feat Create 2D animations

* Rakefile: Add subfolders to the lib directory.
* lib/animation/discrete.rb: Create a class for discrete animations.
This class needs tests.
* lib/animation/frame_2d.rb: Create a 2D frame to be used with discrete
animations

1 files changed, 6 insertions, 2 deletions

diff --git a/Rakefile b/Rakefile
index c2e67d2..042eac2 100644
--- a/Rakefile
+++ b/Rakefile
@@ -40,7 +40,7 @@ CPP_FILES = FileList[
 CPP_OBJS = CPP_FILES.ext('.o')
 
 RB_LIBS = FileList[
-  'lib/*.rb'
+  'lib/**/*.rb'
 ]
 
 GLSL_FILES = FileList[
@@ -160,7 +160,11 @@ task install: :build do
 
   # Install libs
   `install -d #{destdir}#{DATA_DIR}/lib`
-  RB_LIBS.each {`install #{_1} #{destdir}#{DATA_DIR}/lib`}
+  RB_LIBS.each do |path|
+    subdir = /(\/[[:alnum:]]+)\//.match(path)&.captures&.at(0)
+    `install -d #{destdir}#{DATA_DIR}/lib#{subdir}` unless subdir.nil?
+    `install #{path} #{destdir}#{DATA_DIR}/lib#{subdir}`
+  end
 end
 
 task default: %[build]