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added snapshot to versioning scheme

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This commit is contained in:
minjaesong
2023-10-04 21:42:15 +09:00
parent 652dfe39eb
commit 3d34363525
11 changed files with 111 additions and 7 deletions
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22
src/net/torvald/terrarum/savegame/DiskSkimmer.kt
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@@ -1,6 +1,7 @@
package net.torvald.terrarum.savegame
import net.torvald.terrarum.App.printdbg
import net.torvald.terrarum.Snapshot
import net.torvald.terrarum.serialise.toUint
import net.torvald.terrarum.serialise.toUlong
import java.io.*
@@ -389,6 +390,16 @@ removefile:
fa.close()
}
fun setSaveSnapshotVersion(snapshot: Snapshot?) {
val fa = RandomAccessFile(diskFile, "rwd")
fa.seek(51L)
if (snapshot == null)
fa.write(byteArrayOf(0, 0))
else
fa.write(snapshot.toBytes())
fa.close()
}
/**
* @return Save type (0b 0000 00ab)
* b: unset - full save; set - quicksave (only applicable to worlds -- quicksave just means the disk is in dirty state)
@@ -418,6 +429,17 @@ removefile:
return fa.read().also { fa.close() }
}
fun getSaveSnapshotVersion(): Snapshot? {
val fa = RandomAccessFile(diskFile, "rwd")
fa.seek(52L)
val b1 = fa.read().toByte()
val b2 = fa.read().toByte().also { fa.close() }
return if (b1 == b2 && b1 == 0.toByte()) null
else Snapshot(byteArrayOf(b1, b2))
}
override fun getDiskName(charset: Charset): String {

30
src/net/torvald/terrarum/savegame/VirtualDisk.kt
View File

@@ -1,6 +1,7 @@
package net.torvald.terrarum.savegame
import net.torvald.terrarum.App.printdbg
import net.torvald.terrarum.Snapshot
import net.torvald.terrarum.savegame.VDSaveKind.PLAYER_DATA
import net.torvald.terrarum.savegame.VDSaveKind.WORLD_DATA
import net.torvald.terrarum.serialise.Common
@@ -79,7 +80,15 @@ Version 254 is a customised version of TEVD tailored to be used as a savegame fo
Int8 Savefile Origin Flags (lower nybble: persistent, upper nybble: can be removed if conditions are met)
0: Created in-game
16: Imported (will be removed once the file is loaded by the player and saved in-game)
Int8[12] Extra info bytes reserved for future usage
Int16 Snapshot Number
0b A_yyyyyyy wwwwww_aa
where:
y: Current Year - 2000 (2023 -> 23)
w: ISO Week Number (1-53)
Aaa: Alphabet (a->000, b->001, ... e->100, f->101, ..., h->111)
e.g. 23w40f is encoded as 1_0010111 101000_01
Int8[10] Extra info bytes reserved for future usage
-- END extraInfoBytes --
UInt8[236] Rest of the long disk name (268 bytes total)
@@ -156,6 +165,25 @@ class VirtualDisk(
var saveOrigin: Int
set(value) { extraInfoBytes[3] = value.toByte() }
get() = extraInfoBytes[3].toUint()
var snapshot: Snapshot?
set(value) {
if (value == null) {
extraInfoBytes[4] = 0
extraInfoBytes[5] = 0
}
else {
value.toBytes().forEachIndexed { index, byte ->
extraInfoBytes[4+index] = byte
}
}
}
get() {
return if (extraInfoBytes[4] == extraInfoBytes[5] && extraInfoBytes[4] == 0.toByte()) null
else {
Snapshot(extraInfoBytes.sliceArray(4..5))
}
}
override fun getDiskName(charset: Charset) = diskName.toCanonicalString(charset)
val root: DiskEntry
get() = entries[0]!!