97 lines
3.7 KiB
C#
97 lines
3.7 KiB
C#
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using UnityEngine;
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using BehaviorDesigner.Runtime.Tasks;
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using Tooltip = BehaviorDesigner.Runtime.Tasks.TooltipAttribute;
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using HelpURL = BehaviorDesigner.Runtime.Tasks.HelpURLAttribute;
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namespace BehaviorDesigner.Runtime.Tactical.Tasks
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{
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[TaskCategory("Tactical")]
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[TaskDescription("Surrounds the enemy and starts to attack after all agents are in position")]
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[HelpURL("https://www.opsive.com/support/documentation/behavior-designer-tactical-pack/")]
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[TaskIcon("Assets/Behavior Designer Tactical/Editor/Icons/{SkinColor}SurroundIcon.png")]
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public class Surround : NavMeshTacticalGroup
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{
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[Tooltip("The radius of the agents that should surround the target")]
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public SharedFloat radius = 10;
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private float theta;
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private bool inPosition;
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public override void OnStart()
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{
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base.OnStart();
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inPosition = false;
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}
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protected override void AddAgentToGroup(Behavior agent, int index)
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{
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base.AddAgentToGroup(agent, index);
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// 2 * PI = 360 degrees
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theta = 2 * Mathf.PI / agents.Count;
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}
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protected override int RemoveAgentFromGroup(Behavior agent)
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{
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var index = base.RemoveAgentFromGroup(agent);
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// 2 * PI = 360 degrees
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theta = 2 * Mathf.PI / agents.Count;
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return index;
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}
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public override TaskStatus OnUpdate()
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{
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var baseStatus = base.OnUpdate();
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if (baseStatus != TaskStatus.Running || !started) {
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return baseStatus;
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}
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var attackCenter = CenterAttackPosition();
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var attackRotation = CenterAttackRotation(attackCenter);
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var offset = Vector3.zero;
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// Wait until all agents are in position before starting to attack.
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if (canAttack) {
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if (MoveToAttackPosition()) {
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tacticalAgent.TryAttack();
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}
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} else if (!inPosition) {
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offset.Set(radius.Value * Mathf.Sin(theta * formationIndex), 0, radius.Value * Mathf.Cos(theta * formationIndex));
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var destination = TransformPoint(attackCenter, offset, attackRotation);
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var detour = false;
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// Don't go through the center when travelling to the other side of the circle
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if (offset.z < 0 && InverseTransformPoint(attackCenter, transform.position, attackRotation).z < -tacticalAgent.Radius()) {
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offset.Set((radius.Value + tacticalAgent.Radius()) * Mathf.Sign(Mathf.Sin(theta * formationIndex)), 0, 0);
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destination = TransformPoint(attackCenter, offset, attackRotation);
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detour = true;
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}
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tacticalAgent.SetDestination(destination);
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// The agents can't be in position if they are taking a detour.
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if (!detour && tacticalAgent.HasArrived()) {
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FindAttackTarget();
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// The agents are not in position until they are looking at the target.
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if (tacticalAgent.RotateTowardsPosition(tacticalAgent.TargetTransform.position)) {
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// Notify the leader when the agent is in position.
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if (leaderTree != null) {
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leaderTree.SendEvent("UpdateInPosition", formationIndex, true);
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} else {
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UpdateInPosition(0, true);
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}
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inPosition = true;
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}
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}
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}
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return TaskStatus.Running;
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}
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public override void OnReset()
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{
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base.OnReset();
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radius = 10;
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}
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}
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}
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