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import random |
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import numpy as np |
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from scipy.misc import imresize |
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import random |
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import numpy as np |
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from scipy.ndimage import rotate |
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from scipy.misc import imresize |
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from matplotlib import pyplot as plt |
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class CatchEnv2: |
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def __init__(self): |
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self.size = 21 |
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self.image = np.zeros((self.size, self.size)) |
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self.state = [] |
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self.fps = 4 |
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self.output_shape = (84, 84) |
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def reset_random(self): |
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self.image.fill(0) |
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self.pos = np.random.randint(2, self.size-2) |
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self.vx = np.random.randint(5) - 2 |
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self.vy = 1 |
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self.ballx, self.bally = np.random.randint(self.size), 4 |
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self.image[self.bally, self.ballx] = 1 |
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self.image[-5, self.pos - 2:self.pos + 3] = np.ones(5) |
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for i in range(0, self.size): |
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for j in range(0, self.size): |
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self.image[i][j] = random.randint(2,5) |
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return self.step(2)[0] |
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def step(self, action): |
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def left(): |
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if self.pos > 3: |
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self.pos -= 2 |
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def right(): |
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if self.pos < 17: |
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self.pos += 2 |
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def noop(): |
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pass |
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{0: left, 1: right, 2: noop}[action]() |
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self.image[self.bally, self.ballx] = 0 |
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self.ballx += self.vx |
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self.bally += self.vy |
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if self.ballx > self.size - 1: |
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self.ballx -= 2 * (self.ballx - (self.size-1)) |
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self.vx *= -1 |
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elif self.ballx < 0: |
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self.ballx += 2 * (0 - self.ballx) |
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self.vx *= -1 |
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self.image[self.bally, self.ballx] = 1 |
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self.image[-5].fill(random.randint(2,5)) |
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self.image[-5, self.pos-2:self.pos+3] = np.ones(5) |
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terminal = self.bally == self.size - 1 - 4 |
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reward = int(self.pos - 2 <= self.ballx <= self.pos + 2) if terminal else 0 |
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[self.state.append(imresize(self.image, (84, 84))) for _ in range(self.fps - len(self.state) + 1)] |
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self.state = self.state[-self.fps:] |
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return np.transpose(self.state, [1, 2, 0]), reward, terminal |
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def get_num_actions(self): |
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return 3 |
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def reset(self): |
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return self.reset_random() |
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def state_shape(self): |
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return (self.fps,) + self.output_shape |
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def show_state(self, i): |
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plt.imshow(self.image) |
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plt.imsave('image_'+str(i)+'.jpg', self.image) |
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def test(): |
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env = CatchEnv2() |
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i = 0 |
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for ep in range(1): |
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env.reset() |
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env.show_state(i) |
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state, reward, terminal = env.step(1) |
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while not terminal: |
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env.show_state(i) |
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state, reward, terminal = env.step(np.random.randint(0,2)) |
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i += 1 |
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if __name__ == "main": |
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test() |
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