Tile collision direction flags

[kevin-chau]

Hi Hexus,

I'm really enjoying you're slopes plugin, its exactly what I needed for my game.

I'm trying to implement jumping through a platform from underneath. I believe normally for a tilemap you can just set the parameter collideDown to false for each tile. Since your plugin uses tilemaps, I've tried doing this but still get collisions from below so I can't jump through. Is there a specific way to turn off down collisions for your slopes plugin or am I doing something wrong? Thanks!

[hexus]

Awesome, I'm glad it's helpful for you.

Actually, the plugin doesn't properly support this yet and probably should in some way.

I'll add this to the roadmap for v0.2.0. It's a compatibility feature I initially left out because the meaning of these directions changes a little once you introduce 45 degree angles. I'm sure I can work something out though, and this will be useful in my own games too.

[kevin-chau]

Are there any work-arounds I can try in the meantime? I wouldn't mind hacking around your plugin a little, but I'm still not sure how to go about one way collisions with it.

[hexus]

Hopefully I'm right in thinking that all it will take is changing these lines:

https://github.com/hexus/phaser-arcade-slopes/blob/v0.2.0-alpha2/src/ArcadeSlopes/SatSolver.js#L611-L626

For example, this part of a condition:

tile.slope.edges.top === Phaser.Plugin.ArcadeSlopes.TileSlope.EMPTY && ...

becomes:

(!tile.collideUp || tile.slope.edges.top === Phaser.Plugin.ArcadeSlopes.TileSlope.EMPTY) && ...

The same would need to be done for bottom, left, right, etc.

I'd probably do this more formally for the actual implementation.

[kevin-chau]

@hexus
Just confirmed that what you suggested works for me! Thank you for your help!

[hexus]

Awesome.

Your Mario project looks cool too, I'm glad the plugin helps you to build it.

[hexus]

Fixed above. Thanks for bringing this up. 👍