Jezzball

[Mr. T]

For those of you who have played jezzball before know that if wall being created, runs into a previously created wall, the new wall should stop growing. For some reason, this only occurs occasionally and under certain circumstances. I don't know why. The relevant code is
on line 38. I attempted to hault the growth of the bar using a boolean. Any idea why this is not working properly? Here's the entire code.

code:

var wallCreator : boolean := true var ballTrapperBoolean : boolean := true var barInterrupt : boolean := true const RADIUS : int := 5 var NUM_BALLS : int := 1 var x, y, dx, dy : array 1 .. NUM_BALLS of int var xLeadingEdge, yLeadingEdge : int var clr1 : int := green var clr2 : int := red var barX, barY, button, left, middle, right : int var lives : int := 3 var fontGameOver : int := Font.New ("Arial:80") var barXStore1, barXStore2, barYStore1, barYStore2 : int View.Set ("nocursor,nobuttonbar, title:JezzBall                  Lives: " + intstr (lives)) process ballTrapper     %Mouse Declaration     barInterrupt := true     ballTrapperBoolean := false %cant create new wall while previous one is being created     Mouse.ButtonChoose ("multibutton")     Mouse.Where (barX, barY, button)     left := button mod 10           % left = 0 or 1     middle := (button - left) mod 100       % middle = 0 or 10     right := button - middle - left         % right = 0 or 100     %Left Click = Horizontal Bar     if left = 1 and barX >= maxx div 2 and whatdotcolour (barX, barY) not= blue then         for a : 1 .. barX             if whatdotcolour (barX + a, barY) = blue                     then                 barInterrupt := false             end if             if barInterrupt = true then                 Draw.FillBox (barX + a, barY, barX, barY + 10, clr1)                 Draw.FillBox (barX - a, barY, barX, barY + 10, clr2)                 barXStore1 := barX + a                 delay (1)             else                 clr1 := blue                 Draw.FillBox (barXStore1, barY, barX, barY + 10, clr1)                 Draw.FillBox (barX - a, barY, barX, barY + 10, clr2)                 delay (1)             end if             if barX + a = maxx  %first end to reach the wall turns blue                     then                 clr1 := blue             end if             if barX - a = 1 and wallCreator = true %right before for loop ends                     then                 clr1 := blue                 clr2 := blue %when the wall is complete, it will turn blue,                 %indicating that the ball can collide with it                 %without losing a life.                 Draw.FillBox (barX + a, 0, barX, barY, clr1)  %fills in the space below the ball                 Draw.FillBox (barX - a - 1, 0, barX, barY, clr2) %fills in the space below the ball             end if             if wallCreator = false then %ball collided with green wall                 Draw.FillBox (barX + a, barY, barX, barY + 10, white)                 Draw.FillBox (barX - a, barY, barX, barY + 10, white)                 lives := lives - 1 %lost life                 View.Set ("nocursor,nobuttonbar, title:JezzBall                  Lives: " + intstr (lives))                 exit             end if         end for                 clr1 := green         clr2 := red %colour reset, next time a wall is created, it will be         %green, indicating that if the ball collides with it         %you will lose a life.     elsif left = 1 and barX < maxx div 2 and whatdotcolour (barX, barY) not= blue then                 for a : 1 .. maxx - barX             if whatdotcolour (barX - a, barY) = blue                     then                 barInterrupt := false             end if             if barInterrupt = true then                 Draw.FillBox (barX + a, barY, barX, barY + 10, clr1) %fills in the space below the ball                 Draw.FillBox (barX - a, barY, barX, barY + 10, clr2) %fills in the space below the ball                 barXStore2 := barX - a                 delay (1)             else                 clr2 := blue                 Draw.FillBox (barX + a, barY, barX, barY + 10, clr1) %fills in the space below the ball                 Draw.FillBox (barXStore2, barY, barX, barY + 10, clr2) %fills in the space below the ball                 delay (1)             end if             if barX - a = 0 %first end to reach the wall turns blue                     then                 clr2 := blue             end if             if barX + a = maxx - 1 and wallCreator = true %right before for loop ends                     then                 clr1 := blue                 clr2 := blue                 %when the wall is complete, it will turn blue,                 %indicating that the ball can collide with it                 %without losing a life.                 Draw.FillBox (barX + a + 1, 0, barX, barY, clr1)  %fills in the space below the ball                 Draw.FillBox (barX - a, 0, barX, barY, clr2)  %fills in the space below the ball             end if             if wallCreator = false then %ball collided with green wall                 Draw.FillBox (barX + a, barY, barX, barY + 10, white) %fills in the space below the ball                 Draw.FillBox (barX - a, barY, barX, barY + 10, white) %fills in the space below the ball                 lives := lives - 1 %lost life                 View.Set ("nocursor,nobuttonbar, title:JezzBall                  Lives: " + intstr (lives))                 exit             end if         end for                 clr1 := green         clr2 := red %colour reset, next time a wall is created, it will be         %green, indicating that if the ball collides with it         %you will lose a life.     end if     %Right Click = Vertical Bar     if right = 100 and barY >= maxy div 2 and whatdotcolour (barX, barY) not= blue then         for a : 1 .. barY             if whatdotcolour (barX, barY + a) = blue                     then                 barInterrupt := false             end if             if barInterrupt = true then                 Draw.FillBox (barX, barY + a, barX + 10, barY, clr1)                 Draw.FillBox (barX, barY - a, barX + 10, barY, clr2)                 barYStore1 := barY + a                 delay (1)             else                 clr1 := blue                 Draw.FillBox (barX, barYStore1, barX + 10, barY, clr1)                 Draw.FillBox (barX, barY - a, barX + 10, barY, clr2)                 delay (1)             end if             if barY + a = maxy %first end to reach the wall turns blue                     then                 clr1 := blue             end if             if barY - a = 1 and wallCreator = true %right before for loop ends                     then                 clr1 := blue                 clr2 := blue %when the wall is complete, it will turn blue,                 %indicating that the ball can collide with it                 %without losing a life.                 Draw.FillBox (0, barY + a, barX, barY, clr1)   %fills in the space to the side the ball                 Draw.FillBox (0, barY - a - 1, barX, barY, clr2) %fills in the space to the side the ball             end if             if wallCreator = false then %ball collided with green wall                 Draw.FillBox (barX, barY + a, barX + 10, barY, white)                 Draw.FillBox (barX, barY - a, barX + 10, barY, white)                 lives := lives - 1 %lost life                 View.Set ("nocursor,nobuttonbar, title:JezzBall                  Lives: " + intstr (lives))                 exit             end if                                                                               end for                   clr1 := green         clr2 := red %colour reset, next time a wall is created, it will be         %green, indicating that if the ball collides with it         %you will lose a life.     elsif right = 100 and barY < maxy div 2 and whatdotcolour (barX, barY) not= blue then         for a : 1 .. maxy - barY             if whatdotcolour (barX, barY - a) = blue                     then                 barInterrupt := false             end if             if barInterrupt = true then                 Draw.FillBox (barX, barY + a, barX + 10, barY, clr1)                 Draw.FillBox (barX, barY - a, barX + 10, barY, clr2)                 barYStore2 := barY - a                 delay (1)             else                 clr2 := blue                   Draw.FillBox (barX, barY + a, barX + 10, barY, clr1)                 Draw.FillBox (barX, barYStore2, barX + 10, barY, clr2)                 delay (1)             end if             if barY - a = 0 %first end to reach the wall turns blue                     then                 clr2 := blue             end if             if barY + a = maxy - 1 and wallCreator = true %right before for loop ends                     then                 clr1 := blue                 clr2 := blue %when the wall is complete, it will turn blue,                 %indicating that the ball can collide with it                 %without losing a life.                 Draw.FillBox (0, barY + a + 1, barX, barY, clr1) %fills in the space to the side the ball                 Draw.FillBox (0, barY - a, barX, barY, clr2) %fills in the space to the side the ball             end if             if wallCreator = false then %ball collided with green wall                 Draw.FillBox (barX, barY + a, barX + 10, barY, white)                 Draw.FillBox (barX, barY - a, barX + 10, barY, white)                 lives := lives - 1 %lost life                 View.Set ("nocursor,nobuttonbar, title:JezzBall                  Lives: " + intstr (lives))                 exit             end if                       end for                 clr1 := green         clr2 := red %colour reset, next time a wall is created, it will be         %green, indicating that if the ball collides with it         %you will lose a life.     end if     %Boolean reset     wallCreator := true     ballTrapperBoolean := true end ballTrapper for i : 1 .. NUM_BALLS     x (i) := Rand.Int (RADIUS, maxx - RADIUS)     y (i) := Rand.Int (RADIUS, maxy - RADIUS)     dx (i) := Rand.Int (-6, 6)     dy (i) := Rand.Int (-6, 6) end for loop     %Boundary Wall Collision     for i : 1 .. NUM_BALLS         if x (i) + dx (i) < RADIUS or                 x (i) + dx (i) > maxx - RADIUS then             %Music.Sound (440, 30)             dx (i) := -dx (i)         end if         if y (i) + dy (i) < RADIUS or                 y (i) + dy (i) > maxy - RADIUS then             %Music.Sound (440, 30)             dy (i) := -dy (i)         end if         x (i) := x (i) + dx (i)         y (i) := y (i) + dy (i)         Draw.FillOval (x (i), y (i), RADIUS, RADIUS, red)         delay (5)         View.Update         Draw.FillOval (x (i), y (i), RADIUS, RADIUS, white)         %Completed Wall Collision     end for     %Uncompleted Wall Collision     if whatdotcolour (x (1) + RADIUS, y (1) + RADIUS) = green or whatdotcolour (x (1) + RADIUS, y (1) + RADIUS) = red then         wallCreator := false     %if ball collides with green wall, cancel wall creation     end if     % Ball Trapper     if ballTrapperBoolean = true             then         fork ballTrapper     else     end if     %Game Over     if lives = 0 then         wallCreator := false         exit     end if end loop cls View.Set ("nocursor,nobuttonbar, title:JezzBall                  Lives: " + intstr (lives) + "                  You Lose!") for i : 1 .. 10     delay (100)     Font.Draw ("Game Over!", 30, (maxy div 2) - 20, fontGameOver, i) end for