Bolt opened the ticket and wrote:

tested in r25779M

The function AITile.IsBuildableRectangle can report the result is buildable on an invalid tile. The issue makes it harder to use the function around the edges of the map and seperate boundry tests are required to ensure a vaild tile is used prior to calling this function.

the following should return a false, however they are returning true:
AITile.IsBuildableRectangle(AIMap.GetTileIndex(-1, -1), 1, 1)
AITile.IsBuildableRectangle(AIMap.GetTileIndex(-1, -1), 2, 2)

the attached patch adds the required test the the IsBuildableRectangle function

Attachments

• IsBuildableRectangle function update for script_tile.cpp.patch (0.31 KiB)

Reported version: trunk
Operating system: All

This issue was imported from FlySpray: https://bugs.openttd.org/task/5754