How to create collision detection function in MDN?
To kick this all off we want to create a collision detection function that will loop through all the bricks and compare every single brick’s position with the ball’s coordinates as each frame is drawn. For better readability of the code we will define the b variable for storing the brick object in every loop of the collision detection:
How are rectangles used in collision detection coding?
Even if your objects are not actually rectangles, a common technique is to use a rectangle to represent your object anyway. Think of games like Mario or Sonic the Hedgehog- in those types of games, an invisible rectangle (called a hitbox) that surrounds the player is used for collision detection.
When to change the direction of collision detection?
For better readability of the code we will define the b variable for storing the brick object in every loop of the collision detection: If the center of the ball is inside the coordinates of one of our bricks, we’ll change the direction of the ball.
How to write collision detection in game development?
Let’s write that down in code: Add the above block to your code, below the keyUpHandler () function. The above code will work as desired and the ball changes its direction. The problem is that the bricks are staying where they are. We have to figure out a way to get rid of the ones we’ve already hit with the ball.
How to check for collision in collision detection?
Now we need to involve the brick status property in the collisionDetection () function: if the brick is active (its status is 1) we will check whether the collision happens; if a collision does occur we’ll set the status of the given brick to 0 so it won’t be painted on the screen. Update your collisionDetection () function as indicated below:
How to update collisiondetection function in JavaScript?
Update your collisionDetection () function as indicated below: The last thing to do is to add a call to the collisionDetection () function to our main draw () function. Add the following line to the draw () function, just below the drawPaddle () call: The collision detection of the ball is now checked on every frame, with every brick.