58 lines
2.6 KiB
C#
58 lines
2.6 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.Formations.Tasks
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{
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[TaskCategory("Formations")]
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[TaskDescription("Arrange the group in an upside down V shape where the leader is in the front.")]
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[TaskIcon("Assets/Behavior Designer Formations/Editor/Icons/{SkinColor}WedgeIcon.png")]
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[HelpURL("https://www.opsive.com/support/documentation/behavior-designer-formations-pack/")]
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public class Wedge : NavMeshFormationGroup
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{
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[Tooltip("The separation between agents")]
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public SharedVector2 separation = new Vector2(2, 2);
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[Tooltip("Should agents fill the wedge?")]
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public SharedBool fill;
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private int currentRow = 1;
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private int currentAgentsPerRow = 0;
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private int lastIndex;
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protected override Vector3 TargetPosition(int index, float zLookAhead)
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{
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var leaderTransform = leader.Value == null ? transform : leader.Value.transform;
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if (fill.Value) {
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// The wedge can optionally be filled in. I don't know of a nice formula which computes which row the agent should be in relative to its index so use the number of agents
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// already placed to determine the next position. If anybody knows of an easy formula to compute a filled in wedge please send an email to support@opsive.com.
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if (index <= lastIndex) {
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currentRow = 1;
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currentAgentsPerRow = 0;
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}
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lastIndex = index;
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var targetPosition = leaderTransform.TransformPoint(Mathf.Lerp(-currentRow * separation.Value.x, currentRow * separation.Value.x, currentAgentsPerRow / (float)currentRow), 0, -separation.Value.y * currentRow + zLookAhead);
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currentAgentsPerRow++;
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if (currentAgentsPerRow > currentRow) {
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currentAgentsPerRow = 0;
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currentRow++;
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}
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return targetPosition;
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} else {
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// The wedge is not filled in so the math is much easier.
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return leaderTransform.TransformPoint(separation.Value.x * (index % 2 == 0 ? -1 : 1) * (((index - 1) / 2) + 1), 0, -separation.Value.y * (((index - 1) / 2) + 1) + zLookAhead);
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}
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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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separation = new Vector2(2, 2);
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fill = false;
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}
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}
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}
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