SHADE_Y3/Assets/Scripts/Gameplay/AIBehaviour/AIRework/AILineOfSight.cs

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C#
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2023-03-24 13:26:18 +08:00
using SHADE;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SHADE_Scripting.Gameplay.AIBehaviour.AIRework
{
public class AILineOfSight:Script
{
public GameObject player;
public float range = 2.0f;
[Tooltip("Angle between player and forward to be within sight")]
public float angle = 30.0f;
[Tooltip("For debug")]
public float angleBetween = 0.0f;
[Tooltip("For debug")]
public float distance = 0.0f;
public float heightLimit = 1.0f;
public Vector3 rayOffset;
public bool withinRange;
public bool withinSight;
public Vector3 lastFoundPos;
public float lastFoundTimer = 0.0f;
protected override void update()
{
if (player == GameObject.Null)
return;
Transform transform = GetComponent<Transform>();
Transform playerTransform = player.GetComponent<Transform>();
Collider playerCollider = player.GetComponent<Collider>();
withinRange = false;
withinSight = false;
if(transform && playerTransform && playerCollider)
{
Vector3 pos = transform.GlobalPosition + rayOffset;
Vector3 playerPos = playerTransform.GlobalPosition ;
Vector3 d = playerPos - pos;
distance = d.GetMagnitude();
if(distance < range)
{
Vector3 fwdHorizontal = transform.Forward;
fwdHorizontal.y = 0;
fwdHorizontal.Normalise();
Vector3 dHorizontal = d;
dHorizontal.y = 0;
float dot = Vector3.Dot(fwdHorizontal, dHorizontal);
angleBetween = SHADE.Math.Rad2Deg * MathF.Acos(dot / (dHorizontal.GetMagnitude()));
if (angleBetween < angle && playerPos.y < pos.y + heightLimit)
{
withinRange = true;
withinSight = true;
Ray sightRay = new Ray(pos, d.GetNormalised());
List<RaycastHit> hitResults = Physics.Raycast(sightRay, distance,false, (ushort)65535);
foreach(RaycastHit hit in hitResults)
{
if (hit.Hit && hit.Other != player)
{
Debug.Log("AI LOS: HIT OTHER");
withinSight = false;
break;
}
}
}
}
if (withinSight == true)
{
lastFoundPos = playerTransform.GlobalPosition;
lastFoundTimer = 0.0f;
}
else
{
lastFoundTimer += Time.DeltaTimeF;
}
}
}
}
}