2021-02-20 00:17:50 +08:00
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from decimal import Decimal as De
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2021-02-20 00:30:25 +08:00
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a = False
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if a:
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tick_time, velocity, height = De('0'), De('0'), De('0')
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m = De('4610025')
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gravity = De('9.798')
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R = De('637100')
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n = De('0.5943466')
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H = De('70000')
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F = De('208201000')
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else:
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tick_time, velocity, height = 0, 0, 0
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m = 4610025
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gravity = 9.798
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R = 637100
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n = 0.5943466
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H = 70000
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F = 208201000
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2021-02-20 00:17:50 +08:00
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TPS = 20
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MSPT = 1 / TPS
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while True: # 主tick循环
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# 基础加速度运算
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2021-02-20 00:30:25 +08:00
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add_speed = (F / m) - ((gravity * (R ** 2)) / ((R + height) ** 2))
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2021-02-20 00:17:50 +08:00
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# 出大气层判定
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if height < 70000: # 没出大气 加速度需要减去大气阻力
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add_speed -= (n * (velocity ** 2) * (10 * (-6 * height) / H)) / m
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2021-02-20 00:30:25 +08:00
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height += (MSPT * velocity) # 高度 加 速度除以TPS（tick per second）（每tick加速）
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velocity += (add_speed * MSPT) # 速度 加 加速度除以TPS
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2021-02-20 00:17:50 +08:00
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if tick_time < 192: # 一些我也不知道是什么意思的tick判定
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2021-02-20 00:30:25 +08:00
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m -= (F * MSPT) / 3399.2 # 3399.2是个啥？
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2021-02-20 00:17:50 +08:00
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elif tick_time < 240:
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m -= 129 * MSPT # ??? 129?
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else:
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m -= 4 * MSPT # 4?
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# tick 加时间
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tick_time += MSPT
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if tick_time < 48: # 如果时间没到48秒
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continue
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elif tick_time == 48: # 如果时间到了48秒
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m = 1243700
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F = 44189600
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elif tick_time == 96:
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m = 193125
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F = 8498000
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elif tick_time == 144:
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m = 40875
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F = 1699600
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elif tick_time == 192:
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m = 10225
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F = 446145
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elif tick_time == 240:
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m = 2308
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F = 21245
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elif tick_time >= 567:
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tick_time += ((12308300 - height) / velocity)
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break
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2021-02-20 00:30:25 +08:00
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print('t: %s' % tick_time)
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