|Touching Color ()?|
The Touching Color ()? block is a Sensing block and a Boolean block. The block checks if its sprite is touching the specified color. If the sprite is touching the color, the block returns "true"; triggering the rest of the script to continue. If it is not, it returns "false" the script remains neutral.
The color can be chosen by clicking on the block's color square, and then clicking anywhere in the Scratch project. For example, if the mouse was hovering over the color: blue and was clicked the color square would turn blue.
As this block detects if a color on its sprite is touching a color, it is widely used in collision detecting. Platformers often use this block.
Some common uses for the Touching Color ()? block:
- Moving a sprite until it touches a color
repeat until <touching color [#000000]?> move (10) steps end
- Making a sprite do things if it touches a color — for example, if the sprite touches blue (water), it reacts in a specific way
if <touching color [#0000FF]?> then say [I found water!] for (2) secs end
- Stopping bullets when they hit walls of a specific color
forever if <touching color [#ff0000]?> then hide
- In a maze, sensing if a sprite has hit a dead-end
forever if <touching color [#007f00]?> then say [Dead end!] for (1) secs
- Making sprites not go through walls
forever if <touching color [#ffff7f]?> then set [x velocity v] to (0)
- Making Game End when touching color
forever if <touching color [#01efff]?> then say [Game Over] for (1) secs broadcast [Game Over v]