mirror of
https://github.com/curioustorvald/Terrarum.git
synced 2026-03-07 20:31:51 +09:00
55f7a4ed46
Former-commit-id: b1168a53fd5fbd09c6a5a76506402560fc4e0fd7 Former-commit-id: a0d455da14a6eb7bf0127e136949273ec5a28628
538 lines
16 KiB
Kotlin
538 lines
16 KiB
Kotlin
package net.torvald.terrarum.virtualcomputer.computer
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import org.luaj.vm2.Globals
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import org.luaj.vm2.LuaError
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import org.luaj.vm2.LuaTable
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import org.luaj.vm2.LuaValue
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import org.luaj.vm2.lib.TwoArgFunction
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import org.luaj.vm2.lib.ZeroArgFunction
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import org.luaj.vm2.lib.jse.JsePlatform
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import net.torvald.terrarum.KVHashMap
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import net.torvald.terrarum.gameactors.roundInt
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import net.torvald.terrarum.virtualcomputer.luaapi.*
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import net.torvald.terrarum.virtualcomputer.peripheral.*
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import net.torvald.terrarum.virtualcomputer.terminal.*
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import net.torvald.terrarum.virtualcomputer.worldobject.ComputerPartsCodex
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import org.lwjgl.BufferUtils
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import org.lwjgl.openal.AL
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import org.lwjgl.openal.AL10
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import org.newdawn.slick.GameContainer
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import org.newdawn.slick.Input
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import java.io.*
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import java.nio.ByteBuffer
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import java.util.*
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/**
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* A part that makes "computer fixture" actually work
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*
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* @param avFixtureComputer : actor values for FixtureComputerBase
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*
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* @param term : terminal that is connected to the computer fixtures, null if not connected any.
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* Created by minjaesong on 16-09-10.
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*/
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class TerrarumComputer(peripheralSlots: Int) {
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var maxPeripherals: Int = peripheralSlots
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private set
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val DEBUG_UNLIMITED_MEM = false
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val DEBUG = true
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lateinit var luaJ_globals: Globals
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private set
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var stdout: PrintStream? = null
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private set
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var stderr: PrintStream? = null
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private set
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var stdin: InputStream? = null
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private set
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val processorCycle: Int // number of Lua statement to process per tick (1/100 s)
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get() = ComputerPartsCodex.getProcessorCycles(computerValue.getAsInt("processor") ?: 0)
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val memSize: Int // in bytes; max: 8 GB
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get() {
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if (DEBUG_UNLIMITED_MEM) return 16.shl(20)// 16 MB
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var size = 0
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for (i in 0..3)
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size += ComputerPartsCodex.getRamSize(computerValue.getAsInt("memSlot$i")!!)
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return size
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}
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val UUID = java.util.UUID.randomUUID().toString()
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val computerValue = KVHashMap()
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var isHalted = false
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lateinit var input: Input
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private set
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lateinit var term: Teletype
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private set
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val peripheralTable = ArrayList<Peripheral>()
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var stdinInput: Int = -1
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private set
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// os-related functions. These are called "machine" library-wise.
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private val startupTimestamp: Long = System.currentTimeMillis()
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/** Time elapsed since the power is on. */
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val milliTime: Int
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get() = (System.currentTimeMillis() - startupTimestamp).toInt()
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init {
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computerValue["memslot0"] = 4864 // -1 indicates mem slot is empty
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computerValue["memslot1"] = -1 // put index of item here
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computerValue["memslot2"] = -1 // ditto.
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computerValue["memslot3"] = -1 // do.
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computerValue["processor"] = -1 // do.
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// as in "dev/hda"; refers hard disk drive (and no partitioning)
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computerValue["hda"] = "uuid_testhda" // 'UUID rendered as String' or "none"
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computerValue["hdb"] = "uuid_testhdb"
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computerValue["hdc"] = "none"
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computerValue["hdd"] = "none"
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// as in "dev/fd1"; refers floppy disk drive
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computerValue["fd1"] = "uuid_testfd1"
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computerValue["fd2"] = "none"
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computerValue["fd3"] = "none"
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computerValue["fd4"] = "none"
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// SCSI connected optical drive
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computerValue["sda"] = "none"
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// boot device
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computerValue["boot"] = computerValue.getAsString("hda")!!
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}
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fun getPeripheral(tableName: String): Peripheral? {
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peripheralTable.forEach {
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if (it.tableName == tableName)
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return it
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}
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return null
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}
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fun attachPeripheral(peri: Peripheral) {
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if (peripheralTable.size < maxPeripherals) {
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peripheralTable.add(peri)
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peri.loadLib(luaJ_globals)
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println("[TerrarumComputer] loading peripheral $peri")
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}
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else {
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throw Error("No vacant peripheral slot")
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}
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}
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fun detachPeripheral(peri: Peripheral) {
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if (peripheralTable.contains(peri)) {
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peripheralTable.remove(peri)
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println("[TerrarumComputer] unloading peripheral $peri")
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}
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else {
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throw IllegalArgumentException("Peripheral not exists: $peri")
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}
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}
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fun attachTerminal(term: Teletype) {
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this.term = term
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initSandbox(term)
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}
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fun initSandbox(term: Teletype) {
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luaJ_globals = JsePlatform.debugGlobals()
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stdout = TerminalPrintStream(this)
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stderr = TerminalPrintStream(this)
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stdin = TerminalInputStream(this)
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luaJ_globals.STDOUT = stdout
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luaJ_globals.STDERR = stderr
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luaJ_globals.STDIN = stdin
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luaJ_globals["bit"] = luaJ_globals["bit32"]
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// load libraries
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Term(luaJ_globals, term)
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Security(luaJ_globals)
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Filesystem(luaJ_globals, this)
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HostAccessProvider(luaJ_globals, this)
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Input(luaJ_globals, this)
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PcSpeakerDriver(luaJ_globals, this)
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WorldInformationProvider(luaJ_globals)
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// secure the sandbox
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//luaJ_globals["io"] = LuaValue.NIL
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// dubug should be sandboxed in BOOT.lua (use OpenComputers code)
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//val sethook = luaJ_globals["debug"]["sethook"]
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//luaJ_globals["debug"] = LuaValue.NIL
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// ROM BASIC
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val inputStream = javaClass.getResourceAsStream("/net/torvald/terrarum/virtualcomputer/assets/lua/BOOT.lua")
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runCommand(InputStreamReader(inputStream), "=boot")
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// computer-related global functions
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luaJ_globals["totalMemory"] = LuaFunGetTotalMem(this)
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luaJ_globals["computer"] = LuaTable()
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// rest of the "computer" APIs should be implemented in BOOT.lua
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// load every peripheral if we're in DEBUG
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if (DEBUG) {
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maxPeripherals = 32
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attachPeripheral(PeripheralInternet(this))
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attachPeripheral(PeripheralPSG(this))
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// ...
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}
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}
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fun update(gc: GameContainer, delta: Int) {
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input = gc.input
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if (currentExecutionThread.state == Thread.State.TERMINATED) {
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threadRun = false
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}
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if (!isHalted) {
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driveBeepQueueManager(delta)
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}
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}
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fun keyPressed(key: Int, c: Char) {
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stdinInput = c.toInt()
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// wake thread
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runnableRunCommand.resume()
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synchronized(stdin!!) {
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(stdin as java.lang.Object).notifyAll()
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}
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}
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fun openStdin() {
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stdinInput = -1
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// sleep the thread
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runnableRunCommand.pause()
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}
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lateinit var currentExecutionThread: Thread
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private set
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lateinit var runnableRunCommand: ThreadRunCommand
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private set
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private var threadRun = false
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fun runCommand(line: String, env: String) {
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if (!threadRun) {
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runnableRunCommand = ThreadRunCommand(luaJ_globals, line, env)
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currentExecutionThread = Thread(null, runnableRunCommand, "LuaJ Separated")
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currentExecutionThread.start()
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threadRun = true
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}
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}
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fun runCommand(reader: Reader, filename: String) {
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if (!threadRun) {
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runnableRunCommand = ThreadRunCommand(luaJ_globals, reader, filename)
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currentExecutionThread = Thread(null, runnableRunCommand, "LuaJ Separated")
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currentExecutionThread.start()
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threadRun = true
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}
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}
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class ThreadRunCommand : Runnable {
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private val mode: Int
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private val arg1: Any
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private val arg2: String
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private val lua: Globals
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@Volatile private var running = true
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@Volatile private var paused = false
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private val pauseLock = java.lang.Object()
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constructor(luaInstance: Globals, line: String, env: String) {
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mode = 0
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arg1 = line
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arg2 = env
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lua = luaInstance
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}
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constructor(luaInstance: Globals, reader: Reader, filename: String) {
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mode = 1
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arg1 = reader
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arg2 = filename
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lua = luaInstance
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}
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override fun run() {
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synchronized(pauseLock) {
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if (!running) { // may have changed while waiting to
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// synchronize on pauseLock
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return
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}
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if (paused) {
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try {
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pauseLock.wait() // will cause this Thread to block until
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// another thread calls pauseLock.notifyAll()
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// Note that calling wait() will
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// relinquish the synchronized lock that this
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// thread holds on pauseLock so another thread
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// can acquire the lock to call notifyAll()
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// (link with explanation below this code)
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}
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catch (ex: InterruptedException) {
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return
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}
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if (!running) { // running might have changed since we paused
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return
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}
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}
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}
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try {
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val chunk: LuaValue
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if (mode == 0)
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chunk = lua.load(arg1 as String, arg2)
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else if (mode == 1)
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chunk = lua.load(arg1 as Reader, arg2)
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else
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throw IllegalArgumentException("Unsupported mode: $mode")
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chunk.call()
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}
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catch (e: LuaError) {
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e.printStackTrace(System.err)
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lua.STDERR.println("${SimpleTextTerminal.ASCII_DLE}${e.message}${SimpleTextTerminal.ASCII_DC4}")
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}
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}
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fun stop() {
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running = false
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// you might also want to do this:
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//interrupt()
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}
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fun pause() {
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// you may want to throw an IllegalStateException if !running
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paused = true
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}
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fun resume() {
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synchronized(pauseLock) {
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paused = false
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pauseLock.notifyAll() // Unblocks thread
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}
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}
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}
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class LuaFunGetTotalMem(val computer: TerrarumComputer) : ZeroArgFunction() {
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override fun call(): LuaValue {
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return LuaValue.valueOf(computer.memSize)
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}
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}
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class ComputerEmitTone(val computer: TerrarumComputer) : TwoArgFunction() {
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override fun call(millisec: LuaValue, freq: LuaValue): LuaValue {
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computer.playTone(millisec.checkint(), freq.checkdouble())
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return LuaValue.NONE
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}
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}
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///////////////////
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// BEEPER DRIVER //
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///////////////////
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private val beepMaxLen = 10000
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// let's regard it as a tracker...
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private val beepQueue = ArrayList<Pair<Int, Double>>()
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private var beepCursor = -1
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private var beepQueueLineExecTimer = 0 // millisec
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private var beepQueueFired = false
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private fun driveBeepQueueManager(delta: Int) {
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// start emitTone queue
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if (beepQueue.size > 0 && beepCursor == -1) {
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beepCursor = 0
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}
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// advance emitTone queue
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if (beepCursor >= 0 && beepQueueLineExecTimer >= beepQueueGetLenOfPtn(beepCursor)) {
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beepQueueLineExecTimer -= beepQueueGetLenOfPtn(beepCursor)
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beepCursor += 1
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beepQueueFired = false
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}
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// complete emitTone queue
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if (beepCursor >= beepQueue.size) {
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clearBeepQueue()
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}
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// actually play queue
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if (beepCursor >= 0 && beepQueue.size > 0 && !beepQueueFired) {
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playTone(beepQueue[beepCursor].first, beepQueue[beepCursor].second)
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beepQueueFired = true
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// delete sources that is finished. AL is limited to 256 sources. If you exceed it,
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// we won't get any more sounds played.
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AL10.alSourcei(oldBeepSource, AL10.AL_BUFFER, 0)
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AL10.alDeleteSources(oldBeepSource)
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AL10.alDeleteBuffers(oldBeepBuffer)
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}
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if (beepQueueFired) beepQueueLineExecTimer += delta
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}
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fun clearBeepQueue() {
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beepQueue.clear()
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beepCursor = -1
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beepQueueLineExecTimer = 0
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//AL.destroy()
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if (DEBUG) println("[TerrarumComputer] !! Beep queue clear")
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}
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fun enqueueBeep(duration: Int, freq: Double) {
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beepQueue.add(Pair(Math.min(duration, beepMaxLen), freq))
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}
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fun beepQueueGetLenOfPtn(ptnIndex: Int) = beepQueue[ptnIndex].first
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////////////////////
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// TONE GENERATOR //
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////////////////////
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private val sampleRate = 44100
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private var beepSource: Int = -1
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private var beepBuffer: Int = -1
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private var oldBeepSource: Int = -1
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private var oldBeepBuffer: Int = -1
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var audioData: ByteBuffer? = null
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/**
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* @param duration : milliseconds
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* @param rampUp
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* @param rampDown
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*
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* ,---. (true, true) ,---- (true, false) ----. (false, true) ----- (false, false)
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*/
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private fun makeAudioData(duration: Int, freq: Double,
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rampUp: Boolean = true, rampDown: Boolean = true): ByteBuffer {
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val audioData = BufferUtils.createByteBuffer(duration.times(sampleRate).div(1000))
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val realDuration = duration * sampleRate / 1000
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val chopSize = freq / sampleRate
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val amp = Math.max(4600.0 / freq, 1.0)
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val nHarmonics = if (freq >= 22050.0) 1
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else if (freq >= 11025.0) 2
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else if (freq >= 5512.5) 3
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else if (freq >= 2756.25) 4
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else if (freq >= 1378.125) 5
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else if (freq >= 689.0625) 6
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else 7
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val transitionThre = 974.47218
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// TODO volume ramping?
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if (freq == 0.0) {
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for (x in 0..realDuration - 1) {
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audioData.put(0x00.toByte())
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}
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}
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else if (freq < transitionThre) { // chopper generator (for low freq)
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for (x in 0..realDuration - 1) {
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var sine: Double = amp * Math.cos(Math.PI * 2 * x * chopSize)
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if (sine > 0.79) sine = 0.79
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else if (sine < -0.79) sine = -0.79
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audioData.put(
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(0.5 + 0.5 * sine).times(0xFF).roundInt().toByte()
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)
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}
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}
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else { // harmonics generator (for high freq)
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for (x in 0..realDuration - 1) {
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var sine: Double = 0.0
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for (k in 1..nHarmonics) { // mix only odd harmonics in order to make a squarewave
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sine += Math.sin(Math.PI * 2 * (2*k - 1) * chopSize * x) / (2*k - 1)
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}
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audioData.put(
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(0.5 + 0.5 * sine).times(0xFF).roundInt().toByte()
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)
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}
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}
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audioData.rewind()
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return audioData
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}
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private fun playTone(leninmilli: Int, freq: Double) {
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audioData = makeAudioData(leninmilli, freq)
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if (!AL.isCreated()) AL.create()
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// Clear error stack.
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AL10.alGetError()
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oldBeepBuffer = beepBuffer
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beepBuffer = AL10.alGenBuffers()
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checkALError()
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try {
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AL10.alBufferData(beepBuffer, AL10.AL_FORMAT_MONO8, audioData, sampleRate)
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checkALError()
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oldBeepSource = beepSource
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beepSource = AL10.alGenSources()
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checkALError()
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try {
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AL10.alSourceQueueBuffers(beepSource, beepBuffer)
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checkALError()
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AL10.alSource3f(beepSource, AL10.AL_POSITION, 0f, 0f, 1f)
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AL10.alSourcef(beepSource, AL10.AL_REFERENCE_DISTANCE, 1f)
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AL10.alSourcef(beepSource, AL10.AL_MAX_DISTANCE, 1f)
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AL10.alSourcef(beepSource, AL10.AL_GAIN, 0.3f)
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checkALError()
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AL10.alSourcePlay(beepSource)
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checkALError()
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}
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catch (e: ALException) {
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AL10.alDeleteSources(beepSource)
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}
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}
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catch (e: ALException) {
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AL10.alDeleteSources(beepSource)
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}
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}
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// Custom implementation of Util.checkALError() that uses our custom exception.
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private fun checkALError() {
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val errorCode = AL10.alGetError()
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if (errorCode != AL10.AL_NO_ERROR) {
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throw ALException(errorCode)
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}
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}
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} |