Summary

This chapter has provided a review of all of the Scratch sensing code blocks (except for the ones that work with Scratch Boards). You learned how to detect collisions, identify when the left mouse button or a keyboard key is pressed, and even to determine when a sprite comes into contact with different colors on the stage. You learned how to work with the timer as a means of controlling application activity. This chapter also showed you how to retrieve different property values belonging to sprites and the stage and to detect the loudness of microphone input. Use of the information presented in this chapter is key to the development of interactive Scratch applications and games.