worldinfo writer

src/net/torvald/random/HQRNG.kt

@@ -10,8 +10,8 @@ import java.util.Random
  */
 class HQRNG @JvmOverloads constructor(seed: Long = System.nanoTime()) : Random() {
 
-    private var s0: Long
-    private var s1: Long
+    var s0: Long; private set
+    var s1: Long; private set
 
     constructor(s0: Long, s1: Long) : this() {
         this.s0 = s0

src/net/torvald/terrarum/ModMgr.kt

@@ -61,6 +61,7 @@ object ModMgr {
     }
     const val modDir = "./assets/mods"
 
+    /** Module name (directory name), ModuleMetadata */
     val moduleInfo = HashMap<String, ModuleMetadata>()
 
     init {
@@ -156,6 +157,7 @@ object ModMgr {
         checkExistence(module)
         return "$modDir/$module/${path.sanitisePath()}"
     }
+    /** Returning files are read-only */
     fun getGdxFile(module: String, path: String): FileHandle {
         return Gdx.files.internal(getPath(module, path))
     }
@@ -174,6 +176,40 @@ object ModMgr {
         }
     }
 
+    /** Get a common file from all the installed mods. Files are guaranteed to exist. If a mod does not
+     * contain the file, the mod will be skipped. */
+    fun getFilesFromEveryMod(path: String): List<File> {
+        val path = path.sanitisePath()
+        val moduleNames = moduleInfo.keys.toList()
+
+        val filesList = ArrayList<File>()
+        moduleNames.forEach {
+            val file = File(getPath(it, path))
+
+            if (file.exists()) filesList.add(file)
+        }
+
+        return filesList.toList()
+    }
+
+    /** Get a common file from all the installed mods. Files are guaranteed to exist. If a mod does not
+     * contain the file, the mod will be skipped.
+     *
+     * Returning files are read-only. */
+    fun getGdxFilesFromEveryMod(path: String): List<FileHandle> {
+        val path = path.sanitisePath()
+        val moduleNames = moduleInfo.keys.toList()
+
+        val filesList = ArrayList<FileHandle>()
+        moduleNames.forEach {
+            val file = Gdx.files.internal(getPath(it, path))
+
+            if (file.exists()) filesList.add(file)
+        }
+
+        return filesList.toList()
+    }
+
 
 
     object GameBlockLoader {

src/net/torvald/terrarum/blockproperties/BlockCodex.kt

@@ -24,6 +24,9 @@ object BlockCodex {
         blockProps = Array<BlockProp>(TILE_UNIQUE_MAX * 2, { BlockProp() })
     }
 
+    /**
+     * Later entry (possible from other modules) will replace older ones
+     */
     operator fun invoke(module: String, path: String) {
         try {
             val records = CSVFetcher.readFromModule(module, path)

src/net/torvald/terrarum/gameworld/GameWorld.kt

@@ -12,10 +12,17 @@ typealias BlockDamage = Float
 
 open class GameWorld {
 
+    var worldName: String = "New World"
     var worldIndex: Int
     val width: Int
     val height: Int
 
+    val creationTime: Long
+    var lastPlayTime: Long
+        internal set // there's a case of save-and-continue-playing
+
+    /** Used to calculate play time */
+    val loadTime: Long = System.currentTimeMillis() / 1000L
 
     //layers
     val layerWall: MapLayer
@@ -49,7 +56,7 @@ open class GameWorld {
         internal set
 
 
-    constructor(worldIndex: Int, width: Int, height: Int) {
+    constructor(worldIndex: Int, width: Int, height: Int, creationTIME_T: Long, lastPlayTIME_T: Long = creationTIME_T) {
         this.worldIndex = worldIndex
         this.width = width
         this.height = height
@@ -71,9 +78,13 @@ open class GameWorld {
 
         // air pressure layer: 4 * 8 is one cell
         //layerAirPressure = MapLayerHalfFloat(width / 4, height / 8, 13f) // 1013 mBar
+
+
+        creationTime = creationTIME_T
+        lastPlayTime = lastPlayTIME_T
     }
 
-    internal constructor(worldIndex: Int, layerData: ReadLayerDataLzma.LayerData) {
+    internal constructor(worldIndex: Int, layerData: ReadLayerDataLzma.LayerData, creationTIME_T: Long, lastPlayTIME_T: Long = creationTIME_T) {
         this.worldIndex = worldIndex
 
         layerTerrain = layerData.layerTerrain
@@ -90,6 +101,10 @@ open class GameWorld {
 
         width = layerTerrain.width
         height = layerTerrain.height
+
+
+        creationTime = creationTIME_T
+        lastPlayTime = lastPlayTIME_T
     }
 
 

src/net/torvald/terrarum/serialise/WriteWorldInfo.kt

@@ -0,0 +1,126 @@
+package net.torvald.terrarum.serialise
+
+import com.badlogic.gdx.Gdx
+import net.torvald.terrarum.ModMgr
+import net.torvald.terrarum.Terrarum
+import net.torvald.terrarum.modulebasegame.gameactors.PlayerBuilder
+import net.torvald.terrarum.modulebasegame.gameworld.GameWorldExtension
+import net.torvald.terrarum.modulebasegame.weather.WeatherMixer
+import net.torvald.terrarum.modulebasegame.worldgenerator.RoguelikeRandomiser
+import org.apache.commons.codec.digest.DigestUtils
+import java.io.BufferedOutputStream
+import java.io.File
+import java.io.FileInputStream
+import java.io.FileOutputStream
+
+object WriteWorldInfo {
+
+    // FIXME UNTESTED
+
+    val META_MAGIC = "TESV".toByteArray(Charsets.UTF_8)
+    val NULL = 0.toByte()
+
+    /**
+     * TODO currently it'll dump the temporary file (tmp_worldinfo1) onto the disk and will return the temp file.
+     *
+     * @return File on success; `null` on failure
+     */
+    internal operator fun invoke(): List<File>? {
+        val world = (Terrarum.ingame!!.world)
+
+        val path = "${Terrarum.defaultSaveDir}/tmp_worldinfo"
+
+        val infileList = arrayOf(
+                ModMgr.getGdxFilesFromEveryMod("blocks/blocks.csv"),
+                ModMgr.getGdxFilesFromEveryMod("items/items.csv"),
+                ModMgr.getGdxFilesFromEveryMod("materials/materials.csv")
+        )
+
+        val metaFile = File(path + "0")
+
+        val outFiles = ArrayList<File>()
+        outFiles.add(metaFile)
+        val worldInfoHash = ArrayList<ByteArray>() // hash of worldinfo1-3
+        // try to write worldinfo1-3
+
+        for (filenum in 1..3) {
+            val outFile = File(path + filenum.toString())
+            if (outFile.exists()) outFile.delete()
+            outFile.createNewFile()
+
+            val outputStream = BufferedOutputStream(FileOutputStream(outFile), 256)
+            val infile = infileList[filenum - 1]
+
+            infile.forEach {
+                val readBytes = it.readBytes()
+                outputStream.write(readBytes)
+            }
+
+            outputStream.flush()
+            outputStream.close()
+
+
+            outFiles.add(outFile)
+
+
+            worldInfoHash.add(DigestUtils.sha256(FileInputStream(outFile)))
+        }
+
+
+        // compose save meta
+        val metaOut = BufferedOutputStream(FileOutputStream(metaFile), 256)
+
+
+        metaOut.write(META_MAGIC)
+
+        // world name
+        val worldNameBytes = world.worldName.toByteArray(Charsets.UTF_8)
+        metaOut.write(worldNameBytes)
+        if (worldNameBytes.last() != NULL) metaOut.write(NULL.toInt())
+
+        // terrain seed
+        metaOut.write(world.generatorSeed.toLittle())
+
+        // randomiser seed
+        metaOut.write(RoguelikeRandomiser.RNG.s0.toLittle())
+        metaOut.write(RoguelikeRandomiser.RNG.s1.toLittle())
+
+        // weather seed
+        metaOut.write(WeatherMixer.RNG.s0.toLittle())
+        metaOut.write(WeatherMixer.RNG.s1.toLittle())
+
+        // SHA256SUM of worldinfo1-3
+        worldInfoHash.forEach {
+            metaOut.write(it)
+        }
+
+        // reference ID of the player
+        metaOut.write(Terrarum.PLAYER_REF_ID.toLittle())
+
+        // time_t
+        metaOut.write((world as GameWorldExtension).time.TIME_T.toLittle())
+
+        // creation time (real world time)
+        metaOut.write(world.creationTime.toLittle48())
+
+        // time at save
+        val timeNow = System.currentTimeMillis() / 1000L
+        metaOut.write(timeNow.toLittle48())
+
+        // get playtime and save it
+        val timeToAdd = timeNow - world.loadTime
+        metaOut.write(world.lastPlayTime.plus(timeToAdd).toInt().toLittle())
+        world.lastPlayTime = timeNow
+
+
+
+
+        metaOut.flush()
+        metaOut.close()
+
+
+
+        return outFiles.toList()
+    }
+
+}

work_files/DataFormats/Savegame metadata.txt

@@ -9,7 +9,7 @@ Ord  Hex  Description
 02   4D   S
 03   44   V
 
-04        Name of the world in UTF-8 (arbitrary length)
+04        Name of the world in UTF-8 (arbitrary length, must not contain NULL)
 ...  00   String terminator
 
 ...       Terrain seed (8 bytes)
@@ -21,7 +21,6 @@ Ord  Hex  Description
 ...       SHA-256 hash of worldinfo1 (32 bytes)
 ...       SHA-256 hash of worldinfo2 (32 bytes)
 ...       SHA-256 hash of worldinfo3 (32 bytes)
-...       SHA-256 hash of worldinfo4 (32 bytes)
 
 ...       ReferenceID of the player (4 bytes, a fixed value of 91A7E2)
 ...       Current world's time_t (the ingame time, 8 bytes)