98 lines
2.0 KiB
C#
98 lines
2.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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using OpenRa.FileFormats;
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using System.Drawing;
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using BluntDirectX.Direct3D;
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namespace OpenRa.Game
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{
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class Mcv : Actor
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{
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static Range<int>? mcvRange = null;
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MoveOrder currentOrder = null;
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int facing = 0;
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public Mcv( float2 location, int palette )
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{
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this.location = location;
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this.palette = palette;
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if (mcvRange == null)
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mcvRange = UnitSheetBuilder.AddUnit("mcv");
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}
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static float2[] fvecs;
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static Mcv()
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{
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fvecs = new float2[32];
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for (int i = 0; i < 32; i++)
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{
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float angle = i / 16.0f * (float)Math.PI;
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fvecs[i] = new float2(-(float)Math.Sin(angle), -(float)Math.Cos(angle));
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}
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}
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int GetFacing(float2 d)
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{
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if (float2.WithinEpsilon(d, float2.Zero, 0.001f))
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return facing;
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int highest = -1;
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float highestDot = -1.0f;
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for (int i = 0; i < 32; i++)
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{
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float dot = float2.Dot(fvecs[i], d);
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if (dot > highestDot)
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{
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highestDot = dot;
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highest = i;
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}
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}
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return highest;
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}
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public override Sprite[] CurrentImages
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{
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get
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{
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return new Sprite[] { UnitSheetBuilder.sprites[facing + mcvRange.Value.Start] };
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}
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}
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public void Accept(MoveOrder o)
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{
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currentOrder = o;
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}
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const float Speed = 48.0f;
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public override void Tick( double t )
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{
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if( currentOrder == null )
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return;
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if( float2.WithinEpsilon( location, currentOrder.Destination, 1.0f ) )
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return;
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Range<float2> r = new Range<float2>(
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new float2( -Speed * (float)t, -Speed * (float)t ),
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new float2( Speed * (float)t, Speed * (float)t ) );
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float2 d = ( currentOrder.Destination - location ).Constrain( r );
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int desiredFacing = GetFacing( d );
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int df = (desiredFacing - facing + 32) % 32;
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if( df == 0 )
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location += d;
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else if( df > 16 )
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facing = ( facing + 31 ) % 32;
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else
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facing = ( facing + 1 ) % 32;
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}
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}
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}
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