/// <summary>
/// 起点から指定した方向に一つ進んだ座標を返します。
/// </summary>
private static Point getNextDirectionPosition(Point startPos, Map.Direction4 dir)
{
var nextTile = startPos;
switch (dir)
{
case Map.Direction4.East:
nextTile = new Point(nextTile.X + 1, nextTile.Y);
break;
case Map.Direction4.South:
nextTile = new Point(nextTile.X, nextTile.Y + 1);
break;
case Map.Direction4.West:
nextTile = new Point(nextTile.X - 1, nextTile.Y);
break;
case Map.Direction4.North:
nextTile = new Point(nextTile.X, nextTile.Y - 1);
break;
}
return(nextTile);
}
/// <summary>
/// ４方向をツクール2000/2003の方向順序に変換します。
/// </summary>
/// <param name="newDir4">現在の規格の４方向</param>
/// <returns>旧規格の４方向</returns>
private OldTkoolDirection4 ConvertToOldDirection(Map.Direction4 newDir4)
{
switch (newDir4)
{
case Map.Direction4.East:
return(OldTkoolDirection4.East);
case Map.Direction4.West:
return(OldTkoolDirection4.West);
case Map.Direction4.South:
return(OldTkoolDirection4.South);
case Map.Direction4.North:
return(OldTkoolDirection4.North);
}
return(OldTkoolDirection4.None);
}
/// <summary>
/// 指定した進行方向で通路を削ります。
/// </summary>
/// <param name="link">対象とする通路</param>
/// <param name="trimDirection">削っていく方向 (東向きの場合は左端が削られます)</param>
public void TrimLink(LinkData link, Map.Direction4 trimDirection)
{
//始点・終点・固定軸を決定する
var start = 0;
var end = 0;
var pivot = 0;
var step = 0;
switch (trimDirection)
{
case Map.Direction4.East:
start = link.Start.X;
end = link.End.X;
pivot = link.Start.Y;
step = 1;
break;
case Map.Direction4.West:
start = link.End.X;
end = link.Start.X;
pivot = link.Start.Y;
step = -1;
break;
case Map.Direction4.South:
start = link.Start.Y;
end = link.End.Y;
pivot = link.Start.X;
step = 1;
break;
case Map.Direction4.North:
start = link.End.Y;
end = link.Start.Y;
pivot = link.Start.X;
step = -1;
break;
}
//逐次削っていく
for (var p = start; (0 < step) ? (start <= p && p <= end) : (end <= p && p <= start); p += step)
{
var cutFlag = true;
//次のタイル位置をセットする
var checkTilePos = Point.Empty;
switch (trimDirection)
{
case Map.Direction4.East:
case Map.Direction4.West:
checkTilePos = new Point(p, pivot);
break;
case Map.Direction4.South:
case Map.Direction4.North:
checkTilePos = new Point(pivot, p);
break;
}
//３方向チェック
for (var d = 0; d < DirectionCount; d++)
{
if (d == (int)trimDirection)
{
//進行方向はチェックしない
continue;
}
var checkTileNextPos = getNextDirectionPosition(checkTilePos, (Map.Direction4)d);
if (this.TileData[checkTileNextPos.X, checkTileNextPos.Y] == GeneratedMapTile.Floor)
{
cutFlag = false;
break;
}
}
if (cutFlag)
{
//現在のタイルを削る
this.TileData[checkTilePos.X, checkTilePos.Y] = GeneratedMapTile.Ceil;
}
}
}
