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Hello and welcome to this lecture.

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In this lecture we aren't going to be creating some logic for move in the puddle the moment the pad

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all his static so does not respond to movement.

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This is what the paddle looks like at the moment.

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So the little rectangle in blue there.

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So if you press your left and right mouse key you will notice there is no movement at all.

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That's because we have not implemented the logic that will control that movement.

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So this is what we'll do in this lecture.

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All right I have caught my javascript file here.

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So we go right down to where we defined the draw function.

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So this is where we are going to implement the logic for moving the paddle.

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So this is the core function so this is where we go to implement it.

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So we've got some more that code in here.

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So we are just going to implement it.

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Just underneath here with inside the drill function to save time I have written the piece of code already.

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So this is the first part of the code.

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This statement here.

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So this is the first part of the code.

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This same that if the right is press them is the right cursor or the right key on the keyboard is pressed

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the variable pad X will move the paddle 7 pixels.

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Kate remember we defined all these variables later on the cause saw powder X..

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This is what part of exis is the whiff is encumbers with minus the paddle with divided by two.

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Right so that's what that is so saying here that if the right key or cursings Press moved the pad all

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seven pixels.

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That's why there is a loss however or else what if the left is pressed more.

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The paddle minus seven in the opposite direction.

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So that's what that means.

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Okay so if the right is pressed move the paddle 7 pixels and if it's left move it 7 pixels the other

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direction.

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So let's say this and run this.

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I run the code so you can see while you are right so this is the paddle at the moment.

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So at the moment if I press the left.

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If you notice is pedalos disappear off the screen and if I press the right it disappears off the screen

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as well.

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Okay so let's try and control the paddle.

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Okay this is gone out of the.

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So we have to try and correct that so that it stays within the compass all right.

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I have implemented some extra things into the code to prevent the pad from leaving the canvas saw So

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this is what it is say.

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If the right cursor is pressed and this loop symbol's game is and and the pad all variable the variable

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padlocked X is the less than the can that's a minus.

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Me with the paddle and then move the pixels move the pad all 7 pixels.

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Okay so if I were pressing the right cursor and this condition is true.

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Move it to 7 pixels from the right.

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In that case it will not leave the compass because of this extra implementation here.

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Which I've said.

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If there were when you press the right cursor and the pad or the variable paddleboat X is less than

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the width of the canvas minus B with the paddle.

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If the condition is true then move with 7 pixels.

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Else it is not.

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If you press the left cursor instead and the pad all x variable is greater than the zero from the left

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as long as is greater than zero.

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Then you can move the pad all 7 pixels away which is mine of 7.

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The other in the other Derek.

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So what this court is saying is if the curse of the left curser here is pressed the paddle will move

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several pixels to the left.

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If we press the right key right cursor it will move several pixels from the right.

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The paddle may have seven pixels to the right.

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And if you press the left to a more seven pixels to the left or right.

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That's what Big code will do.

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Okay.

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We've also implemented extra things here to prevent the pad all from leave in the camp that's previously

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without this extra things we've implemented here.

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The paddle was leave in the comebacks.

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Okay.

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So what we're seeing now is that the the paddle x position is part of lexia is variable.

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We use it to move from 0 on the left to from the left side of the come from zero minus the with of the

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paddle.

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Okay.

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To the right size.

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Right so with that in place the count the paddles should not leave the compass.

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Okay.

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Now that we've done that to save save your work and we know we've got all the functions in place now

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so now if we try and go back to that you see that the paddle can be moved and it will not leave the

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screen you can see that it does not leave the comebacks no matter how far you press it to the left or

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how far you press it to the right.

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It does not leave the compass because of the front perimenopause.

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We have put in place to control that.

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All right so sit for this shot on the logic to move the panel.

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So we've got our game you know looking good.

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We now have to implement a game all of us so there's no point playing a game that one can not lose at

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some point in me you should lose the game.

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The purpose of the game.

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So we are going to create the mechanics for the game loss way is possible for someone to lose the game

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in the next lecture.