62 lines
1.9 KiB
C#
62 lines
1.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace OpenRa.Game.GameRules
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{
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static class Footprint
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{
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public static IEnumerable<int2> Tiles( BuildingInfo buildingInfo, int2 position )
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{
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return Tiles(buildingInfo, position, true);
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}
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public static IEnumerable<int2> Tiles( BuildingInfo buildingInfo, int2 position, bool adjustForPlacement )
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{
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var dim = buildingInfo.Dimensions;
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var footprint = buildingInfo.Footprint.Where(x => !char.IsWhiteSpace(x));
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if (buildingInfo.Bib)
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{
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dim.Y += 1;
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footprint = footprint.Concat(new char[dim.X]);
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}
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var adjustment = adjustForPlacement ? AdjustForBuildingSize(buildingInfo) : int2.Zero;
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var tiles = TilesWhere(buildingInfo.Name, dim, footprint.ToArray(), a => a != '_');
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return tiles.Select(t => t + position - adjustment);
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}
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public static IEnumerable<int2> Tiles(Actor a, Traits.Building building)
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{
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return Tiles( building.unitInfo, a.Location, false );
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}
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public static IEnumerable<int2> UnpathableTiles( BuildingInfo buildingInfo, int2 position )
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{
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var footprint = buildingInfo.Footprint.Where( x => !char.IsWhiteSpace( x ) ).ToArray();
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foreach( var tile in TilesWhere( buildingInfo.Name, buildingInfo.Dimensions, footprint, a => a == 'x' ) )
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yield return tile + position;
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}
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static IEnumerable<int2> TilesWhere( string name, int2 dim, char[] footprint, Func<char, bool> cond )
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{
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if( footprint.Length != dim.X * dim.Y )
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throw new InvalidOperationException( "Invalid footprint for " + name );
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int index = 0;
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for( int y = 0 ; y < dim.Y ; y++ )
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for( int x = 0 ; x < dim.X ; x++ )
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if( cond( footprint[ index++ ] ) )
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yield return new int2( x, y );
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}
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public static int2 AdjustForBuildingSize( BuildingInfo unitInfo )
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{
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var dim = unitInfo.Dimensions;
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return new int2( dim.X / 2, dim.Y > 1 ? ( dim.Y + 1 ) / 2 : 0 );
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}
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}
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}
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