285 lines
10 KiB
C#
285 lines
10 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2020 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, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using OpenRA.Graphics;
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using OpenRA.Mods.Cnc.Activities;
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using OpenRA.Mods.Common.Orders;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Primitives;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Cnc.Traits
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{
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public class MinelayerInfo : TraitInfo, Requires<RearmableInfo>
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{
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[ActorReference]
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public readonly string Mine = "minv";
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public readonly string AmmoPoolName = "primary";
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public readonly WDist MinefieldDepth = new WDist(1536);
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[VoiceReference]
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[Desc("Voice to use when ordered to lay a minefield.")]
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public readonly string Voice = "Action";
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[Desc("Sprite overlay to use for valid minefield cells.")]
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public readonly string TileValidName = "build-valid";
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[Desc("Sprite overlay to use for invalid minefield cells.")]
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public readonly string TileInvalidName = "build-invalid";
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[Desc("Sprite overlay to use for minefield cells hidden behind fog or shroud.")]
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public readonly string TileUnknownName = "build-unknown";
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public override object Create(ActorInitializer init) { return new Minelayer(init.Self, this); }
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}
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public class Minelayer : IIssueOrder, IResolveOrder, ISync, IIssueDeployOrder, IOrderVoice, ITick
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{
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public readonly MinelayerInfo Info;
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public readonly Sprite Tile;
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[Sync]
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CPos minefieldStart;
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public Minelayer(Actor self, MinelayerInfo info)
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{
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Info = info;
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var tileset = self.World.Map.Tileset.ToLowerInvariant();
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if (self.World.Map.Rules.Sequences.HasSequence("overlay", "{0}-{1}".F(Info.TileValidName, tileset)))
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Tile = self.World.Map.Rules.Sequences.GetSequence("overlay", "{0}-{1}".F(Info.TileValidName, tileset)).GetSprite(0);
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else
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Tile = self.World.Map.Rules.Sequences.GetSequence("overlay", Info.TileValidName).GetSprite(0);
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}
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IEnumerable<IOrderTargeter> IIssueOrder.Orders
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{
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get
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{
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yield return new BeginMinefieldOrderTargeter();
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yield return new DeployOrderTargeter("PlaceMine", 5);
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}
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}
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Order IIssueOrder.IssueOrder(Actor self, IOrderTargeter order, Target target, bool queued)
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{
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switch (order.OrderID)
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{
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case "BeginMinefield":
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var start = self.World.Map.CellContaining(target.CenterPosition);
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if (self.World.OrderGenerator is MinefieldOrderGenerator)
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((MinefieldOrderGenerator)self.World.OrderGenerator).AddMinelayer(self, start);
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else
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self.World.OrderGenerator = new MinefieldOrderGenerator(self, start, queued);
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return new Order("BeginMinefield", self, Target.FromCell(self.World, start), queued);
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case "PlaceMine":
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return new Order("PlaceMine", self, Target.FromCell(self.World, self.Location), queued);
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default:
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return null;
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}
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}
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Order IIssueDeployOrder.IssueDeployOrder(Actor self, bool queued)
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{
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return new Order("PlaceMine", self, Target.FromCell(self.World, self.Location), queued);
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}
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bool IIssueDeployOrder.CanIssueDeployOrder(Actor self, bool queued) { return true; }
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void IResolveOrder.ResolveOrder(Actor self, Order order)
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{
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if (order.OrderString != "BeginMinefield" && order.OrderString != "PlaceMinefield" && order.OrderString != "PlaceMine")
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return;
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var cell = self.World.Map.CellContaining(order.Target.CenterPosition);
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if (order.OrderString == "BeginMinefield")
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minefieldStart = cell;
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else if (order.OrderString == "PlaceMine")
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self.QueueActivity(order.Queued, new LayMines(self));
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else if (order.OrderString == "PlaceMinefield")
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{
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var movement = self.Trait<IPositionable>();
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var minefield = GetMinefieldCells(minefieldStart, cell, Info.MinefieldDepth)
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.Where(c => movement.CanEnterCell(c, null, BlockedByActor.Immovable)
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|| (!self.Owner.Shroud.IsVisible(c) && self.World.Map.Contains(c)))
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.OrderBy(c => (c - minefieldStart).LengthSquared).ToList();
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self.QueueActivity(order.Queued, new LayMines(self, minefield));
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self.ShowTargetLines();
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}
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}
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void ITick.Tick(Actor self)
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{
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if (self.CurrentActivity != null)
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foreach (var field in self.CurrentActivity.ActivitiesImplementing<LayMines>())
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field.CleanMineField(self);
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}
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string IOrderVoice.VoicePhraseForOrder(Actor self, Order order)
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{
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if (order.OrderString == "PlaceMine" || order.OrderString == "PlaceMinefield")
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return Info.Voice;
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return null;
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}
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static IEnumerable<CPos> GetMinefieldCells(CPos start, CPos end, WDist depth)
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{
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var mins = new CPos(Math.Min(start.X, end.X), Math.Min(start.Y, end.Y));
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var maxs = new CPos(Math.Max(start.X, end.X), Math.Max(start.Y, end.Y));
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// TODO: proper endcaps, if anyone cares (which won't happen unless depth is large)
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var p = end - start;
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var q = new float2(p.Y, -p.X);
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q = (start != end) ? (1 / q.Length) * q : new float2(1, 0);
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var c = -float2.Dot(q, new float2(start.X, start.Y));
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// return all points such that |ax + by + c| < depth
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// HACK: This will return the wrong results for isometric cells
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for (var i = mins.X; i <= maxs.X; i++)
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for (var j = mins.Y; j <= maxs.Y; j++)
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if (Math.Abs(q.X * i + q.Y * j + c) * 1024 < depth.Length)
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yield return new CPos(i, j);
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}
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class MinefieldOrderGenerator : OrderGenerator
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{
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readonly List<Actor> minelayers;
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readonly Sprite tileOk;
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readonly Sprite tileUnknown;
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readonly Sprite tileBlocked;
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readonly CPos minefieldStart;
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readonly bool queued;
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public MinefieldOrderGenerator(Actor a, CPos xy, bool queued)
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{
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minelayers = new List<Actor>() { a };
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minefieldStart = xy;
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this.queued = queued;
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var minelayer = a.Trait<Minelayer>();
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var tileset = a.World.Map.Tileset.ToLowerInvariant();
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if (a.World.Map.Rules.Sequences.HasSequence("overlay", "{0}-{1}".F(minelayer.Info.TileValidName, tileset)))
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tileOk = a.World.Map.Rules.Sequences.GetSequence("overlay", "{0}-{1}".F(minelayer.Info.TileValidName, tileset)).GetSprite(0);
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else
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tileOk = a.World.Map.Rules.Sequences.GetSequence("overlay", minelayer.Info.TileValidName).GetSprite(0);
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if (a.World.Map.Rules.Sequences.HasSequence("overlay", "{0}-{1}".F(minelayer.Info.TileUnknownName, tileset)))
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tileUnknown = a.World.Map.Rules.Sequences.GetSequence("overlay", "{0}-{1}".F(minelayer.Info.TileUnknownName, tileset)).GetSprite(0);
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else
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tileUnknown = a.World.Map.Rules.Sequences.GetSequence("overlay", minelayer.Info.TileUnknownName).GetSprite(0);
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if (a.World.Map.Rules.Sequences.HasSequence("overlay", "{0}-{1}".F(minelayer.Info.TileInvalidName, tileset)))
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tileBlocked = a.World.Map.Rules.Sequences.GetSequence("overlay", "{0}-{1}".F(minelayer.Info.TileInvalidName, tileset)).GetSprite(0);
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else
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tileBlocked = a.World.Map.Rules.Sequences.GetSequence("overlay", minelayer.Info.TileInvalidName).GetSprite(0);
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}
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public void AddMinelayer(Actor a, CPos xy)
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{
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minelayers.Add(a);
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}
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protected override IEnumerable<Order> OrderInner(World world, CPos cell, int2 worldPixel, MouseInput mi)
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{
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if (mi.Button == Game.Settings.Game.MouseButtonPreference.Cancel)
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{
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world.CancelInputMode();
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yield break;
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}
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if (mi.Button == Game.Settings.Game.MouseButtonPreference.Action)
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{
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minelayers.First().World.CancelInputMode();
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foreach (var minelayer in minelayers)
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yield return new Order("PlaceMinefield", minelayer, Target.FromCell(world, cell), queued);
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}
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}
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protected override void Tick(World world)
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{
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minelayers.RemoveAll(minelayer => !minelayer.IsInWorld || minelayer.IsDead);
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if (!minelayers.Any())
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world.CancelInputMode();
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}
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protected override IEnumerable<IRenderable> Render(WorldRenderer wr, World world) { yield break; }
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protected override IEnumerable<IRenderable> RenderAboveShroud(WorldRenderer wr, World world)
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{
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var minelayer = minelayers.FirstOrDefault(m => m.IsInWorld && !m.IsDead);
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if (minelayer == null)
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yield break;
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// We get the biggest depth so we cover all cells that mines could be placed on.
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var lastMousePos = wr.Viewport.ViewToWorld(Viewport.LastMousePos);
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var minefield = GetMinefieldCells(minefieldStart, lastMousePos,
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minelayers.Max(m => m.Info.TraitInfo<MinelayerInfo>().MinefieldDepth));
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var movement = minelayer.Trait<IPositionable>();
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var mobile = movement as Mobile;
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var pal = wr.Palette(TileSet.TerrainPaletteInternalName);
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foreach (var c in minefield)
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{
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var tile = tileOk;
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if (!world.Map.Contains(c))
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tile = tileBlocked;
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else if (world.FogObscures(c))
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tile = tileUnknown;
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else if (!movement.CanEnterCell(c, null, BlockedByActor.Immovable) || (mobile != null && !mobile.CanStayInCell(c)))
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tile = tileBlocked;
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yield return new SpriteRenderable(tile, world.Map.CenterOfCell(c),
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WVec.Zero, -511, pal, 1f, true);
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}
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}
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protected override IEnumerable<IRenderable> RenderAnnotations(WorldRenderer wr, World world) { yield break; }
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protected override string GetCursor(World world, CPos cell, int2 worldPixel, MouseInput mi)
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{
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return "ability";
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}
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}
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class BeginMinefieldOrderTargeter : IOrderTargeter
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{
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public string OrderID { get { return "BeginMinefield"; } }
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public int OrderPriority { get { return 5; } }
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public bool TargetOverridesSelection(Actor self, Target target, List<Actor> actorsAt, CPos xy, TargetModifiers modifiers) { return true; }
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public bool CanTarget(Actor self, Target target, List<Actor> othersAtTarget, ref TargetModifiers modifiers, ref string cursor)
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{
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if (target.Type != TargetType.Terrain)
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return false;
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var location = self.World.Map.CellContaining(target.CenterPosition);
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if (!self.World.Map.Contains(location))
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return false;
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cursor = "ability";
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IsQueued = modifiers.HasModifier(TargetModifiers.ForceQueue);
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return modifiers.HasModifier(TargetModifiers.ForceAttack);
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}
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public bool IsQueued { get; protected set; }
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}
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}
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}
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