Contents
Why do you need a physics engine for a game?
Physics provides a wonderful means for allowing a player to immerse themselves within a game. It makes sense that a mastery of a physics engine would be a powerful asset for any programmer to have at their disposal. Optimizations and specializations can be made at any time due to a deep understanding of the inner workings of the physics engine.
How to create a custom 2D physics engine?
Testing for whether or not two circles intersect is very simple: take the radii of the two circles and add them together, then check to see if this sum is greater than the distance between the two circles. An important optimization to make here is get rid of any need to use the square root operator:
What do you need to make a player in Unity?
If you want a super precise and custom shaped hitbox, Unity offers a “Polygon Collider 2D” component. It’s less efficient but allows you to set the shape exactly like you want. There is one last component to add on our player: a “Rigidbody 2D”. This will tell to the physics engine how to handle the game object.
How are physics engines used in Babylon.js?
Introduction Babylon.js has a plugin system for physics engines that enables the user to add physics interactions to the scene’s objects. Unlike the internal collision system, a physics engine calculates objects’ body dynamics and emulates “real-life” interactions between them.
How does networked physics work in a game?
Networked physics get interesting when the player interacts with other physically simulated objects, especiallywhen those objects push back and affect the motion of the player. So let’s add some more cubes to the simulation: Your browser does not support the video tag. When the player interacts with a cube it turns red.
How does a physics simulation work in Ode?
Here I’ve setup a simple simulation of a cube in the open source physics engine ODE. The player moves around by applying forces at its center of mass. The physics simulation takes this linear motion and calculates friction as the cube collides with the ground, inducing a rolling and tumbling motion.