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better distribution with fibbonachi

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This commit is contained in:
David Westgate 2025-03-09 14:30:45 -07:00
parent 1216e76381
commit f04496bf24
1 changed files with 53 additions and 44 deletions
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97
components/ChipDistributionSummary.tsx
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@ -1,5 +1,5 @@
import React, { useCallback, useEffect, useMemo, useState } from "react";
import { View, Text, StyleSheet } from "react-native";
import { View, Text } from "react-native";
import { ColorValue } from "react-native";
import i18n from "@/i18n/i18n";
import styles from "@/styles/styles";
@ -22,7 +22,7 @@ const ChipDistributionSummary = ({
selectedCurrency = "$",
}: ChipDistributionSummaryProps) => {
const validDenominations: validDenomination[] = [
0.05, 0.1, 0.25, 0.5, 1, 2, 2.5, 5, 10, 20, 50, 100,
0.05, 0.1, 0.25, 1, 5, 10, 20, 50, 100,
];
const [denominations, setDenominations] = useState<validDenomination[]>([]);
const [distributions, setDistributions] = useState<number[]>([]);
@ -38,26 +38,38 @@ const ChipDistributionSummary = ({
| 5
| 10
| 20
| 25
| 50
| 100;
const findFloorDenomination = (target: number): validDenomination => {
let current: validDenomination = validDenominations[0];
validDenominations.forEach((value, index) => {
validDenominations.forEach((value, _) => {
if (value < target) current = value;
});
return current;
};
// Bound for the value of the highest chip
// This is somewhat arbitray, but 1/3 to 1/4 is reasonable depending on the number of colors.
const maxDenomination = useMemo(() => {
if (totalChipsCount.length > 3) {
return findFloorDenomination(buyInAmount / 3);
} else {
return findFloorDenomination(buyInAmount / 4);
// This is somewhat arbitray and imperfect, but 1/3 to 1/5 is reasonable depending on the number of colors.
const maxDenomination: validDenomination = useMemo(() => {
let max: validDenomination;
switch (totalChipsCount.length) {
case 5:
case 4:
max = findFloorDenomination(buyInAmount / 3);
break;
case 3:
max = findFloorDenomination(buyInAmount / 4);
break;
case 2:
case 1:
default:
max = findFloorDenomination(buyInAmount / 5);
break;
}
}, [totalChipsCount]);
return max;
}, [totalChipsCount, buyInAmount]);
const potValue = useMemo(
() => buyInAmount * playerCount,
@ -67,7 +79,7 @@ const ChipDistributionSummary = ({
// The total value of all chips distributed to a single player. Ideally should be equal to buyInAmount
const totalValue = useMemo(() => {
let value = 0;
for (let i = 0; i < totalChipsCount.length; i++) {
for (let i = 0; i < distributions.length; i++) {
value += distributions[i] * denominations[i];
}
return value;
@ -81,7 +93,7 @@ const ChipDistributionSummary = ({
// Redenominate the chips in case of failure to properly distribute.
// Move the shuffle index to the next lowest denomination, and keep all else same
const redenominate = useCallback(
const _redenominate = useCallback(
(
invalidDenomination: validDenomination[],
shuffleIndex: number
@ -113,56 +125,53 @@ const ChipDistributionSummary = ({
// Dynamically set denominations and distributions from changing inputs
useEffect(() => {
let testDenomination: validDenomination[] = [];
const numColors = totalChipsCount.length;
const testDistribution: number[] = [];
for (let i = 0; i < numColors; ++i) {
testDistribution.push(0);
}
const totalNumColors = totalChipsCount.length;
// Start with max denominations, then push on the next adjacent lower denomination
testDenomination.push(maxDenomination);
let currentDenominationIndex: number =
validDenominations.indexOf(maxDenomination);
for (let i = numColors - 2; i >= 0; i = i - 1) {
for (
let i = totalNumColors - 2;
i >= 0 && currentDenominationIndex > 0;
i = i - 1
) {
currentDenominationIndex -= 1;
const currentDemoniation = validDenominations[currentDenominationIndex];
testDenomination.push(currentDemoniation);
}
testDenomination.reverse();
let numColors = testDenomination.length;
const testDistribution: number[] = [];
for (let i = 0; i < numColors; ++i) {
testDistribution.push(0);
}
// Distribute the chips using the test denomination
// If distribution fails to equal the buy-in, redenominate and re-try
// Algorithm could be improved with more complexity and optimization
let remainingValue = buyInAmount;
let fail = true;
let failCount = 0;
while (fail && failCount < 1) {
let stop = false;
while (remainingValue > 0 && !stop) {
let distributed = false;
for (let i = numColors - 1; i >= 0; i = i - 1) {
if (testDistribution[i] < maxPossibleDistribution[i]) {
if (remainingValue >= testDenomination[i]) {
testDistribution[i] = testDistribution[i] + 1;
remainingValue = remainingValue - testDenomination[i];
distributed = true;
}
let stop = false;
while (remainingValue > 0 && !stop) {
let distributed = false;
for (let i = numColors - 1; i >= 0; i = i - 1) {
if (testDistribution[i] < maxPossibleDistribution[i]) {
for (
let j = reverseFib[i];
j > 0 && remainingValue >= testDenomination[i];
j = j - 1
) {
testDistribution[i] = testDistribution[i] + 1;
remainingValue = remainingValue - testDenomination[i];
distributed = true;
}
}
if (distributed == false) {
stop = true;
}
}
if (remainingValue !== 0) {
const redenominateIndex = failCount % numColors;
testDenomination = redenominate(testDenomination, redenominateIndex);
failCount += 1;
fail = true;
} else {
fail = false;
if (distributed == false) {
stop = true;
}
}
setDenominations(testDenomination);
setDistributions(testDistribution);
}, [totalChipsCount, maxDenomination, buyInAmount, playerCount]);
@ -170,7 +179,7 @@ const ChipDistributionSummary = ({
return (
<>
<View style={styles.container}>
{totalChipsCount.map((_, index) => (
{denominations.map((denomination, index) => (
<View style={{ flexDirection: "row" }} key={index}>
<Text
style={{
@ -180,7 +189,7 @@ const ChipDistributionSummary = ({
...(colors[index] === "white" && styles.shadow),
}}
>
{`${distributions[index]} ${i18n.t("chips")}: ${selectedCurrency}${denominations[index]} ${i18n.t("each")}`}
{`${distributions[index]} ${i18n.t("chips")}: ${selectedCurrency}${denomination} ${i18n.t("each")}`}
</Text>
</View>
))}