71 lines
2.1 KiB
C#
Executable File
71 lines
2.1 KiB
C#
Executable File
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using IjwFramework.Collections;
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namespace OpenRa.Game.GameRules
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{
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class TechTree
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{
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readonly Cache<string, List<UnitInfo.BuildingInfo>> producesIndex = new Cache<string, List<UnitInfo.BuildingInfo>>( x => new List<UnitInfo.BuildingInfo>() );
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public TechTree()
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{
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foreach( var b in Rules.Categories[ "Building" ] )
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{
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var info = (UnitInfo.BuildingInfo)Rules.UnitInfo[ b ];
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foreach( var p in info.Produces )
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producesIndex[ p ].Add( info );
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}
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}
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public Cache<string, List<Actor>> GatherBuildings( Player player )
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{
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var ret = new Cache<string, List<Actor>>( x => new List<Actor>() );
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foreach( var b in Game.world.Actors.Where( x => x.Owner == player && Rules.UnitCategory[ x.unitInfo.Name ] == "Building" ) )
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ret[ b.unitInfo.Name ].Add( b );
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return ret;
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}
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public bool CanBuild( UnitInfo unit, Player player, Cache<string, List<Actor>> playerBuildings )
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{
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if( unit.TechLevel == -1 )
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return false;
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if( !unit.Owner.Any( x => x == player.Race ) )
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return false;
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foreach( var p in unit.Prerequisite )
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if( playerBuildings[ p ].Count == 0 )
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return false;
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if( producesIndex[ Rules.UnitCategory[ unit.Name ] ].All( x => playerBuildings[ x.Name ].Count == 0 ) )
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return false;
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return true;
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}
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public IEnumerable<string> BuildableItems( Player player, params string[] categories )
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{
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var playerBuildings = GatherBuildings( player );
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foreach( var unit in categories.SelectMany( x => Rules.Categories[ x ] ).Select( x => Rules.UnitInfo[ x ] ) )
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if( CanBuild( unit, player, playerBuildings ) )
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yield return unit.Name;
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}
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public IEnumerable<string> AllItems(Player player, params string[] categories)
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{
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return categories.SelectMany(x => Rules.Categories[x]).Select(x => Rules.UnitInfo[x].Name);
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}
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public IEnumerable<string> UnitBuiltAt( UnitInfo info )
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{
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if( info.BuiltAt.Length != 0 )
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return info.BuiltAt;
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else
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return producesIndex[ Rules.UnitCategory[ info.Name ] ].Select( x => x.Name );
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}
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}
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}
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