game that wont jump??

[pokerface]

i have no idea what so ever on how to make my red dot jump this is the code:

code:

setscreen ("graphics:600,500") var x, y : int x := 13 y := 13 var chars : array char of boolean View.Set ("offscreenonly") loop     Input.KeyDown (chars)     % if chars (KEY_UP_ARROW) and y < 487 then     %     y := y + 1     % end if     % if chars (KEY_DOWN_ARROW) and y > 13 then     %     y := y - 1     % end if     if chars (KEY_LEFT_ARROW) and x > 13 then         x -= 1     end if     if chars (KEY_RIGHT_ARROW) and x < 587 then         x += 1     end if     if chars (' ') then     end if     if chars ('r') then         cls     end if     drawbox (1, 1, 599, 499, black)     drawfilloval (x, y, 10, 10, brightred)     drawdot (x, y, white)     %drawoval (x, y, 10, 10, brightred)     delay (5)     View.Update end loop

im new to part of turing (part= to gui movement)

[Cervantes]

Here's links to two threads that you should read, regarding jumping. I think they will answer your questions.

http://www.compsci.ca/v2/viewtopic.php?t=7019
http://www.compsci.ca/v2/viewtopic.php?t=6431

There's a rather long post be me in this first link (several posts down, you can't miss it ) that should be all you need. But there's more material if you wish.

[pokerface]

this may sound funny but how do i make a different platform for my character to jump on!!!

i made the line

code:

drawfillbox (60, 36, maxx, 40, black)

and now i want my character to stop on top of it when i jump on it? other words how do i make this platform a soild?

[Cervantes]

pokerface wrote:

this may sound funny

Not at all.

pokerface wrote:

but how do i make a different platform for my character to jump on!!!

i made the line

code:

drawfillbox (60, 36, maxx, 40, black)

and now i want my character to stop on top of it when i jump on it? other words how do i make this platform a soild?

You're asking about collision detection. There are several different ways to do this. One is using an if statement to check if the y value of your character is between certain values and the x value as well. Another method is to use whatdotcolour.
Check out the Walkthrough. About a third of the way through there is a link to collision detection and another just after it to whatdotcolour.

[pokerface]

no how many times i read the tuts i cant understand what to do with my line!!! please someone tell me exacly how to make it so i could learn from it and make more lines with the same formula!!! i really been reading and reading but i cant put it all together
!!!!!!!!! PLEASE HELP!!!!!!!!!!!

[Cervantes]

Here's some simple jumping with whatdotcolour detection:

Turing:

View.Set ("offscreenonly") const gravity := 0.15 var x, y, vy : real x := maxx / 2 y := 20 vy := 0 var jumping := false var keys : array char of boolean loop     if whatdotcolour (round (x), round (y - 11)) = black then %radius is 10. go one below it.         jumping := false         vy := 0     end if     if whatdotcolour (round (x), round (y + 11)) = black then   %check one above it         vy := 0     end if     Input.KeyDown (keys)     if keys (KEY_UP_ARROW) and not jumping then         jumping := true         vy := 5     end if     if keys (KEY_LEFT_ARROW) then         x -= 2     end if     if keys (KEY_RIGHT_ARROW) then         x += 2     end if     if jumping then         vy -= gravity     end if     y += vy     cls     drawfilloval (round (x), round (y), 10, 10, black)  %draw character     drawfillbox (0, 60, 200, 70, black)                 %draw platform     drawfillbox (0, 0, maxx, 10, black)                 %draw floor     View.Update     delay (10) end loop

Notice, however, that you can do some funky things, like if you jump off the platform and then start to move back towards it while in mid jump, you can sort of hang on the bottom of the platform, if timed correctly. To fix this, you'd need to check more than just directly under the player. You'd have to use a for loop and check all across his width.

[pokerface]

i could give my character a radius that would do the same thing as what ur saying with the for loop?

[Cervantes]

Just giving it a radius doesn't help. What I think you are saying is check at his left and right edges, as well. Well, kinda. What I'm suggesting, however, is you check every single pixel in a horizontal line underneath the character.

Now, provided you don't have any platforms that are one pixel wide, you could only check every other pixel. If you're smallest platform is 5 pixels, wide, you could check every 5 pixels. You should, however, at least check on either side of the character.

[pokerface]

hey i just wanted to let u guys see what i got so far. please tell me what u think!