Tracking: Economy rework

Citing !2547 (closed)

Benefits:

• Overhauled economic simulation to match this year's crafting system (the old system was designed to match last year's content; this shows in strange prices)
• Biome specific tech trees and goods (e.g. food and housing)
• Correct planning of the number of Merchants needed to buy missing goods (currently broken, got worse with this year's map change)
• Matrix based optimization algorithms replace the old map based code (in progress)

Long term goals:

• Biome specific houses, population and gear in towns (the economy determines what is available in which quantities)
• Profession assignment for NPCs (working, idle, daytime dependent activities etc)

Status

• The new Assignment system works well (although it is not as clever about alternative production options as it could be (e.g. stone house versus hut))
• The mapping to items is work in progress.
• parallelizing econ simulation (multiple threads)
• another test (can a town in woodlands/… sustain people?)
• weighted sum for labor_value (no longer None once it gets not produced)
• debugging information why each profession is non-productive (starvation)

In review

Open issues of the rewrite ("shredded economy"):

• implement proper delta time
• properly value trade (correct cost/benefit calculation)
• avoid overproduction / faster convergence and no-overproduction due to minimizing quadratic error
• compute natural resources from wildlife+loot
• re-implement tools (reusable Goods)
• re-implement equivalences (e.g. bone+skin for buildings)
• removing copies and caching internals (speedup) (partially done
• specifying decay rate etc. in a ron file

Later

• specifying econsim Good amounts in each item.ron