Count Constraint

The CountConstraint is a generator constraint that counts the number of tiles in a given set that are generated and ensures that the total in the final output is above/below a given number.

Eager

Normally, this constraint is run while generation occurs i.e. it'll count the tiles as generation occurs, and take action once the limit has been reached. This strategy generally works well, however in some cases it'll cause problems.

1. If a tile has a very high weight, but a low limit in the Count Constraint, then the limit will be reached early and the rest of the generation will have none of those tiles.

2. If the tile is very hard to place, and you've required at least a certain number of them, then the Count Constraint can wait too late before forcing placement, so the generation never succeeds.

These issues can be avoided by setting the constraint as "eager". When eager, it'll place the counted tiles first, before attempting to place any others, ensuring an even distribution, and priority positioning.