78 lines
2.9 KiB
C#
78 lines
2.9 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Linq;
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using Unity.Mathematics;
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using static Unity.Mathematics.math;
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using UnityEngine;
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public class ShieldManager : MonoBehaviour
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{
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public Prototype ShieldPrototype;
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public float CollisionHitDuration = 3;
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public Entity Entity { get; set; }
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private void OnCollisionEnter(Collision other)
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{
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var otherShield = other.collider.GetComponent<ShieldManager>();
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if (!otherShield)
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{
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var gridObject = other.collider.GetComponent<GridObject>();
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if (gridObject)
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{
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var itemPickup = other.collider.GetComponent<ItemPickup>();
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var mine = other.collider.GetComponent<Mine>();
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if (itemPickup)
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{
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if (Entity.CargoBays.Any(c => c.TryStore(itemPickup.Item)))
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{
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// TODO: Pickup notification!
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Destroy(itemPickup.gameObject);
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}
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else
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{
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// TODO: Pickup failed notification!
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var cp = other.GetContact(0);
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gridObject.Velocity += cp.normal * 25;
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Debug.Log("Attempted item pickup, but no space in cargo bay!");
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}
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}
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else if (mine)
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{
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mine.Explode();
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}
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else
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{
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Debug.Log("Shield collision occurred with grid object, but other collider isn't a mine or an item pickup!");
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}
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}
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else
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Debug.Log("Shield collision occurred, but other collider isn't a shield or a grid object!");
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return;
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}
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var contact = other.GetContact(0);
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var normal = normalize(float2(contact.normal.x, contact.normal.z));
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var tangent = normal.Rotate(ItemRotation.CounterClockwise);
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var v1n = dot(normal, Entity.Velocity);
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var v1t = dot(tangent, Entity.Velocity);
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var v2n = dot(normal, otherShield.Entity.Velocity);
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//var v2t = dot(tangent, otherShield.Entity.Velocity);
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var v1np = PostCollisionVelocity(v1n, Entity.Mass, v2n, otherShield.Entity.Mass);
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Entity.Velocity = tangent * v1t + normal * v1np;
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if(Entity.Shield != null && Entity.Shield.Item.Active.Value) ShowHit(contact.point, CollisionHitDuration);
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}
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private float PostCollisionVelocity(float v1, float m1, float v2, float m2)
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{
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return (v1 * (m1 - m2) + m2 * v2) / (m1 + m2);
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}
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public void ShowHit(Vector3 point, float duration)
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{
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var shield = ShieldPrototype.Instantiate<ShieldAnimation>();
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shield.Direction = normalize(shield.transform.InverseTransformPoint(point));
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shield.Duration = duration;
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}
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}
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