Hi all, I am starting to develop a tactics game and ran into a problem I had not thought of. I began by drawing a screen with a hex grid, and this is no big deal. I got that working fine. But, I realized it didn't look quite right. This is because in most strategy games, you're not looking straight down. There is a bit of a tilt. Attached is an example of what I mean. The hexagons on bottom are larger than the hexagons on top, and I'm unsure of how to go about adding this effect. Especially when you consider that some maps may be of different sizes.
I'm not sure if this is the right place to post something like this, but it seems as though some sort of linear transformation would be applied? No? I don't even know where to begin in a problem like this.
I want to make a 2D game which involves displaying some debug information. Especially for collision, enemy sights and so on ...
First of I was thinking about all those shapes which I need will need for debugging purposes: circles, rectangles, lines, polygons.
I am really stucked right now because of the fundamental question:
Where do I store my vertices positions for each line (object)? Currently I am not using a model matrix because I am using orthographic projection and set the final position within the VBO. That means that if I add a new line I would have to expand the "points" array and re-upload (recall glBufferData) it every time. The other method would be to use a model matrix and a fixed vbo for a line but it would be also messy to exactly create a line from (0,0) to (100,20) calculating the rotation and scale to make it fit.
If I proceed with option 1 "updating the array each frame" I was thinking of having 4 draw calls every frame for the lines vao, polygons vao and so on.
In addition to that I am planning to use some sort of ECS based architecture. So the other question would be:
Should I treat those debug objects as entities/components?
For me it would make sense to treat them as entities but that's creates a new issue with the previous array approach because it would have for example a transform and render component. A special render component for debug objects (no texture etc) ... For me the transform component is also just a matrix but how would I then define a line?
Treating them as components would'nt be a good idea in my eyes because then I would always need an entity. Well entity is just an id !? So maybe its a component?