95 lines
3.9 KiB
C#
95 lines
3.9 KiB
C#
using System.Collections.Generic;
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using RimWorld;
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using UnityEngine;
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using Verse;
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namespace WulaFallenEmpire
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{
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public class Projectile_WulaLineAttack : Projectile
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{
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private List<Thing> alreadyDamaged = new List<Thing>();
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private Vector3 lastTickPosition;
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public override void ExposeData()
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{
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base.ExposeData();
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Scribe_Collections.Look(ref alreadyDamaged, "alreadyDamaged", LookMode.Reference);
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Scribe_Values.Look(ref lastTickPosition, "lastTickPosition");
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if (alreadyDamaged == null)
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{
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alreadyDamaged = new List<Thing>();
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}
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}
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public override void Launch(Thing launcher, Vector3 origin, LocalTargetInfo usedTarget, LocalTargetInfo intendedTarget, ProjectileHitFlags hitFlags, bool preventFriendlyFire = false, Thing equipment = null, ThingDef targetCoverDef = null)
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{
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base.Launch(launcher, origin, usedTarget, intendedTarget, hitFlags, preventFriendlyFire, equipment, targetCoverDef);
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this.lastTickPosition = origin;
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this.alreadyDamaged.Clear();
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}
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protected override void Tick()
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{
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Vector3 startPos = this.lastTickPosition;
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base.Tick(); // 这会更新弹丸的位置，并可能调用Impact()
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if (this.Destroyed)
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{
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return;
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}
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Vector3 endPos = this.ExactPosition;
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// 调用路径伤害检测
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DamageMissedPawns(startPos, endPos);
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// 为下一帧更新位置
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this.lastTickPosition = endPos;
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}
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protected override void Impact(Thing hitThing, bool blockedByShield = false)
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{
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// 在最终碰撞前，最后一次检查从上一帧到当前碰撞点的路径
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DamageMissedPawns(this.lastTickPosition, this.ExactPosition);
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// 如果最终目标还没被路径伤害击中，在这里造成一次伤害
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if (hitThing != null && !alreadyDamaged.Contains(hitThing))
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{
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DamageInfo dinfo = new DamageInfo(this.def.projectile.damageDef, (float)this.DamageAmount, this.ArmorPenetration, this.ExactRotation.eulerAngles.y, this.launcher, null, this.equipmentDef, DamageInfo.SourceCategory.ThingOrUnknown, this.intendedTarget.Thing);
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hitThing.TakeDamage(dinfo);
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}
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// 调用基类方法来处理XML中定义的爆炸等最终效果
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base.Impact(hitThing, blockedByShield);
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}
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private void DamageMissedPawns(Vector3 startPos, Vector3 endPos)
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{
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if (startPos == endPos) return;
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Map map = this.Map;
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float distance = Vector3.Distance(startPos, endPos);
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Vector3 direction = (endPos - startPos).normalized;
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for (float i = 0; i < distance; i += 0.5f)
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{
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Vector3 checkPos = startPos + direction * i;
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IntVec3 checkCell = new IntVec3(checkPos);
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if (!checkCell.InBounds(map)) continue;
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var thingsInCell = new HashSet<Thing>(map.thingGrid.ThingsListAt(checkCell));
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foreach (Thing thing in thingsInCell)
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{
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if (thing is Pawn pawn && pawn != this.launcher && !alreadyDamaged.Contains(pawn) && GenHostility.HostileTo(pawn, this.launcher.Faction))
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{
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var dinfo = new DamageInfo(this.def.projectile.damageDef, (float)this.DamageAmount, this.ArmorPenetration, this.ExactRotation.eulerAngles.y, this.launcher, null, this.equipmentDef, DamageInfo.SourceCategory.ThingOrUnknown, this.intendedTarget.Thing);
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pawn.TakeDamage(dinfo);
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alreadyDamaged.Add(pawn);
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}
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}
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}
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}
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}
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} |