54 lines
1.5 KiB
C#
54 lines
1.5 KiB
C#
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namespace ProjectCruiser.MovementStrategy
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{
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/// <summary>
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/// Стратегия перемещения объекта к краю экрана
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/// </summary>
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internal class MoveToBorder : AbstractStrategy
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{
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protected override bool IsTargetDestinaion()
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{
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ObjectParameters? objParams = GetObjectParameters;
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if (objParams == null)
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{
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return false;
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}
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return objParams.RightBorder - GetStep() <= FieldWidth
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&& objParams.RightBorder + GetStep() >= FieldWidth &&
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objParams.DownBorder - GetStep() <= FieldHeight
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&& objParams.DownBorder + GetStep() >= FieldHeight;
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}
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protected override void MoveToTarget()
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{
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ObjectParameters? objParams = GetObjectParameters;
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if (objParams == null)
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{
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return;
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}
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int diffX = objParams.RightBorder - FieldWidth;
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if (Math.Abs(diffX) > GetStep())
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{
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if (diffX > 0)
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{
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MoveLeft();
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}
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else
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{
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MoveRight();
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}
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}
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int diffY = objParams.DownBorder - FieldHeight;
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if (Math.Abs(diffY) > GetStep())
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{
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if (diffY > 0)
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{
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MoveUp();
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}
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else
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{
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MoveDown();
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}
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}
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}
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}
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}
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