1 files changed, 113 insertions, 0 deletions
diff --git a/test/src/mode/demo.rb b/test/src/mode/demo.rb
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+++ b/test/src/mode/demo.rb
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+# 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 Mode
+  class Demo
+    CAMERA_ROTATION_SPEED = Math::PI/45;
+    BOX_ROTATION_SPEED = Math::PI/360;
+    TRANSLATION_SPEED = 0.5;
+
+    def initialize()
+      texture = CandyGear::Texture.from_image("textures/color_texture.qoi");
+      mesh = CandyGear::Mesh.new("meshes/cube.cgmesh");
+      font = CandyGear::Font.new("/usr/share/fonts/TTF/HanaMinA.ttf", 30);
+      japanese_text = CandyGear::Texture.from_text(
+        font, "こんにちは世界!");
+      english_text = CandyGear::Texture.from_text(
+        font, "The quick brown fox jumps");
+
+      @color = CandyGear::Vector3D.new(0.8, 0.2, 0.2);
+      @model = CandyGear::Model.new(mesh, texture);
+      @sprite = CandyGear::Sprite.new(
+        texture, CandyGear::Vector4D.new(0, 0, 1.0, 1.0));
+      @rectangle = CandyGear::Vector4D.new(103.0, 1.0, 100.0, 100.0);
+      @sprite_position = CandyGear::Vector4D.new(1.0, 1.0, 100.0, 100.0);
+      @japanese_text_sprite = CandyGear::Sprite.new(
+        japanese_text, CandyGear::Vector4D.new(0, 0, 1.0, 1.0));
+      @japanese_text_position = CandyGear::Vector4D.new(
+        204.0, 1.0, japanese_text.width, japanese_text.height);
+      @english_text_sprite = CandyGear::Sprite.new(
+        english_text, CandyGear::Vector4D.new(0, 0, 1.0, 1.0));
+      @english_text_position = CandyGear::Vector4D.new(
+        204.0, japanese_text.height + 2.0,
+        english_text.width, english_text.height);
+
+      @instances = [
+        CandyGear::Vector3D.new(5.0, 0.0, 0.0),
+        CandyGear::Vector3D.new(-5.0, 0.0, 0.0),
+        CandyGear::Vector3D.new(0.0, 5.0, 0.0),
+        CandyGear::Vector3D.new(0.0, -5.0, 0.0),
+        CandyGear::Vector3D.new(0.0, 0.0, 5.0),
+        CandyGear::Vector3D.new(0.0, 0.0, -5.0)
+      ];
+      @instances_rotation = CandyGear::Rotation3D.new(0.0, 0.0, 0.0);
+
+      @camera_position = CandyGear::Vector3D.new(0.0, 0.0, 0.0);
+      @camera_rotation = CandyGear::Rotation3D.new(0.0, 0.0, 0.0);
+
+      color = CandyGear::Vector3D.new(0.12, 0.12, 0.18);
+      @view1 = CandyGear::View2D.new(
+        CandyGear::Vector4D.new(0, 0, 1280, 240), 640, 120);
+      @view2 = CandyGear::View3D.new(
+        CandyGear::Vector4D.new(0, 240, 1280, 480), 1280, 480);
+      CandyGear.views = [@view1, @view2];
+
+      @view2.camera_position = @camera_position;
+      @view2.camera_rotation = @camera_rotation;
+    end
+
+    def key_down(key)
+      case key
+      when CandyGear::Key::I
+        @camera_rotation.rotate(-CAMERA_ROTATION_SPEED, 0.0);
+      when CandyGear::Key::K
+        @camera_rotation.rotate(CAMERA_ROTATION_SPEED, 0.0);
+      when CandyGear::Key::J
+        @camera_rotation.rotate(0.0, CAMERA_ROTATION_SPEED);
+      when CandyGear::Key::L
+        @camera_rotation.rotate(0.0, -CAMERA_ROTATION_SPEED);
+      when CandyGear::Key::E
+        @camera_position.translate(
+          CandyGear::Vector3D.new(
+            0.0, 0.0, -TRANSLATION_SPEED), @camera_rotation);
+      when CandyGear::Key::D
+        @camera_position.translate(
+          CandyGear::Vector3D.new(
+            0.0, 0.0, TRANSLATION_SPEED), @camera_rotation);
+      when CandyGear::Key::S
+        @camera_position.translate(
+          CandyGear::Vector3D.new(
+            -TRANSLATION_SPEED, 0.0, 0.0), @camera_rotation);
+      when CandyGear::Key::F
+        @camera_position.translate(
+          CandyGear::Vector3D.new(
+            TRANSLATION_SPEED, 0.0, 0.0), @camera_rotation);
+      end
+    end
+
+    def key_up(key)
+    end
+
+    def tick()
+      @sprite.draw(@view1, @sprite_position);
+      @japanese_text_sprite.draw(@view1, @japanese_text_position);
+      @english_text_sprite.draw(@view1, @english_text_position);
+      @instances_rotation.rotate(0.0, BOX_ROTATION_SPEED);
+      @rectangle.draw_rectangle(@view1, @color);
+      @instances.each do |i|
+        @model.draw(i, @instances_rotation);
+      end
+    end
+  end
+end