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save juggling for autosaves

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minjaesong
2023-06-26 23:10:52 +09:00
parent 73a8198378
commit 2b50562002
6 changed files with 40 additions and 14 deletions
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32
src/net/torvald/terrarum/IngameInstance.kt
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@@ -410,14 +410,14 @@ open class IngameInstance(val batch: FlippingSpriteBatch, val isMultiplayer: Boo
/**
* Copies most recent `save` to `save.1`, leaving `save` for overwriting, previous `save.1` will be copied to `save.2`
*/
fun makeSavegameBackupCopy(file: File, isAuto: Boolean) {
fun makeSavegameBackupCopy(file: File) {
if (!file.exists()) {
return
}
val file1 = File("${file.absolutePath}.${if (isAuto) "a" else "1"}")
val file2 = File("${file.absolutePath}.${if (isAuto) "b" else "1"}")
val file3 = File("${file.absolutePath}.${if (isAuto) "c" else "1"}")
val file1 = File("${file.absolutePath}.1")
val file2 = File("${file.absolutePath}.2")
val file3 = File("${file.absolutePath}.3")
try {
// do not overwrite clean .2 with dirty .1
@@ -442,6 +442,30 @@ open class IngameInstance(val batch: FlippingSpriteBatch, val isMultiplayer: Boo
}
fun makeSavegameBackupCopyAuto(file0: File): File {
val file1 = File("${file0.absolutePath}.a")
val file2 = File("${file0.absolutePath}.b")
val file3 = File("${file0.absolutePath}.c")
try {
// do not overwrite clean .2 with dirty .1
val flags3 = FileInputStream(file3).let { it.skip(49L); val r = it.read(); it.close(); r }
val flags2 = FileInputStream(file2).let { it.skip(49L); val r = it.read(); it.close(); r }
if (!(flags3 == 0 && flags2 != 0) || !file3.exists()) file1.copyTo(file3, true)
} catch (e: NoSuchFileException) {} catch (e: FileNotFoundException) {}
try {
if (file2.exists() && !file3.exists())
file2.copyTo(file3, true)
if (file1.exists() && !file2.exists())
file1.copyTo(file2, true)
file0.copyTo(file1, true)
} catch (e: IOException) {}
return file1
}
// simple euclidean norm, squared
private val actorDistanceCalculator = DistanceCalculator<ActorWithBody> { t: ActorWithBody, p: PointND ->