Scratch

The only solution I know of is making it move up a little bit slower until it is no longer touching the land.

terminator68 wrote:

Perhaps change the script so the sprite falls down slower...

The problem is actually that 'Change Y by [yVel]' continues even if the sprite is touching land. I could fix it by getting a different system for gravity, like this one:

That'll make it change the y by -1 until it's touching the color, and it acts like:
If not touching color
Change y by -5
End if
Except of course, that it stops upon 1 pixel of contact. Should I sacrifice realistic jumping for working jumping?

Last edited by Sunrise-Moon (2010-08-04 16:05:37)

Is the ground flat? If so, you could add something in script that checks to see if "Yvel" is greater than the distance to the ground. But beware, the "distance to" block calculates from the center of the sprite.

Sunrise-Moon wrote:

graham7sarah9 wrote:

Is the ground flat? If so, you could add something in script that checks to see if "Y velocity" is greater than the distance to the ground. But beware, the "distance to" block calculates from the center of the sprite.

The level is flat, but the level is in the backgrounds, so that won't quite work.

I don't think scratch has a <distance to[ stage] block for the stage, but if there is would be one it would be the distance to the center, since its a scroller the sprite isn't really moving, the terrain is.

Last edited by jman13 (2010-08-04 16:24:19)

Oh.

murpho wrote:

What if like you dont jump high enough. Youll get stuck in the middle of the thing you want to jump on

Eh?

murpho wrote:

Like hmm.... In some platformers on here if you dont get on top but half way through where you want to land you are in the middle of it

That can be fixed with sensors 

terminator68 wrote:

If you want, I can give you a script for correct y movement. It even has velocity 

Please do 

Harakou wrote:

Sunrise-Moon wrote:

graham7sarah9 wrote:

Is the ground flat? If so, you could add something in script that checks to see if "Yvel" is greater than the distance to the ground. But beware, the "distance to" block calculates from the center of the sprite.

The level is flat, but the level is in teh backgroundz, so that won't quite work.

Well just figure out the y position of the ground.

Code:

When green flag clicked
Forever if not ((y postion + Yvel) < y position of ground)
   Change y by Yvel

It won't work fast enough is the problem.

terminator68 wrote:

Sunrise-Moon wrote:

terminator68 wrote:

If you want, I can give you a script for correct y movement. It even has velocity 

Please do 

http://resources.scratchr.org/view/221. You may need to change the costumes  .

That's what I was talking about with my script above^.

For now, I think it's impossible to fix my problem- I've tried everything (except the kitchen sink).

Sunrise-Moon wrote:

Harakou wrote:

Sunrise-Moon wrote:

The level is flat, but the level is in teh backgroundz, so that won't quite work.

Well just figure out the y position of the ground.

Code:

When green flag clicked
Forever if not ((y postion + Yvel) < y position of ground)
   Change y by Yvel

It won't work fast enough is the problem.

Why not? It will go the same speed, but will check if it will go past the ground first.

Wow, so much struggling for such an simple problem. What happens when your sprite moves too far down (or any direction), you move it in the opposite direction, which in this case is up. The only problem now is telling the sprite when it is stuck in the ground, and for this I use sensor sprites.

I made a demo for this @ http://scratch.mit.edu/projects/archmage/101212

This is how I learned in flash, except in flash there is a command called a "hitTest" which lets you see if a sprite is in contact with a specific coordinate. Traditional games do not use an "Art Based" approach like scratch projects do. Instead all the information for the terrain, player and enemies are stored in Multi-dimentional arrays (simply lists of lists, think tables) and the game checks different values in the  array to see if the player is hitting anything.

Last edited by archmage (2010-08-04 18:51:26)