Fantasy Zombie Survivor

Original source: https://github.com/ardalis/kata-catalog/blob/main/katas/Zombie%20Survivors.md

Description

by Guillaume: approche fonctionnelle et DDD

This kata constructs a model for a zombie boardgame's survivors. If you enjoy the kata, you may find the Zombicide Black Plague (or another) series of boardgames fun as well. Complete each step before reading ahead to the next one. Revise your design to react to new requirements as they appear.

Implements the game

Step One: Survivors

The zombie apocalypse has occurred. You must model a Survivor in this harsh fantasy world. Sometimes, they get hurt, and even die.

• Each Survivor has a name.
• Each Survivor begins with 0 Wounds.
• A Survivor who receives 2 Wounds dies immediately; additional Wounds are ignored.
• Each Survivor starts with the ability to perform 3 Actions per turn.

Step Two: Equipment

Survivors can use equipment to help them in their mission.

• Each Survivor can be equipped of 1 Weapon or a "Torch" in each hand.

• Each Survivor can be equipped of 1 Armor.

• Each Survivor can be equipped of 1 special equipment unique to themselves, in replacement of the Armor.

• Each Survivor can carry up to 5 pieces of Equipment in its backpack.

  • If the backpack is full, 1 Equipment (or the new Equipment) must be discarded.
  • If the discarded Equipment is a Weapon or an Armor or a Torch or the special equipment of the Survivor, it can be equipped.

• Examples of Weapon: "Sword", "Axe", "Lightening" (Combat spell), "Heal"(Magic enchantment)

• Examples of Armor: "Shield", "Leather Armor", "Plate Armor"

• Examples of other Equipment: "Torch", "Dragon's bile"

Step Three: The Game

A Game includes one or more Survivors, as well as other Game elements that are outside the scope of this kata.

• A Game begins with 0 Survivors.
• A Game can have Survivors added to it at any time.
  • Survivor Names within a Game must be unique.
• A Game ends immediately if all of its Survivors have died.

Step Four: Experience and Levels

As Survivors overcome zombies, they gain experience.

• Each Survivor begins with 0 Experience.
• Each Survivor has a current Level.
• Each Survivor begins at Level Blue.
• Each time the Survivor kills a zombie, they gain 1 Experience.
• Levels consist of (in order): Blue, Yellow, Orange, Red.
  • When a Survivor exceeds 6 Experience, he advances ("level up") to level Yellow.
  • When a Survivor exceeds 18 Experience, he advances to level Orange.
  • When a Survivor exceeds 42 Experience, he advances to level Red.
• A Game has a Level (Level here is identical to Level for a Survivor).
• A Game begins at Level Blue.
• A Game Level is always equal to the level of the highest living Survivor's Level.

Step Five : Output

The Game includes a running history of events that have taken place as it has been played. Managing game history is a Game responsibility.

• A Game's History begins by recording the time the Game began.
• A Game's History notes that a Survivor has been added to the Game.
• A Game's History notes that a Survivor acquires a piece of Equipment.
• A Game's History notes that a Survivor is wounded.
• A Game's History notes that a Survivor dies.
• A Game's History notes that a Survivor levels up.
• A Game's History notes that the Game Level changes.
• A Game's History notes that the Game has ended when the last Survivor dies.

Step Six: Progression

As the Game proceeds, Survivors get better.

• A set of potential Skills and their corresponding Level where they are unlocked is called a Skill Tree.
• Each Survivor begins with a Skill Tree.
  • A Skill Tree consists of potential skills and unlocked skills.
  • A Skill Tree begins with 1 potential skill at level Yellow, 2 at Orange, and 3 at Red.
  • All Skill Trees have the same Yellow skill: "+1 Action".
• Each Survivor can have a Skill Tree unique to themselves.
• When a Survivor first advances to a particular level, they may unlock one available skill from that level.
  • At level Yellow, only the "+1 Action" skill should ever be available, so it will be unlocked.
• A Survivor who has "+1 Action" should have one additional Action (a total of 4).
• Additional Skills can be: "+1 Die (Melee)", "+1 Die (Ranged)", "+1 Free Move Action", "+1 Free Attack (Melee)", "+1 Free Attack (Ranged)", etc.
• When a Survivor advanced beyond 43 experience, they remain Level Red but restart through the skill tree a second time.
  • Upon reaching Yellow again (43 + 7 = 50 total), no more potential skills are available.
  • Upon reaching Orange again (43 + 18 = 61 total), a second Orange skills is unlocked.
  • Upon reaching Red again (43 + 43 = 86 total), a second Red skill is unlocked.
• A Survivor can restart a second time, unlocking their last Red skill at (43 + 43 + 43 = 129 total) experience.
• The Game History must note that a Survivor has acquired a new Skill.