I just discovered something pretty weird about C2's Particles object.
In some strangely specific circumstances, the particle images actually will rotate.
The native C2 Particles object, for rendering optimization reasons, doesn't provide rotation options for the particle image.
So, if you rotate a layer, say 45 degrees, (e.g. to simulate camera rotation), with a Particles object on it, the particle images will not rotate with the layer, and will instead stay oriented upright to the monitor.
However, there is a weird case where they will rotate with the layer.
If the Particles image dimensions are 256 x 256, and the Particles Size property is 256, and the layout is scaled up by any factor greater than 4 (e.g. 4.001), then the particle images will rotate with the layer, as if they were inheriting their orientation from it.
This is the only case I've ever seen that causes Particle images to rotate.
I suspect it may have something to do with the particle sprites being large enough that they can't entirely fit in the renderable canvas area. e.g. Using 512 x 512 images and a layout scale of 2.01 will also cause the layer-inherited rotation.
https://www.dropbox.com/s/72r6sibcytwem ... .capx?dl=1
In case anyone is interested. :)
Steps to reproduce:
Create a native C2 Particle object.
Set it's image dimensions to 256 x 256.
Draw a vertical bar for the image.
Set the Particles "Size" property to 256.
Create a simple tiles grid backdrop. (So it will be easier to see the layer's rotated orientation.)
Add Mouse object. (Just need to use the buttons for interaction.)
At start of layout, Set layer angle to 45 degrees.
On Click Left, Set layout scale to 4.1
On Click Right, Set layout scale to 3.9
Now preview the game, and click the left and right mouse buttons to see the particles alternate between un-rotated, and rotated.
Any idea what's going on here?