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authorFrederico Linhares <fred@linhares.blue>2023-05-30 15:23:26 -0300
committerFrederico Linhares <fred@linhares.blue>2023-05-30 15:23:26 -0300
commit341a669921023845ec55dd1f3c8738d16f37d3ec (patch)
treee4e7fefb6e776ede22ae69c2823da83aced3205c /lib/animation
parent7f7515f22517509fb93ee1615c72006dca6abb03 (diff)
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
Diffstat (limited to 'lib/animation')
-rw-r--r--lib/animation/discrete.rb58
-rw-r--r--lib/animation/frame_2d.rb31
2 files changed, 89 insertions, 0 deletions
diff --git a/lib/animation/discrete.rb b/lib/animation/discrete.rb
new file mode 100644
index 0000000..118bf0f
--- /dev/null
+++ b/lib/animation/discrete.rb
@@ -0,0 +1,58 @@
+# Copyright 2022-2023 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::Animation
+ class Discrete
+ Step = Struct.new(:duration, :obj);
+
+ def initialize(steps, looping=true)
+ @steps = steps.map { Step.new(_1[0], _1[1]); };
+ @looping = looping;
+
+ self.reset();
+ end
+
+ def tick()
+ step = @steps[@index];
+
+ return step.obj if @sequence_over;
+
+ @current_time += 1;
+
+ if @current_time >= step.duration then
+ @current_time = 0;
+ @index += 1;
+
+ if @index >= @steps.size then
+ if @looping then
+ @index = 0; # It is looping, go back to first step.
+ else
+ @index -= 1;
+ @sequence_over = true;
+ end
+ end
+ end
+
+ return step.obj;
+ end
+
+ def obj() = @steps[@index].obj;
+
+ def reset()
+ @index = 0;
+ @current_time = 0;
+ @sequence_over = false;
+ end
+ end
+end
diff --git a/lib/animation/frame_2d.rb b/lib/animation/frame_2d.rb
new file mode 100644
index 0000000..5d0b335
--- /dev/null
+++ b/lib/animation/frame_2d.rb
@@ -0,0 +1,31 @@
+# Copyright 2022-2023 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
+ module Animation
+ class Frame2D
+ def initialize(sprite, x, y, width, height)
+ @position = Vector4D.new(x, y, width, height);
+ @sprite = sprite;
+ end
+
+ def draw(view, pivot_x, pivot_y)
+ @sprite.draw(
+ view,
+ @position.x + pivot_x, @position.y + pivot_y,
+ @position.w, @position.h);
+ end
+ end
+ end
+end