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fixed share token calculation and bond redemption -> 100% stability #1

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fixed share token calculation and bond redemption -> 100% stability #1

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8 changes: 4 additions & 4 deletions basecoin-sim.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,29 +29,29 @@ def compute_bond_price(state):

def increase_supply(exchange_rate, state):
# Number of newly minted coins
supply_delta = int(TOTAL_SUPPLY * (exchange_rate - 1))
supply_delta = int(state['coin_supply'] * (exchange_rate - 1))

state['coin_supply'] += supply_delta
# Pay bonds
while supply_delta > 0 and len(state['bond_queue']) > 0:
next_bond_tuple = state['bond_queue'].pop(0)
t, amount = next_bond_tuple
if amount > supply_delta:
supply_delta = 0
state['bond_queue'].insert(0, (t, amount - supply_delta))
supply_delta = 0
else:
supply_delta -= amount

# Pay dividends to shareholders
if supply_delta > 0:
state['shareholder_coins'] = supply_delta
state['shareholder_coins'] += supply_delta

return state


def decrease_supply(exchange_rate, state):
# Number of coins to auction/burn
supply_delta = int(TOTAL_SUPPLY * (1 - exchange_rate))
supply_delta = int(state['coin_supply'] * (1 - exchange_rate))
bond_price = compute_bond_price(state)
state['bond_queue'].append((state['t'], int(supply_delta / bond_price)))
state['coin_supply'] -= supply_delta
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