The polygon colliding works perfectly now, the player does get pushed back though from onto where he collides. You can see it starting from version 0.1.65 here :
https://sourceforge.net/projects/kivypriestsoflore2/files/?source=navbar

Gaia's Navel level is almost finished.

Fighting works too, double tap to draw your sword against an enemy.

I still need better resource management for room exits etc.