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Add calculated rollback rectangle for tile edits

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This commit is contained in:
Chris 2020-11-13 18:32:52 +10:30
parent ca38d64632
commit 77fd8c9c9f
1 changed files with 67 additions and 2 deletions
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69
TShockAPI/Bouncer.cs
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@ -451,7 +451,7 @@ namespace TShockAPI
if (args.Player.IsBeingDisabled())
{
TShock.Log.ConsoleDebug("Bouncer / OnTileEdit rejected from wire cutter from {0} {1} {2}", args.Player.Name, action, editData);
TShock.Log.ConsoleDebug("Bouncer / OnTileEdit rejected from disable from {0} {1} {2}", args.Player.Name, action, editData);
args.Player.SendTileSquare(tileX, tileY, 4);
args.Handled = true;
return;
@ -461,7 +461,9 @@ namespace TShockAPI
&& !args.Player.HasBuildPermission(tileX, tileY))
{
TShock.Log.ConsoleDebug("Bouncer / OnTileEdit rejected from ice/build from {0} {1} {2}", args.Player.Name, action, editData);
args.Player.SendTileSquare(tileX, tileY, 4);
GetRollbackRectSize(tileX, tileY, out byte width, out byte length, out int offsetY);
args.Player.SendTileRect((short)(tileX - width), (short)(tileY + offsetY), (byte)(width * 2), (byte)(length + 1));
args.Handled = true;
return;
}
@ -573,6 +575,69 @@ namespace TShockAPI
}
}
/// <summary>
/// Gets the size of the rectangle required to rollback all tiles impacted by a single tile.
/// Eg, rolling back the destruction of a tile that had a Safe on top would require rolling back the safe as well as the
/// tile that was destroyed
/// </summary>
/// <param name="tileX">X position of the initial tile</param>
/// <param name="tileY">Y position of the initial tile</param>
/// <param name="width">The calculated width of the rectangle</param>
/// <param name="length">The calculated length of the rectangle</param>
/// <param name="offsetY">The Y offset from the initial tile Y that the rectangle should begin at</param>
private void GetRollbackRectSize(int tileX, int tileY, out byte width, out byte length, out int offsetY)
{
CheckForTileObjectsAbove(out byte topWidth, out byte topLength, out offsetY);
CheckForTileObjectsBelow(out byte botWidth, out byte botLength);
// If no tile object exists around the given tile, width will be 1. Else the width of the largest tile object will be used
width = Math.Max((byte)1, Math.Max(topWidth, botWidth));
// If no tile object exists around the given tile, length will be 1. Else the sum of all tile object lengths will be used
length = Math.Max((byte)1, (byte)(topLength + botLength));
// Checks for the presence of tile objects above the tile being checked
void CheckForTileObjectsAbove(out byte objWidth, out byte objLength, out int yOffset)
{
objWidth = 0;
objLength = 0;
yOffset = 0;
if (tileY <= 0)
{
return;
}
ITile above = Main.tile[tileX, tileY - 1];
if (above.type < TileObjectData._data.Count && TileObjectData._data[above.type] != null)
{
TileObjectData data = TileObjectData._data[above.type];
objWidth = (byte)data.Width;
objLength = (byte)data.Height;
yOffset = -data.Height; //y offset is the negative of the height of the tile object
}
}
//Checks for the presence of tile objects below the tile being checked
void CheckForTileObjectsBelow(out byte objWidth, out byte objLength)
{
objWidth = 0;
objLength = 0;
if (tileY == Main.maxTilesY)
{
return;
}
ITile below = Main.tile[tileX, tileY + 1];
if (below.type < TileObjectData._data.Count && TileObjectData._data[below.type] != null)
{
TileObjectData data = TileObjectData._data[below.type];
objWidth = (byte)data.Width;
objLength = (byte)data.Height;
}
}
}
/// <summary>Registered when items fall to the ground to prevent cheating.</summary>
/// <param name="sender">The object that triggered the event.</param>
/// <param name="args">The packet arguments that the event has.</param>