74 lines
2.6 KiB
C#
74 lines
2.6 KiB
C#
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using CultMath;
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using CultMath.UnityBridge;
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using UnityEngine;
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using static CultMath.math;
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using Random = UnityEngine.Random;
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// How one laid mine looks. Zone owns the mine's every fact (position, arming, trigger, end); this reads them and
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// draws, and writes nothing back. The pose is the latest sim body, spun for show; the pulse runs in real time
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// (rulings unity-presents-only-r3 and sim-speed-presentation).
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public class MineInstance : MonoBehaviour
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{
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public MeshRenderer MeshRenderer;
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public int EmissionSubmesh = 2;
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public AnimationCurve EmissionCurve;
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public float ActiveCycleDuration = 1f;
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public float ArmedCycleDuration = .25f;
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public float ActiveEmission = 100f;
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public float ArmedEmission = 1000f;
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public float RotationSpeed = 1f;
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public float GridOffset;
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// The blast's particles; the effect prefab destroys itself when its particle system stops.
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public GameObject HitEffect;
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public float HitEffectScale = 10f;
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private Zone _zone;
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private Mine _mine;
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private Material _material;
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private float _timeOffset;
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private float _pulse;
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private float _emission;
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public void Bind(Zone zone, Mine mine)
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{
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_zone = zone;
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_mine = mine;
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_material = MeshRenderer.materials[EmissionSubmesh];
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_timeOffset = Random.value * 100;
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Place();
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}
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private void Update()
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{
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Place();
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transform.localRotation = Quaternion.Euler(
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sin(Time.time - _timeOffset * RotationSpeed) * 90, 0, cos(Time.time - _timeOffset * RotationSpeed) * 90);
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// None before the mine arms, then slow while it waits and fast once its fuse is lit.
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var armed = _mine.Armed(_zone.Time);
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var counting = _mine.TriggeredAt != null;
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var target = !armed ? 0f : counting ? ArmedEmission : ActiveEmission;
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_emission = lerp(_emission, target, Time.deltaTime * 10);
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_pulse = (_pulse + Time.deltaTime / (counting ? ArmedCycleDuration : ActiveCycleDuration)) % 1;
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_material.SetFloat("_Emission", _emission * EmissionCurve.Evaluate(_pulse));
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}
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private void Place()
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{
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var p = _mine.Body.Position;
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transform.position = new Vector3(p.x, _zone.GetHeight(p) + GridOffset, p.y);
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}
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// The mine left Zone.Mines, which only its blast does: show it where it was drawn last.
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public void Blast()
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{
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var effect = Instantiate(HitEffect, transform.position, Quaternion.identity);
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effect.transform.localScale = Vector3.one * HitEffectScale;
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Destroy(gameObject);
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}
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private void OnDestroy()
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{
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if (_material) Destroy(_material);
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}
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}
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