非递归公式

From Minecraft Parkour Wiki
This page is a translated version of the page Nonrecursive Movement Formulas and the translation is 100% complete.

由于算术几何序列有明确的公式,我们可以建立非递归函数来计算简单但有用的结果,例如在任一刻上玩家的高度,或者在初始速度与持续时间的基础上计算跳跃的距离。


定义:

  • Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle v_0} 是玩家的初始速度(跳跃之前,Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t_0} 时的速度)
  • Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle t} 是计入的刻数(例如:平地跳跃的持续时间是 t=12,参见 Tiers
  • Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle J} 是“跳跃增益”(疾跑跳跃为 0.3274,斜疾跑跳跃为 0.291924,45°无疾跑跳跃为 1.0……)
  • Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle M} 是跳跃后的移动乘数(45°斜疾跑为 1.3,正常疾跑为 1.274,无疾跑45°为 1.0……)


垂直运动(跳跃)[1.8]

跳跃后的垂直速度(Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t \geq 6}

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle \textrm{V}_Y(t) = 4 \times 0.98^{t-5} - 3.92}


跳跃后的相对高度(Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t \geq 6}

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle \text{Y}_{rel}(t) = \underset{\text{跳 跃 最 高 点}}{\underbrace{197.4 - 217 \times 0.98^5}} + 200 (0.98-0.98^{t-4}) - 3.92 (t-5)}


对于 Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle t<6} 的情况,见下文。


垂直运动(跳跃)[1.9+]

跳跃后的垂直速度(Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t \geq 1}

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle \textrm{V}_Y(t) = 0.42 \times 0.98^{t-1} + 4 \times 0.98^t - 3.92}


跳跃后的相对高度(Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t \geq 0}

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle \textrm{Y}_{rel}(t) = 217 \times (1 - 0.98^t) - 3.92 t}



水平运动(落地跳跃)

假设玩家在跳跃前已经在空中。

疾跑跳跃后的水平速度(Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t \geq 2}

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle \textrm{V}_H(v_0,t) = \frac{0.02 M}{0.09} + 0.6 \times 0.91^t \times \left ( v_0 + \frac{J}{0.91} - \frac{0.02 M}{0.6 \times 0.91 \times 0.09} \right )}


疾跑跳跃距离(Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t \geq 2}

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle \textrm{Dist}(v_0,t) = 1.91 v_0 + J + \frac{0.02 M}{0.09} (t-2) + \frac{0.6 \times 0.91^2}{0.09} \times (1 - 0.91^{t-2}) \times \left ( v_0 + \frac{J}{0.91} - \frac{0.02 M}{0.6 \times 0.91 \times 0.09} \right )}


注意:这些公式对于大多数 Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle v_0} 的值来说都是准确的,但是一些负值会在某个时间点触发速度阈值并重置玩家速度,从而使这些公式不准确。


水平运动(延后跳跃)

假设玩家在跳跃前已经落地(至少在落地后的 1 刻起跳)

疾跑跳跃的水平速度(Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t \geq 2}

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle \textrm{V}^*_H(v_0,t) = \frac{0.02 M}{0.09} + 0.6 \times 0.91^t \times \left ( 0.6 v_0 + \frac{J}{0.91} - \frac{0.02 M}{0.6 \times 0.91 \times 0.09} \right )}


疾跑跳跃距离(Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t \geq 2}

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle \textrm{Dist}^*(v_0,t) = 1.546 v_0 + J + \frac{0.02 M}{0.09} (t-2) + \frac{0.6 \times 0.91^2}{0.09} \times (1 - 0.91^{t-2}) \times \left ( 0.6v_0 + \frac{J}{0.91} - \frac{0.02 M}{0.6 \times 0.91 \times 0.09} \right )}



进阶公式

在周期为 Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle T} 的助跑上连续疾跑跳跃 Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle n} 次后的水平速度(Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle n \geq 0}Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle T \geq 2} )。

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle \textrm{V}^{\,n}_H(v_0,T,n) = \left ( 0.6 \times 0.91^T \right )^n v_0 + \left ( 0.6 \times 0.91^{T-1} J + 0.02M \frac{1 - 0.91^{T-1}}{0.09} \right ) \frac{1- (0.6 \times 0.91^T)^n}{1 - 0.6 \times 0.91^T} }

如果第一次疾跑跳跃为 delay,则 Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\textstyle v_0} 乘以 0.6。