Backend Design.md

Backend Design

Constants

• loosingInfectionRate (70%, game end)
• deathRateAboveICU
• deathRateBelowICU
• startRegions
  • which regions
  • infected population per region
• startReproducion rate
• dailyIncome
• initialIncome
• initialHappiness

Entities

GlobalState

• money
• clock (week/round counter)
• activeActions

Region

• totalPopulation (constant)
• infectedPopulation
• reproductionRate
• maxICU (Intensivkapazität, Threshold ab dem Sterblichkeit steigt)
• happiness (percent)

Measure

• cost (money)
• fn apply(state)
• successProbabilty

Event

• fn apply(state)
• duration
• warnPlayer

ScheduledGameEvent: GameEvent

• whichTick

RandomGameEvent: GameEvent

• probability

Game Loop

• input: user chosen action
• increment clock
• apply measures
• apply effects of game events (eg. random infections)
• calculate new infections based on infectedPopulation and reproductionRate for every region
  • newInfections = (new infections from last round) * reproductionRate * modifier
  • infectedPopulation += newInfections
• calculate deaths
  • deaths += min(newInfections, maxICU) * deathRateBelowICU
  • if newInfections > maxICU:
    • deaths += (newInfections - maxICU) * deathRateAboveICU
• check loosing condition
• output