I need to create a 3D large terrain (say 2000x2000) where I need to track properties of the terrain surface at 1x1 resolution. For example, I want to keep track of how much grass or stones is in 1x1 area, which may change as game progresses depending on resource consumption. Based on that I want change visual appearance of that 1x1 area. What are my options?
While I have created a 1x1 tile that tracks above properties, I have read it may not scale for the size of my terrain. Also, aligning each title with varying terrain heights (I expect terrain to have smooth height changes but it may not exceed a few 10s of units) using projection is not easy. I see placing a grid over terrain as another option to place objects. But not sure how to track properties at each grid cell or update 1x1 terrain area at that point.