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https://github.com/2revoemag/PSF-BotServer.git
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changing coordinate and scaling systems for spots and fixing tests
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FateJH
parent
29b4eaa4e4
commit
a3ef754da3
3 changed files with 112 additions and 87 deletions
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@ -207,32 +207,80 @@ object PacketHelpers {
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def encodedStringWithLimit(limit : Int) : Codec[String] = variableSizeBytes(encodedStringSizeWithLimit(limit), ascii)
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*/
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/**
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* Codec that encodes/decodes a list of `n` elements, where `n` is known at compile time.<br>
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* <br>
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* This function is copied almost verbatim from its source, with exception of swapping the parameter that is normally a `Nat` `literal`.
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* The modified function takes a normal unsigned `Integer` and assures that the parameter is non-negative before further processing.
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* It casts to a `Long` and passes onto an overloaded method.
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* @param size the known size of the `List`
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* @param codec a codec that describes each of the contents of the `List`
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* @tparam A the type of the `List` contents
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* @see codec\package.scala, sizedList
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* @see codec\package.scala, listOfN
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* @return a codec that works on a List of A but excludes the size from the encoding
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*/
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def listOfNSized[A](size : Int, codec : Codec[A]) : Codec[List[A]] = listOfNSized(if(size < 0) 0L else size.asInstanceOf[Long], codec)
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/**
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* Codec that encodes/decodes a list of `n` elements, where `n` is known at compile time.<br>
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* <br>
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* This function is copied almost verbatim from its source, with exception of swapping the parameter that is normally a `Nat` `literal`.
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* The modified function takes a normal unsigned `Long` and assures that the parameter is non-negative before further processing.
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* @param size the known size of the `List`
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* @param codec a codec that describes each of the contents of the `List`
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* @tparam A the type of the `List` contents
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* @see codec\package.scala, sizedList
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* @see codec\package.scala, listOfN
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* @see codec\package.scala, provide
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* @return a codec that works on a List of A but excludes the size from the encoding
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*/
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def listOfNSized[A](size : Long, codec : Codec[A]) : Codec[List[A]] = listOfNAligned(provide(if(size < 0) 0 else size), 0, codec)
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/**
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* Encode and decode a byte-aligned `List`.<br>
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* <br>
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* This function is copied almost verbatim from its source, with exception of swapping the normal `ListCodec` for a new `AlignedListCodec`.
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* This function is copied almost verbatim from its source, but swapping the normal `ListCodec` for a new `AlignedListCodec`.
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* It also changes the type of the list length `Codec` from `Int` to `Long`.
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* Due to type erasure, this method can not be overloaded for both `Codec[Int]` and `Codec[Long]`.
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* The compiler would resolve both internally into type `Codec[T]` and their function definitions would be identical.
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* For the purposes of use, `longL(n)` will cast to an `Int` for the same acceptable values of `n` as in `uintL(n)`.
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* @param countCodec the codec that represents the prefixed size of the `List`
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* @param alignment the number of bits padded between the `List` size and the `List` contents
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* @param alignment the number of bits padded between the `List` size and the `List` contents
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* @param valueCodec a codec that describes each of the contents of the `List`
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* @tparam A the type of the `List` contents
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* @see codec\package.scala, listOfN
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* @return a codec that works on a List of A
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*/
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def listOfNAligned[A](countCodec: Codec[Int], alignment : Int, valueCodec: Codec[A]): Codec[List[A]] = {
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def listOfNAligned[A](countCodec : Codec[Long], alignment : Int, valueCodec : Codec[A]) : Codec[List[A]] = {
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countCodec.
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flatZip { count => new AlignedListCodec(countCodec, valueCodec, alignment, Some(count)) }.
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narrow[List[A]]({ case (cnt, xs) =>
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if (xs.size == cnt) Attempt.successful(xs)
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else Attempt.failure(Err(s"Insufficient number of elements: decoded ${xs.size} but should have decoded $cnt"))
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}, xs => (xs.size, xs)).
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flatZip {
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count =>
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new AlignedListCodec(countCodec, valueCodec, alignment, Some(count))
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}.
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narrow[List[A]] (
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{
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case (cnt, xs) =>
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if(xs.size == cnt)
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Attempt.successful(xs)
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else
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Attempt.failure(Err(s"Insufficient number of elements: decoded ${xs.size} but should have decoded $cnt"))
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},
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{
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xs =>
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(xs.size, xs)
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}
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).
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withToString(s"listOfN($countCodec, $valueCodec)")
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}
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}
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/**
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* The codec that encodes and decodes a byte-aligned `List`.<br>
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* The greater `Codec` class that encodes and decodes a byte-aligned `List`.<br>
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* <br>
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* This class is copied almost verbatim from its source, with only heavy modifications to its `encode` process.
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* This class is copied almost verbatim from its source, with two major modifications.
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* First, heavy modifications to its `encode` process account for the alignment value.
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* Second, the length field is parsed as a `Codec[Long]` value and type conversion is accounted for at several points.
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* @param countCodec the codec that represents the prefixed size of the `List`
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* @param valueCodec a codec that describes each of the contents of the `List`
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* @param alignment the number of bits padded between the `List` size and the `List` contents (on successful)
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@ -240,24 +288,24 @@ object PacketHelpers {
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* @tparam A the type of the `List` contents
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* @see ListCodec.scala
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*/
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private class AlignedListCodec[A](countCodec : Codec[Int], valueCodec: Codec[A], alignment : Int, limit: Option[Int] = None) extends Codec[List[A]] {
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private class AlignedListCodec[A](countCodec : Codec[Long], valueCodec: Codec[A], alignment : Int, limit: Option[Long] = None) extends Codec[List[A]] {
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/**
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* Convert a `List` of elements into a byte-aligned `BitVector`.<br>
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* <br>
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* Bit padding after the encoded size of the `List` is only added if the `alignment` value is greater than zero and the initial encoding process was successful.
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* The padding is rather heavy-handed and a completely different `BitVector` is returned if successful.
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* Performance hits for this complexity are not expected to be significant.
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* @param list the `List` to be encoded
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* @return the `BitVector` encoding, if successful
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*/
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override def encode(list : List[A]) : Attempt[BitVector] = {
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val solve : Attempt[BitVector] = Encoder.encodeSeq(valueCodec)(list)
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var solve : Attempt[BitVector] = Encoder.encodeSeq(valueCodec)(list)
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if(alignment > 0) {
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solve match {
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case Attempt.Successful(vector) =>
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val countCodecSize : Long = countCodec.sizeBound.lowerBound
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return Successful(vector.take(countCodecSize) ++ BitVector.fill(alignment)(false) ++ vector.drop(countCodecSize))
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solve = Attempt.successful(vector.take(countCodecSize) ++ BitVector.fill(alignment)(false) ++ vector.drop(countCodecSize))
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case _ =>
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solve = Attempt.failure(Err("failed to create a list"))
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}
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}
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solve
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@ -268,22 +316,24 @@ private class AlignedListCodec[A](countCodec : Codec[Int], valueCodec: Codec[A],
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* @param buffer the encoded bits in the `List`, preceded by the alignment bits
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* @return the decoded `List`
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*/
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def decode(buffer: BitVector) = Decoder.decodeCollect[List, A](valueCodec, limit)(buffer.drop(alignment))
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/**
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* The size of the encoded `List`.<br>
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* <br>
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* Unchanged from original.
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* @return the size as calculated by the size of each element for each element
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*/
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def sizeBound = limit match {
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case None => SizeBound.unknown
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case Some(lim) => valueCodec.sizeBound * lim.toLong
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override def decode(buffer: BitVector) = {
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val lim = Option( if(limit.isDefined) limit.get.asInstanceOf[Int] else 0 ) //TODO potentially unsafe size conversion
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Decoder.decodeCollect[List, A](valueCodec, lim)(buffer.drop(alignment))
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}
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/**
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* Get a `String` representation of this `List`.<br>
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* <br>
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* The size of the encoded `List`.
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* @return the size as calculated by the size of each element for each element
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*/
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override def sizeBound = limit match {
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case None =>
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SizeBound.unknown
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case Some(lim : Long) =>
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valueCodec.sizeBound * lim
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}
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/**
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* Get a `String` representation of this `List`.
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* Unchanged from original.
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* @return the `String` representation
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*/
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@ -1,6 +1,7 @@
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// Copyright (c) 2016 PSForever.net to present
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package net.psforever.packet.game
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import net.psforever.newcodecs.newcodecs
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import net.psforever.packet.{GamePacketOpcode, Marshallable, PacketHelpers, PlanetSideGamePacket}
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import scodec.Codec
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import scodec.codecs._
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@ -9,23 +10,15 @@ import scodec.codecs._
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* Information for positioning a hotspot on the continental map.<br>
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* <br>
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* The origin point is the lowest left corner of the map grid.
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* The coordinates of the hotspot do not match up to the map's internal coordinate system - what you learn using the `/loc` command.
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* Hotspot coordinates range across from 0 (`000`) to 4096 (`FFF`) on both axes.
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* The scale is typically set as 128 (`80000`) but can also be made smaller or even made absurdly big.<br>
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* <br>
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* Exploration:<br>
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* Are those really unknown values or are they just extraneous spacers between the components of the coordinates?
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* @param unk1 na; always zero?
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* The coordinates of the hotspot do necessarily match up to the map's internal coordinate system - what you learn using the `/loc` command.
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* Instead, all maps use a 0 - 8192 coordinate overlay.
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* @param x the x-coord of the center of the hotspot
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* @param unk2 na; always zero?
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* @param y the y-coord of the center of the hotspot
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* @param scale how big the hotspot explosion icon appears
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*/
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final case class HotSpotInfo(unk1 : Int,
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x : Int,
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unk2 : Int,
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y : Int,
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scale : Int)
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final case class HotSpotInfo(x : Float,
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y : Float,
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scale : Float)
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/**
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* A list of data for creating hotspots on a continental map.
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@ -38,16 +31,13 @@ final case class HotSpotInfo(unk1 : Int,
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* To clear away only some hotspots, but retains others, a continental `List` would have to be pruned selectively for the client.<br>
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* <br>
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* Exploration:<br>
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* The unknown parameter has been observed with various non-zero values such as 1, 2, and 5.
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* Visually, however, `unk` does not affect anything.
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* (Originally, I thought it might be a layering index but that is incorrect.)
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* Does it do something internally?
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* What does (zone) priority entail?
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* @param continent_guid the zone (continent)
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* @param unk na
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* @param priority na
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* @param spots a List of HotSpotInfo
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*/
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final case class HotSpotUpdateMessage(continent_guid : PlanetSideGUID,
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unk : Int,
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priority : Int,
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spots : List[HotSpotInfo] = Nil)
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extends PlanetSideGamePacket {
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type Packet = HotSpotUpdateMessage
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@ -56,30 +46,22 @@ final case class HotSpotUpdateMessage(continent_guid : PlanetSideGUID,
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}
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object HotSpotInfo extends Marshallable[HotSpotInfo] {
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/*
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the scale is technically not "correct"
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the client is looking for a normal 0-8192 value
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we are trying to enforce a more modest graphic scale at 128.0f
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*/
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implicit val codec : Codec[HotSpotInfo] = {
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("unk1" | uint8L) ::
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("x" | uintL(12)) ::
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("unk2" | uint8L) ::
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("y" | uintL(12)) ::
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("scale" | uintL(20))
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("x" | newcodecs.q_float(0.0, 8192.0, 20)) ::
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("y" | newcodecs.q_float(0.0, 8192.0, 20)) ::
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("scale" | newcodecs.q_float(0.0, 524288.0, 20))
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}.as[HotSpotInfo]
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/**
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* This alternate constructor ignores the unknown values.
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* @param x the x-coord of the center of the hotspot
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* @param y the y-coord of the center of the hotspot
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* @param scale how big the hotspot explosion icon appears
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* @return valid HotSpotInfo
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*/
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def apply(x : Int, y : Int, scale : Int) : HotSpotInfo = {
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HotSpotInfo(0, x, 0 ,y, scale)
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}
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}
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object HotSpotUpdateMessage extends Marshallable[HotSpotUpdateMessage] {
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implicit val codec : Codec[HotSpotUpdateMessage] = (
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("continent_guid" | PlanetSideGUID.codec) ::
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("unk" | uint4L) ::
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("spots" | PacketHelpers.listOfNAligned(uint8L, 4, HotSpotInfo.codec))
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("priority" | uint4L) ::
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("spots" | PacketHelpers.listOfNAligned(longL(8), 4, HotSpotInfo.codec))
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).as[HotSpotUpdateMessage]
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}
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