107 lines
2.6 KiB
C#
107 lines
2.6 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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public class Spawner : MonoBehaviour
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{
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// Reference to the Prefab to Spawn
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[SerializeField] private GameObject objectToSpawn;
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// Time interval between spawns
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public float spawnInterval = 1f;
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[SerializeField] private int maxAlive = 0;
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[SerializeField] private bool spawnOnStart = true;
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[SerializeField] private bool repeatSpawns = true;
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[SerializeField] private float launchForce = 0f;
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[SerializeField] private float launchRandomAngle = 0f;
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[SerializeField] private float spinSpeed = 0f;
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private readonly List<GameObject> spawned = new List<GameObject>();
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private void OnEnable()
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{
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if (spawnOnStart)
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{
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SpawnOnce();
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}
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}
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void Start()
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{
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if (repeatSpawns)
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{
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// Start the spawning process using a Coroutine
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StartCoroutine(SpawnRoutine());
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}
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}
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private void Update()
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{
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if (spinSpeed != 0f)
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{
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transform.Rotate(0f, 0f, spinSpeed * Time.deltaTime);
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}
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}
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public void SpawnNow()
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{
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SpawnOnce();
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}
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private IEnumerator SpawnRoutine()
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{
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// Infinite loop to keep spawning (can be modified)
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while (true)
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{
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// Wait for the specified interval
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yield return new WaitForSeconds(spawnInterval);
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if (objectToSpawn == null)
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{
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continue;
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}
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if (maxAlive > 0 && CountAlive() >= maxAlive)
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{
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continue;
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}
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SpawnOnce();
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}
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}
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private void SpawnOnce()
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{
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if (objectToSpawn == null)
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{
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return;
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}
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if (maxAlive > 0 && CountAlive() >= maxAlive)
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{
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return;
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}
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var instance = Instantiate(objectToSpawn, transform.position, Quaternion.identity);
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spawned.Add(instance);
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if (launchForce > 0f && instance.TryGetComponent<Rigidbody2D>(out var body))
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{
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var angleOffset = launchRandomAngle > 0f ? Random.Range(-launchRandomAngle, launchRandomAngle) : 0f;
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var direction = Quaternion.Euler(0f, 0f, angleOffset) * transform.right;
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body.AddForce(direction.normalized * launchForce, ForceMode2D.Impulse);
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}
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}
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private int CountAlive()
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{
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for (var i = spawned.Count - 1; i >= 0; i--)
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{
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if (spawned[i] == null)
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{
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spawned.RemoveAt(i);
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}
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}
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return spawned.Count;
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}
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}
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