Stopping enemies overlapping on top down scroller?

[rosse119]

Hello,

I'm currently working on a top down 2D scroller similar to Spyhunter called Super Renegade Response, my issue is I have made some cars that bumps the player off the road, it uses 4 detectors on the player car, two wide ones at each side so when a bumping car is in that sensor it changes its x coordinate depending whether its on the left or the right.

The problem I have is I can only have one of these cars on screen at once as they tend to overlap as they are both drawn closer to the player car.
Anything I can do to fix this?

I thought of sensors for the bumping cars too, but how would you make each duplicate have its own sensors? As they are the same Active.

Thank you in advance.

James

[Francois]

Difficult to answer without seeing the code.
You will overpass the collision detection if you directly change the X and Y coordinates, and the cars will overlap.
Have you thought about using Physics? If you do, just use a force to push the cars when the detectors are hit..

[rosse119]

Let me see if I can remember the code used.

Always set Left bumper sensor at position on player (did this for all sensor)

If bumper car is overlapping right sensor every 0.02miliseconds set x of bumper car to x-2(it might be +2 can never remember when not actually doing it)
This repeated for the other side to.

If bumper car collides with player while overlapping sensor then set x of player car to either +15 or -15 depending on what side it is on.
I also set it so if your front sensor touches a bumper car it will set the Y of bumper car to Y-2
and same for the rear sensor but y+2

The best thing I have managed so far is to say if bumper car collides with another bumper car then stop, so far that kind of works but only with 2-3 in set positions, it would be great to have 7 on screen all fighting to knock you off the road.

I don't have clickfusion yet only MMF2 and its an Ouya title so don't think Box2D extension works with that on MMF2.

[Ziplock]

You need to use IDs. Rename Alterable Value A to ID in your "Left Bumper" and your "Enemy Car."

// Create ID values for both objects

Always:
-> Spread value 0 for ID in ("Left Bumper")
-> Spread value 0 for ID in ("Enemy Car")

// Create 1 bumper if less bumpers than cars

If Number ("Left Bumper") < NObjects ("Enemy Car"):
-> Create ("Left Bumper") at (0,0)

// Destroy 1 bumper if more bumpers than cars

ID of "Left Bumper" > NObjects ("Enemy Car") - 1:
-> Destroy ("Left Bumper")

// Affix left bumpers to cars

Always:
-> Start Loop "Affix Left Bumper" NObjects ("Left Bumper") Times

On Loop ("Affix Left Bumper")
+ ID of ("Left Bumper") = Loop Index ("Affix Left Bumper")
+ ID of ("Left Bumper") = ID of ("Enemy Car")
-> Set position of ("Left Bumper") to ("Enemy Car")

[rosse119]

This is great, I will download this tonight. Thank you ever so much.