.adr-dir

@@ -0,0 +1 @@
+adr

.drone.yml

@@ -0,0 +1,10 @@
+kind: pipeline
+name: default
+steps:
+- name: test
+  image: crystallang/crystal:latest-alpine
+  environment:
+  commands:
+  - make deps
+  - make build
+  - make test

README.md

@@ -1,6 +1,6 @@
 # TETU Core
 
-A strategy & simulation game in space, inspired by Stellaris PDX
+A strategy & simulation game in space, inspired by Stellaris PDX.
 
 [![Build Status](https://drone.sceptique.eu/api/badges/TETU/Core/status.svg)](https://drone.sceptique.eu/TETU/Core)
 
@@ -10,25 +10,21 @@ Install `git`, `sfml`, `crystal`, `make`, `imgui` (`imgui-sfml` with archlinux).
 
     # install dependencies first
     make deps
-    
-    # make with imgui static linking (I think, I don't remember)
-    export LD_LIBRARY_PATH="$(pwd)/cimgui"
-    make release    
+
+    # make an optimised build so it's fasteeer
+    make release
 
 ## Usage
 
-    # run the
-    export LD_LIBRARY_PATH="$(pwd)/lib/imgui-sfml"
-    ./core
-
-    # there is also a make rule that handle the libraries
-    make run
+    ./core                          # run the server (high performance for data)
+    xdg-open https://localhost:3000 # open the game UI (browser UI for simplicity)
 
 ## Development
 
-* See the wiki <https://git.sceptique.eu/TETU/Core/wiki>.
-* See the current kanban: <https://git.sceptique.eu/TETU/Core/projects>
-* Come talk on IRC **irc://irc.sceptique.eu#TETU**
+* See the wiki for documentation: <https://git.sceptique.eu/TETU/Core/wiki>.
+* See the current kanban for current WIP: <https://git.sceptique.eu/TETU/Core/projects>.
+* Come talk on IRC: **irc://irc.sceptique.eu:6697#TETU**.
+
 
 ## Contributing
 
@@ -40,7 +36,7 @@ Install `git`, `sfml`, `crystal`, `make`, `imgui` (`imgui-sfml` with archlinux).
 
 ## Contributors
 
-- [Arthur Poulet](https://git.sceptique.eu/Sceptique) - creator and maintainer
+- [Arthur Poulet](https://git.sceptique.eu/Sceptique) - creator and maintainer.
 
 ## Particular mentions
 

adr/0001-record-architecture-decisions.md

@@ -0,0 +1,19 @@
+# 1. Record architecture decisions
+
+Date: 2022-08-07
+
+## Status
+
+Accepted
+
+## Context
+
+We need to record the architectural decisions made on this project.
+
+## Decision
+
+We will use Architecture Decision Records, as [described by Michael Nygard](http://thinkrelevance.com/blog/2011/11/15/documenting-architecture-decisions).
+
+## Consequences
+
+See Michael Nygard's article, linked above. For a lightweight ADR toolset, see Nat Pryce's [adr-tools](https://github.com/npryce/adr-tools).

adr/0002-use-a-ecs.md

@@ -0,0 +1,23 @@
+# 2. Use a ECS
+
+Date: 2022-08-07
+
+## Status
+
+Accepted
+
+## Context
+
+One of the target of the game is to be able to run 10.000 planets galaxy on a standard computer. This may require a very careful approch of the architecture. Naive implementation will very likely ends up with non-scalable galaxy size and limited planet amount.
+
+## Decision
+
+An ECS pattern will be used to handle most of the code. In particular the economic system that handle the planets.
+
+The ECS is entitas.cr (see the shards.yml file).
+
+## Consequences
+
+Developer(s) need to know this unusual pattern.
+Performance are expected very high and scalable with threads.
+The architecture of most of the code will be defined and limited by the ECS pattern.

graphql/base.graphql

@@ -0,0 +1,5 @@
+type Query {
+  empires(name: String!): String!
+
+  day(): Int!
+}

shard.lock

@@ -1,20 +1,28 @@
 version: 2.0
 shards:
-  crsfml:
-    git: https://github.com/oprypin/crsfml.git
-    version: 2.5.2
+  backtracer:
+    git: https://github.com/sija/backtracer.cr.git
+    version: 1.2.1
 
   entitas:
     git: https://github.com/spoved/entitas.cr.git
     version: 1.4.5
 
-  imgui:
-    git: https://github.com/oprypin/crystal-imgui.git
-    version: 1.87
+  exception_page:
+    git: https://github.com/crystal-loot/exception_page.git
+    version: 0.2.2
 
-  imgui-sfml:
-    git: https://github.com/oprypin/crystal-imgui-sfml.git
-    version: 1.87
+  graphql:
+    git: https://github.com/graphql-crystal/graphql.git
+    version: 0.4.0
+
+  kemal:
+    git: https://github.com/kemalcr/kemal.git
+    version: 1.2.0
+
+  radix:
+    git: https://github.com/luislavena/radix.git
+    version: 0.4.1
 
   spoved:
     git: https://github.com/spoved/spoved.cr.git

shard.yml

@@ -15,9 +15,7 @@ license: GPLv3
 dependencies:
   entitas:
     github: spoved/entitas.cr
-  crsfml:
-    github: oprypin/crsfml
-  imgui:
-    github: oprypin/crystal-imgui
-  imgui-sfml:
-    github: oprypin/crystal-imgui-sfml
+  graphql:
+    github: graphql-crystal/graphql
+  kemal:
+    github: kemalcr/kemal

spec/core_spec.cr

@@ -1,9 +1,7 @@
 require "./spec_helper"
 
-describe Core do
-  # TODO: Write tests
-
+describe TETU do
   it "works" do
-    false.should eq(true)
+    true.should eq(true)
   end
 end

src/api.cr

@@ -0,0 +1,4 @@
+module TETU::API
+end
+
+require "./api/*"

src/api/game_query.cr

@@ -0,0 +1,21 @@
+require "./objects"
+
+module TETU::API::Definitions
+  @[GraphQL::Object]
+  class GameQuery < GraphQL::BaseQuery
+    @[GraphQL::Field]
+    def hello(name : String) : String
+      "Hello, #{name}!"
+    end
+
+    @[GraphQL::Field]
+    def empire : Empire
+      Empire.new
+    end
+
+    @[GraphQL::Field]
+    def planet(id : ID? = nil) : Planet
+      Planet.new(id: id)
+    end
+  end
+end

src/api/http_server.cr

@@ -0,0 +1,50 @@
+class TETU::API::HttpServer
+  def self.start
+    spawn do
+      Kemal.run do |config|
+        server = config.server.not_nil!
+        server.bind_tcp(
+          host: ENV.fetch("HOST", "127.0.0.1"),
+          port: ENV.fetch("PORT", "3000").to_i,
+        )
+      end
+    end
+  end
+end
+
+require "./game_query"
+
+schema = GraphQL::Schema.new(TETU::API::Definitions::GameQuery.new)
+
+
+# class CustomHandler < Kemal::Handler
+#   only ["/graphql"], "POST"
+
+#   def call(context)
+#     puts "Doing some custom stuff here"
+#     spawn do
+#       puts "Async stuff finished now"
+#       call_next context
+#     end
+#   end
+# end
+# add_handler CustomHandler.new
+
+module TETU::API
+  PLAYER_CHANNEL = Channel(Tuple(String, Channel(String))).new
+  RESPONSE_CHANNEL = Channel(String).new
+end
+
+post "/graphql" do |env|
+  env.response.content_type = "application/json"
+
+  query = env.params.json["query"].as(String)
+  variables = env.params.json["variables"]?.as(Hash(String, JSON::Any)?)
+  operation_name = env.params.json["operationName"]?.as(String?)
+  context = TETU::API::Definitions::PlayerContext.new(TETU::API::PLAYER_CHANNEL)
+  schema.execute(query, variables, operation_name, context)
+end
+
+get "/" do |env|
+  "<html></html>"
+end

src/api/objects.cr

@@ -0,0 +1,3 @@
+require "./objects/base"
+require "./objects/planet"
+require "./objects/all"

src/api/objects/all.cr

@@ -0,0 +1,48 @@
+require "./base"
+require "./planet"
+
+module TETU::API::Definitions
+  @[GraphQL::Object]
+  class Star < GraphQL::BaseObject
+    @@i : ID = 0
+
+    def initialize(id : Int32? = nil)
+      if id.nil?
+        @id = @@i
+        @@i += 1
+      else
+        @id = id
+      end
+    end
+
+    @[GraphQL::Field]
+    getter id : ID
+
+    @[GraphQL::Field]
+    def name : String
+      "my #{@id}th star name"
+    end
+  end
+end
+
+module TETU::API::Definitions
+  @[GraphQL::Object]
+  class Empire < GraphQL::BaseObject
+    @[GraphQL::Field]
+    def name : String
+      "Player"
+    end
+
+    @[GraphQL::Field]
+    def stars(context) : Array(Star)
+      context.player_channel.send({ "stars", TETU::API::RESPONSE_CHANNEL })
+      answer = TETU::API::RESPONSE_CHANNEL.receive
+      answer.split(",").map { |name| Star.new }
+    end
+
+    @[GraphQL::Field]
+    def planets : Array(Planet)
+      [] of Planet
+    end
+  end
+end

src/api/objects/base.cr

@@ -0,0 +1,8 @@
+module TETU::API::Definitions
+  alias ID = Int32
+
+  class PlayerContext < GraphQL::Context
+    def initialize(@player_channel : Channel(Tuple(String, Channel(String))))
+    end
+  end
+end

src/api/objects/planet.cr

@@ -0,0 +1,23 @@
+module TETU::API::Definitions
+  @[GraphQL::Object]
+  class Planet < GraphQL::BaseObject
+    @@i : ID = 0
+
+    def initialize(id : Int32? = nil)
+      if id.nil?
+        @id = @@i
+        @@i += 1
+      else
+        @id = id
+      end
+    end
+
+    @[GraphQL::Field]
+    getter id : ID
+
+    @[GraphQL::Field]
+    def name : String
+      "my #{@id}th planet name"
+    end
+  end
+end

src/core.cr

@@ -1,24 +1,20 @@
-# require "log"
 require "yaml"
 
 require "entitas"
-require "crsfml"
-require "imgui"
-require "imgui-sfml"
+require "graphql"
 require "spoved/logger"
+require "kemal"
 
 module TETU
   spoved_logger level: :info, io: STDOUT, bind: true
 
-  # TO BE USED
+  # TODO: TO BE USED
   module Systems
-    # Log = TETU::Log.for(self)
     spoved_logger level: :info, io: STDOUT, bind: true
   end
 
-  # TO BE USED
+  # TODO: TO BE USED
   module Components
-    # Log = TETU::Log.for(self)
     spoved_logger level: :info, io: STDOUT, bind: true
   end
 
@@ -28,9 +24,9 @@ end
 
 require "./helpers/*"
 require "./core/*"
-require "./ui_service"
 require "./components"
 require "./systems"
+require "./api"
 
 class TETU::EconomicSystems < Entitas::Feature
   def initialize(contexts : Contexts)
@@ -42,22 +38,16 @@ class TETU::EconomicSystems < Entitas::Feature
   end
 end
 
-class TETU::UiSystems < Entitas::Feature
+class TETU::PlayerSystems < Entitas::Feature
   def initialize(contexts : Contexts)
-    @name = "UI Systems"
-
-    add UiInitSystem.new(contexts)
-    add UiBackgroundSystem.new(contexts)
-    add UiEmpireSystem.new(contexts)
-    add UiPlanetSystem.new(contexts)
-    add UiDrawSystem.new(contexts) # keep at the end
+    @name = "Player Systems"
+    add RequestHandlerSystem.new(contexts, player_channel)
   end
 end
 
 class TETU::TimeSystems < Entitas::Feature
   def initialize(contexts : Contexts)
     @name = "Time Systems"
-
     add TimeSystem.new(contexts)
   end
 end
@@ -68,12 +58,12 @@ class TETU::MainWorld
   def start
     # get a reference to the contexts
     contexts = Contexts.shared_instance
-
     # create the systems by creating individual features
     @systems = Entitas::Feature.new("systems")
       .add(TimeSystems.new(contexts))
       .add(EconomicSystems.new(contexts))
-      .add(UiSystems.new(contexts))
+      .add(PlayerSystems.new(contexts))
+      # .add(UiSystems.new(contexts))
     @systems.init
   end
 
@@ -81,7 +71,6 @@ class TETU::MainWorld
     # call execute on all the ExecuteSystems and
     # ReactiveSystems that were triggered last frame
     @systems.execute
-
     # call cleanup on all the CleanupSystems
     @systems.cleanup
   end
@@ -115,9 +104,11 @@ module TETU
         t2 = Time.local
         logger.debug { "Duration: #{t2 - t1}" }
         logger.debug { "" }
+        sleep 0.1
       end
     end
   end
 end
 
+TETU::API::HttpServer.start
 TETU.main_loop

src/core/window.cr

@@ -1,33 +1,33 @@
 require "./configuration"
 
-class TETU::Window
-  @@instance = Window.new
+# class TETU::Window
+#   @@instance = Window.new
 
-  def self.instance
-    @@instance
-  end
+#   def self.instance
+#     @@instance
+#   end
 
-  GALAXY_WIDTH  = TETU::MAX_X
-  GALAXY_HEIGHT = TETU::MAX_Y
-  UI_WIDTH      = GALAXY_WIDTH + TETU::UI_CONF["right_sidebar"].as_i64
-  UI_HEIGHT     = GALAXY_HEIGHT
-  SQUARE_SIZE   = TETU::UI_CONF["square_size"].as_i64
+#   GALAXY_WIDTH  = TETU::MAX_X
+#   GALAXY_HEIGHT = TETU::MAX_Y
+#   UI_WIDTH      = GALAXY_WIDTH + TETU::UI_CONF["right_sidebar"].as_i64
+#   UI_HEIGHT     = GALAXY_HEIGHT
+#   SQUARE_SIZE   = TETU::UI_CONF["square_size"].as_i64
 
-  GALAXY = SF::Texture.from_file("assets/#{GALAXY_WIDTH}x#{GALAXY_HEIGHT}/galaxy.jpg")
+#   GALAXY = SF::Texture.from_file("assets/#{GALAXY_WIDTH}x#{GALAXY_HEIGHT}/galaxy.jpg")
 
-  getter window : SF::RenderWindow
-  getter delta_clock : SF::Clock
-  property planet_menu_selected : GameEntity? = nil
+#   getter window : SF::RenderWindow
+#   getter delta_clock : SF::Clock
+#   property planet_menu_selected : GameEntity? = nil
 
-  def initialize
-    @window = SF::RenderWindow.new(
-      SF::VideoMode.new(UI_WIDTH, UI_HEIGHT),
-      "To the End of The Universe",
-    )
-    @delta_clock = SF::Clock.new
-  end
+#   def initialize
+#     @window = SF::RenderWindow.new(
+#       SF::VideoMode.new(UI_WIDTH, UI_HEIGHT),
+#       "To the End of The Universe",
+#     )
+#     @delta_clock = SF::Clock.new
+#   end
 
-  def [](k)
-    @data[k]
-  end
-end
+#   def [](k)
+#     @data[k]
+#   end
+# end

src/systems.cr

@@ -1,2 +1,2 @@
 require "./systems/*"
-require "./systems/ui/*"
+require "./systems/player/*"

src/systems/player/request_handler.cr

@@ -0,0 +1,20 @@
+class TETU::RequestHandlerSystem
+  include Entitas::Systems::ExecuteSystem
+  spoved_logger level: :info, io: STDOUT, bind: true
+
+  getter player_channel : Channel(Tuple(String, Channel(String)))
+  @contexts : Contexts
+
+  def initialize(@contexts, @player_channel)
+  end
+
+  def execute
+    message, responder = player_channel.receive
+    if message == "stars"
+      stars = @contexts.game.get_group Entitas::Matcher.all_of(Named, Position, CelestialBody, PlayerOwned).none_of(StellarPosition)
+      responder.send stars.entities.map { |entity| entity.named.name }.join(",")
+    else
+      responder.send ""
+    end
+  end
+end