I either found a bug or I'm going crazy.

So I've got a little frogger clone I'm building. Everything was going great until I got to the logs bit. The frog is supposed to ride on the logs smoothly while in all other instances he moves on a grid. So, I've had a *lot* of trouble getting this to work and I've got the problem nailed down to this.

When I set bullet.speed of the player to a negative value it appears to invert the previous value.

Example: On X pressed Set bullet speed to -200

Each time you hit X the object reverses his direction.

Here is my capx file:

So I've got a little frogger clone I'm building. Everything was going great until I got to the logs bit. The frog is supposed to ride on the logs smoothly while in all other instances he moves on a grid. So, I've had a *lot* of trouble getting this to work and I've got the problem nailed down to this.

When I set bullet.speed of the player to a negative value it appears to invert the previous value.

Example: On X pressed Set bullet speed to -200

Each time you hit X the object reverses his direction.

Here is my capx file:

drive.google[DOT]com/file/d/0BwDq5BPaWAXyR0FsVzdTODlFbEk/view?usp=sharing

Event 47 and 48 are where I'm setting the speed of the player.

I really appreicate any help guys I feel like I'm going nuts.

Why are you even using a bullet instead of a normal movement?

Just do On z pressed set x to self.x +2

and On x pressed set x to self.x -2

Replace 2 with whatever value you want.

That would only work if you were to use the expression bullet.speed

Speed is alway a positive number, so it thinks -200 is to go backwards... at 200 pixels per second.

If you want it to stop, set it to 0, or disable the behavior.

The key is experimentation.

VIKINGS

I'm using bullet because my normal movement is grid based, so I have a different set up for that. When the player is on a log I want the movement to be smooth so I'm using bullet.

newt

My problem is that this: I set bullet to -200 and my player moves to the left. I set it to -200 again and it starts moving the other way. I'm just setting the value to -200 two different times but I get different results!

If anyone could download the project and see if they could replicate the situation locally I would really appreciate it.

I'd pin the frog to the log, then unpin on jump. Then you don't have to worry about the frog movement.

blackhornet

That's a really good idea I'll try it out and let you know.

did you set the angle of motion for the bullet behavior?

blackhornet

Pin didn't work, it only grabs me when I get to the edge of the log.

shinkan

Nope, I tried turning it on, it didn't change anything.

Thanks for all the help so far I do think that there is a bug with construct so I went ahead and filed a bug report here:

scirra[DOT]com/forum/setting-bullet-speed-to-a-negative-value-inverts-the-result_t149146

blackhornettechnologies.com/Construct2Stuff/Frogger4_BHT.capx

why u using speed to change angle of motion which bullet behavior has.... on x pressed set angle of motion to 0 on z pressed set angle of motion to 180 that way only the movement direction will change.. and not the actor angle if you have the set angle deselected... its not a bug ... its wrong using of the variables..