Add basic shapes example

examples/README.md

@@ -67,3 +67,11 @@ Examples using raylib text functionality, including sprite fonts loading/generat
 | 74 | [text_format_text](text/text_format_text.rb)         | <img src="text/text_format_text.png" alt="text_format_text" width="80"> | ⭐️☆☆☆ | 1.1 | 3.0 | [Ray](https://github.com/raysan5) |
 | 75 | [text_input_box](text/text_input_box.rb)             | <img src="text/text_input_box.png" alt="text_input_box" width="80"> | ⭐️⭐️☆☆ | 1.7 | 3.5 | [Ray](https://github.com/raysan5) |
 | 76 | [text_writing_anim](text/text_writing_anim.rb)       | <img src="text/text_writing_anim.png" alt="text_writing_anim" width="80"> | ⭐️⭐️☆☆ | 1.4 | 1.4 | [Ray](https://github.com/raysan5) |
+
+## Shapes
+
+Examples using raylib shapes drawing functionality.
+
+| ## | example                                              | image  | difficulty<br>level | version<br>created | last version<br>updated | original<br>developer |
+|----|------------------------------------------------------|--------|:-------------------:|:------------------:|:------------------:|:----------|
+| 31 | [shapes_basic_shapes](shapes/shapes_basic_shapes.rb) | <img src="shapes/shapes_basic_shapes.png" alt="shapes_basic_shapes" width="80"> | ⭐️☆☆☆ | 1.0 | **4.0** | [Ray](https://github.com/raysan5) |

examples/shapes/shapes_basic_shapes.rb

@@ -0,0 +1,83 @@
+# ******************************************************************************************
+#
+#   raylib [shapes] example - Draw basic shapes 2d (rectangle, circle, line...)
+#
+#   Example originally created with raylib 1.0, last time updated with raylib 4.2
+#
+#   Example ported to Ruby by Wilson Silva (@wilsonsilva). Works with Raylib 4.5
+#
+#   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+#   BSD-like license that allows static linking with closed source software
+#
+#   Copyright (c) 2014-2023 Ramon Santamaria (@raysan5)
+#
+# ******************************************************************************************
+
+require 'bundler/setup'
+require 'raylib'
+
+# Initialization
+# --------------------------------------------------------------------------------------
+SCREEN_WIDTH = 800
+SCREEN_HEIGHT = 450
+
+Raylib.init_window(SCREEN_WIDTH, SCREEN_HEIGHT, "raylib [shapes] example - basic shapes drawing")
+
+rotation = 0.0
+
+Raylib.set_target_fps(60) # Set our game to run at 60 frames-per-second
+# --------------------------------------------------------------------------------------
+
+# Main game loop
+until Raylib.window_should_close # Detect window close button or ESC key
+  # Update
+  # ----------------------------------------------------------------------------------
+  rotation += 0.2
+  # ----------------------------------------------------------------------------------
+
+  # Draw
+  # ----------------------------------------------------------------------------------
+  Raylib.begin_drawing
+  Raylib.clear_background(Raylib::RAYWHITE)
+
+  Raylib.draw_text("some basic shapes available on raylib", 20, 20, 20, Raylib::DARKGRAY)
+
+  # Circle shapes and lines
+  Raylib.draw_circle(SCREEN_WIDTH/5, 120, 35, Raylib::DARKBLUE)
+  Raylib.draw_circle_gradient(SCREEN_WIDTH/5, 220, 60, Raylib::GREEN, Raylib::SKYBLUE)
+  Raylib.draw_circle_lines(SCREEN_WIDTH/5, 340, 80, Raylib::DARKBLUE)
+
+  # Rectangle shapes and lines
+  Raylib.draw_rectangle(SCREEN_WIDTH/4*2 - 60, 100, 120, 60, Raylib::RED)
+  Raylib.draw_rectangle_gradient_h(SCREEN_WIDTH/4*2 - 90, 170, 180, 130, Raylib::MAROON, Raylib::GOLD)
+  Raylib.draw_rectangle_lines(SCREEN_WIDTH/4*2 - 40, 320, 80, 60, Raylib::ORANGE)
+
+  # Triangle shapes and lines
+  Raylib.draw_triangle(
+    Raylib::Vector2.create(SCREEN_WIDTH/4.0 * 3.0, 80.0),
+    Raylib::Vector2.create(SCREEN_WIDTH/4.0 * 3.0 - 60.0, 150.0),
+    Raylib::Vector2.create(SCREEN_WIDTH/4.0 * 3.0 + 60.0, 150.0),
+    Raylib::VIOLET
+  )
+
+  Raylib.draw_triangle_lines(
+    Raylib::Vector2.create(SCREEN_WIDTH/4.0 * 3.0, 160.0),
+    Raylib::Vector2.create(SCREEN_WIDTH/4.0 * 3.0 - 20.0, 230.0),
+    Raylib::Vector2.create(SCREEN_WIDTH/4.0 * 3.0 + 20.0, 230.0),
+    Raylib::DARKBLUE
+  )
+
+  # Polygon shapes and lines
+  Raylib.draw_poly(Raylib::Vector2.create(SCREEN_WIDTH/4.0 * 3, 330), 6, 80, rotation, Raylib::BROWN)
+  Raylib.draw_poly_lines(Raylib::Vector2.create(SCREEN_WIDTH/4.0 * 3, 330), 6, 90, rotation, Raylib::BROWN)
+  Raylib.draw_poly_lines_ex(Raylib::Vector2.create(SCREEN_WIDTH/4.0 * 3, 330), 6, 85, rotation, 6, Raylib::BEIGE)
+
+  Raylib.draw_line(18, 42, SCREEN_WIDTH - 18, 42, Raylib::BLACK)
+  Raylib.end_drawing
+  # ----------------------------------------------------------------------------------
+end
+
+# De-Initialization
+# --------------------------------------------------------------------------------------
+Raylib.close_window # Close window and OpenGL context
+# --------------------------------------------------------------------------------------