Advanced Placement (AP) Computer Science

What type of block can be used to check if a sprite is touching another sprite?

1. Control block

2. Sensing block

3. Variables block

4. Boolean block

The correct answer is: Sensing block

The sensing block is specifically designed to interact with the environment and objects within a programming environment, such as those used in animation or game design contexts. When it comes to determining if one sprite is touching another, the sensing block provides the necessary functionality. This type of block contains specific commands that can detect interactions between sprites, including collision detection. For example, the "touching" function within the sensing block can be used to check whether a specified sprite is currently overlapping or in contact with another sprite. This capability is essential for creating interactive experiences where actions depend on the positions and movements of sprites relative to one another. Other block types do not serve this purpose. Control blocks are generally used to manage the flow of execution in a program, variables blocks are related to data storage and manipulation, and Boolean blocks typically deal with logical operations, which do not directly check touch interactions between sprites. Therefore, the sensing block is the correct choice for checking if a sprite is touching another sprite.