I am having a hard time coming up with the right pictograms.
I am making a video game that features simulated industries, like mines, smelters, sawmills, bakeries, and so on.
And I need to annotate the map of the world with these industries in such a way that I can show the state of the supply chain.
A concrete example: if you consider the smelter, which takes as input coal plus iron-ore, and produces steel.
I need to convey three different situations:
- The factory is low on ingredients (coal/ore) and is throttled.
- The factory's product inventory (steel) is full and is throttled.
- The factory is running satisfactory: there is neither a supply shortage, nor a build up of superfluous inventory.
So: SUPPLY INVENTORY LOW, PRODUCT INVENTORY FULL or FULLY OPERATIONAL.
But I want to use pictograms, not words to show the state of all the factories on the map.
Any ideas on how to depict these states? Or is there an online resource like a pictogram database that lets you search for concepts and their associated pictograms?