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Hello and welcome.

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In this lecture we will be implementing coalition detection.

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So far we have created are pricks.

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So at the moment when the ball bounces off the paddle and hits the brick nothing happens.

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So what we're going to do is implement some kind of solution detection so that when it does hit the

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brick it will break them or it will make them disappear from the campus.

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So what we are going to try and do here we are going to implement something to check the centre of the

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ball is colliding or touching with any of the bricks kinsell which is going to create some kind of detection

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there.

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So where by the ball the centre of the ball is touching or colliding with any and giving part of the

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bricks again to save a bit of time so you don't have to watch me type the code.

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I have already pre written the code here from line 86 to line ninety eight.

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So what we got at work done here is create some kind of coalition detection function that will loop

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through all the bricks and then compare every single breeks position with the ball's coordinate.

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So as each frame or each break is drawn it will compare the position on the X and position on the Y.

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All right so create it the function here called coalition detection again Wayne creative functions is

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always a good idea to name your function closely related to the function or the activity you want the

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function to perform.

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So I call this completion detection so it would be detecting coalition.

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So I've got a loop here.

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So Same here.

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You may recognize this look from our previous lectures as well.

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So this for loop is saying that it will check for the column the calon value 0.

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And if the column is less than the break call long count this here it all had one quick look.

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So it will loop to and add 1.

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She notices the count is low or has it or is less than the column count.

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It had one each time plus bloss means equal out one time elapsed true.

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The same applies for the row checks the row zero and f in this less than the brick row count.

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Again it adds one each time so he does that each time he goes through the loop so each iteration is

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timing all round them.

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Do that on to the specified amount or count for the column or row has been met or asked.

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I've created a variable here and giving it just the letter B.

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What the variable will do.

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The variable will be used to store the brick object in every iteration of the loop so the variable will

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store the brick object in every loop of the coalition detections So every time it goes through this

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floor trying to detect a coalition it will store the information in this variable.

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All right so we've given the value of this variable.

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He was sort of the breaks and then we've got an array here.

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Pass it inside said the array.

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We've got a column count and we've got another array here inside that we have the rule variable or count.

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So we're saying that if the value of b does state or C distrait status of the B variable is equal to

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1 and if the value of the x variable is greater than the B dot X and.

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X is less then B.

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X bloss 2 with the brick and Y is greater than the brick and is variable B.

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And why.

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And why is letting them be so if all these values are met the value of DIY.

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But it was too deep why mouse.

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Why.

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And then the value of the status of that will be forced to.

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So what this means is that the ex puts it when the exposition of the board is greater than the exposition

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of the brick.

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It'll draw the brick of the glue will detect the collusion.

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So when the exposition of the ball is less than expositional it brick blocks this whiff which is what

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I've done here.

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Then this happens.

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So when the y position of the ball at the y position of the ball is greater than the y position on the

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break.

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Then this happens.

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All right so the y position of the ball when the where position of the ball is less than the position

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of the break from the height.

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Then there is value because to mine is the.

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So here we have also what the State of the state has here.

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Checks.

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So when the status is set to zero that means the brick would have been hit by the ball.

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So we want the brick to disappear by this status's one.

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Then the brake is drawn on the screen than is the brick has not been hit yet but whereby this state

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or zero it has been hit by the ball and it all disappear from the Cam so we can also track the detection

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or the status of the coalition.

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So what happens here is that we use the state US property to check for coalition.

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The coalition has been detected.

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So if the brake is active the status is set to one.

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So we'll check to see if the coalition has happened.

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If a coalition occurs this status will be set back to zero.

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Okay so that means what that means is that the break will not because he's been hit it will not be painted

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on drawn on the compass.

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So this is how you will of date the coalition.

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This is how you would check for the coalition so any break in hit value set to zero.

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It doesn't get drawn again on the compass when the loop goes round.

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It is excluded from the loop.

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Alright that's it for this leg shot in this leg.

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Sure we create a function to do some collision detection.

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We all saw torched briefly on how to make the balls or the breaks disappear from the screen.

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Once they have been hit with the ball we all saw some kind of tracking to check for the status of the

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coalition so if a break has been hit the state is set to zero.

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So when the loop cause is not painted or create or drawn game on become mass so when the brick is active

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the status is one and then it can be created or drawn on the compass.

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Thank you so much for watching.

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Bye for now.