Jumping Issue..(SOLVED)

grimtooth

LOL somehow typing out my question led me to answer it on my own, but I will still post this with the hope that maybe it could help someone else i guess!

Yay! more Newbie Questions...

I wanted to remove the possibility (for now) of players jumping off of vertical walls or in mid-air after dropping off of a platform, So I built my jump routine as follows.

Jumps=Actor Attribute (Integer)

Jump (key)
-Accelerate at 90 degrees with value 600
-change attribute "Jumps" to 0

Fall
-IF actor Linear.motion.Y < 0
-change attribute "Jumps" to 0

Land
-IF Actor Linear.motion.Y=0
-change attribute "Jumps" to 1

This works fine for testing at first but after running around and jumping for a while it eventually breaks and the actor will not jump anymore.

SOLUTION: apparently "Actor Linear.motion.Y < 0" was too tight a tolerance... changing the 0 to -10 solved the problem immediately.

Warning to self and others... this setup will cause the actor to be unable to jump while running down slopes, although there may be a happy place around "Actor Linear.motion.Y < -100" that will still work.

I know you all would have answered that for me so theoretical thank you's all around!
Grim

grimtooth

hmmm... dang... it is extremely hard to do (but possible after more testing) but the linear.velocity.Y=0 in the land function is true for a split second at the peak of a jump allowing for double, triple, quadruple etc.. jumping...

I guess my alternative to collision rule jump resetting has its own fun flaws

jamie_c

Hi @grimtooth, I'm not sure if it will fit your needs or not but I have a tutorial here about movement and jumping in a platformer style if you're interested in checking it out.

http://www.jamie-cross.net/?portfolio=gamesalad-recipe-004-advanced-platform-character-movement-featuring-double-jumping

grimtooth

@jamie_c Thanks for the reply! .. I had found a dead link to that very same tutorial in google but was unable to read the actual article lol.

I had tried the above method of using the linear Y velocity rather than collide rules because in my first build the collide rules kept breaking and ending up with 0 jumps to use while standing on the floor. Also i wanted to try it partly because in the template I am building for myself all vertical and horizontal walls are the prototype actor. I understand that it would be pretty easy to just redo the walls but I wanted to try something else because I kept ending up with 0 jumps left.

In the end it was probably me just missing something since I had not at the time read your great tutorial

Thank You!