How do I create a collision without any problem

Hi

I have a problem with "on collision" event

it doesn't work sometimes

I have an object that moves with "Custom Movement" behavior (for example x) and another object that moves with "Drag and Drop" behavior (y)

I set an event that when object x is on collision with object y, object x destroys itself

but sometimes it doesn't work, specially in mobile devices (I used cocoonjs, iPod 4G)

please tell me how to fix this.

I don't understand how it's not working...

you mean something like that?

yes

it works most of the times, but sometimes it doesn't work

I found this tutorial

https://www.scirra.com/tutorials/973/pi ... th-bullets

is there any way I can fix it or I use this tutorial?

I don't know, this have never happened to me before, maybe you're doing something wrong in the event sheet, try re-doing your events and expirement.

when the speed of object x is so much for example 10000, it would happen

you can test it

when the speed of object x is so much for example 10000, it would happen

you can test it

That is probably too fast if you have a considerably small area of collision, the collision check might have been missed, in such a way that the bullet "teleported" just in front of the collision area, and the engine redraw the next tick at the back of the collision area.

Conclusion: High speed bullet don't work well with small collision area.

when the speed is 10000 it doesn't work and I just said it for Wisdoms

my object max speed is 500 and it works most of the times

for example in my pc 1 out of 100 doesn't work but in my ipod 4G 1 out of 10 doesn't work

and I didn't use bullet behavior, i used custom movement

there isn't any way to fix it and I have to use this tutorial?

https://www.scirra.com/tutorials/973/pi ... th-bullets

I think if you post a Capx i could help you.

my pc 1 out of 100 doesn't work but in my ipod 4G 1 out of 10 doesn't work

PC is always better than mobile in terms of processing power, the hardware limits the performance on how many tick/second it can reach. It will behave the same if the mobile version of your game can match the performance you see on pc.