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World.py
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World.py
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from Cell import Cell
import random
from Constants import *
class World:
def __init__(self, width=25, height=25, initialPopulation=None, nTeams=2):
self.width = width
self.height = height
self.map = [[None for _ in range(self.width)] for _ in range(self.height)]
self.initialPopulation = initialPopulation if initialPopulation else width
self.cells = []
self.teams = []
self.epoch = -1
for color in colors:
self.teams.append(color)
if len(self.teams) == nTeams:
break
self.populations = {team: 0 for team in self.teams}
self.actions = {team: {'wait': 0, 'move': 0, 'mate': 0, 'attack': 0, 'changeTeam': 0, 'none': 0} for team in self.teams}
while len(self.cells) < self.initialPopulation:
row = random.randint(0, self.height - 1)
col = random.randint(0, self.width - 1)
team = random.choice(self.teams)
if self.empty(row, col):
self.cells.append(Cell(team, row, col))
self.set(row, col, self.cells[-1]) # Map is synced with cells and shares objects
self.populations[team] += 1
def get(self, row, col):
return self.map[row % self.height][col % self.width]
def set(self, row, col, newValue):
self.map[row % self.height][col % self.width] = newValue
def empty(self, row, col):
return self.get(row, col) == None
def spawn(self, row, col, parents):
team = parents[0].team
self.cells.append(Cell(team, row, col, parents=parents))
self.set(row, col, self.cells[-1]) # Keep map synced
self.populations[team] += 1
def kill(self, index):
cell = self.cells[index]
self.populations[cell.team] -= 1
self.set(cell.row, cell.col, None) # Keep map synced
del self.cells[index]
def step(self):
# Use an independent list to avoid modifying inside a loop
cellIndexList = list(range(len(self.cells)))
# Ensure random decision order
random.shuffle(cellIndexList)
for cellIndex in cellIndexList:
cell = self.cells[cellIndex]
if cell.isAlive(): # Some cells may have been killed by a neighbour
emptyNeighbours = 0
friendNeighbours = 0
foeNeighbours = 0
environment = []
# Environment
for rowDelta in [-1, 0, 1]:
for colDelta in [-1, 0, 1]:
if (rowDelta == 0 and colDelta == 0): # Skip self position
environment.append('me')
else:
neighbour = self.get(cell.row + rowDelta, cell.col + colDelta)
if neighbour == None or not neighbour.isAlive():
emptyNeighbours += 1
environment.append('empty')
else:
if neighbour.team == cell.team:
friendNeighbours += 1
environment.append('friend')
else:
foeNeighbours += 1
environment.append('foe')
# Death by overpopulation
if (friendNeighbours + foeNeighbours) > neighbourLimit:
cell.lifePoints = 0
continue
# Action selection
action, targetPositionDelta, spawnPositionDelta = cell.selectAction(environment)
targetPosition = ((cell.row + targetPositionDelta[0]) % self.height, (cell.col + targetPositionDelta[1]) % self.width)
target = self.get(targetPosition[0], targetPosition[1])
spawnPosition = ((cell.row + spawnPositionDelta[0]) % self.height, (cell.col + spawnPositionDelta[1]) % self.width) if spawnPositionDelta else None
self.actions[cell.team][action] += 1
if action == 'wait':
pass
elif action == 'move':
cell.row = targetPosition[0]
cell.col = targetPosition[1]
elif action == 'mate':
cell.lifePoints -= cellMatingCost
self.spawn(spawnPosition[0], spawnPosition[1], parents=(cell, target))
elif action == 'attack':
lifeDelta = min((target.lifePoints, cell.lifePoints))
cell.lifePoints -= lifeDelta
target.lifePoints -= lifeDelta
elif action == 'changeTeam':
self.populations[cell.team] -= 1
self.populations[target.team] += 1
cell.team = target.team
# Clean dead cells
deletionList = []
for i in range(len(self.cells)):
if not self.cells[i].isAlive():
deletionList.append(i)
for i in sorted(deletionList, reverse=True):
self.kill(i)
# Increase epoch
self.epoch += 1
# Count actions of living cells
self.actions = {team: {'wait': 0, 'move': 0, 'mate': 0, 'attack': 0, 'changeTeam': 0, 'none': 0} for team in self.teams}
totalActions = {'wait': 0, 'move': 0, 'mate': 0, 'attack': 0, 'changeTeam': 0, 'none': 0}
for cell in self.cells:
self.actions[cell.team][cell.lastAction] += 1
totalActions[cell.lastAction] += 1
if logData:
print(f"Epoch {self.epoch:>5} cells: {len(self.cells):>5} "
f"waits: {totalActions['wait']:>5} moves: {totalActions['move']:>5} "
f"mates: {totalActions['mate']:>5} attacks: {totalActions['attack']:>5} "
f"changeTeams: {totalActions['changeTeam']:>4} none: {totalActions['none']:>5}")