ball bounce off the brick

[uknowhoiam]

What is it you are trying to achieve?
I want the ball to bounce off the brick


What is the problem you are having?
the ball will not bounce off the bricks

Describe what you have tried to solve this problem

Turing:

if ballx >= brickx and ballx <= brickx2 and bally = bricky2  then         ypos := 10 - gravity     end if

That is what i have done

Post any relevant code (You may choose to attach the file instead of posting the code if it is too long)

Turing:

View.Set ("graphics:650;400,offscreenonly") var ballx, bally, xpos, xpos2, ypos, gravity : real var line, Colour, face, brick_colour, brickx, bricky, brickx2, bricky2 : int var keys : array char of boolean Colour := 119 face := 255 line := 50 ballx := line + maxx - 100 bally := line xpos := 1 xpos2 := -1 ypos := 8 gravity := .25 brickx := Rand.Int (0, maxx - 10) brickx2 := brickx + 40 bricky := Rand.Int (10, 170) bricky2 := bricky + 15 brick_colour := brown procedure Player     drawfilloval (round (ballx), round (bally), 10, 10, Colour)     %body     drawoval (round (ballx), round (bally), 10, 10, face)     %body outline     drawfilloval (round (ballx) - 3, round (bally) + 2, 1, 1, face)     %left eye     drawfilloval (round (ballx) + 3, round (bally) + 2, 1, 1, face)     %right eye     drawfillarc (round (ballx), round (bally) - 2, 2, 4, 180, 360, face)     %smile end Player procedure Brick     drawfillbox (brickx, bricky, brickx2, bricky2, brick_colour) end Brick loop     Brick     Player     View.Update     delay (10)     cls     ballx -= xpos     bally += ypos     ypos -= gravity     if ballx >= brickx and ballx <= brickx2 and bally = bricky2 + 25 then         ypos := 10 - gravity     end if     if bally <= 15 then         ypos := 10 - gravity     end if     if ballx > maxx + 10 then         ballx := -10     end if     if ballx < -10 then         ballx := maxx + 10     end if     if xpos >= 3 then         xpos := 2     end if     if xpos <= -3 then         xpos := -2     end if     Input.KeyDown (keys)     if keys (KEY_RIGHT_ARROW) then         xpos -= 1     end if     if keys (KEY_LEFT_ARROW) then         xpos += 1     end if end loop %Just test it your self

Please specify what version of Turing you are using
<Answer Here>
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[Tony]

I'm not exactly sure what those variables are, but

code:

and bally = bricky2

sounds awfully specific.

[TokenHerbz]

hey bud, yea you gotta make your var's names better anyways check out the part i changed in your code,

code:

%if ballx >= brickx and ballx <= brickx2 and bally = bricky2 + 25 then      %   ypos := 10 - gravity   %  end if     %%may i recomend you use a ball size variable, if you dicide to change the size later it would suck to change all the numbers in your code.     %%Need to find point of contact with the brick...     if bally <= bricky2 and bally +10 >= bricky and ballx <= brickx2 and ballx+10 >= brickx then  %%i assume 10 is the size of the ball?         put "POINT OF CONTACT"         Input.Pause     end if

try to understand why that works, its rough lol but better then nothing, it IS 4:15 am lol im off to bed..

[uknowhoiam]

Turing:

if bally <= bricky2

The problem with the above code is that, if the ball if below the brick (like not even touching it)
the ball will boucne off

But Hey you got it to bounce

[Dusk Eagle]

uknowhoiam @ Wed Apr 15, 2009 7:54 pm wrote:

Turing:

if bally <= bricky2

The problem with the above code is that, if the ball if below the brick (like not even touching it)
the ball will boucne off

That's true, but you've seen the basic idea so now you know how it's done. Now you just have to apply your knowledge to all four sides of the ball and brick to make collision detection complete.