UnityProjekt/Assets/Tiling.cs

84 lines
No EOL
2.8 KiB
C#

using UnityEngine;
public class Tiling : MonoBehaviour
{
private const int LEFT = -1;
private const int RIGHT = 1;
public int offsetX = 2; // the offset so that we don't get any weird errors
// these are used for checking if we need to instantiate stuff
public bool hasARightBuddy;
public bool hasALeftBuddy;
public bool reverseScale; // used if the object is not tilable
private float spriteWidth; // the width of our element
private Camera cam;
private Transform myTransform;
void Awake () {
cam = Camera.main;
myTransform = transform;
}
// Start is called before the first frame update
void Start()
{
SpriteRenderer sRenderer = GetComponent<SpriteRenderer>();
spriteWidth = sRenderer.sprite.bounds.size.x;
}
// Update is called once per frame
void Update()
{
// does it still need buddies? If not do nothing
if (!hasALeftBuddy || !hasARightBuddy) {
// calculate the cameras extend (half the width) of what the camera can see in world coordinates
float camHorizontalExtend = cam.orthographicSize * Screen.width/Screen.height;
// calculate the x position where the camera can see the edge of the sprite (element)
var position = myTransform.position;
float edgeVisiblePositionRight = (position.x + spriteWidth/2) - camHorizontalExtend;
float edgeVisiblePositionLeft = (position.x - spriteWidth/2) + camHorizontalExtend;
// checking if we can see the edge of the element and then calling MakeNewBuddy if we can
if (cam.transform.position.x >= edgeVisiblePositionRight - offsetX && !hasARightBuddy)
{
MakeNewBuddy (RIGHT);
hasARightBuddy = true;
}
else if (cam.transform.position.x <= edgeVisiblePositionLeft + offsetX && !hasALeftBuddy)
{
MakeNewBuddy (LEFT);
hasALeftBuddy = true;
}
}
}
// a function that creates a buddy on the side required
void MakeNewBuddy (int rightOrLeft) {
// calculating the new position for our new buddy
var position = myTransform.position;
Vector3 newPosition = new Vector3 (position.x + spriteWidth * rightOrLeft,
position.y, position.z);
// instantating our new body and storing him in a variable
Transform newBuddy = Instantiate (myTransform, newPosition, myTransform.rotation);
// if not tilable let's reverse the x size og our object to get rid of ugly seams
if (reverseScale)
{
var localScale = newBuddy.localScale;
localScale = new Vector3 (localScale.x*-1, localScale.y, localScale.z);
newBuddy.localScale = localScale;
}
newBuddy.parent = myTransform.parent;
if (rightOrLeft > 0) {
newBuddy.GetComponent<Tiling>().hasALeftBuddy = true;
}
else {
newBuddy.GetComponent<Tiling>().hasARightBuddy = true;
}
}
}