These group of functions return a logical value TRUE or FALSE
according to Karel's evaluation of her world.
Uso
front_is_clear()
front_is_blocked()
left_is_clear()
left_is_blocked()
right_is_clear()
right_is_blocked()
beepers_present()
no_beepers_present()
karel_has_beepers()
karel_has_no_beepers()
facing_east()
facing_west()
facing_north()
facing_south()Detalles
The functions front_is_clear(), front_is_blocked(),
left_is_clear(), left_is_blocked(), right_is_clear() y
right_is_blocked() test if there is a wall in front of Karel, to her
left or to her right, respectively. The functions beepers_present()
and no_beepers_present() test whether there are any
beepers at Karel's current position. The functions
karel_has_beepers() and karel_has_no_beepers() test if Karel
has any beepers in her bag (not visible in the plot). The
functions facing_east(), facing_west(), facing_north()
and facing_south() test the direction to which Karel is facing right
now.
Ejemplos
generate_world("mundo001")
front_is_clear()
#> [1] TRUE
front_is_blocked()
#> [1] FALSE
left_is_clear()
#> [1] TRUE
left_is_blocked()
#> [1] FALSE
right_is_clear()
#> [1] FALSE
right_is_blocked()
#> [1] TRUE
beepers_present()
#> [1] FALSE
no_beepers_present()
#> [1] TRUE
karel_has_beepers()
#> [1] TRUE
karel_has_no_beepers()
#> [1] FALSE
facing_east()
#> [1] TRUE
facing_west()
#> [1] FALSE
facing_north()
#> [1] FALSE
facing_south()
#> [1] FALSE