require "opal"
require "fileutils"
class AuthorEngine
class OpalExporter
def initialize(project_file:)
@project_file = project_file
save(export)
end
def project_name
name = File.basename(@project_file, ".authorengine")
return name.split("_").map {|n| n.capitalize}.join(" ")
end
# Rebuild opal runtime of it doesn't exist or if its out of date
def build_opal?
opal_runtime = "#{export_directory}/js/runtime.js"
if File.exists?(opal_runtime)
file = File.open(opal_runtime)
version = file.first.gsub("/", "").strip
file.close
Opal::VERSION != version
else
true
end
end
def stylesheet
%{
@font-face { font-family: Connection; src: url('fonts/Connection.otf'); }
@font-face { font-family: ConnectionBold; src: url('fonts/ConnectionBold.otf'); }
body {
margin: 0;
padding: 0;
background: #222;
}
#canvas {
display: block;
margin: 0 auto;
// cursor: none;
}
#loading {
font-family: Connection, sans serif;
color: white;
text-align: center;
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
width: 50%;
height: 30%;
margin: auto;
}
}
end
def project
%{
var projectString = `#{File.open(@project_file).read}`;
}
end
def game_runtime
program = %{
# require "opal"
# require "opal-parser"
require "author_engine/opal"
`var callback = function(){
\#{AuthorEngine::GameRunner.new(`projectString`).show}
};
if (
document.readyState === "complete" ||
(document.readyState !== "loading" && !document.documentElement.doScroll)
) {
callback();
} else {
document.addEventListener("DOMContentLoaded", callback);
}`
}
puts "Transpiling to JavaScript using Opal..."
opal_builder = nil
if build_opal?
puts " Building Opal runtime..."
opal_builder = Opal::Builder.new
opal_builder.build("opal")
opal_builder.build("opal-parser")
else
puts " Skipping Opal runtime. Already exists as v#{Opal::VERSION}..."
end
puts " Building AuthorEngine runtime with project..."
game_builder = Opal::Builder.new
base_path = File.expand_path("../../../..", __FILE__)
game_builder.append_paths("#{base_path}")
game_builder.build_require("author_engine/opal")
opal_builder_js = nil
if opal_builder
opal_runtime_js = opal_builder.build_str("", "(inline)").to_s
end
author_engine_js = game_builder.build_str(program, "(inline)").to_s
return {opal_runtime: opal_runtime_js, author_engine_runtime: author_engine_js}
end
def template
%{
#{project_name} | AuthorEngine
Loading...
}
end
def export
template
end
def export_directory
filename = File.basename(@project_file)
directory = File.expand_path(@project_file.sub(filename, ''))
name = filename.sub(".authorengine", "")
return "#{directory}/#{name}"
end
def save(string)
filename = File.basename(@project_file)
directory = File.expand_path(@project_file.sub(filename, ''))
name = filename.sub(".authorengine", "")
export_path = "#{directory}/#{name}"
unless File.exists?(export_path)
Dir.mkdir(export_path)
end
unless File.exists?("#{export_path}/fonts")
Dir.mkdir("#{export_path}/fonts")
end
unless File.exists?("#{export_path}/js")
Dir.mkdir("#{export_path}/js")
end
puts "Saving to \"#{export_path}\""
File.open("#{export_path}/#{name}.html", "w") do |file|
file.write(string)
end
hash = game_runtime
if hash[:opal_runtime]
File.open("#{export_path}/js/runtime.js", "w") do |file|
file.write("// #{Opal::VERSION}\n")
file.write(hash[:opal_runtime])
end
end
File.open("#{export_path}/game.js", "w") do |file|
file.write(project)
end
File.open("#{export_path}/js/author_engine.js", "w") do |file|
file.write(hash[:author_engine_runtime])
end
fonts_path = "#{File.expand_path("../../../../../", __FILE__)}/assets/fonts"
font_files = Dir.glob("#{fonts_path}/*")
font_files.each do |file|
FileUtils.cp(file, "#{export_path}/fonts/#{File.basename(file)}")
end
puts "Saved."
end
end
end