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xqm32/gacha.rs

Last active November 15, 2023 05:05
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gacha.rs
use rand::{rngs::ThreadRng, Rng};
const U5C_W: [i32; 90] = [
60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
60, 660, 1260, 1860, 2460, 3060, 3660, 4260, 4860, 5460, 6060, 6660, 7260, 7860, 8460, 9060,
9660, 10260,
];
const U4C_W: [i32; 10] = [510, 510, 510, 510, 510, 510, 510, 510, 5610, 10710];
const U5W_W: [i32; 80] = [
70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70,
70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70,
70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 770, 1470, 2170, 2870, 3570, 4270,
4970, 5670, 6370, 7070, 7770, 8470, 9170, 9870, 10570, 11270, 11970, 12670,
];
const U4W_W: [i32; 10] = [600, 600, 600, 600, 600, 600, 600, 6600, 12600, 18600];
#[derive(Debug, Default, Clone, Copy)]
pub struct Gacha {
// records
pub pulls: usize, // intertwined fates
pub stars: usize, // starglitters
pub chars_up: usize, // 5 star characters up
pub chars_down: usize, // 5 star characters down
pub weaps_up: usize, // 5 star weapons up
pub weaps_down: usize, // 5 star weapons down
// states
u5c_pity: usize, // Up 5 star character pity
u5c_guar: usize, // Up 5 star up character guarantees
u4c_pity: usize, // Up 4 star character pity
u5w_pity: usize, // Up 5 star weapon pity
u5w_guar: usize, // Up 5 star up weapon guarantees
u4w_pity: usize, // Up 4 star weapon pity
}
impl Gacha {
pub fn pull_char(mut self) -> Self {
let mut rng = ThreadRng::default();
self.pulls += 1;
if rng.gen_range(1..=10000) < U5C_W[self.u5c_pity] {
(self.stars, self.u5c_pity, self.u4c_pity) = (self.stars + 5, 0, self.u4c_pity + 1);
match (self.u5c_guar, rng.gen_range(1..=10000)) {
(0, 1..=5000) | (1, _) => {
(self.chars_up, self.u5c_guar) = (self.chars_up + 1, 0);
}
(_, _) => {
(self.chars_down, self.u5c_guar) = (self.chars_down + 1, self.u5c_guar + 1);
}
}
} else if self.u4c_pity >= 10 || rng.gen_range(1..=10000) < U4C_W[self.u4c_pity] {
(self.stars, self.u5c_pity, self.u4c_pity) = (self.stars + 2, self.u5c_pity + 1, 0);
} else {
(self.u5c_pity, self.u4c_pity) = (self.u5c_pity + 1, self.u4c_pity + 1);
}
self
}
pub fn pull_weap(mut self) -> Self {
let mut rng = ThreadRng::default();
self.pulls += 1;
if rng.gen_range(1..=10000) < U5W_W[self.u5w_pity] {
(self.stars, self.u5w_pity, self.u4w_pity) = (self.stars + 5, 0, self.u4w_pity + 1);
match (self.u5w_guar, rng.gen_range(1..=10000)) {
(0, 1..=3750) | (1, 1..=5000) | (2, _) => {
(self.weaps_up, self.u5w_guar) = (self.weaps_up + 1, 0);
}
(_, _) => {
(self.weaps_down, self.u5w_guar) = (self.weaps_down + 1, self.u5w_guar + 1);
}
}
} else if self.u4w_pity >= 10 || rng.gen_range(1..=10000) < U4W_W[self.u4w_pity] {
(self.stars, self.u5w_pity, self.u4w_pity) = (self.stars + 2, self.u5w_pity + 1, 0);
} else {
(self.u5w_pity, self.u4w_pity) = (self.u5w_pity + 1, self.u4w_pity + 1);
}
self
}
}
impl Gacha {
pub fn with_pity(self, up_5_char_pity: usize, up_5_weap_pity: usize) -> Self {
Gacha {
u5c_pity: up_5_char_pity,
u5w_pity: up_5_weap_pity,
..self
}
}
pub fn with_guar(self, up_5_char_guar: usize, up_5_weap_guar: usize) -> Self {
Gacha {
u5c_guar: up_5_char_guar,
u5w_guar: up_5_weap_guar,
..self
}
}
pub fn pull_chars(mut self, mut pulls: usize) -> Self {
pulls += self.pulls;
while self.pulls < pulls {
self = self.pull_char();
}
self
}
pub fn pull_weaps(mut self, mut pulls: usize) -> Self {
pulls += self.pulls;
while self.pulls < pulls {
self = self.pull_weap();
}
self
}
pub fn pull_chars_up(mut self, mut ups: usize) -> Self {
ups += self.chars_up;
while self.chars_up < ups {
self = self.pull_char();
}
self
}
pub fn pull_weaps_up(mut self, mut ups: usize) -> Self {
ups += self.weaps_up;
while self.weaps_up < ups {
self = self.pull_weap();
}
self
}
pub fn pull_up(self, chars_up: usize, weaps_up: usize) -> Self {
self.pull_chars_up(chars_up).pull_weaps_up(weaps_up)
}
}
fn main() {
const TIMES: usize = 10_000;
let mut sum = 0;
for _ in 1..=TIMES {
sum += Gacha::default().pull_up(3, 1).pulls;
}
println!("{}", sum as f32 / TIMES as f32)
}
Raw
gacha_print.rs
use rand::{rngs::ThreadRng, Rng};
const U5C_W: [i32; 90] = [
60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60,
60, 660, 1260, 1860, 2460, 3060, 3660, 4260, 4860, 5460, 6060, 6660, 7260, 7860, 8460, 9060,
9660, 10260,
];
const U4C_W: [i32; 10] = [510, 510, 510, 510, 510, 510, 510, 510, 5610, 10710];
const U5W_W: [i32; 80] = [
70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70,
70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70,
70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 770, 1470, 2170, 2870, 3570, 4270,
4970, 5670, 6370, 7070, 7770, 8470, 9170, 9870, 10570, 11270, 11970, 12670,
];
const U4W_W: [i32; 10] = [600, 600, 600, 600, 600, 600, 600, 6600, 12600, 18600];
#[derive(Debug, Default, Clone, Copy)]
pub struct Gacha {
// records
pub pulls: usize, // intertwined fates
pub stars: usize, // starglitters
pub chars_up: usize, // 5 star characters up
pub chars_down: usize, // 5 star characters down
pub weaps_up: usize, // 5 star weapons up
pub weaps_down: usize, // 5 star weapons down
// states
u5c_pity: usize, // Up 5 star character pity
u5c_guar: usize, // Up 5 star up character guarantees
u4c_pity: usize, // Up 4 star character pity
u5w_pity: usize, // Up 5 star weapon pity
u5w_guar: usize, // Up 5 star up weapon guarantees
u4w_pity: usize, // Up 4 star weapon pity
}
impl Gacha {
pub fn pull_char(mut self) -> Self {
let mut rng = ThreadRng::default();
(self.pulls, self.u5c_pity, self.u4c_pity) =
(self.pulls + 1, self.u5c_pity + 1, self.u4c_pity + 1);
if rng.gen_range(1..=10000) < U5C_W[self.u5c_pity - 1] {
match (self.u5c_guar, rng.gen_range(1..=10000)) {
(0, 1..=5000) | (1, _) => {
println!(" UP CHAR {:4} {:4}", self.pulls, self.u5c_pity);
(self.chars_up, self.u5c_guar) = (self.chars_up + 1, 0);
}
(_, _) => {
println!("DOWN CHAR {:4} {:4}", self.pulls, self.u5c_pity);
(self.chars_down, self.u5c_guar) = (self.chars_down + 1, self.u5c_guar + 1);
}
}
(self.stars, self.u5c_pity) = (self.stars + 5, 0);
} else if self.u4c_pity >= 10 || rng.gen_range(1..=10000) < U4C_W[self.u4c_pity - 1] {
(self.stars, self.u4c_pity) = (self.stars + 2, 0);
}
self
}
pub fn pull_weap(mut self) -> Self {
let mut rng = ThreadRng::default();
(self.pulls, self.u5w_pity, self.u4w_pity) =
(self.pulls + 1, self.u5w_pity + 1, self.u4w_pity + 1);
if rng.gen_range(1..=10000) < U5W_W[self.u5w_pity - 1] {
match (self.u5w_guar, rng.gen_range(1..=10000)) {
(0, 1..=3750) | (1, 1..=5000) | (2, _) => {
println!(" UP WEAP {:4} {:4}", self.pulls, self.u5w_pity);
(self.weaps_up, self.u5w_guar) = (self.weaps_up + 1, 0);
}
(_, _) => {
println!("DOWN WEAP {:4} {:4}", self.pulls, self.u5w_pity);
(self.weaps_down, self.u5w_guar) = (self.weaps_down + 1, self.u5w_guar + 1);
}
}
(self.stars, self.u5w_pity) = (self.stars + 5, 0);
} else if self.u4w_pity >= 10 || rng.gen_range(1..=10000) < U4W_W[self.u4w_pity - 1] {
(self.stars, self.u4w_pity) = (self.stars + 2, 0);
}
self
}
}
impl Gacha {
pub fn with_pity(self, char_pity: usize, weap_pity: usize) -> Self {
Gacha {
u5c_pity: char_pity,
u5w_pity: weap_pity,
..self
}
}
pub fn with_guar(self, char_guar: usize, weap_guar: usize) -> Self {
Gacha {
u5c_guar: char_guar,
u5w_guar: weap_guar,
..self
}
}
pub fn pull_chars(mut self, mut pulls: usize) -> Self {
pulls += self.pulls;
while self.pulls < pulls {
self = self.pull_char();
}
self
}
pub fn pull_weaps(mut self, mut pulls: usize) -> Self {
pulls += self.pulls;
while self.pulls < pulls {
self = self.pull_weap();
}
self
}
pub fn pull_chars_up(mut self, mut ups: usize) -> Self {
ups += self.chars_up;
while self.chars_up < ups {
self = self.pull_char();
}
self
}
pub fn pull_weaps_up(mut self, mut ups: usize) -> Self {
ups += self.weaps_up;
while self.weaps_up < ups {
self = self.pull_weap();
}
self
}
pub fn pull_up(self, chars_up: usize, weaps_up: usize) -> Self {
self.pull_chars_up(chars_up).pull_weaps_up(weaps_up)
}
}
fn main() {
let gacha = Gacha::default().with_pity(58, 13).pull_up(3, 1);
println!("PULL {:4} STAR {:4}", gacha.pulls, gacha.stars);
}
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