Scratch

henley wrote:

I am working on a one sprite, one script two player game. There is one player, a black stickman, and another, a white stickman. I can't really describe things, so here is a picture of the stage:

http://i27.tinypic.com/70cbqc.png

It's said that one picture is worth a thousand words, so I hope that puts a good image of the game play in your head. When the white player jumps, it goes down.

Now for the real part that this thread was made for: the problem, the (personificationally speaking:) antagonist, the issue:

When ever the black stickman jumps, he doesn't come down. He just stays in the air. But I just copied the black stickman's part of the script an put them in for the white stickman parts of the script and changed the variables to match. I can't figure out what I'm doing wrong.

Here is the script:

(remember, this is a 1s1s)

THE VARIABLE KEY:
B=Black Stickman
W=White Stickman
X=X Position
Y=Y Position
V=Velocity.

http://i30.tinypic.com/10x63bk.gif

Why doesn't he go down? I feel like this will be one of those dumb questions with a simple answer that I can't seem to figure out.

I seriously can't work this one out, it looks right, im not very good at this kind of thing, Im thinking has something to do with the *0.9 but I don't see why that wouldn't work, I'vejust checked it on my calculator but it works both ways, so sorry but I'm no help.

Oh, I think i've spotted it!

Black doesn't have the

[blocks]<if>   <not>  <touching color[ ◘ ]  >>
<change{ BYV  }by( 1/-1 )
<end>
[/blocks]
script!

Last edited by markyparky56 (2010-07-14 09:47:10)

henley wrote:

markyparky56 wrote:

Oh, I think i've spotted it!

Black doesn't have the

[blocks]<if>   <not>  <touching color[ ◘ ]  >>
<change{ BYV  }by( 1/-1 )
<end>
[/blocks]
script!

Good observation! But, if I do that, instead of just not coming down, it keeps on going upward.

Even if its -1?

You did change it to black, not white didnt you?

You need to go to the BLACK's position when testing for colors, right now (because the white is drawn last) it's at the WHITE's position. I just put this:

[clear]
[switch to costume black]
[go to bx by]
... (detection
[stamp]
[switch to costume white]
[go to wx wy]
... (detection
[stamp]

Last edited by nXIII (2010-07-14 12:12:59)

ScratchReallyROCKS wrote:

I fixed it! (sorry nXIII I tried that and I'm pretty sure it doesn't work) it turns out that color sensing doesn't work, so you have to do it with the variables.

here it is

You are wrong.

http://scratch.mit.edu/projects/nXIII/1191200

Last edited by nXIII (2010-07-14 13:06:15)

ScratchReallyROCKS wrote:

nXIII wrote:

ScratchReallyROCKS wrote:

I fixed it! (sorry nXIII I tried that and I'm pretty sure it doesn't work) it turns out that color sensing doesn't work, so you have to do it with the variables.

here it is

You are wrong.

http://scratch.mit.edu/projects/nXIII/1191200

Oh, I see, you put the stamp blocks in a different place than I did when I tried it. Well, your way doesn't work any better than mine and my way doesn't work any better than yours, so I guess he could use either.

My way works better because the stage isn't always flat, it can have objects in it. your way doesn't work with color sensing.

Yay! It's fixed! And yes ScratchReallyROCKS, I am making a game out of it. I am using nXIII's way because it works faster, and the variables are confusing me.

Well, I guess there is no need for this topic anymore.