88 lines
3.1 KiB
Python
88 lines
3.1 KiB
Python
import gameio
|
|
import cv2
|
|
import numpy as np
|
|
|
|
def squared_distance(vec1, vec2):
|
|
"""returns distance-squared between two x, y point tuples"""
|
|
return (vec1[0] - vec2[0])**2 + (vec1[1] - vec2[1])**2
|
|
|
|
class GameModel:
|
|
"""Platform-independent representation of the game's state."""
|
|
def __init__(self, io:gameio.AbstractGameIO):
|
|
self.gameio = io
|
|
self.asteroids = [
|
|
("big", cv2.imread("images/game_assets/rock-big.png", 0)),
|
|
("normal", cv2.imread("images/game_assets/rock-normal.png", 0)),
|
|
("small", cv2.imread("images/game_assets/rock-small.png", 0))
|
|
]
|
|
self.frame = None
|
|
self.cv_template_thresh = 0.6 # reconfigurable at runtime
|
|
self.duplicate_dist_thresh = 10
|
|
|
|
def with_frame(fn):
|
|
"""Decorator to process screenshot to cv2 format once upon first requirement, then reuse."""
|
|
def inner(self, *args, **kwargs):
|
|
if self.frame is None:
|
|
print("Fetching frame.")
|
|
sshot = self.gameio.fetch_sshot()
|
|
open_cv_image = np.array(sshot)
|
|
# Convert RGB to BGR
|
|
self.frame = open_cv_image[:, :, ::-1].copy()
|
|
self.frame = cv2.cvtColor(self.frame, cv2.COLOR_BGR2GRAY)
|
|
return fn(self, *args, **kwargs)
|
|
return inner
|
|
|
|
def clear_frame(self):
|
|
self.frame = None
|
|
|
|
@with_frame
|
|
def find_asteroids(self):
|
|
asteroid_rects = []
|
|
for label, a in self.asteroids:
|
|
h, w = a.shape
|
|
res = cv2.matchTemplate(self.frame, a, cv2.TM_CCOEFF_NORMED)
|
|
loc = np.where( res >= self.cv_template_thresh)
|
|
for pt in zip(*loc[::-1]):
|
|
if not asteroid_rects or squared_distance(asteroid_rects[-1][0], pt) > self.duplicate_dist_thresh:
|
|
asteroid_rects.append((pt, (pt[0] + w, pt[1] + h), label))
|
|
return asteroid_rects
|
|
|
|
@with_frame
|
|
def display_results(self, results):
|
|
"""Draws results on the current frame for test purposes."""
|
|
displayable = np.copy(self.frame)
|
|
for pt, wh, label in results:
|
|
cv2.rectangle(displayable, pt, wh, 255, 1)
|
|
cv2.putText(displayable, label, pt,
|
|
cv2.FONT_HERSHEY_PLAIN,
|
|
1.0, 255)
|
|
cv2.imshow("Results", displayable)
|
|
cv2.waitKey(0)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
import platform
|
|
|
|
if platform.system() == "Windows":
|
|
io = gameio.WindowsGameIO()
|
|
# TODO: Detect OSX or show a message of sadness
|
|
|
|
else:
|
|
io = gameio.LinuxGameIO()
|
|
|
|
#input("Press <enter> to locate the game at the start screen.")
|
|
gm = GameModel(io)
|
|
|
|
# for testing purposes, populating window location at top-left of my screen
|
|
# io.loc is None when the title screen isn't found.
|
|
# manually setting io.loc crops all screenshots as if the title was found.
|
|
import pyscreeze
|
|
io.loc = pyscreeze.Box(0, 25, 800, 599)
|
|
|
|
#input("Press <enter> to detect asteroids on screen.")
|
|
results = gm.find_asteroids()
|
|
print(f"Found {len(results)} asteroids")
|
|
for a in results:
|
|
print(a[0]) # position tuple
|
|
gm.display_results(results)
|