Add full source code of the finished (and revised code) Breakout example. Not set up for cross-platform compilation as it has irrKlang and FreeType dependency, but at least source code is available online (and can be referenced from Breakout chapters).

src/7.in_practice/3.2d_game/0.full_source/ball_object.cpp

@@ -0,0 +1,54 @@
+/******************************************************************
+** This code is part of Breakout.
+**
+** Breakout is free software: you can redistribute it and/or modify
+** it under the terms of the CC BY 4.0 license as published by
+** Creative Commons, either version 4 of the License, or (at your
+** option) any later version.
+******************************************************************/
+#include "ball_object.h"
+
+
+BallObject::BallObject() 
+    : GameObject(), Radius(12.5f), Stuck(true), Sticky(false), PassThrough(false)  { }
+
+BallObject::BallObject(glm::vec2 pos, float radius, glm::vec2 velocity, Texture2D sprite)
+    : GameObject(pos, glm::vec2(radius * 2.0f, radius * 2.0f), sprite, glm::vec3(1.0f), velocity), Radius(radius), Stuck(true), Sticky(false), PassThrough(false) { }
+
+glm::vec2 BallObject::Move(float dt, unsigned int window_width)
+{
+    // If not stuck to player board
+    if (!this->Stuck)
+    {
+        // Move the ball
+        this->Position += this->Velocity * dt;
+        // Then check if outside window bounds and if so, reverse velocity and restore at correct position
+        if (this->Position.x <= 0.0f)
+        {
+            this->Velocity.x = -this->Velocity.x;
+            this->Position.x = 0.0f;
+        }
+        else if (this->Position.x + this->Size.x >= window_width)
+        {
+            this->Velocity.x = -this->Velocity.x;
+            this->Position.x = window_width - this->Size.x;
+        }
+        if (this->Position.y <= 0.0f)
+        {
+            this->Velocity.y = -this->Velocity.y;
+            this->Position.y = 0.0f;
+        }
+    }
+    return this->Position;
+}
+
+// Resets the ball to initial Stuck Position (if ball is outside window bounds)
+void BallObject::Reset(glm::vec2 position, glm::vec2 velocity)
+{
+    this->Position = position;
+    this->Velocity = velocity;
+    this->Stuck = true;
+    this->Sticky = false;
+    this->PassThrough = false;
+
+}