[gleam] complete pacman-rules

gleam/pacman-rules/.gitignore

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+*.beam
+*.ez
+build
+erl_crash.dump

gleam/pacman-rules/HELP.md

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+# Help
+
+## Running the tests
+
+To run the tests, run the command `gleam test` from within the exercise directory.
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit src/pacman_rules.gleam` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [Gleam track's documentation](https://exercism.org/docs/tracks/gleam)
+- The [Gleam track's programming category on the forum](https://forum.exercism.org/c/programming/gleam)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+To get help if you're having trouble, you can use one of the following resources:
+
+- [gleam.run](https://gleam.run/documentation/) is the gleam official documentation.
+- [Discord](https://discord.gg/Fm8Pwmy) is the discord channel.
+- [StackOverflow](https://stackoverflow.com/questions/tagged/gleam) can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.

gleam/pacman-rules/HINTS.md

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+# Hints
+
+## General
+
+- Don't worry about how the arguments are derived, just focus on combining the arguments to return the intended result.
+
+## 1. Define if pac-man can eat a ghost
+
+- The function must return a [bool][bool] value.
+- You can use the [bool][bool] operator `&&` to combine the arguments for a result.
+
+## 2. Define if pac-man scores
+
+- The function must return a [bool][bool] value.
+- You can use the [bool][bool] operator `||` to combine the arguments for a result.
+
+## 3. Define if pac-man loses
+
+- The function must return a [bool][bool] value.
+- You can use the [bool][bool] operators `&&` and `!` to combine the arguments for a result.
+
+## 4. Define if pac-man wins
+
+- The function must return a [bool][bool] value.
+- You can use the [bool][bool] operators `&&` and `!` to combine the arguments and results of one of the previously implemented functions.
+
+[bool]: https://gleam.run/book/tour/bools.html

gleam/pacman-rules/README.md

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+# Pacman Rules
+
+Welcome to Pacman Rules on Exercism's Gleam Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+If you get stuck on the exercise, check out `HINTS.md`, but try and solve it without using those first :)
+
+## Introduction
+
+## Bools
+
+Gleam represents true and false values with the `Bool` type. There are only two values: `True` and `False`. These values can be bound to a variable:
+
+```gleam
+let true_variable = True
+let false_variable = False
+```
+
+The `&&`, `||`, and `!` operators can be used to manipulate boolean values:
+
+```gleam
+True && True  // -> True
+True && False // -> False
+
+False || True  // -> True
+False || False // -> False
+
+!False // -> True
+!True  // -> False
+```
+
+The `&&` and `||` operators use short-circuit evaluation, which means that the expression on the right-hand side of the operator is only evaluated if needed.
+
+Each of the operators has a different precedence, where `!` is evaluated before `&&` and `||`. Braces can be used to evaluate one part of the expression before the others:
+
+```gleam
+!True && False   // -> False
+!{True && False} // -> True
+```
+
+## Instructions
+
+In this exercise, you need to translate some rules from the classic game Pac-Man into Gleam functions.
+
+You have four rules to translate, all related to the game states.
+
+> Don't worry about how the arguments are derived, just focus on combining the arguments to return the intended result.
+
+## 1. Define if Pac-Man eats a ghost
+
+Define the `eat_ghost` function that takes two arguments (_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.
+
+```gleam
+eat_ghost(False, True)
+// -> False
+```
+
+## 2. Define if Pac-Man scores
+
+Define the `score` function that takes two arguments (_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.
+
+```gleam
+score(True, True)
+// -> True
+```
+
+## 3. Define if Pac-Man loses
+
+Define the `lose` function that takes two arguments (_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.
+
+```gleam
+lose(False, True)
+// -> True
+```
+
+## 4. Define if Pac-Man wins
+
+Define the `win` function that takes three arguments (_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.
+
+```gleam
+win(False, True, False)
+// -> False
+```
+
+## Source
+
+### Created by
+
+- @lpil

gleam/pacman-rules/gleam.toml

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+name = "pacman_rules"
+version = "0.1.0"
+
+[dependencies]
+gleam_bitwise = "~> 1.2"
+gleam_otp = "~> 0.7 or ~> 1.0"
+gleam_stdlib = "~> 0.32 or ~> 1.0"
+simplifile = "~> 1.0"
+
+[dev-dependencies]
+exercism_test_runner = "~> 1.4"

gleam/pacman-rules/manifest.toml

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+# This file was generated by Gleam
+# You typically do not need to edit this file
+
+packages = [
+  { name = "argv", version = "1.0.1", build_tools = ["gleam"], requirements = [], otp_app = "argv", source = "hex", outer_checksum = "A6E9009E50BBE863EB37D963E4315398D41A3D87D0075480FC244125808F964A" },
+  { name = "exercism_test_runner", version = "1.7.0", build_tools = ["gleam"], requirements = ["argv", "gap", "glance", "gleam_community_ansi", "gleam_erlang", "gleam_json", "gleam_stdlib", "simplifile"], otp_app = "exercism_test_runner", source = "hex", outer_checksum = "2FC1BADB19BEC2AE77BFD2D3A606A014C85412A7B874CAFC4BA8CF04B0B257CD" },
+  { name = "gap", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_community_ansi", "gleam_stdlib"], otp_app = "gap", source = "hex", outer_checksum = "2EE1B0A17E85CF73A0C1D29DA315A2699117A8F549C8E8D89FA8261BE41EDEB1" },
+  { name = "glance", version = "0.8.2", build_tools = ["gleam"], requirements = ["gleam_stdlib", "glexer"], otp_app = "glance", source = "hex", outer_checksum = "ACF09457E8B564AD7A0D823DAFDD326F58263C01ACB0D432A9BEFDEDD1DA8E73" },
+  { name = "gleam_bitwise", version = "1.3.1", build_tools = ["gleam"], requirements = [], otp_app = "gleam_bitwise", source = "hex", outer_checksum = "B36E1D3188D7F594C7FD4F43D0D2CE17561DE896202017548578B16FE1FE9EFC" },
+  { name = "gleam_community_ansi", version = "1.4.0", build_tools = ["gleam"], requirements = ["gleam_community_colour", "gleam_stdlib"], otp_app = "gleam_community_ansi", source = "hex", outer_checksum = "FE79E08BF97009729259B6357EC058315B6FBB916FAD1C2FF9355115FEB0D3A4" },
+  { name = "gleam_community_colour", version = "1.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_community_colour", source = "hex", outer_checksum = "A49A5E3AE8B637A5ACBA80ECB9B1AFE89FD3D5351FF6410A42B84F666D40D7D5" },
+  { name = "gleam_erlang", version = "0.24.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "26BDB52E61889F56A291CB34167315780EE4AA20961917314446542C90D1C1A0" },
+  { name = "gleam_json", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "thoas"], otp_app = "gleam_json", source = "hex", outer_checksum = "8B197DD5D578EA6AC2C0D4BDC634C71A5BCA8E7DB5F47091C263ECB411A60DF3" },
+  { name = "gleam_otp", version = "0.10.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "0B04FE915ACECE539B317F9652CAADBBC0F000184D586AAAF2D94C100945D72B" },
+  { name = "gleam_stdlib", version = "0.36.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "C0D14D807FEC6F8A08A7C9EF8DFDE6AE5C10E40E21325B2B29365965D82EB3D4" },
+  { name = "glexer", version = "0.7.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "glexer", source = "hex", outer_checksum = "4484942A465482A0A100936E1E5F12314DB4B5AC0D87575A7B9E9062090B96BE" },
+  { name = "simplifile", version = "1.5.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "EB9AA8E65E5C1E3E0FDCFC81BC363FD433CB122D7D062750FFDF24DE4AC40116" },
+  { name = "thoas", version = "0.4.1", build_tools = ["rebar3"], requirements = [], otp_app = "thoas", source = "hex", outer_checksum = "4918D50026C073C4AB1388437132C77A6F6F7C8AC43C60C13758CC0ADCE2134E" },
+]
+
+[requirements]
+exercism_test_runner = { version = "~> 1.4" }
+gleam_bitwise = { version = "~> 1.2" }
+gleam_otp = { version = "~> 0.7 or ~> 1.0" }
+gleam_stdlib = { version = "~> 0.32 or ~> 1.0" }
+simplifile = { version = "~> 1.0" }

gleam/pacman-rules/src/pacman_rules.gleam

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+pub fn eat_ghost(power_pellet_active: Bool, touching_ghost: Bool) -> Bool {
+  power_pellet_active && touching_ghost
+}
+
+pub fn score(touching_power_pellet: Bool, touching_dot: Bool) -> Bool {
+  touching_power_pellet || touching_dot
+}
+
+pub fn lose(power_pellet_active: Bool, touching_ghost: Bool) -> Bool {
+  touching_ghost && !power_pellet_active
+}
+
+pub fn win(
+  has_eaten_all_dots: Bool,
+  power_pellet_active: Bool,
+  touching_ghost: Bool,
+) -> Bool {
+  has_eaten_all_dots && !lose(power_pellet_active, touching_ghost)
+}

gleam/pacman-rules/test/pacman_rules_test.gleam

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+import exercism/test_runner
+import pacman_rules
+
+pub fn main() {
+  test_runner.main()
+}
+
+pub fn ghost_gets_eaten_test() {
+  let assert True = pacman_rules.eat_ghost(True, True)
+}
+
+pub fn ghost_does_not_get_eaten_because_no_power_pellet_active_test() {
+  let assert False = pacman_rules.eat_ghost(False, True)
+}
+
+pub fn ghost_does_not_get_eaten_because_not_touching_ghost_test() {
+  let assert False = pacman_rules.eat_ghost(True, False)
+}
+
+pub fn ghost_does_not_get_eaten_because_no_power_pellet_is_active_even_if_not_touching_ghost_test() {
+  let assert False = pacman_rules.eat_ghost(False, False)
+}
+
+pub fn score_when_eating_dot_test() {
+  let assert True = pacman_rules.score(True, False)
+}
+
+pub fn score_when_eating_power_pellet_test() {
+  let assert True = pacman_rules.score(False, True)
+}
+
+pub fn no_score_when_nothing_eaten_test() {
+  let assert False = pacman_rules.score(False, False)
+}
+
+pub fn lose_if_touching_ghost_without_power_pellet_active_test() {
+  let assert True = pacman_rules.lose(False, True)
+}
+
+pub fn dont_lose_if_touching_ghost_with_power_pellet_active_test() {
+  let assert False = pacman_rules.lose(True, True)
+}
+
+pub fn dont_lose_if_not_touching_ghost_test() {
+  let assert False = pacman_rules.lose(True, False)
+}
+
+pub fn win_if_all_dots_eaten_test() {
+  let assert True = pacman_rules.win(True, False, False)
+}
+
+pub fn dont_win_if_all_dots_eaten_but_touching_ghost_test() {
+  let assert False = pacman_rules.win(True, False, True)
+}
+
+pub fn win_if_all_dots_eaten_and_touching_ghost_with_power_pellet_active_test() {
+  let assert True = pacman_rules.win(True, True, True)
+}