/
evaluator.rb
448 lines (424 loc) · 15.6 KB
/
evaluator.rb
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# lib/gemwarrior/evaluator.rb
# Evaluates prompt input
require 'pry'
require_relative 'arena'
module Gemwarrior
class Evaluator
# CONSTANTS
## MESSAGES
PROGRAM_NAME = 'Gem Warrior'
QUIT_MESSAGE = 'Thanks for playing the game. Until next time...'.colorize(:yellow)
RESUME_MESSAGE = 'Back to adventuring!'.colorize(:green)
GO_PARAMS = 'Options: north, east, south, west'
CHANGE_PARAMS = 'Options: name'
DEBUG_LIST_PARAMS = 'Options: monsters, items, locations'
DEBUG_STAT_PARAMS = 'Options: atk_lo, atk_hi, strength, dexterity'
## ERRORS
ERROR_COMMAND_INVALID = 'That is not something the game yet understands.'
ERROR_GO_PARAM_MISSING = 'Just wander aimlessly? A direction would be nice.'
ERROR_GO_PARAM_INVALID = 'The place in that direction is far, far, FAR too dangerous. You should try a different way.'
ERROR_ATTACK_PARAM_MISSING = 'You cannot just "attack". You gotta choose something to attack.'
ERROR_ATTACK_PARAM_INVALID = 'That monster does not exist here or can\'t be attacked.'
ERROR_TAKE_PARAM_MISSING = 'You cannot just "take". You gotta choose something to take.'
ERROR_USE_PARAM_MISSING = 'You cannot just "use". You gotta choose something to use.'
ERROR_USE_PARAM_INVALID = 'You cannot use that, as it does not exist here or in your inventory.'
ERROR_USE_PARAM_UNUSEABLE = 'That object is not useable.'
ERROR_DROP_PARAM_MISSING = 'You cannot just "drop". You gotta choose something to drop.'
ERROR_EQUIP_PARAM_MISSING = 'You cannot just "equip". You gotta choose something to equip.'
ERROR_UNEQUIP_PARAM_MISSING = 'You cannot just "unequip". You gotta choose something to unequip.'
ERROR_CHANGE_PARAM_MISSING = 'You cannot just "change". You gotta choose something to change.'
ERROR_CHANGE_PARAM_INVALID = 'You cannot change that...yet.'
ERROR_LIST_PARAM_MISSING = 'You cannot just "list". You gotta choose something to list.'
ERROR_LIST_PARAM_INVALID = 'You cannot list that...yet.'
ERROR_DEBUG_STAT_PARAM_MISSING = 'You cannot just "change stats". You gotta choose a stat to change.'
ERROR_DEBUG_STAT_PARAM_INVALID = 'You cannot change that stat...yet.'
ERROR_DEBUG_TELEPORT_PARAMS_MISSING = 'You cannot just "teleport". You gotta specify an x AND y coordinate, at least.'
ERROR_DEBUG_TELEPORT_PARAMS_NEEDED = 'You cannot just "teleport" to an x coordinate without a y coordinate.'
ERROR_DEBUG_TELEPORT_PARAMS_INVALID = 'You cannot teleport there...yet.'
attr_accessor :world,
:commands, :aliases, :extras, :cmd_descriptions,
:devcommands, :devaliases, :devextras, :devcmd_descriptions
def initialize(world)
self.world = world
self.devcommands = %w(god beast list vars map stat teleport spawn)
self.devaliases = %w(gd bs ls v m s tp sp)
self.devextras = %w(st)
self.devcmd_descriptions = [
'Toggle god mode (i.e. invincible)',
'Toggle beast mode (i.e. super strength)',
'List all instances of a specific entity type',
'List all the variables in the world',
'Show a map of the world',
'Change player stat',
'Teleport to coordinates (5 0 0) or location name (\'Home\')',
'Spawn random monster'
]
self.commands = %w(character inventory rest look take use drop equip unequip go attack change help quit quit!)
self.aliases = %w(c i r l t u d e ue g a ch h q qq)
self.extras = %w(exit exit! x x fight f)
self.cmd_descriptions = [
'Display character information',
'Look in your inventory',
'Take a load off and regain HP',
'Look around your current location',
'Take item',
'Use item (in inventory or environment)',
'Drop item',
'Equip item',
'Unequip item',
'Go in a direction',
'Attack a monster',
'Change something',
'This help menu',
'Quit w/ confirmation (also exit/x)',
'Quit w/o confirmation (also exit!/xx)'
]
end
def evaluate(input)
case input
# Ctrl-D or empty command
when nil, ""
return
# real command
else
tokens = input.split
unless input_valid?(input)
return ERROR_COMMAND_INVALID
end
end
command = tokens.first.downcase
param1 = tokens[1]
param2 = tokens[2]
param3 = tokens[3]
# dev commands
if world.debug_mode
case command
when 'god', 'gd'
return world.player.god_mode = !world.player.god_mode
when 'beast', 'bs'
return world.player.beast_mode = !world.player.beast_mode
when 'vars', 'v'
world.print_vars
when 'list', 'ls'
if param1.nil?
puts ERROR_LIST_PARAM_MISSING
return DEBUG_LIST_PARAMS
else
return world.list(param1, param2)
end
when 'map', 'm'
world.print_map
when 'stat', 'st', 's'
if param1.nil?
puts ERROR_DEBUG_STAT_PARAM_MISSING
return DEBUG_STAT_PARAMS
else
case param1
when 'hp_cur'
unless param2.nil?
param2 = param2.to_i
if param2.is_a? Numeric
if param2 > 0
world.player.hp_cur = param2
end
end
end
when 'atk_lo'
unless param2.nil?
param2 = param2.to_i
if param2.is_a? Numeric
if param2 >= 0
world.player.atk_lo = param2
end
end
end
when 'atk_hi'
unless param2.nil?
param2 = param2.to_i
if param2.is_a? Numeric
if param2 >= 0
world.player.atk_hi = param2
end
end
end
when 'strength', 'str', 'st'
unless param2.nil?
param2 = param2.to_i
if param2.is_a? Numeric
if param2 >= 0
world.player.atk_lo = param2
world.player.atk_hi = param2
end
end
end
when 'dexterity', 'dex', 'd'
unless param2.nil?
param2 = param2.to_i
if param2.is_a? Numeric
if param2 >= 0
world.player.dexterity = param2
end
end
end
when 'rox', 'r', '$'
unless param2.nil?
param2 = param2.to_i
if param2.is_a? Numeric
if param2 >= 0
world.player.rox = param2
end
end
end
else
return ERROR_DEBUG_STAT_PARAM_INVALID
end
end
when 'spawn', 'sp'
cur_loc = world.location_by_coords(world.player.cur_coords)
cur_loc.populate_monsters(world.monsters, true)
return world.describe(cur_loc)
when 'teleport', 'tp'
if param1.nil?
return ERROR_DEBUG_TELEPORT_PARAMS_MISSING
else
if (param1.to_i.to_s == param1)
# we got at least an x coordinate
if (param2.to_i.to_s == param2)
# we got a y coordinate, too
x_coord = param1.to_i
y_coord = param2.to_i
# grab the z coordinate, if present, otherwise default to current level
z_coord = param3.to_i.to_s == param3 ? param3.to_i : world.player.cur_coords[:z]
# check to make sure new location exists
if world.location_by_coords({:x => x_coord, :y => y_coord, :z => z_coord})
world.player.cur_coords = {:x => x_coord, :y => y_coord, :z => z_coord}
else
return ERROR_DEBUG_TELEPORT_PARAMS_INVALID
end
else
# we only got an x coordinate
return ERROR_DEBUG_TELEPORT_PARAMS_NEEDED
end
else
# we got a place name instead, potentially
place_to_match = tokens[1..tokens.length].join(' ').downcase
locations = []
world.locations.each do |l|
locations << l.name.downcase
end
if locations.include?(place_to_match)
world.player.cur_coords = world.location_coords_by_name(place_to_match)
else
return ERROR_DEBUG_TELEPORT_PARAMS_INVALID
end
end
Animation::run({:phrase => '** TELEPORT! **', :speed => :insane})
return world.describe(world.location_by_coords(world.player.cur_coords))
end
end
end
# normal commands
case command
when 'character', 'c'
world.player.check_self(world.debug_mode)
when 'inventory', 'i'
if param1
world.player.inventory.describe_item(param1)
else
world.player.list_inventory
end
when 'rest', 'r'
world.player.rest(world)
when 'look', 'l'
if param1
world.describe_entity(world.location_by_coords(world.player.cur_coords), param1)
else
world.describe(world.location_by_coords(world.player.cur_coords))
end
when 'take', 't'
if param1.nil?
ERROR_TAKE_PARAM_MISSING
else
world.player.inventory.add_item(world.location_by_coords(world.player.cur_coords), param1)
end
when 'use', 'u'
if param1.nil?
ERROR_USE_PARAM_MISSING
else
item_name = param1
result = nil
location_inventory = world.location_by_coords(world.player.cur_coords).items
if location_inventory.map(&:name).include?(item_name)
location_inventory.each do |i|
if i.name.eql?(item_name)
if i.useable
result = i.use(world.player)
else
return ERROR_USE_PARAM_UNUSEABLE
end
end
end
elsif
player_inventory = world.player.inventory.items
if player_inventory.map(&:name).include?(item_name)
player_inventory.each do |i|
if i.name.eql?(item_name)
if i.useable
result = i.use(world.player)
else
return ERROR_USE_PARAM_UNUSEABLE
end
end
end
end
end
if result.nil?
ERROR_USE_PARAM_INVALID
else
case result[:type]
when 'move'
world.player.cur_coords = world.location_coords_by_name(result[:data])
world.describe(world.location_by_coords(world.player.cur_coords))
when 'move_dangerous'
world.player.take_damage(rand(0..2))
world.player.cur_coords = world.location_coords_by_name(result[:data])
world.describe(world.location_by_coords(world.player.cur_coords))
when 'dmg'
world.player.take_damage(result[:data])
return
when 'rest', 'health'
world.player.heal_damage(result[:data])
return
when 'action'
case result[:data]
when 'rest'
world.player.rest(world)
when 'map'
world.print_map
end
when 'arena'
arena = Arena.new({:world => world, :player => world.player})
arena.start
#return 'You enter the arena and fight some battles. It was cool, but not as cool as if it were actually implemented.'
when 'item'
world.location_by_coords(world.player.cur_coords).add_item(result[:data])
return
else
return
end
end
end
when 'drop', 'd'
if param1.nil?
ERROR_DROP_PARAM_MISSING
else
world.player.inventory.remove_item(param1)
end
when 'equip', 'e'
if param1.nil?
ERROR_EQUIP_PARAM_MISSING
else
world.player.inventory.equip_item(param1)
end
when 'unequip', 'ue'
if param1.nil?
ERROR_UNEQUIP_PARAM_MISSING
else
world.player.inventory.unequip_item(param1)
end
when 'go', 'g'
if param1.nil?
puts ERROR_GO_PARAM_MISSING
GO_PARAMS
else
direction = param1
if world.can_move?(direction)
world.player.go(world.locations, param1, world.sound)
world.location_by_coords(world.player.cur_coords).checked_for_monsters = false
world.describe(world.location_by_coords(world.player.cur_coords))
else
ERROR_GO_PARAM_INVALID
end
end
when 'attack', 'a', 'fight', 'f'
if param1.nil?
ERROR_ATTACK_PARAM_MISSING
else
monster_name = param1
if world.has_monster_to_attack?(monster_name)
monster = world.location_by_coords(world.player.cur_coords).monster_by_name(monster_name)
world.player.attack(world, monster)
else
ERROR_ATTACK_PARAM_INVALID
end
end
when 'change', 'ch'
if param1.nil?
puts ERROR_CHANGE_PARAM_MISSING
CHANGE_PARAMS
else
case param1
when 'name'
world.player.modify_name
else
ERROR_CHANGE_PARAM_INVALID
end
end
when 'help', 'h'
list_commands
when 'quit', 'exit', 'q', 'x'
puts "You sure you want to quit? (y/n): "
response = gets.chomp.downcase
if (response.eql?("y") || response.eql?("yes"))
puts QUIT_MESSAGE
return 'exit'
else
puts RESUME_MESSAGE
end
when 'quit!', 'exit!', 'qq', 'xx'
puts QUIT_MESSAGE
return 'exit'
else
return
end
end
private
def print_separator
puts "=================================================="
end
def list_commands
i = 0
print_separator
commands.each do |cmd|
puts " #{cmd.ljust(9)}, #{aliases[i].ljust(2)} -- #{cmd_descriptions[i]}"
i = i + 1
end
print_separator
if world.debug_mode
puts " DEBUG COMMANDS"
print_separator
i = 0
devcommands.each do |cmd|
puts " #{cmd.ljust(9)}, #{devaliases[i].ljust(2)} -- #{devcmd_descriptions[i]}"
i = i + 1
end
print_separator
end
end
def input_valid?(input)
tokens = input.split
command = tokens[0]
commands_and_aliases = commands | aliases | extras
if world.debug_mode
commands_and_aliases = commands_and_aliases | devcommands | devaliases | devextras
end
if commands_and_aliases.include?(command.downcase)
if tokens.size.between?(1,4)
return true
end
elsif tokens.empty?
return true
end
end
end
end