117 lines
3.6 KiB
C#
117 lines
3.6 KiB
C#
using UnityEngine;
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using System.Collections;
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public class blob : MonoBehaviour
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{
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public Rigidbody2D body;
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public CapsuleCollider2D capsuleCollider2D;
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public SpriteRenderer spriteRenderer;
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[SerializeField] private float worldLowerBound = -3f;
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[SerializeField] private float movementSpeed = 0.5f;
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[SerializeField] public LayerMask platformLayerMask;
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[SerializeField] public AudioSource deathSound;
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private bool turnCheck = true;
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private float distance;
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private float lastFlip;
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public bool isDead = false;
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// initializes some variables on start
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void Start()
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{
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body = GetComponent<Rigidbody2D>();
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capsuleCollider2D = GetComponent<CapsuleCollider2D>();
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}
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private void FixedUpdate()
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{
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// removes objects if it gets below world minimal vertical bound
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if (transform.position.y < worldLowerBound)
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{
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Destroy(this.gameObject);
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}
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turnCheck = TurnAround();
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MovementHandler();
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}
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void OnCollisionEnter2D(Collision2D col)
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{
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// handling collision with other enemies
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if (col.gameObject.CompareTag("Enemy"))
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{
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DeathHandler();
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}
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}
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public void DeathHandler()
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{
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StartCoroutine(Death());
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}
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private IEnumerator Death()
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{
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isDead = true;
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deathSound.Play();
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yield return new WaitForSeconds(0.15f);
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Destroy(gameObject);
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}
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private bool TurnAround()
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{
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// creates series of rays checking collision at certain points
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Vector3 boxCastOffset = new Vector3(.075f, 0f, 0f);
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RaycastHit2D boxcastHitBottomLeft = Physics2D.Raycast(capsuleCollider2D.bounds.center + boxCastOffset, Vector2.down, 0.25f, platformLayerMask);
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RaycastHit2D boxcastHitBottomRight = Physics2D.Raycast(capsuleCollider2D.bounds.center - boxCastOffset, Vector2.down, 0.25f, platformLayerMask);
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RaycastHit2D boxcastHitLeft = Physics2D.Raycast(capsuleCollider2D.bounds.center, Vector2.left, 0.125f, platformLayerMask);
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RaycastHit2D boxcastHitRight = Physics2D.Raycast(capsuleCollider2D.bounds.center, Vector2.right, 0.125f, platformLayerMask);
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//Color boxColor;
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if (boxcastHitBottomLeft.collider == null || boxcastHitBottomRight.collider == null || boxcastHitLeft.collider != null || boxcastHitRight.collider != null)
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{
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// fixes bug that multiple hits are detected too quickly by checking distance traveled since last hit
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distance = transform.position.x - lastFlip;
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lastFlip = transform.position.x;
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if (distance > 0.1f || distance < -0.1f)
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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else
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{
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return false;
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}
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}
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private void MovementHandler()
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{
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// inverts movements speed if turn is needed and flip sprite if it's needed & moving
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if (turnCheck == true)
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{
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movementSpeed *= -1;
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if (body.velocity.x > 0)
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{
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spriteRenderer.flipX = true;
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}
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else if (body.velocity.x < 0)
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{
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spriteRenderer.flipX = false;
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}
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}
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// sets new speed forever while vertical speed is close to 0 and horizontal speed is close to normal move speed
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if ((body.velocity.y < 0.5f || body.velocity.y > -0.5f) && body.velocity.x < 0.6f && body.velocity.x > -0.6f)
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{
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body.velocity = new Vector2(movementSpeed, body.velocity.y);
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}
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}
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}
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