SHADE_Y3/Assets/Scripts/AIBehaviour/Implemented/Homeowner1.cs

132 lines
4.3 KiB
C#

/*********************************************************************
* \file Homeowner1.cs
* \author Ryan Wang Nian Jing
* \brief The implemented behaviour tree for the homeowner
* A prototype to prove that behaviour trees can be worked and expanded
* on in the custom engine for GAM300 Milestone 3 and expanded over
* GAM350
*
*
* \copyright Copyright (c) 2022 DigiPen Institute of Technology. Reproduction
or disclosure of this file or its contents without the prior written
consent of DigiPen Institute of Technology is prohibited.
*********************************************************************/
using SHADE;
using SHADE_Scripting.AIBehaviour.BehaviourTree;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
//Variables required for the AI to function
//To be attached to the game object via the inspector
public partial class Homeowner1 : BehaviourTree
{
private BehaviourTreeEvents _events { get; set; }
public override BehaviourTreeEvents events { get => _events; }
//PATROL FIELDS///////////////////////////////////////////////////////////////
[SerializeField]
[Tooltip("The list of waypoints for the AI to cycle around")]
private GameObject waypointsPool;
private List<GameObject> waypoints;
[SerializeField]
[Tooltip("The AI will patrol at this speed")]
private float patrolSpeed;
[SerializeField]
[Tooltip("The speed at which the AI will chase the player if sighted")]
private float chaseSpeed;
[SerializeField]
[Tooltip("Turning speed multiplier of the AI. 10 is good")]
private float turningSpeed;
//FIELD OF VISION/////////////////////////////////////////////////////////////
[SerializeField]
[Tooltip("How far the AI can see up to")]
private float sightDistance;
[SerializeField]
[Tooltip("How far the eyes are offset from the AI's actual position")]
private Vector3 eyeOffset;
//ATTACKING///////////////////////////////////////////////////////////////////
[SerializeField]
[Tooltip("How near the player mut be to the AI for capture")]
private float distanceToCapture;
[SerializeField]
[Tooltip("How long the player should be in the attack range for successful capture")]
private float captureTime;
//There's definitely a better way to do this
[SerializeField]
[Tooltip("TO BE REMOVED IN 350. Interval multiplier between footsteps")]
private float footstepSFXIntervalMultiplier;
private float footstepTimeRemaining;
}
//AI tree
public partial class Homeowner1 : BehaviourTree
{
//Called at the start
protected override void Initialise()
{
_events = new Homeowner1Events(this);
events.Initialise();
//Initialise the waypoints here
if (waypointsPool)
{
waypoints = (List<GameObject>)waypointsPool.GetChildren();
SetData("waypoints", waypoints);
}
}
//Called every tick
protected override void Tick()
{
events.Tick();
//Footsteps SFX, move them somewhere else soon
float velocity = GetComponent<RigidBody>().LinearVelocity.GetMagnitude();
footstepTimeRemaining -= velocity * Time.DeltaTimeF;
if (footstepTimeRemaining < 0.0f)
{
Debug.Log("AI Play Footstep SFX");
footstepTimeRemaining = footstepSFXIntervalMultiplier;
}
}
//Define the behaviour tree here
//Order of which nodes are created affects order of execution
//The tree is called from the root every tick
protected override BehaviourTreeNode CreateTree()
{
//Start from the root, structure it like this to make it look like a tree
BehaviourTreeNode root = new BehaviourTreeSelector("Root", new List<BehaviourTreeNode>
{
new BehaviourTreeSequence("Alerted", new List<BehaviourTreeNode>
{
new LeafSearch("SearchFOV", GetComponent<Transform>(), eyeOffset, sightDistance),
new BehaviourTreeSequence("CatchPlayer", new List<BehaviourTreeNode>
{
new LeafChase("Chasing", GetComponent<Transform>(), GetComponent<RigidBody>(), chaseSpeed, turningSpeed, distanceToCapture, captureTime),
new LeafAttack("Attacking", GameObject.Find("Player").GetValueOrDefault())
})
}),
new LeafPatrol("Patrol", GetComponent<Transform>(), patrolSpeed, turningSpeed, GetComponent<RigidBody>())
});
return root;
}
}