56 lines
2.1 KiB
C#
56 lines
2.1 KiB
C#
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using System.Collections.Generic;
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using UnityEngine;
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namespace TKS
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{
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/// <summary>적군 슬링샷 결정: 가장 가까운 아군을 향해 당기고, 정확도에 따라 흔들린다.</summary>
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public static class EnemyAI
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{
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public static Vector2 Decide(Unit e, IReadOnlyList<Unit> targets, float accuracy, System.Random rng, Board board)
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{
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Unit nearest = null;
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float best = float.MaxValue;
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for (int i = 0; i < targets.Count; i++)
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{
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var t = targets[i];
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if (!t.IsAlive) continue;
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float d = Vector2.Distance(e.Position, t.Position);
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if (d < best)
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{
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best = d;
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nearest = t;
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}
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}
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if (nearest == null) return e.Position;
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Vector2 toT = nearest.Position - e.Position;
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float dist = toT.magnitude;
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Vector2 dir = dist > 0.001f ? toT / dist : Vector2.up;
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Vector2 target;
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if (dist <= e.SlingMaxDistance)
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{
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target = nearest.Position; // 최종 목표점 명중 시도
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}
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else
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{
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target = e.Position + dir * e.SlingMaxDistance; // 접근(궁병은 사거리 안이면 이동 후 사격)
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}
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if (rng.NextDouble() > accuracy)
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{
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float ang = ((float)rng.NextDouble() * 2f - 1f) * 22f * Mathf.Deg2Rad;
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float cs = Mathf.Cos(ang);
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float sn = Mathf.Sin(ang);
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Vector2 rd = new Vector2(dir.x * cs - dir.y * sn, dir.x * sn + dir.y * cs);
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float len = (target - e.Position).magnitude * (0.75f + 0.5f * (float)rng.NextDouble());
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target = e.Position + rd * Mathf.Min(len, e.SlingMaxDistance);
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}
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Vector2 v = target - e.Position;
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if (v.magnitude > e.SlingMaxDistance) v = v.normalized * e.SlingMaxDistance;
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return board.ClampInside(e.Position + v, e.Radius);
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}
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}
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}
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