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Argus

Wed Jun 24, 2009 11:39 am


Zomg Ir N00b

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What is it you are trying to achieve?
Making my own collision detection


What is the problem you are having?
Operands of Boolean operators must be boolean, higlights the variable c in the if statement


Describe what you have tried to solve this problem
changed variable c to boolean, didnt work


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



var superman : int := Pic.FileNew ("Superman.gif")
var ssprite : int := Sprite.New (superman)
var boulder : int := Pic.FileNew ("rock.gif")
var bsprite : int := Sprite.New (boulder)
var chars : array char of boolean
var x, y, a, b, c, d, e : int

x := 100
y := 100
d := 400
e := 400

Sprite.SetPosition (ssprite, 100, 100, true)
Sprite.Show (ssprite)
Sprite.SetPosition (bsprite, 400, 400, true)
Sprite.Show (bsprite)

loop
    a := 30
    b := 60
    c := 40
    Input.KeyDown (chars) 
    if chars (KEY_UP_ARROW) then 
        y := y + 5 
    end if
    if chars (KEY_RIGHT_ARROW) then  
        x := x + 5 
    end if
    if chars (KEY_LEFT_ARROW) then 
        x := x - 5 
    end if
    if chars (KEY_DOWN_ARROW) then 
        y := y - 5 
    end if
    View.Update
    Sprite.Animate (ssprite, superman, x, y, true)
    Sprite.Animate (bsprite, boulder, d, e, true)
    delay (10)
    if x + b and y + a > d - c and e - c then
        delay (1000)
    end if
end loop



Please specify what version of Turing you are using
4.1.1a or sumthing like that


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DemonWasp

Wed Jun 24, 2009 12:05 pm


RE:Zomg Ir N00b

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Well, the solution depends on what you're trying to do. Let's break up the if-statement's condition first:

[code]if x + b then[/code]
The above doesn't make any sense. Why not? Well, suppose x is 15 and b is 12. Then what you're asking is "if 27 then...", and that's just nonsense.

Similarly,
[code]if e - c then[/code]
doesn't make any sense.

You'll be happy to know that
[code]if y + a > d - c then[/code]
makes sense - because it has a comparison operation in it. Instead of asking "if 27", you're asking "if 27 is greater than 15, then...".

At a guess, you were expecting it to compare (x+b) and (y+a) to (d-c) and (e-c). In that case, you want this:
[code]
if x+b > d-c and x+b > e-c and y+a > d-c and y+a > e-c then 
[/code]


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Argus

Wed Jun 24, 2009 5:24 pm


RE:Zomg Ir N00b

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ok my sprites are centeed and i want it to be like if the top right corner is in between 2 points in the other sprite then its a hit