Lua Health and Armor System for STAR WARS RP Project

This document outlines a robust health and armor system implemented in Lua for a STAR WARS Role-Playing Game (RP). The system includes features for managing player health, armor, and damage taken, along with input validation.

Key Features

1. Health Management: Allows tracking of player health, including operations for taking damage and healing.
2. Armor System: Incorporates armor rating which mitigates damage taken by players.
3. Input Validation: Ensures that inputs are valid and prevent unintended behavior.
4. Comments and Documentation: Each function is well-documented with comments explaining each step.

Lua Code Implementation

-- Health and Armor System Module
HealthArmorSystem = {}

-- Constants for maximum health and armor
local MAX_HEALTH = 100
local MAX_ARMOR = 50

-- Player class definition
HealthArmorSystem.Player = {}
HealthArmorSystem.Player.__index = HealthArmorSystem.Player

-- Constructor for player
function HealthArmorSystem.Player:new(name)
    local player = {}
    setmetatable(player, HealthArmorSystem.Player)

    player.name = name or "Unknown"
    player.health = MAX_HEALTH
    player.armor = MAX_ARMOR

    return player
end

--- Takes damage based on the player's armor and updates health.
-- @param self The player instance.
-- @param damage number The amount of damage taken.
-- @return boolean Indicates if the player is alive after damage.
function HealthArmorSystem.Player:takeDamage(damage)
    -- Validate input
    if type(damage) ~= "number" or damage < 0 then
        error("Invalid damage value. Must be a non-negative number.")
    end

    -- Calculate effective damage after armor
    local effectiveDamage = damage - self.armor
    if effectiveDamage < 0 then effectiveDamage = 0 end

    -- Update health and armor
    self.health = self.health - effectiveDamage
    self.armor = math.max(self.armor - damage, 0) -- Armor cannot go below 0

    -- Check if player is still alive
    return self.health > 0
end

--- Heals the player for a given amount, capping health at maximum.
-- @param self The player instance.
-- @param healAmount number The amount of health to restore.
function HealthArmorSystem.Player:heal(healAmount)
    -- Validate input
    if type(healAmount) ~= "number" or healAmount < 0 then
        error("Invalid heal amount. Must be a non-negative number.")
    end

    self.health = math.min(self.health + healAmount, MAX_HEALTH)
end

--- Returns the current health and armor status of the player.
-- @param self The player instance.
-- @return table A table containing the health and armor status.
function HealthArmorSystem.Player:getStatus()
    return {
        health = self.health,
        armor = self.armor,
        isAlive = self.health > 0
    }
end

return HealthArmorSystem

Code Explanation

1. Player Class: A Lua table is defined representing a player, initialized with a name, health, and armor.
2. takeDamage Function: This function reduces health based on incoming damage while considering armor:
   • Validates the damage input.
   • Calculates effective damage considering armor.
   • Updates health and reduces armor appropriately.
   • Returns whether the player is alive.
3. heal Function: Allows players to regain health, ensuring it doesn’t exceed the maximum health limit.
4. getStatus Function: Provides current health and armor status, indicating if the player is alive.

Usage Example

-- Example usage of the Health and Armor System

local HASystem = require("HealthArmorSystem")

-- Create a new player
local player1 = HASystem.Player:new("Luke Skywalker")

-- Print initial status
print(player1:getStatus())

-- Player takes damage
local alive = player1:takeDamage(30)
print("Alive after damage?", alive)
print(player1:getStatus())

-- Player heals
player1:heal(20)
print(player1:getStatus())

Conclusion

This Lua health and armor system for a STAR WARS RP project is scalable and efficient. It is suitable for various gameplay scenarios, easily extended for additional features, and enables robust character management. For further development, consider exploring courses on the Enterprise DNA Platform to expand your data science and programming skills.