LÖVE

So I'm trying to make some sort of message box with an arrow pointing to a square.

I'm using to render this. I'm rendering a rectangle-shaped polygon, and if some character were to be talking, then there would be more vertices to turn that rectangle into a speech bubble shape.





So in the bottom image, I clicked on the character on the right, the left part of the arrow is way off to the left, so I assumed my math was wrong. However, when I used the SAME vertices with , it works as intended






Is there any caveat or something wrong with my implimenation of

Your polygon is concave. love.graphics.polygon works with convex polygons only.
You could draw your speech bubble in two parts as a rectangle and a triangle or you could use love.math.triangulate
My tutorial on polygon math:
https://2dengine.com/?p=polygons#Convex_or_concave

Here's an example that creates a mesh out of a polygon and renders it: https://love2d.org/forums/viewtopic.php ... 64#p227964

If you only need a flat colour, you can probably simplify it by omitting the assignation of UVs.

ivan wrote: ↑Thu Sep 26, 2019 5:01 am Your polygon is concave. love.graphics.polygon works with convex polygons only.
You could draw your speech bubble in two parts as a rectangle and a triangle or you could use love.math.triangulate
My tutorial on polygon math:
https://2dengine.com/?p=polygons#Convex_or_concave

Thank you for your help. I solved this problem by using