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Original Source
- Original title: Database Extender
- Original author: Der Botaniker
- Original date: March 20, 2013
- Source thread: https://forums.rpgmakerweb.com/threads/database-extender.10693/
- Source forum path: Game Development Engines > Ruby Game System (RGSS) Scripts > RGSS3 Scripts (RMVX Ace)
Summary
Database Extender Thanks Hiino for the translation I think that the RPG Maker database is a bit of a pain since we cannot extend it. Hence, I am obligated to stay in the quite restrictive base system, and, in order to obtain cooler (and more specific) things I have to abuse of the database's commentary/note fields (and why not complete with the Typed Entities script, which isn't adapted to this kind of things... IN MY OPINION!) So I plagiarized Avygeil who had already been plagiarized by Grim and recoded a...
Archived First Post
Database Extender
Thanks Hiino for the translation
I think that the RPG Maker database is a bit of a pain since we cannot extend it. Hence, I am obligated to stay in the quite restrictive base system, and, in order to obtain cooler (and more specific) things I have to abuse of the database's commentary/note fields (and why not complete with the Typed Entities script, which isn't adapted to this kind of things... IN MY OPINION!)
So I plagiarized Avygeil who had already been plagiarized by Grim and recoded a database system for RM.
Concept
This system is based on the same idea as the one Grim used in his "Expressive Database", except it's a bit better (and more cleverly) coded. So firstly we are going to create tables in a blank script on top of Main. To achieve this, simply write:
class Swords < Database::Table # Here we will define our table's fieldsendTo add fields that characterize our table, we have to set their type and their name.
The script accepts the following types:
The goal is to describe every attribute of our tables. Of course, these exaples are quite naive and not finished.
How to fill our database
There are two ways of filling our database.
The first one is the most economic: after having defined our fields, we can use the "insert" command and pass it arguments. If said arguments aren't the right type the script will try to convert them, else it will set them a default value according to their type. Here is an example:
class Swords < Database::Table # Design of the table integer :id string :name string :description float :cost integer ower # Filling insert 0, "Excalibur", "A rare sword", 150.50, 120 insert 1, "Durendal", "A very rare sword", 200.20, 200 insert 2, "Dard", "Bilbon's, then Frodon's sword", 30.0, 50endclass Pokemon < Database::Table # Design of the table integer :id string :name string :description string :type integer ower # Filling insert 0, "Pikachu", "Ugly green mouse", "Electric", 10 insert 1, "Pichu", "Same as above", "Electric", 5 insert 2, "Doraemon", "thing", "Fire", 100 insert 3, "Sangoku", "Legendary Pokemon", "Rare", 1000 endAlso, it is possible to instantiate objects this way:
Personally, I prefer this way of doing, which allows me to separate my "design" and my filling. But it's possible to mix both techniques.
Access a table
We just have to writeatabase.tables[:Table_Name] or Database.Table_Name
For example: Database.Pokemon or Database.tables[okemon]
Then Database.Pokemon[0] will return the first record (Pikachu), but since the fields are stored inside an array, it is possible to use all the methods concerning arrays. However this part only addresses scripters, kind of like this whole script actually
Process the initial RPG Maker database
Since this script is modern and cool, it also allows for handling the RPG Maker database with the same primitives.
For example, to access the Actors table of the database, we will write: Database.VXACE_Actors, which returns the array of all the database's actors.
The accessible tables:
Associating with the Event Extender
If the Event Extender is already appended to your project, you have to place this script below it, so that its database overrides the Event Extender's.
The Design/Filling works the ame way as detailed above.
To access the database, it works as usual or as documented in the Event Extender (for example T[okemon] or T[:VXACE_Actors]).
Thanks to Hiino for his proofreading and translation!
Code
Permalink
If I update the script, it will usually be on this page: https://github.com/Funkywork/Scripts-rm/blob/master/VXAce/Extend-Database.rb
And the official Page : http://www.biloucorp.com/index.php?page=article&id_article=4
Thanks Hiino for the translation
I think that the RPG Maker database is a bit of a pain since we cannot extend it. Hence, I am obligated to stay in the quite restrictive base system, and, in order to obtain cooler (and more specific) things I have to abuse of the database's commentary/note fields (and why not complete with the Typed Entities script, which isn't adapted to this kind of things... IN MY OPINION!)
So I plagiarized Avygeil who had already been plagiarized by Grim and recoded a database system for RM.
Concept
This system is based on the same idea as the one Grim used in his "Expressive Database", except it's a bit better (and more cleverly) coded. So firstly we are going to create tables in a blank script on top of Main. To achieve this, simply write:
class Swords < Database::Table # Here we will define our table's fieldsendTo add fields that characterize our table, we have to set their type and their name.
The script accepts the following types:
- :string - Represents text data
- :integer - Represents an integer number
- :float - Represents a floating point number
- :boolean - Represents either true or false (a switch)
- olymorphic - Represents any RM data type
Code:
class Swords < Database::Table integer :id string :name string :description float :cost integer :powerendclass Pokemon < Database::Table integer :id string :name string :description string :type integer :powerendThe goal is to describe every attribute of our tables. Of course, these exaples are quite naive and not finished.
How to fill our database
There are two ways of filling our database.
The first one is the most economic: after having defined our fields, we can use the "insert" command and pass it arguments. If said arguments aren't the right type the script will try to convert them, else it will set them a default value according to their type. Here is an example:
class Swords < Database::Table # Design of the table integer :id string :name string :description float :cost integer ower # Filling insert 0, "Excalibur", "A rare sword", 150.50, 120 insert 1, "Durendal", "A very rare sword", 200.20, 200 insert 2, "Dard", "Bilbon's, then Frodon's sword", 30.0, 50endclass Pokemon < Database::Table # Design of the table integer :id string :name string :description string :type integer ower # Filling insert 0, "Pikachu", "Ugly green mouse", "Electric", 10 insert 1, "Pichu", "Same as above", "Electric", 5 insert 2, "Doraemon", "thing", "Fire", 100 insert 3, "Sangoku", "Legendary Pokemon", "Rare", 1000 endAlso, it is possible to instantiate objects this way:
Code:
Pokemon.new(id: 4, name: "Mew", description: "Blue monkey", type: "Plant", power: 999)Pokemon.new(id: 5, name: "Magicalichigo", description: "Looks like an Evoli", type: "Psy", power: 1)Access a table
We just have to writeatabase.tables[:Table_Name] or Database.Table_Name
For example: Database.Pokemon or Database.tables[okemon]
Then Database.Pokemon[0] will return the first record (Pikachu), but since the fields are stored inside an array, it is possible to use all the methods concerning arrays. However this part only addresses scripters, kind of like this whole script actually
Process the initial RPG Maker database
Since this script is modern and cool, it also allows for handling the RPG Maker database with the same primitives.
For example, to access the Actors table of the database, we will write: Database.VXACE_Actors, which returns the array of all the database's actors.
The accessible tables:
- VXACE_Actors
- VXACE_Classes
- VXACE_Skills
- VXACE_Items
- VXACE_Weapons
- VXACE_Armors
- VXACE_Enemies
- VXACE_States
- VXACE_Animations
- VXACE_Tilesets
- VXACE_CommonEvents
- VXACE_MapInfos
Associating with the Event Extender
If the Event Extender is already appended to your project, you have to place this script below it, so that its database overrides the Event Extender's.
The Design/Filling works the ame way as detailed above.
To access the database, it works as usual or as documented in the Event Extender (for example T[okemon] or T[:VXACE_Actors]).
Thanks to Hiino for his proofreading and translation!
Code
# Extend Database ~ Der Botaniker (Nuki)# http://www.biloucorp.com# Idea : Avygeil, Grim # Thanks to Hiino, Zangther (sexual motivation)# And special thanks to larabdubled#==============================================================================# ** Object#------------------------------------------------------------------------------# Generic behaviour#==============================================================================class Object #-------------------------------------------------------------------------- # * Bool casting #-------------------------------------------------------------------------- if defined?(Command) remove_constDatabase) def to_bool; (self != nil || self != false) end end #-------------------------------------------------------------------------- # * Polymorphic casting #-------------------------------------------------------------------------- def nothing; self; end #-------------------------------------------------------------------------- # * Get Instance values #-------------------------------------------------------------------------- def instance_values instances = Array.new instance_variables.each do |i| instances << instance_variable_get(i) end instances endend#==============================================================================# ** Database#------------------------------------------------------------------------------# Representation of an Abstract Database#==============================================================================module Database #============================================================================== # ** Types #------------------------------------------------------------------------------ # Implements the Type System #============================================================================== RPGDatas = [ "Actors", "Classes", "Skills", "Items", "Weapons", "Armors", "Enemies", "States", "Animations", "Tilesets", "CommonEvents", "MapInfos" ] module Type #-------------------------------------------------------------------------- # * Type Enum #-------------------------------------------------------------------------- Types = { string: [:to_s, ""], integer: [:to_i, 0], float: [:to_f, 0.0], boolean: [:to_bool, true], polymorphic: [:nothing, ""] } #-------------------------------------------------------------------------- # * String representation #-------------------------------------------------------------------------- def string(field_name) handle_fieldstring, field_name.to_sym) end alias :text :string #-------------------------------------------------------------------------- # * Integer representation #-------------------------------------------------------------------------- def integer(field_name) handle_fieldinteger, field_name.to_sym) end alias :int :integer #-------------------------------------------------------------------------- # * Floating point number representation #-------------------------------------------------------------------------- def float(field_name) handle_fieldfloat, field_name.to_sym) end #-------------------------------------------------------------------------- # * Boolean representation #-------------------------------------------------------------------------- def boolean(field_name) handle_fieldboolean, field_name.to_sym) end alias :bool :boolean #-------------------------------------------------------------------------- # * Polymorphic type representation #-------------------------------------------------------------------------- def polymorphic(field_name) handle_fieldpolymorphic, field_name.to_sym) end alias :free olymorphic #-------------------------------------------------------------------------- # * Type Coercion #-------------------------------------------------------------------------- def self.coercion(className) return :integer if className == Fixnum return :string if className == String return :float if className == Float return :boolean if className == TrueClass || className == FalseClass olymorphic end end #============================================================================== # ** Table #------------------------------------------------------------------------------ # Representation of an Abstract Table #============================================================================== class Table #-------------------------------------------------------------------------- # * Appends Type handler #-------------------------------------------------------------------------- extend Type Types = Type::Types #-------------------------------------------------------------------------- # * Singleton of Table #-------------------------------------------------------------------------- class << self #-------------------------------------------------------------------------- # * Public instance variables #-------------------------------------------------------------------------- attr_accessor :fields attr_accessor :classname #-------------------------------------------------------------------------- # * Field handling #-------------------------------------------------------------------------- def handle_field(type, name) @classname ||= self.to_s.to_sym @fields ||= Hash.new @fields[name] = type instance_variable_set("@#{name}".to_sym, Types[type][1]) sendattr_accessor, name) end #-------------------------------------------------------------------------- # * Inline insertion #-------------------------------------------------------------------------- def insert(*args) keys = @fields.keys hash = Hash[keys.zip(args)] self.new(hash) end end #-------------------------------------------------------------------------- # * Object initialization #-------------------------------------------------------------------------- def initialize(hash) hash.each do |key, value| type = self.class.fields[key] insertion = Types[type][1] insertion = value.send(Types[type][0]) if value.respond_to?(Types[type][0]) instance_variable_set("@#{key}".to_sym, insertion) end Database.tables[self.class.classname] ||= Array.new Database.tables[self.class.classname] << self end end #-------------------------------------------------------------------------- # * Singleton of Database #-------------------------------------------------------------------------- class << self #-------------------------------------------------------------------------- # * Public instance variables #-------------------------------------------------------------------------- attr_accessor :tables #-------------------------------------------------------------------------- # * API for tables #-------------------------------------------------------------------------- Database.tables = Hash.new #-------------------------------------------------------------------------- # * Method Missing #-------------------------------------------------------------------------- def method_missing(method, *args) tables[method] || (raise(NoMethodError)) end endend#==============================================================================# ** Junction with the Event Extender 4#==============================================================================if defined?(Command) #============================================================================== # ** T #------------------------------------------------------------------------------ # Database handling API #============================================================================== module T #-------------------------------------------------------------------------- # * Get a table #-------------------------------------------------------------------------- def [](name); Database.tables[name.to_sym]; end endend#==============================================================================# ** RPG::Module Mapping#------------------------------------------------------------------------------# Initial Database Mapping#==============================================================================Database::RPGDatas.each do |data| rpgStruct = load_data("Data/#{data}.rvdata2") instance = rpgStruct.find{|i| !i.nil?} instance = instance[1] if instance.is_a?(Array) Object.const_set( "VXACE_#{data}".to_sym, Class.new(Database::Table) do self.classname = "VXACE_#{data}".to_sym instance.instance_variables.each do |attr| classData = instance.sendinstance_variable_get, attr).class type = Database::Type.coercion(classData) self.send(type, attr.to_s[1..-1].to_sym) end rpgStruct.each do |rpgData| rpgData = rpgData[1] if rpgData.is_a?(Hash) self.insert(*rpgData.instance_values) end end )end
Permalink
If I update the script, it will usually be on this page: https://github.com/Funkywork/Scripts-rm/blob/master/VXAce/Extend-Database.rb
And the official Page : http://www.biloucorp.com/index.php?page=article&id_article=4
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