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gravity-fusion/Assets/Components/Merger.cs
2019-10-06 19:04:47 +02:00

77 lines
2.1 KiB
C#

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
[RequireComponent(typeof(CircleCollider2D))]
public class Merger : MonoBehaviour
{
[HideInInspector]
public Particle particle;
public float mergeAfterSeconds;
protected bool mergeEnabled;
protected List<Merger> mergeCandidates;
protected Collider2D Collider {
get {
return particle.mergeCollider;
}
}
protected int ParticlesToMerge {
get {
return particle.gameController.particlesToMerge;
}
}
protected void Awake() {
particle = GetComponentInParent<Particle>();
mergeCandidates = new List<Merger>();
}
protected void Start() {
mergeEnabled = false;
Invoke("EnableMerge", mergeAfterSeconds);
}
protected void EnableMerge() {
mergeEnabled = true;
if(CanMerge()) DoMerge();
}
protected void OnTriggerEnter2D(Collider2D other) {
Merger otherMerger = other.GetComponent<Merger>();
if(otherMerger == null) return;
Particle otherParticle = otherMerger.particle;
if(this.particle.Tier != otherParticle.Tier) return;
mergeCandidates.Add(otherMerger);
if(CanMerge()) DoMerge();
}
protected void OnTriggerExit2D(Collider2D other) {
Merger otherMerger = other.GetComponent<Merger>();
if(otherMerger == null) return;
mergeCandidates.Remove(otherMerger);
}
protected bool CanMerge() {
int mergeableCount = 0;
foreach(Merger mergeCandidate in mergeCandidates) {
if(mergeCandidate.mergeEnabled) mergeableCount += 1;
}
return mergeEnabled && mergeableCount >= ParticlesToMerge;
}
protected void DoMerge() {
particle.Tier += 1;
foreach(Merger merged in mergeCandidates.ToArray()) {
if(merged == null) continue;
Destroy(merged.particle.gameObject);
}
mergeCandidates.Clear();
particle.mergeCollider.enabled = false;
particle.mergeCollider.enabled = true;
}
}