301 lines
8.5 KiB
C#
301 lines
8.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System.Collections.Generic;
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using System.Linq;
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using OpenRA.Effects;
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using OpenRA.FileFormats;
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using OpenRA.Graphics;
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using OpenRA.Traits;
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namespace OpenRA.Mods.RA
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{
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class BridgeInfo : ITraitInfo, Requires<HealthInfo>
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{
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public readonly bool Long = false;
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[Desc("Delay (in ticks) between repairing adjacent spans in long bridges")]
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public readonly int RepairPropagationDelay = 20;
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public readonly ushort Template = 0;
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public readonly ushort DamagedTemplate = 0;
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public readonly ushort DestroyedTemplate = 0;
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// For long bridges
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public readonly ushort DestroyedPlusNorthTemplate = 0;
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public readonly ushort DestroyedPlusSouthTemplate = 0;
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public readonly ushort DestroyedPlusBothTemplate = 0;
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public readonly string[] ShorePieces = {"br1", "br2"};
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public readonly int[] NorthOffset = null;
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public readonly int[] SouthOffset = null;
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public object Create(ActorInitializer init) { return new Bridge(init.self, this); }
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public IEnumerable<Pair<ushort, float>> Templates
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{
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get
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{
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if (Template != 0)
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yield return Pair.New(Template, 1f);
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if (DamagedTemplate != 0)
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yield return Pair.New(DamagedTemplate, .5f);
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if (DestroyedTemplate != 0)
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yield return Pair.New(DestroyedTemplate, 0f);
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if (DestroyedPlusNorthTemplate != 0)
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yield return Pair.New(DestroyedPlusNorthTemplate, 0f);
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if (DestroyedPlusSouthTemplate != 0)
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yield return Pair.New(DestroyedPlusSouthTemplate, 0f);
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if (DestroyedPlusBothTemplate != 0)
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yield return Pair.New(DestroyedPlusBothTemplate, 0f);
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}
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}
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}
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class Bridge: IRender, INotifyDamageStateChanged
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{
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ushort template;
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Dictionary<CPos, byte> footprint;
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Actor self;
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BridgeInfo Info;
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public string Type;
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Bridge northNeighbour, southNeighbour;
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Health Health;
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public Bridge(Actor self, BridgeInfo info)
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{
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this.self = self;
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Health = self.Trait<Health>();
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Health.RemoveOnDeath = false;
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this.Info = info;
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this.Type = self.Info.Name;
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}
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public void Create(ushort template, Dictionary<CPos, byte> footprint)
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{
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this.template = template;
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this.footprint = footprint;
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// Set the initial custom terrain types
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foreach (var c in footprint.Keys)
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self.World.Map.CustomTerrain[c.X, c.Y] = GetTerrainType(c);
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}
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string GetTerrainType(CPos cell)
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{
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var dx = cell - self.Location;
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var index = dx.X + self.World.TileSet.Templates[template].Size.X * dx.Y;
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return self.World.TileSet.GetTerrainType(new TileReference<ushort, byte>(template, (byte)index));
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}
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public void LinkNeighbouringBridges(World world, BridgeLayer bridges)
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{
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// go looking for our neighbors if this is a long bridge.
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if (Info.NorthOffset != null)
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northNeighbour = GetNeighbor(Info.NorthOffset, bridges);
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if (Info.SouthOffset != null)
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southNeighbour = GetNeighbor(Info.SouthOffset, bridges);
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}
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public Bridge GetNeighbor(int[] offset, BridgeLayer bridges)
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{
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if (offset == null)
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return null;
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return bridges.GetBridge(self.Location + new CVec(offset[0], offset[1]));
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}
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IRenderable[] TemplateRenderables(WorldRenderer wr, PaletteReference palette, ushort template)
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{
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return footprint.Select(c => (IRenderable)(new SpriteRenderable(
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wr.Theater.TileSprite(new TileReference<ushort, byte>(template, c.Value)),
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c.Key.CenterPosition, WVec.Zero, -512, palette, 1f, true))).ToArray();
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}
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bool initialized;
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Dictionary<ushort, IRenderable[]> renderables;
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public IEnumerable<IRenderable> Render(Actor self, WorldRenderer wr)
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{
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if (!initialized)
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{
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var palette = wr.Palette("terrain");
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renderables = new Dictionary<ushort, IRenderable[]>();
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foreach (var t in Info.Templates)
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renderables.Add(t.First, TemplateRenderables(wr, palette, t.First));
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initialized = true;
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}
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return renderables[template];
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}
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void KillUnitsOnBridge()
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{
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foreach (var c in footprint.Keys)
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foreach (var a in self.World.ActorMap.GetUnitsAt(c))
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if (a.HasTrait<IPositionable>() && !a.Trait<IPositionable>().CanEnterCell(c))
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a.Kill(self);
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}
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bool NeighbourIsDeadShore(Bridge neighbour)
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{
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return neighbour != null && Info.ShorePieces.Contains(neighbour.Type) && neighbour.Health.IsDead;
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}
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bool LongBridgeSegmentIsDead()
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{
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// The long bridge artwork requires a hack to display correctly
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// if the adjacent shore piece is dead
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if (!Info.Long)
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return Health.IsDead;
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if (NeighbourIsDeadShore(northNeighbour))
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return true;
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if (NeighbourIsDeadShore(southNeighbour))
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return true;
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return Health.IsDead;
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}
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ushort ChooseTemplate()
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{
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if (Info.Long && LongBridgeSegmentIsDead())
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{
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// Long bridges have custom art for multiple segments being destroyed
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var northIsDead = northNeighbour != null && northNeighbour.LongBridgeSegmentIsDead();
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var southIsDead = southNeighbour != null && southNeighbour.LongBridgeSegmentIsDead();
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if (northIsDead && southIsDead)
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return Info.DestroyedPlusBothTemplate;
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if (northIsDead)
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return Info.DestroyedPlusNorthTemplate;
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if (southIsDead)
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return Info.DestroyedPlusSouthTemplate;
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return Info.DestroyedTemplate;
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}
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var ds = Health.DamageState;
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return (ds == DamageState.Dead && Info.DestroyedTemplate > 0) ? Info.DestroyedTemplate :
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(ds >= DamageState.Heavy && Info.DamagedTemplate > 0) ? Info.DamagedTemplate : Info.Template;
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}
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bool killedUnits = false;
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void UpdateState()
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{
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var oldTemplate = template;
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template = ChooseTemplate();
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if (template == oldTemplate)
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return;
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// Update map
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foreach (var c in footprint.Keys)
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self.World.Map.CustomTerrain[c.X, c.Y] = GetTerrainType(c);
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// If this bridge repair operation connects two pathfinding domains,
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// update the domain index.
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var domainIndex = self.World.WorldActor.TraitOrDefault<DomainIndex>();
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if (domainIndex != null)
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domainIndex.UpdateCells(self.World, footprint.Keys);
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if (LongBridgeSegmentIsDead() && !killedUnits)
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{
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killedUnits = true;
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KillUnitsOnBridge();
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}
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}
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public void Repair(Actor repairer, bool continueNorth, bool continueSouth)
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{
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// Repair self
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var initialDamage = Health.DamageState;
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self.World.AddFrameEndTask(w =>
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{
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if (Health.IsDead)
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{
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Health.Resurrect(self, repairer);
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killedUnits = false;
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KillUnitsOnBridge();
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}
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else
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Health.InflictDamage(self, repairer, -Health.MaxHP, null, true);
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});
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// Repair adjacent spans (long bridges)
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if (continueNorth && northNeighbour != null)
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{
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var delay = initialDamage == DamageState.Undamaged || NeighbourIsDeadShore(northNeighbour) ?
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0 : Info.RepairPropagationDelay;
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self.World.AddFrameEndTask(w => w.Add(new DelayedAction(delay, () =>
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northNeighbour.Repair(repairer, true, false))));
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}
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if (continueSouth && southNeighbour != null)
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{
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var delay = initialDamage == DamageState.Undamaged || NeighbourIsDeadShore(southNeighbour) ?
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0 : Info.RepairPropagationDelay;
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self.World.AddFrameEndTask(w => w.Add(new DelayedAction(delay, () =>
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southNeighbour.Repair(repairer, false, true))));
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}
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}
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public void DamageStateChanged(Actor self, AttackInfo e)
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{
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UpdateState();
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if (northNeighbour != null)
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northNeighbour.UpdateState();
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if (southNeighbour != null)
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southNeighbour.UpdateState();
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// Need to update the neighbours neighbour to correctly
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// display the broken shore hack
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if (Info.ShorePieces.Contains(Type))
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{
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if (northNeighbour != null && northNeighbour.northNeighbour != null)
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northNeighbour.northNeighbour.UpdateState();
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if (southNeighbour != null && southNeighbour.southNeighbour != null)
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southNeighbour.southNeighbour.UpdateState();
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}
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}
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public DamageState AggregateDamageState()
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{
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// Find the worst span damage in the entire bridge
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var br = this;
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while (br.northNeighbour != null)
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br = br.northNeighbour;
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var damage = Health.DamageState;
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for (var b = br; b != null; b = b.southNeighbour)
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if (b.Health.DamageState > damage)
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damage = b.Health.DamageState;
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return damage;
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}
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public void Demolish(Actor saboteur)
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{
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// TODO: completely destroy long bridges in a chain reaction
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Combat.DoExplosion(saboteur, "Demolish", self.CenterPosition);
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self.World.WorldActor.Trait<ScreenShaker>().AddEffect(15, self.CenterPosition, 6);
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self.Kill(saboteur);
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}
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}
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}
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