mnit: intro the numbers module

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/mnit/mnit.nit b/lib/mnit/mnit.nit
index e3d1102..2afb92c 100644 (file)
--- a/lib/mnit/mnit.nit
+++ b/lib/mnit/mnit.nit
@@ -20,3 +20,4 @@ module mnit
 import app
 import opengles1
 import assets
+import numbers

diff --git a/lib/mnit/numbers.nit b/lib/mnit/numbers.nit
new file mode 100644 (file)
index 0000000..827b4cc
--- /dev/null
+++ b/lib/mnit/numbers.nit
@@ -0,0 +1,52 @@
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2014 Alexis Laferrière <alexis.laf@xymus.net>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Helper services to draw numbers on screen
+module numbers
+
+import assets
+
+# A set of images to draw numbers
+class NumberImages
+
+       # Images from 0 to 9
+       var imgs: Array[Image]
+
+       private init(imgs: Array[Image]) do self.imgs = imgs
+end
+
+redef class App
+       # Load a `NumberImages` from the assets
+       fun load_numbers(path: String): NumberImages
+       do
+               var imgs = new Array[Image]
+               for d in [0..9] do imgs.add(load_image(path.replace("#", d.to_s)))
+               return new NumberImages(imgs)
+       end
+end
+
+redef class Display
+       fun blit_number(imgs: NumberImages, number: Int, x, y: Int)
+       do
+               var str = number.to_s
+               for c in str.chars do
+                       var d = c.ascii-'0'.ascii
+                       assert d >= 0 and d <= 9
+                       blit(imgs.imgs[d], x, y)
+                       x += imgs.imgs[d].width
+               end
+       end
+end