pacman-rules

local is_true = true
local is_false = false

true and true  --> true
true and false --> false
false or true  --> true
false or false --> false
not false      --> true
not true       --> false

-- prints 0
if is_true == true then
  print(0)
else
  print(1)
end

1 and 2          --> 2
nil and 2        --> nil
false and 2      --> false
1 or 2           --> 1
false or 'hello' --> "hello"
nil or false     --> false

Instructions

In this exercise, you need to implement some rules from the classic game Pac-Man.

You have four rules to implement, all related to the game states.

1. Define if Pac-Man eats a ghost

Implement a function that takes in if Pac-Man has a power pellet active and if Pac-Man is touching a ghost and returns a boolean value if Pac-Man is able to eat the ghost. The function should return true only if Pac-Man has a power pellet active and is touching a ghost.

rules.eat_ghost(false, true)
-- => false

2. Define if Pac-Man scores

Implement a function that takes in if Pac-Man is touching a power pellet and if Pac-Man is touching a dot and returns a boolean value if Pac-Man scored. The function should return true if Pac-Man is touching a power pellet or a dot.

rules.score(true, true)
-- => true

3. Define if Pac-Man loses

Implement a function that takes in if Pac-Man has a power pellet active and if Pac-Man is touching a ghost and returns a boolean value if Pac-Man loses. The function should return true if Pac-Man is touching a ghost and does not have a power pellet active.

rules.lose(false, true)
-- => true

4. Define if Pac-Man wins

Implement a function that takes in if Pac-Man has eaten all of the dots, if Pac-Man has a power pellet active and if Pac-Man is touching a ghost and returns a boolean value if Pac-Man wins. The function should return true if Pac-Man has eaten all of the dots and has not lost based on the arguments defined in part 3.

rules.win(false, true, false)
-- => false