spaceship thrust physics

[cubiq]

I have a game with an "asteroid-like" view. I'm fighting with the particle system to build a believable engine thrust but I'm failing miserably.

 

I've seen the sci fly example and a demo on codepen. Basically you either link the emitter to the sprite or update the emitter position in the update phase. I have no problems making the particles work, but it's hard to make it "believable".

 

The issues I'm encountering are:

 

1) The direction/gravity of the thrust should always be opposite to the spaceship direction, but particles should not follow the spaceship once emitted. Meaning that attaching the emitter to the sprite is a no-no, unless I'm missing something.

 

2) The particles should have some sort of "friction", so when the spaceship turns the particles form a nice arc

 

3) When the burst is off, the particles shouldn't stop right away but extinguish slowly. I was thinking to add a tween to the emitter Y, unless there's a simpler way.

 

Any guidance would be greatly appreciated.

 

PS: is there a phaser particle system editor/previewer somewhere?

[cubiq]

I come to the conclusion that it can't be done with the phaser's particle system. I had to create my little tiny particle system and make the engine thrust act very close to a "trail". The result is rendered on a render texture, so I guess it should be pretty fast.

 

I will eventually post the source code.

[jpdev]

Particles in Phaser do not follow their emitter, so moving the emitter to the position of the ship every frame shouldn't have been a problem.

 

(See this example: http://examples.phaser.io/_site/view_full.html?d=particles&f=click+burst.js&t=click%20burst)

 

Click twice at different screen position. (The emitter is moved to the second position - this does not impact the particle positions of the first emission)

[cubiq]

you can attach the emitter to the sprite, but the result was not what I wanted.