"Unveiling" an image

[Pestry]

Hi,
i want to make a game.There is an image and the user must answer some
questions. Every time he answers correctly, a part of the image is
unveiled. If he answers all the questions correctly, he will be able to
see the whole image.How is it possible to uveil some parts of an image?

thanks in advance

 

[Andrew Thompson]

Hi,
i want to make a game.

Please refrain from multi-posting.

 

[Oliver Wong]

Hi,
i want to make a game.There is an image and the user must answer some
questions. Every time he answers correctly, a part of the image is
unveiled. If he answers all the questions correctly, he will be able to
see the whole image.How is it possible to uveil some parts of an image?

thanks in advance

One way is to have the full image loaded into an offscreen buffer, and
then copy only part of the buffer onto the surface that is visible to the
user.

- Oliver