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import math
from interval_utils import *
import gui
import random
class Strategy:
def __init__(self, c):
self.target = (0,0)
self.has_target = False
self.target_cell = None
self.color = (0,0,0)
self.c = c
def dist(self, cell):
return math.sqrt((cell.pos[0]-self.c.player.center[0])**2 + (cell.pos[1]-self.c.player.center[1])**2)
def edible(self, cell):
return (cell.is_food) or (cell.mass <= sorted(self.c.player.own_cells, key = lambda x: x.mass)[0].mass * 0.75) and not (cell.is_virus)
def weight_cell(self, cell):
pass
def process_frame(self):
runaway = False
my_smallest = min(map(lambda cell : cell.mass, self.c.player.own_cells))
my_largest = max(map(lambda cell : cell.mass, self.c.player.own_cells))
# enemy/virus avoidance
forbidden_intervals = []
for cell in self.c.world.cells.values():
relpos = ((cell.pos[0]-self.c.player.center[0]),(cell.pos[1]-self.c.player.center[1]))
dist = math.sqrt(relpos[0]**2+relpos[1]**2)
if (not cell.is_virus and dist < 500+2*cell.size and cell.mass > 1.25 * my_smallest) or (cell.is_virus and dist < my_largest and cell.mass < my_largest):
angle = math.atan2(relpos[1],relpos[0])
corridor_halfwidth = math.asin(cell.size / dist)
forbidden_intervals += canonicalize_angle_interval((angle-corridor_halfwidth, angle+corridor_halfwidth))
runaway = True
# wall avoidance
if self.c.player.center[0] < self.c.world.top_left[1]+(self.c.player.total_size*2):
forbidden_intervals += [(0.5*pi, 1.5*pi)]
if self.c.player.center[0] > self.c.world.bottom_right[1]-(self.c.player.total_size*2):
forbidden_intervals += [(0,0.5*pi), (1.5*pi, 2*pi)]
if self.c.player.center[1] < self.c.world.top_left[0]+(self.c.player.total_size*2):
forbidden_intervals += [(pi, 2*pi)]
if self.c.player.center[1] > self.c.world.bottom_right[0]-(self.c.player.total_size*2):
forbidden_intervals += [(0, pi)]
# if there's actually an enemy to avoid:
if (runaway):
# find the largest non-forbidden interval, and run into this direction.
forbidden_intervals = merge_intervals(forbidden_intervals)
allowed_intervals = invert_angle_intervals(forbidden_intervals)
(a,b) = find_largest_angle_interval(allowed_intervals)
runaway_angle = (a+b)/2
runaway_x, runaway_y = (self.c.player.center[0]+int(100*math.cos(runaway_angle))), (self.c.player.center[1]+int(100*math.sin(runaway_angle)))
self.target = (runaway_x, runaway_y)
self.has_target = False
self.target_cell = None
self.color = (255,0,0)
print ("Running away: " + str((runaway_x-self.c.player.center[0], runaway_y-self.c.player.center[1])))
# a bit of debugging information
for i in forbidden_intervals:
gui.draw_arc(self.c.player.center, self.c.player.total_size+10, i, (255,0,255))
# if however there's no enemy to avoid, chase food or jizz randomly around
else:
if self.target_cell != None:
self.target = tuple(self.target_cell.pos)
if self.target_cell not in self.c.world.cells.values() or not self.edible(self.target_cell):
self.target_cell = None
self.has_target = False
print("target_cell does not exist any more")
elif self.target == tuple(self.c.player.center):
self.has_target = False
print("Reached random destination")
if not self.has_target:
food = list(filter(self.edible, self.c.world.cells.values()))
food = sorted(food, key = self.dist)
if len(food) > 0:
self.target = (food[0].pos[0], food[0].pos[1])
self.target_cell = food[0]
self.has_target = True
self.color = (0,0,255)
print("Found food at: " + str(food[0].pos))
else:
rx = self.c.player.center[0] + random.randrange(-400, 401)
ry = self.c.player.center[1] + random.randrange(-400, 401)
self.target = (rx, ry)
self.has_target = True
self.color = (0,255,0)
print("Nothing to do, heading to random targetination: " + str((rx, ry)))
# more debugging
gui.draw_line(self.c.player.center, self.target, self.color)
return self.target
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