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match_collector: track gold advantage when items are bought

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also add api.ts with Riot API types
This commit is contained in:
Valentin Haudiquet
2026-04-17 10:51:21 +02:00
parent 19a9226dac
commit b7435f0884
3 changed files with 275 additions and 43 deletions
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109
match_collector/champion_stat.ts
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@@ -1,14 +1,7 @@
function sameArrays(array1: Array<number>, array2: Array<number>) {
if (array1.length != array2.length) return false
for (const e of array1) {
if (!array2.includes(e)) return false
}
return true
}
import { MongoClient } from 'mongodb'
import {
ItemTree,
GoldAdvantageTag,
treeInit,
treeMerge,
treeCutBranches,
@@ -16,6 +9,16 @@ import {
treeMergeTree,
areTreeSimilars
} from './item_tree'
import { Match, Timeline, Participant, Frame } from './api'
function sameArrays(array1: Array<number>, array2: Array<number>) {
if (array1.length != array2.length) return false
for (const e of array1) {
if (!array2.includes(e)) return false
}
return true
}
const itemDict = new Map()
async function itemList() {
@@ -107,8 +110,7 @@ type ChampionData = {
}
// Helper function to create rune configuration from participant
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function createRuneConfiguration(participant: any): Rune {
function createRuneConfiguration(participant: Participant): Rune {
const primaryStyle = participant.perks.styles[0].style
const secondaryStyle = participant.perks.styles[1].style
const selections: Array<number> = []
@@ -126,8 +128,7 @@ function createRuneConfiguration(participant: any): Rune {
}
// Find or create a build for the given rune keystone
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function findOrCreateBuild(builds: Builds, participant: any): Build {
function findOrCreateBuild(builds: Builds, participant: Participant): Build {
const keystone = participant.perks.styles[0].selections[0].perk
const runeConfig = createRuneConfiguration(participant)
@@ -166,24 +167,71 @@ function findOrCreateBuild(builds: Builds, participant: any): Build {
return newBuild
}
// Calculate gold advantage at the time of item purchase
// Returns 'ahead', 'behind', or 'even' based on gold difference
function calculateGoldAdvantage(
match: Match,
frame: Frame,
participantIndex: number
): GoldAdvantageTag {
const GOLD_THRESHOLD = 1000 // 1000 gold difference threshold
const participantFrames = [
frame.participantFrames[1],
frame.participantFrames[2],
frame.participantFrames[3],
frame.participantFrames[4],
frame.participantFrames[5],
frame.participantFrames[6],
frame.participantFrames[7],
frame.participantFrames[8],
frame.participantFrames[9],
frame.participantFrames[10]
]
// Find the participant's team
const participantFrame = participantFrames[participantIndex - 1]
const participantGold = participantFrame.totalGold
if (!participantFrame) return 'even'
const participant = match.info.participants.find(
x => x.participantId == participantFrame.participantId
)!
const opponent = match.info.participants.find(
x => x.teamPosition === participant.teamPosition && x.teamId != participant.teamId
)
if (opponent == undefined) return 'even'
const opponentGold = participantFrames.find(
x => x.participantId == opponent.participantId
)!.totalGold
const goldDiff = participantGold - opponentGold
if (goldDiff >= GOLD_THRESHOLD) return 'ahead'
if (goldDiff <= -GOLD_THRESHOLD) return 'behind'
return 'even'
}
function handleMatchBuilds(
// eslint-disable-next-line @typescript-eslint/no-explicit-any
timeline: any,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
participant: any,
match: Match,
participant: Participant,
participantIndex: number,
builds: Builds
) {
const timeline: Timeline = match.timeline
// Find or create the build for this participant's rune configuration
const build = findOrCreateBuild(builds, participant)
build.count += 1
const items: Array<number> = []
const items: Array<{ itemId: number; goldAdvantage: GoldAdvantageTag }> = []
for (const frame of timeline.info.frames) {
for (const event of frame.events) {
if (event.participantId != participantIndex) continue
if (event.type == 'ITEM_UNDO') {
if (items.length > 0 && items[items.length - 1] == event.beforeId) {
if (items.length > 0 && items[items.length - 1].itemId == event.beforeId) {
items.pop()
}
continue
@@ -251,7 +299,9 @@ function handleMatchBuilds(
if (itemInfo.to.length != 0 && (items.length >= 1 || participant.teamPosition === 'UTILITY'))
continue
items.push(event.itemId)
// Calculate gold advantage at time of purchase
const goldAdvantage = calculateGoldAdvantage(match, frame, participantIndex)
items.push({ itemId: event.itemId, goldAdvantage })
}
}
@@ -262,13 +312,12 @@ function handleMatchBuilds(
}
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function handleMatch(match: any, champions: Map<number, ChampionData>) {
function handleMatch(match: Match, champions: Map<number, ChampionData>) {
let participantIndex = 0
for (const participant of match.info.participants) {
participantIndex += 1
const championId = participant.championId
const champion = champions.get(championId)
const champion = champions.get(championId)!
// Lanes
let lane = champion.lanes.find(x => x.data == participant.teamPosition)
@@ -333,7 +382,7 @@ function handleMatch(match: any, champions: Map<number, ChampionData>) {
matchup.winrate = (matchup.winrate * (matchup.games - 1)) / matchup.games
}
} else {
const opponentChampion = champions.get(opponentChampionId)
const opponentChampion = champions.get(opponentChampionId)!
lane.matchups.push({
championId: opponentChampionId,
@@ -346,7 +395,7 @@ function handleMatch(match: any, champions: Map<number, ChampionData>) {
}
// Items and runes (builds)
handleMatchBuilds(match.timeline, participant, participantIndex, lane.builds)
handleMatchBuilds(match, participant, participantIndex, lane.builds)
}
}
@@ -366,7 +415,7 @@ async function handleMatchList(
'\rComputing champion stats, game entry ' + currentMatch + '/' + totalMatches + ' ... '
)
currentMatch += 1
handleMatch(match, champions)
handleMatch(match as unknown as Match, champions)
}
return totalMatches
@@ -389,10 +438,10 @@ function splitMergeOnStarterItem(build: Build, championName: string): BuildWithS
) {
const startItems = []
let items = build.items.children[0]
startItems.push({ data: build.items.children[0].data, count: build.items.children[0].count })
startItems.push({ data: build.items.children[0].data!, count: build.items.children[0].count })
build.items.children[0].data = undefined
if (build.items.children.length > 1) {
startItems.push({ data: build.items.children[1].data, count: build.items.children[1].count })
startItems.push({ data: build.items.children[1].data!, count: build.items.children[1].count })
build.items.children[1].data = undefined
items = treeMergeTree(build.items.children[0], build.items.children[1])
}
@@ -420,7 +469,7 @@ function splitMergeOnStarterItem(build: Build, championName: string): BuildWithS
items: c,
bootsFirstCount: build.bootsFirstCount,
count: c.count,
startItems: [{ data: c.data, count: c.count }],
startItems: [{ data: c.data!, count: c.count }],
suppItems: build.suppItems,
boots: build.boots
})
@@ -567,7 +616,7 @@ async function finalizeChampionStats(champion: ChampionData, totalMatches: numbe
// Summoner spells
lane.summonerSpells.forEach(x => (x.pickrate = x.count / lane.count))
lane.summonerSpells.sort((a, b) => b.count - a.count)
lane.summonerSpells = lane.summonerSpells.filter(x => x.pickrate >= 0.05)
lane.summonerSpells = lane.summonerSpells.filter(x => x.pickrate! >= 0.05)
// Cleaning up builds
cleanupLaneBuilds(lane)
@@ -674,7 +723,7 @@ async function makeChampionsStats(client: MongoClient, patch: string) {
const database = client.db('champions')
const collection = database.collection(patch)
for (const champion of list) {
const championInfo = await finalizeChampionStats(champions.get(champion.id), totalMatches)
const championInfo = await finalizeChampionStats(champions.get(champion.id)!, totalMatches)
await collection.updateOne({ id: champion.id }, { $set: championInfo }, { upsert: true })
}