Moved Activity and friends into separate files.
This commit is contained in:
Bob
245
OpenRa.Game/Traits/Activities/Move.cs
Executable file
245
OpenRa.Game/Traits/Activities/Move.cs
Executable file
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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.Game.GameRules;
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namespace OpenRa.Game.Traits.Activities
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{
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class Move : Activity
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{
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public Activity NextActivity { get; set; }
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int2? destination;
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public List<int2> path;
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Func<Actor, Mobile, List<int2>> getPath;
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MovePart move;
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public Move( int2 destination )
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{
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this.getPath = ( self, mobile ) => Game.PathFinder.FindUnitPath(
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self.Location, destination,
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mobile.GetMovementType() );
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this.destination = destination;
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}
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public Move( Actor target, int range )
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{
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this.getPath = ( self, mobile ) => Game.PathFinder.FindUnitPathToRange(
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self.Location, target.Location,
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mobile.GetMovementType(), range );
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this.destination = null;
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}
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static bool CanEnterCell( int2 c, Actor self )
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{
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var u = Game.UnitInfluence.GetUnitAt( c );
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var b = Game.BuildingInfluence.GetBuildingAt( c );
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return ( u == null || u == self ) && b == null;
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}
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public void Tick( Actor self, Mobile mobile )
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{
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if( move != null )
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{
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move.TickMove( self, mobile, this );
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return;
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}
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if( destination == self.Location )
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{
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mobile.InternalSetActivity( NextActivity );
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return;
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}
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if( path == null ) path = getPath( self, mobile ).TakeWhile( a => a != self.Location ).ToList();
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if( path.Count == 0 )
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{
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destination = mobile.toCell;
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return;
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}
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destination = path[ 0 ];
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var nextCell = PopPath( self, mobile );
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if( nextCell == null )
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return;
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int2 dir = nextCell.Value - mobile.fromCell;
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var firstFacing = Util.GetFacing( dir, mobile.facing );
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if( firstFacing != mobile.facing )
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{
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var t = new Turn( firstFacing ) { NextActivity = this };
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mobile.InternalSetActivity( t );
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path.Add( nextCell.Value );
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t.Tick( self, mobile );
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}
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else
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{
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mobile.toCell = nextCell.Value;
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move = new MoveFirstHalf(
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CenterOfCell( mobile.fromCell ),
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BetweenCells( mobile.fromCell, mobile.toCell ),
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mobile.facing,
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mobile.facing,
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0 );
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Game.UnitInfluence.Update( mobile );
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move.TickMove( self, mobile, this );
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}
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}
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int2? PopPath( Actor self, Mobile mobile )
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{
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if( path.Count == 0 ) return null;
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var nextCell = path[ path.Count - 1 ];
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if( !CanEnterCell( nextCell, self ) )
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{
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if( ( mobile.toCell - destination.Value ).LengthSquared <= 8 )
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{
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path.Clear();
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return null;
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}
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Game.UnitInfluence.Remove( mobile );
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var newPath = Game.PathFinder.FindPathToPath( self.Location, path, mobile.GetMovementType() )
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.TakeWhile( a => a != self.Location )
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.ToList();
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Game.UnitInfluence.Add( mobile );
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if( newPath.Count == 0 )
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return null;
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while( path[ path.Count - 1 ] != newPath[ 0 ] )
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path.RemoveAt( path.Count - 1 );
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for( int i = 1 ; i < newPath.Count ; i++ )
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path.Add( newPath[ i ] );
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if( path.Count == 0 )
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return null;
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nextCell = path[ path.Count - 1 ];
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}
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path.RemoveAt( path.Count - 1 );
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return nextCell;
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}
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static float2 CenterOfCell( int2 loc )
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{
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return new float2( 12, 12 ) + Game.CellSize * (float2)loc;
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}
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static float2 BetweenCells( int2 from, int2 to )
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{
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return 0.5f * ( CenterOfCell( from ) + CenterOfCell( to ) );
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}
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abstract class MovePart
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{
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public readonly float2 from, to;
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public readonly int fromFacing, toFacing;
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public int moveFraction;
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public readonly int moveFractionTotal;
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public MovePart( float2 from, float2 to, int fromFacing, int toFacing, int startingFraction )
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{
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this.from = from;
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this.to = to;
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this.fromFacing = fromFacing;
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this.toFacing = toFacing;
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this.moveFraction = startingFraction;
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this.moveFractionTotal = (int)( to - from ).Length * ( 25 / 6 );
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}
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public void TickMove( Actor self, Mobile mobile, Move parent )
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{
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var oldFraction = moveFraction;
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var oldTotal = moveFractionTotal;
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moveFraction += ( self.unitInfo as UnitInfo.MobileInfo ).Speed;
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UpdateCenterLocation( self, mobile );
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if( moveFraction >= moveFractionTotal )
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{
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parent.move = OnComplete( self, mobile, parent );
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if( parent.move == null )
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UpdateCenterLocation( self, mobile );
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}
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}
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void UpdateCenterLocation( Actor self, Mobile mobile )
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{
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var frac = (float)moveFraction / moveFractionTotal;
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self.CenterLocation = float2.Lerp( from, to, frac );
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if( moveFraction >= moveFractionTotal )
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mobile.facing = toFacing & 0xFF;
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else
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mobile.facing = ( fromFacing + ( toFacing - fromFacing ) * moveFraction / moveFractionTotal ) & 0xFF;
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}
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protected abstract MovePart OnComplete( Actor self, Mobile mobile, Move parent );
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}
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class MoveFirstHalf : MovePart
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{
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public MoveFirstHalf( float2 from, float2 to, int fromFacing, int toFacing, int startingFraction )
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: base( from, to, fromFacing, toFacing, startingFraction )
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{
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}
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protected override MovePart OnComplete( Actor self, Mobile mobile, Move parent )
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{
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var nextCell = parent.PopPath( self, mobile );
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if( nextCell != null )
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{
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if( ( nextCell - mobile.toCell ) != ( mobile.toCell - mobile.fromCell ) )
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{
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var ret = new MoveFirstHalf(
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BetweenCells( mobile.fromCell, mobile.toCell ),
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BetweenCells( mobile.toCell, nextCell.Value ),
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mobile.facing,
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Util.GetNearestFacing( mobile.facing, Util.GetFacing( nextCell.Value - mobile.toCell, mobile.facing ) ),
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moveFraction - moveFractionTotal );
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mobile.fromCell = mobile.toCell;
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mobile.toCell = nextCell.Value;
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Game.UnitInfluence.Update( mobile );
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return ret;
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}
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else
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parent.path.Add( nextCell.Value );
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}
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var ret2 = new MoveSecondHalf(
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BetweenCells( mobile.fromCell, mobile.toCell ),
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CenterOfCell( mobile.toCell ),
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mobile.facing,
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mobile.facing,
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moveFraction - moveFractionTotal );
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mobile.fromCell = mobile.toCell;
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Game.UnitInfluence.Update( mobile );
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return ret2;
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}
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}
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class MoveSecondHalf : MovePart
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{
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public MoveSecondHalf( float2 from, float2 to, int fromFacing, int toFacing, int startingFraction )
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: base( from, to, fromFacing, toFacing, startingFraction )
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{
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}
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protected override MovePart OnComplete( Actor self, Mobile mobile, Move parent )
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{
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self.CenterLocation = CenterOfCell( mobile.toCell );
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mobile.fromCell = mobile.toCell;
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return null;
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}
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}
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public void Cancel( Actor self, Mobile mobile )
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{
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path = new List<int2>();
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NextActivity = null;
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}
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}
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}
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