Add shapes bouncing ball example

examples/README.md

@@ -72,6 +72,7 @@ Examples using raylib text functionality, including sprite fonts loading/generat
 
 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) |
+| ## | 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) |
+| 32 | [shapes_bouncing_ball](shapes/shapes_bouncing_ball.rb) | <img src="shapes/shapes_bouncing_ball.png" alt="shapes_bouncing_ball" width="80"> | ⭐️☆☆☆ | 2.5 | 2.5 | [Ray](https://github.com/raysan5) |

examples/shapes/shapes_bouncing_ball.rb

@@ -0,0 +1,72 @@
+# ******************************************************************************************
+#
+#   raylib [shapes] example - bouncing ball
+#
+#   Example originally created with raylib 2.5, last time updated with raylib 2.5
+#
+#   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) 2013-2023 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 - bouncing ball")
+
+ball_position = Raylib::Vector2.create(Raylib.get_screen_width / 2.0, Raylib.get_screen_height / 2.0)
+ball_speed = Raylib::Vector2.create(5.0, 4.0)
+ball_radius = 20
+
+pause = false
+frames_counter = 0
+
+Raylib.set_target_fps(60)
+# --------------------------------------------------------------------------------------
+
+# Main game loop
+until Raylib.window_should_close
+  # Update
+  # ----------------------------------------------------------------------------------
+  pause = !pause if Raylib.is_key_pressed(Raylib::KEY_SPACE)
+
+  if pause
+    frames_counter += 1
+  else
+    ball_position.x += ball_speed.x
+    ball_position.y += ball_speed.y
+
+    # Check walls collision for bouncing
+    ball_speed.x *= -1.0 if (ball_position.x >= (Raylib.get_screen_width - ball_radius)) || (ball_position.x <= ball_radius)
+    ball_speed.y *= -1.0 if (ball_position.y >= (Raylib.get_screen_height - ball_radius)) || (ball_position.y <= ball_radius)
+  end
+  # ----------------------------------------------------------------------------------
+
+  # Draw
+  # ----------------------------------------------------------------------------------
+  Raylib.begin_drawing
+  Raylib.clear_background(Raylib::RAYWHITE)
+  Raylib.draw_circle_v(ball_position, ball_radius.to_f, Raylib::MAROON)
+  Raylib.draw_text("PRESS SPACE to PAUSE BALL MOVEMENT", 10, Raylib.get_screen_height - 25, 20, Raylib::LIGHTGRAY)
+
+  # On pause, we draw a blinking message
+  Raylib.draw_text("PAUSED", 350, 200, 30, Raylib::GRAY) if pause && (frames_counter / 30) % 2 == 1
+
+  Raylib.draw_fps(10, 10)
+  Raylib.end_drawing
+  # ----------------------------------------------------------------------------------
+end
+
+# De-Initialization
+# --------------------------------------------------------------------------------------
+Raylib.close_window
+# --------------------------------------------------------------------------------------