * ''Awake()'', it's called while the script is loaded. Used to initialize instances. At this point it can not interact with other GameObjects.
-  * ''Update()'', update funcition, one by frame.
+    * ''Start()'', it's called after Awake(). The difference is that this method won't be called if the script is not enabled.
-  * ''FixedUpdate()'', update function to be used for physic operations. It will be called so many times as needed before drawing a frame.
+    * ''Update()'', update funcition, one by frame.
+    * ''FixedUpdate()'', update function to be used for physic operations. It will be called so many times as needed before drawing a frame.
+    * ''Destroy()'', called when the object is destroyed.
   * ''LateUpdate()''
   * ''OnDisable()''
   * ''OnGUI()''
+Properties
+  * ''transform'', contains the methods and objects to move the object.
 === Interact with objects ===
@@ Línea 28: / Línea 34: @@
   * ''Instantiate(GameObject)''
   * ''Invoke(name, time)''
-  * ''GameObject.Find(name).GetComponent<tag>()''
+  * ''GameObject.Find(name)''
+  * ''gameObject.GetComponent<typeOfComponent>()'' gets the first component (script, whatever...) from a GameObject object. There is also ''GetComponents<type>()'' that retrieves a list.  The GameObject must be active.
+  * ''GetComponentInChildren<Type>()'', retrieves from children object.
+  * ''Destroy(gameObject, time)'', will destroy an instatiated prefab on 20secs.
+  * ''Destroy(gameObject)'', destroys the object now.
+  * ''SendMessage'', calls a method on each script which have it inside the GameObject.
+<code csharp>
+// Calls the function ApplyDamage with a value of 5
+gameObject.SendMessage ("ApplyDamage", 5.0);
+...
+// Every script attached to the game object
+// that has an ApplyDamage function will be called.
+function ApplyDamage (damage : float) {...
+</code>
+  * Propiedades:
+    * ''gameObject.active'', to activate or deactivate the gameObject.
 === Input ===
   * ''OnMouseDown()'' function is called when there is a mouse click on a collider.
+  * ''Input.GetButtonDown(str)'', where the string is...
+    * Fire1, control key.
+    * Fire2, left mouse button.
 === Animations ===
@@ Línea 56: / Línea 81: @@
   * ''Debug.Log()'', shows a message in console.
   * ''Debug.Break()'', stops the game.
+=== Camera ===
+The static object ''Camera.main'' contains the main camera for the scene.
+  * ''ViewportToWorldPoint'' and ''WorldToViewportPoint'' to transform coordinates.
 === Useful functions ===
@@ Línea 144: / Línea 173: @@
 if(rb != null && rb.tag == "Enemy") {
   rb.gameObject.GetComponent<Enemy>().HP = 0;
+</code>
+=== Make a gameObject invisible ===
+Disabling its MeshRenderer component...
+<code csharp>
+GetComponent(MeshRenderer).enabled = false;
+</code>
+=== Make blink a gameObject ===
+For a finite amount of time...
+<code csharp>
+StartCoroutine(Blink(2.0));
+function Blink(waitTime : float) {
+    var endTime=Time.time + waitTime;
+    while(Time.time<waitTime){
+        renderer.enabled = false;
+        yield WaitForSeconds(0.2);
+        renderer.enabled = true;
+        yield WaitForSeconds(0.2);
+    }
+}
+</code>
+To make it blink always, immiately, and repeat every 0.4 seconds...
+<code csharp>
+InvokeRepeating("Blink", 0, 0.4);
+function Blink()
+{
+    renderer.enabled = false;
+    yield WaitForSeconds(0.2);
+    renderer.enabled = true;
+}
 </code>
 ==== Notes ====
@@ Línea 164: / Línea 224: @@
 ==== Scripting physics ====
   * ''rigidbody2D.velocity'' returns the velocity vector from one rigidbody2D attached to a GameObject.
+==== Physics functions ====
+  * ''OnCollisionEnter2D(CollisionInfo2D info)'' when another collider is touching this object collider.
+  * ''OnCollisionExit2D(CollisionInfo2D info)'' when another collider is not touching this object collider anymore.
+  * ''OnTriggerEnter2D(Collider2D otherCollider)'' when another collider marked as a "Trigger" is touching this object collider.
+  * ''OnTriggerExit2D(Collider2D otherCollider)'' when another collider marked as a "Trigger" is not touching this object collider anymore.
 ==== Colliders ====
   * When a collider is market as ''Is Trigger'' won't cause physical collisions, however it will call ''OnTriggerEnter2D()'' function.
@@ Línea 201: / Línea 267: @@
 </code>
+=== Move an element ===
+<code csharp>
+float inputX = Input.GetAxis("Horizontal");
+float inputY = Input.GetAxis("Vertical");
+movement = new Vector2(speed.x * inputX, speed.y * inputY);
+</code>
 ===== Other stuff... =====
 ==== Working with mobile phones ====
@@ Línea 208: / Línea 280: @@
   * ''Input.touchCount'' tells the number of touches.
   * ''Input.GetTouch(0)'' obtains the first touch which was done.
+  * Sometimes you'll need to refresh the editor to see the changes, you can do it with ''CTRL+R''.
+  * To focus a gameobject you'll do in the GameObject menu, option Align View to Selected.
 ==== GUI elements ====
@@ Línea 215: / Línea 289: @@
 <code csharp>
 if (GUI.Button()) {
+</code>
+To make a property which won't be shown in the editor:
+<code csharp>
+[HideInInspector]
+public float mAngle = 0f;
+</code>
+To create a option menu you will add a class of the next style:
+<code csharp>
+using UnityEngine;
+using UnityEditor;
+using System.Collections;
+public class FunWindow : EditorWindow
+{
+	[MenuItem("Tools/Fun Window")]
+	public static void ShowWindow()
+	{
+		EditorWindow.GetWindow<FunWindow>("Fun Window");
+	}
+	void OnGUI()
+	{
+		if(GUILayout.Button("Clear PlayerPrefs"))
+		{
+			PreferencesManager.DeleteAll();
+		}
+		if(GUILayout.Button("Clear Store"))
+		{
+			Unibiller.clearTransactions();
+		}
+	}
+}
 </code>
 ==== Coroutines ====

Programming

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