Maybe you could explain what you are trying to do, so an answer can be given?

Objects without behaviours and/or actions attached will allways stay at the same position, so a fixed x, but ofcourse also a fixed y..

You might even be able to use the bounding box edges for checking, depending on the way you have set things up..

If you could share your capx and/or a screenshot of your event sheet I'd be glad to explain why it isn't working..

You could do something like that by using the timer behaviour, setting the player to ignore user input and on timer change variables and use "simulate control" actions based on those variables..

Do you mean something like:

coin is overlapping

or

coin is overlapping at offset - coin set x = self.x + 5

There are many ways to do something like that by making the wanted events and actions, but I guess using the third party plugin litetween does make it much easier..

Not really sure, but when using "on touched object" instead of "on tap" it works much better..

Could you please give more explanation?

Also if you reference another game like "point blank" could you add a link to a video or screenshot of the game explaining which part you mean?

It would also be helpfull to know how you have your events set up thus far to be able to help you in regards to achieving the effect you want in your case, because different setups often require different solutions..

Without any of these questions above answered my answer would be:

Use a variable and set it to the number/name you want and add actions to your player depending on the name/number of the variable..

Regarding combo's it would probably be time/animation related when a combo is possible, so add conditions for that..

I dont wanna use Touch i wanna make runner but on pc u know how work this can u send picture how make this?

Ok..

So how does one swipe without using touch?

I think I'm missing something here?

With swipe you do mean the touch gesture, not cleaning with a broom, right?

II tried using platform to make him jump, but if I do that i dont know how to make it so he cant move.

This should be relatively easy..

Set default controls in the behaviour properties to NO

in your event sheet add an event:

on keyboardkey pressed - platform simulate jump

For simple AI you could use a distance check

system compare two values : distance(player.x,player.y,enemy.x,enemy.y) < your desired amount

Then you could check if the enemy is in the left or right of the player and have it move/shoot accordingly..

Although I'm not exactly sure what you mean I guess you are talking about using families..

https://www.scirra.com/manual/142/families