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authorFrederico Linhares <fred@linhares.blue>2022-05-23 10:33:51 -0300
committerFrederico Linhares <fred@linhares.blue>2022-05-23 10:33:51 -0300
commit056f43fd9c1217e3522e0715f035f339adab0d9a (patch)
tree09e709460dab542cd77a16e8ee5115d82fdd7b0d /lib
parente6b96284b24cef174ec963c5073e57eb4e95d96a (diff)
feat Create Animation
Diffstat (limited to 'lib')
-rw-r--r--lib/animation.rb58
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/animation.rb b/lib/animation.rb
new file mode 100644
index 0000000..7da2898
--- /dev/null
+++ b/lib/animation.rb
@@ -0,0 +1,58 @@
+# Copyright 2022 Frederico de Oliveira Linhares
+#
+# 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.
+
+module CandyGear
+ class Animation
+ Frame = Struct.new(:duration, :index);
+
+ attr_reader(:index);
+
+ def initialize(sequence, repeat = true)
+ @sequence = sequence;
+ @repeat = repeat;
+
+ self.reset();
+ end
+
+ def tick()
+ return @index if @sequence_is_over;
+
+ @current_time += 1;
+ frame = @sequence[@current_frame];
+
+ if @current_time >= frame.duration then
+ @current_time = 0;
+ @current_frame += 1;
+
+ if @current_frame >= @sequence.size() then
+ if @repeat then
+ @current_frame = 0;
+ else
+ @current_frame -= 1;
+ @sequence_is_over = true;
+ end
+ end
+ end
+
+ return @index = frame.index();
+ end
+
+ def reset()
+ @current_time = 0;
+ @current_frame = 0;
+ @index = @sequence[0].index;
+ @sequence_is_over = false;
+ end
+ end
+end