I am trying to create a simple 2D game where a ball is falling to the ground, influenced by some obstacles that will change the final position of the ball.
I am using MatterJS as a 2D physics engine but it is actually unpredictable, with the same parameters my ball is always at a different final position.
Is there a way to precompute the path the ball will have (instantly), save it into a variable and load it to get the exact same path whenever I need it? Or is there a way to predict the final position accurately?
I found a way to precompute instantly the path of the ball by calling manually Matter.Engine.update(engine) and storing the position of my ball for each frame.
Then i reset the position of my ball, set ball.isStatic = true; and move it manually at each frame:
Matter.Events.on(engine, "afterUpdate", () => {
if (positions.length > 0) {
Matter.Body.setPosition(ball, positions.shift());
}
});