forked from ryanl/missile-defence
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missile_defence.py
executable file
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/
missile_defence.py
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#!/usr/bin/env python
"""
Missile Defence Game
Copyright (C) 2011-2012 Ryan Lothian.
See LICENSE (GNU GPL version 3 or later).
"""
from twisted.internet import reactor
from twisted.internet.task import LoopingCall
import argparse
try:
from pyfixation import VelocityFP
from pyviewx import iViewXClient, Dispatcher
from pyviewx.pygamesupport import Calibrator
eyetrackerSupport = True
except ImportError:
eyetrackerSupport = False
import pygame
import pygame.font
import collections
import numpy
from numpy import array
import math
from maths import size_squared, normalize
import random
from random import uniform
# imports from my files
import background
import projectiles
from background import grad
from cannon import DefenceCannon
from buildings import Buildings, generate_city
class Physics(object):
"""Physics related constants"""
air_resistance = 0.999
gravity = 0.05
wind = 0.0
def __init__(self, game):
self.game = game
self.location_map = collections.defaultdict(list)
def _get_adjacent_projectiles(self, position):
orig_cell = self._get_cell_for(position)
cells = []
for xdiff in [-1, 0, 1]:
for ydiff in [-1, 0, 1]:
new_cell = ((orig_cell[0] + xdiff, orig_cell[1] + ydiff))
if new_cell in self.location_map:
for p in self.location_map[new_cell]:
yield p
def _get_cell_for(self, position):
return tuple(int(x) / 50 for x in position)
def update_location_cache(self):
self.location_map.clear()
for p in self.game.projectiles:
self.location_map[self._get_cell_for(p.position)].append(p)
def position_iterator(self, p):
count = 10
for x in range(0, count + 1):
yield array(p.position) + array(p.velocity) * (x / float(count))
def check_collision(self, p):
for pos in self.position_iterator(p):
if (not p.cannon_fire and
self.game.shield_dome.collision_check(p.position)):
p.exploding = True
p.position = pos # don't hit inside
return
if self.game.buildings.get(pos[0], pos[1]) == 1:
p.exploding = True
p.position = pos # don't hit inside
return
for q in self._get_adjacent_projectiles(pos):
if p is not q and (not p.cannon_fire or not q.cannon_fire):
radius_sum = q.radius + p.radius
radius_sum_sq = radius_sum * radius_sum
diff_vec = array(pos) - array(q.position)
distance_squared = numpy.ma.innerproduct(diff_vec, diff_vec)
if distance_squared <= radius_sum_sq:
if not p.exploding and not p.cannon_fire:
self.game.score += 200
p.exploding = True
if not q.exploding and not q.cannon_fire:
self.game.score += 200
q.exploding = True
return
class ShieldDome(object):
def __init__(self, resolution):
self.size = (resolution[0] * 4 / 5, resolution[1] / 3)
self.resolution = resolution
self.tmpsurface = pygame.Surface(self.resolution, flags=pygame.SRCALPHA)
self.draw_rect = (((self.resolution[0] - self.size[0]) / 2,
self.resolution[1] - self.size[1]),
((self.resolution[0] + self.size[0]) / 2,
self.resolution[1] + self.size[1] * 2))
self.bright = 0
self.health = 10
self.draw_to_tmpsurface()
def draw_to_tmpsurface(self):
opacity = 20 + self.health * 3
if opacity > 150:
opacity = 150
edge_colour = (255, 120, 255, opacity + self.bright)
pygame.draw.ellipse(self.tmpsurface, edge_colour,
((0,0), (self.size[0], self.size[1] * 3)))
border = 4
pygame.draw.ellipse(self.tmpsurface, (200, 50, 200, opacity),
((border,border), (self.size[0]-border * 2,
self.size[1] * 3 - border * 2)))
def is_online(self):
return self.health > 0
def draw(self, surface):
if self.is_online():
self.draw_to_tmpsurface()
surface.blit(self.tmpsurface, self.draw_rect[0])
if self.bright > 0:
self.bright -= 1
def collision_check(self, (x,y)):
if not self.is_online():
return False
else:
x_centre = (self.draw_rect[0][0] + self.draw_rect[1][0]) / 2
y_centre = (self.draw_rect[0][1] + self.draw_rect[1][1]) / 2
width = (self.draw_rect[1][0] - self.draw_rect[0][0])
height = (self.draw_rect[1][1] - self.draw_rect[0][1])
x_diff = (x - x_centre) / (width / 2)
y_diff = (y - y_centre) / (height / 2)
hit = ((x_diff * x_diff) + (y_diff * y_diff)) <= 1
if hit:
self.bright += 15
if self.bright > 70: self.bright = 70
self.health -= 1
return hit
class MissileDefenceGame(object):
if eyetrackerSupport:
d = Dispatcher()
def reset(self):
self.background = background.StarryBackground(self.resolution)
self.physics = Physics(self)
self.cannon = DefenceCannon(centre=(self.resolution[0] / 2,
self.resolution[1] - 99),
game=self)
self.buildings = Buildings(generate_city(self.resolution),
self.resolution)
self.firing = False
self.fixation_firing = False
self.fire_cycle = 0
self.shield_dome = ShieldDome(self.resolution)
self.shield_dome.health = 2
self.missile_threshold = 0.01
self.projectiles = []
self.initial_buildings_sum = self.get_buildings_sum()
self.buildings_sum = self.initial_buildings_sum
self.score = 0
self.fix = None
self.samp = 0
def __init__(self, args):
self.args = args
self.buildings_colour = (0,0,10) # blue-black
self.auto_mode = False
self.projectiles = []
self.tick_count = 0
pygame.init()
pygame.surfarray.use_arraytype("numpy")
# self.score_font = pygame.font.Font(pygame.font.get_default_font(), 20)
self.score_font = pygame.font.Font(pygame.font.match_font("Monospace", True), 20)
self.screen = pygame.display.set_mode((0,0), pygame.FULLSCREEN)
surf = self.screen.get_rect()
self.resolution = (surf.width, surf.height)
self.buildings_surface = pygame.Surface(self.resolution, 0, 8)
self.buildings_surface.set_palette(((0,0,0), self.buildings_colour))
self.buildings_surface.set_colorkey(0, pygame.RLEACCEL)
self.reset()
if self.args.eyetracker:
self.client = iViewXClient( self.args.eyetracker, 4444 )
self.client.addDispatcher( self.d )
self.fp = VelocityFP()
self.calibrator = Calibrator( self.client, self.screen, reactor = reactor )
def generate_missile(self):
p = projectiles.Missile(position=(uniform(-500, self.resolution[0] + 500), -50),
velocity=(uniform(-3, 3),
uniform(2, 7)))
count = 0
while p.position[1] < -20 and count < 100:
p.apply_physics(self.physics, self.buildings)
count += 1
return p
def handle_events(self):
force_fire = False
for event in pygame.event.get():
if event.type == pygame.QUIT:
self.quit()
elif event.type == pygame.KEYDOWN and event.key == ord("q"):
self.quit()
elif event.type == pygame.KEYDOWN and event.key == ord("s"): # screenshot
pygame.image.save(self.screen, "screenshot.png")
elif event.type == pygame.KEYDOWN and event.key == ord("a"): # auto mode
self.auto_mode = not self.auto_mode
elif event.type == pygame.KEYDOWN and event.key == ord("r"): # reset
self.reset()
elif event.type == pygame.KEYDOWN and event.key == ord("d"):
self.shield_dome.health += 20
elif event.type == pygame.MOUSEBUTTONDOWN:
force_fire = True # fire event if there was a mouse up too
self.fire_cycle = 0
self.firing = True
elif event.type == pygame.MOUSEBUTTONUP:
self.firing = False
stuff_nearby = any(
size_squared(array(p.position) - array(self.cannon.centre)) < p.radius * p.radius
for p in self.projectiles)
if not self.auto_mode:
self.cannon.target = array(pygame.mouse.get_pos())
if not stuff_nearby:
if self.auto_mode and self.cannon.can_fire():
valid_targets = [p for p in self.projectiles if
p.position[0] > 0 and p.position[1] > 0 and
p.position[0] < self.resolution[0] and
p.position[1] < self.resolution[1] - 300 and
p.velocity[1] > 0 and not p.exploding]
if len(valid_targets) > 0:
target = random.choice(valid_targets)
target_pos = array(target.position) + array(target.velocity) * 4
self.cannon.fire(target_pos)
self.cannon.target = target_pos
elif self.firing or force_fire:
self.cannon.fire(pygame.mouse.get_pos())
def get_buildings_sum(self):
# restart if most of the buildings are destroyed and no explosions in progress
sum = 0
for y in range(self.resolution[1] - 100, self.resolution[1]):
sum += numpy.ma.sum(self.buildings.pixeldata[y])
return sum
def draw(self, intro=False):
self.background.draw(self.screen)
pygame.surfarray.blit_array(self.buildings_surface,
self.buildings.pixeldata)
self.screen.blit(self.buildings_surface, (0,0))
self.shield_dome.draw(self.screen)
for p in self.projectiles:
p.draw(self.screen)
self.cannon.draw(self.screen)
# draw score
score_surf = self.score_font.render(format(self.score, "08"), True, (255,255,255))
self.screen.blit(score_surf, (30, 30))
pygame.display.flip()
def apply_physics(self):
self.physics.update_location_cache()
projectiles_keep = []
# process projectiles
for p in self.projectiles:
p.apply_physics(self.physics, self.buildings)
# keep any projectiles that aren't destroyed/off-screen
if not p.is_garbage(self.resolution):
projectiles_keep.append(p)
self.projectiles = projectiles_keep
self.buildings.apply_physics()
self.cannon.apply_physics()
def refresh(self):
self.handle_events()
self.tick_count += 1
if self.tick_count % 100 == 0:
self.background.darken()
if self.tick_count % 30 == 0:
self.buildings_sum = self.get_buildings_sum()
if float(self.buildings_sum) / self.initial_buildings_sum < 0.2:
self.reset()
self.score += 100
# randomly add more projectiles
self.missile_threshold += 0.0001
m = self.missile_threshold
while m > 0:
m -= random.random()
if m > 0:
self.projectiles.append(self.generate_missile())
self.apply_physics()
self.draw()
def start( self, lc, results):
self.lc = LoopingCall( self.refresh )
cleanupD = self.lc.start( 1.0 / 30 )
cleanupD.addCallbacks( self.quit )
def run( self ):
if self.args.eyetracker:
reactor.listenUDP( 5555, self.client )
self.calibrator.start( self.start )
else:
self.start( None )
reactor.run()
def quit( self, lc=None ):
reactor.stop()
if eyetrackerSupport:
@d.listen( 'ET_SPL' )
def iViewXEvent( self, inSender, inEvent, inResponse ):
t = int( inResponse[0] )
x = float( inResponse[2] )
y = float( inResponse[4] )
ex = numpy.mean( ( float( inResponse[10] ), float( inResponse[11] ) ) )
ey = numpy.mean( ( float( inResponse[12] ), float( inResponse[13] ) ) )
ez = numpy.mean( ( float( inResponse[14] ), float( inResponse[15] ) ) )
dia = int( inResponse[6] ) > 0 and int( inResponse[7] ) > 0 and int( inResponse[8] ) > 0 and int( inResponse[9] ) > 0
self.fix, self.samp = self.fp.processData( t, dia, x, y, ex, ey, ez )
if self.fix:
if not self.fixation_firing and self.samp > 100:
self.fixation_firing = True
self.cannon.fire(self.fix)
else:
self.fixation_firing = False
if __name__ == "__main__":
parser = argparse.ArgumentParser( formatter_class = argparse.ArgumentDefaultsHelpFormatter )
if eyetrackerSupport:
parser.add_argument( '-e', '--eyetracker', action = "store", dest = "eyetracker", help = 'IP address of iViewX server.' )
args = parser.parse_args()
if not hasattr( args, 'eyetracker' ):
setattr( args, 'eyetracker', None )
game = MissileDefenceGame(args)
game.run()