Open-source multiplayer game server compatible with the RuneScape client
https://www.openrs2.org/
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69 lines
2.1 KiB
69 lines
2.1 KiB
package org.openrs2.cache
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import org.openrs2.buffer.use
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public class VersionList(
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public val files: List<List<File>>,
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public val maps: Map<Int, MapSquare>,
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) {
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public data class File(
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val version: Int,
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val checksum: Int
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)
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public data class MapSquare(
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val mapFile: Int,
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val locFile: Int,
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val freeToPlay: Boolean
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)
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public companion object {
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private val NAMES = listOf("model", "anim", "midi", "map")
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@JvmStatic
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public fun read(archive: JagArchive): VersionList {
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val files = mutableListOf<List<File>>()
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for (name in NAMES) {
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val versions = archive.read("${name}_version".uppercase()).use { buf ->
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IntArray(buf.readableBytes() / 2) {
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buf.readUnsignedShort()
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}
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}
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val checksums = archive.read("${name}_crc".uppercase()).use { buf ->
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IntArray(buf.readableBytes() / 4) {
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buf.readInt()
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}
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}
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require(versions.size == checksums.size)
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files += versions.zip(checksums, ::File)
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}
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val maps = mutableMapOf<Int, MapSquare>()
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archive.read("map_index".uppercase()).use { buf ->
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while (buf.readableBytes() >= 7) {
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val mapSquare = buf.readUnsignedShort()
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val mapFile = buf.readUnsignedShort()
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val locFile = buf.readUnsignedShort()
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val freeToPlay = buf.readBoolean()
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if (maps.containsKey(mapSquare)) {
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/*
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* If there's a map square collision, pick the first
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* entry for compatibility with the client.
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*/
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continue
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}
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maps[mapSquare] = MapSquare(mapFile, locFile, freeToPlay)
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}
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}
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return VersionList(files, maps)
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}
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}
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}
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