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Writer's pictureali mohamed

Bumping Cars

This week we will be continuing the 2D game we started earlier this year; yeah, it's been a while. Don't worry it's not gone, just delayed. The goal this week is to create the collision system of our game in the Unity engine. We have the simple sphere and pill from our last project, and we can control the pill like a car. Now, all we need to create is that bumping feeling. you might ask what that is, well, it's what makes a game fun. Have you seen those car games online, they are amazing; even though you crash, you still get that feeling of satisfaction. That's not the only reason to create the collision system; the system is ultimately what gives your game realism. Let's jump into it!




In Unity, one of the key functions we can use to detect collisions is OnCollisionEnter2D(). This function is called automatically whenever two colliders make contact in a 2D physics simulation. It allows us to define specific actions or behaviors when collisions occur. To begin, we need to attach this function to the object that should respond to collisions. In our case, it would be the pill-shaped object that the player controls. Within the OnCollisionEnter2D() function, we can write the desired code to handle the collision event. For example, if our pill collides with a wall or obstacle, we might want to play a sound effect, display a particle effect, or reduce the player's health. We can access information about the collision through the Collision2D parameter passed into the function, such as the objects involved in the collision and the point of contact.






To create more complex collision responses, we can utilize additional Unity components like Rigidbody2D and Collider2D. By adding a Rigidbody2D component to our pill object, we enable physics simulation, allowing it to respond to forces and collisions realistically. We also need to attach a Collider2D component to the objects that the pill can collide with, such as walls or other game objects. By combining OnCollisionEnter2D() with Rigidbody2D and Collider2D components, we can create dynamic and interactive collision systems in our game. The collisions will bring our game world to life, providing feedback and interactions that enhance the player's experience. Whether it's the satisfaction of crashing into obstacles or the realistic physics of bouncing off walls, the collision system plays a crucial role in making our game engaging and immersive. So, let's get our hands dirty and start implementing the OnCollisionEnter2D() function along with the necessary components in Unity.






With this collision system in place, we'll be one step closer to completing our 2D game and delivering an exciting and enjoyable experience to our players. Stay tuned for more updates as we continue to shape our game world with collision interactions!"

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