on Hit Wall

Run some code when a sprite contacts a wall.

We can detect when a moving sprite contacts a wall in the scene. You can then run some code if your sprite touches a location that is set as a wall. You choose the sprite kind to check for wall collisions.

When a wall hit is detected the sprite of the kind you asked for is given to you in the sprite parameter of handler.

A a sprite hitting a wall is dectected when the outside edges of their images make contact. If a sprite has it’s ghost flag set, any contact with the wall is ignored.

Parameters

• kind: the type of sprite to check for a wall hit.
• handler: the code to run when the sprite makes contact.

  • sprite: the sprite that hit the wall tile.

Example

Build a brick wall of tiles in the scene. Use the A to send a Ghost sprite toward the wall and watch it stop. When button B is pressed, switch the value of the ghost flag and see if the ghost sprite hits the wall or goes through.

See also

is hitting wall, tile hit of kind, overlaps with, set flag