How do you make sprites jump?

magnamanjang

How do you?
If you need my project then here it is! http://scratch.mit.edu/projects/45833704/
Thanks!
Magnamanjang

drmcw

when [up arrow v] key pressed
change y by (20)

would be a start for you, however I'm sure you'll soon find issues with it. You then need to rethink how you do the program, so look in the sticky topics and it should give you some ideas.

Godzillafreak

Just do this The numbers depends on how high you want the sprite to jump If you want to laugh go herehttp://scratch.mit.edu/studios/892116/

when [ space] key pressed
change y by ...
change y by -...

Last edited by Godzillafreak (Jan. 31, 2015 21:27:49)

invisibowl

Depends. If you want to actually jump, then what drmcw suggested would be best. Otherwise (like if it's a top-down game) you could cheat like Zelda: A Link to the Past did and just have a shadow that moves in and out. Basically it would work like this - look at the scripts for Sprite8, which are also below:

when green flag clicked
show
forever
        set x to (([x position v] of [Sprite1 v]) - (0))
        set y to (([y position v] of [Sprite1 v]) - (5))
    
    if <key [space v] pressed?> then
        broadcast [jump v]
        glide (0.25) secs to x:(([x position v] of [Sprite1 v]) - (10)) y:(([y position v] of [Sprite1 v]) - (10))
        glide (0.25) secs to x:([x position v] of [Sprite1 v]) y:(([y position v] of [Sprite1 v]) - (2))
        
    end
end

Notice the

broadcast [jump v]

block- this will theoretically help disable collision detection. For instance:

when green flag clicked
forever
    
if <touching [maze v] ?> then
turn cw (180) degrees
move (3) steps
    
end

end


when I receive [jump v]
forever
    if <touching [maze v] ?> then
do (something)
you get (the idea)
end

end

ytaha

when green flag clicked
set [velocity v] to [0 ]
forever
    
change [velocity v] by (-1)

if <touching [ground v] ?> then
    
set [velocity v] to [0]
end
change y by (velocity)
end

Last edited by ytaha (Feb. 1, 2015 12:09:03)

brainstorm101

This is probably the easiest way:

when [space] key pressed
change y by (20)

peppermintpatty5

There are many, many ways of making a sprite jump. In my opinion, the simulated parabola and the cosine wave method are the most accurate, but this is an easy method to get you started:

when [space v] key pressed
set [power v] to [30]
repeat until <(power) < [0.05]>
go to x: (x position) y: ((y position) + (power))
set [power v] to ((power) / (1.25)
end
repeat until <(power) > [30.0]>
go to x: (x position) y: ((y position) - (power))
set [power v] to ((power) * (1.25)
end

ealgase

when [up arrow v] key pressed
repeat (2)
    
change y by (2)
end
repeat (5)
change y by (3)
    
end
wait (.3) secs
repeat (2)
    
change y by (-2)
end
repeat (5)
change y by (-3)
    
end

LexHarley

magnamanjang wrote:
How do you?
If you need my project then here it is! http://scratch.mit.edu/projects/45833704/
Thanks!
Magnamanjang

A simple, but well- animated way to have a character jump would be this:

when [Up Arrow v] key pressed
repeat (10)
wait (0.01) secs
change y by (1.5)
end
repeat (10)
wait (0.01) secs
change y by (-1.5)
end

Hope you make a great game!

Last edited by LexHarley (July 6, 2015 14:59:02)

msilby

magnamanjang wrote:
How do you?
If you need my project then here it is! http://scratch.mit.edu/projects/45833704/
Thanks!
Magnamanjang

I looked at your project. It looked like Pico was always jumping a short distance (which looked like a vibration). I did a quick remix using the up arrow to control the jump and simulated gravity to fall back down. Hope this is helpful.

http://scratch.mit.edu/projects/45946656/

Discuss Scratch