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46 changes: 46 additions & 0 deletions
46
src/main/java/com/github/mori01231/lifecore/map/SerializedMapCanvas.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package com.github.mori01231.lifecore.map | ||
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| import kotlinx.serialization.Serializable | ||
| import org.bukkit.craftbukkit.v1_15_R1.map.CraftMapCanvas | ||
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| @Serializable | ||
| data class SerializedMapCanvas(val buffer: ByteArray, val base: ByteArray) { | ||
| companion object { | ||
| fun asSerializableMirror(canvas: CraftMapCanvas): SerializedMapCanvas { | ||
| val buffer = CraftMapCanvas::class.java.getDeclaredField("buffer").apply { isAccessible = true }[canvas] as ByteArray | ||
| val base = CraftMapCanvas::class.java.getDeclaredField("base").apply { isAccessible = true }[canvas] as ByteArray | ||
| return SerializedMapCanvas(buffer, base) | ||
| } | ||
| } | ||
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| fun injectToCraftMapCanvas(canvas: CraftMapCanvas) { | ||
| val nmsBuffer = CraftMapCanvas::class.java.getDeclaredField("buffer").apply { isAccessible = true }[canvas] as ByteArray | ||
| val nmsBase = CraftMapCanvas::class.java.getDeclaredField("base").apply { isAccessible = true }[canvas] as ByteArray | ||
| if (buffer.size != nmsBuffer.size) error("buffer size doesn't match") | ||
| if (base.size != nmsBase.size) error("base size doesn't match") | ||
| for ((index, byte) in buffer.withIndex()) { | ||
| nmsBuffer[index] = byte | ||
| } | ||
| for ((index, byte) in base.withIndex()) { | ||
| nmsBase[index] = byte | ||
| } | ||
| } | ||
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| override fun equals(other: Any?): Boolean { | ||
| if (this === other) return true | ||
| if (javaClass != other?.javaClass) return false | ||
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| other as SerializedMapCanvas | ||
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| if (!buffer.contentEquals(other.buffer)) return false | ||
| if (!base.contentEquals(other.base)) return false | ||
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| return true | ||
| } | ||
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| override fun hashCode(): Int { | ||
| var result = buffer.contentHashCode() | ||
| result = 31 * result + base.contentHashCode() | ||
| return result | ||
| } | ||
| } |
27 changes: 27 additions & 0 deletions
27
src/main/java/com/github/mori01231/lifecore/map/SerializedMapDataRenderer.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| package com.github.mori01231.lifecore.map | ||
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| import net.minecraft.server.v1_15_R1.WorldMap | ||
| import org.bukkit.craftbukkit.v1_15_R1.map.CraftMapCanvas | ||
| import org.bukkit.craftbukkit.v1_15_R1.map.CraftMapView | ||
| import org.bukkit.entity.Player | ||
| import org.bukkit.map.MapCanvas | ||
| import org.bukkit.map.MapRenderer | ||
| import org.bukkit.map.MapView | ||
|
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| class SerializedMapDataRenderer(private val canvas: SerializedMapCanvas) : MapRenderer() { | ||
| private var init = false | ||
|
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| override fun render(view: MapView, canvas: MapCanvas, player: Player) { | ||
| this.canvas.injectToCraftMapCanvas(canvas as CraftMapCanvas) | ||
| for (i in 0 until canvas.cursors.size()) { | ||
| canvas.cursors.removeCursor(canvas.cursors.getCursor(i)) | ||
| } | ||
| val worldMap = CraftMapView::class.java.getDeclaredField("worldMap").apply { isAccessible = true }[view] as WorldMap | ||
| for (x in 0..127) { | ||
| for (y in 0..127) { | ||
| worldMap.decorations.clear() | ||
| worldMap.flagDirty(x, y) | ||
| } | ||
| } | ||
| } | ||
| } |
21 changes: 21 additions & 0 deletions
21
src/main/java/com/github/mori01231/lifecore/util/EncodeUtil.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| package com.github.mori01231.lifecore.util | ||
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| import java.io.ByteArrayInputStream | ||
| import java.io.ByteArrayOutputStream | ||
| import java.util.Base64 | ||
| import java.util.zip.GZIPInputStream | ||
| import java.util.zip.GZIPOutputStream | ||
|
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| object EncodeUtil { | ||
| fun encodeBase64AndGzip(data: ByteArray): ByteArray = Base64.getEncoder().encode(gzipByteArray(data)) | ||
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| fun decodeBase64AndGunzip(data: ByteArray): ByteArray = gunzipByteArray(Base64.getDecoder().decode(data)) | ||
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| fun gzipByteArray(data: ByteArray): ByteArray = | ||
| ByteArrayOutputStream().use { | ||
| it.apply { GZIPOutputStream(this).use { gz -> gz.write(data) } }.toByteArray() | ||
| } | ||
|
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| fun gunzipByteArray(data: ByteArray): ByteArray = | ||
| GZIPInputStream(ByteArrayInputStream(data)).use { it.readBytes() } | ||
| } |
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66 changes: 66 additions & 0 deletions
66
src/main/java/com/github/mori01231/lifecore/util/MapUtil.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| package com.github.mori01231.lifecore.util | ||
|
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| import com.github.mori01231.lifecore.map.SerializedMapCanvas | ||
| import com.github.mori01231.lifecore.map.SerializedMapDataRenderer | ||
| import kotlinx.serialization.encodeToString | ||
| import kotlinx.serialization.json.Json | ||
| import kotlinx.serialization.json.JsonElement | ||
| import kotlinx.serialization.json.decodeFromJsonElement | ||
| import kotlinx.serialization.json.encodeToJsonElement | ||
| import org.bukkit.Material | ||
| import org.bukkit.craftbukkit.v1_15_R1.entity.CraftPlayer | ||
| import org.bukkit.craftbukkit.v1_15_R1.map.CraftMapCanvas | ||
| import org.bukkit.craftbukkit.v1_15_R1.map.CraftMapRenderer | ||
| import org.bukkit.craftbukkit.v1_15_R1.map.CraftMapView | ||
| import org.bukkit.entity.Player | ||
| import org.bukkit.inventory.ItemStack | ||
| import org.bukkit.inventory.meta.MapMeta | ||
| import org.bukkit.map.MapCanvas | ||
| import org.bukkit.map.MapRenderer | ||
| import org.bukkit.map.MapView | ||
|
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| object MapUtil { | ||
| private fun convertCanvasToSerializable(canvas: MapCanvas) = | ||
| when (canvas) { | ||
| is CraftMapCanvas -> SerializedMapCanvas.asSerializableMirror(canvas) | ||
| else -> error("Unsupported type: ${canvas::class.java.name}") | ||
| } | ||
|
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| fun serializeCanvasToJsonElement(canvas: MapCanvas): JsonElement = | ||
| Json.encodeToJsonElement(convertCanvasToSerializable(canvas)) | ||
|
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| fun serializeCanvasToString(canvas: MapCanvas): String = | ||
| Json.encodeToString(convertCanvasToSerializable(canvas)) | ||
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| fun deserializeCanvasFromJsonElement(element: JsonElement): SerializedMapCanvas = | ||
| Json.decodeFromJsonElement(element) | ||
|
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| fun deserializeCanvasFromString(json: String): SerializedMapCanvas = | ||
| Json.decodeFromString(json) | ||
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| @Suppress("UNCHECKED_CAST") | ||
| fun MapView.getCanvases() = | ||
| CraftMapView::class.java.getDeclaredField("canvases").apply { isAccessible = true }[this] as Map<MapRenderer, Map<CraftPlayer, CraftMapCanvas>> | ||
|
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| fun initializeMapRenderer(player: Player, item: ItemStack) { | ||
| if (item.type != Material.FILLED_MAP) return | ||
| val meta = item.itemMeta as? MapMeta? ?: return | ||
| val mapView = meta.mapView ?: return | ||
| if (mapView.renderers.getOrNull(0) !is CraftMapRenderer) { | ||
| if (mapView is CraftMapView) mapView.render(player as CraftPlayer) | ||
| return | ||
| } | ||
| val serializedMapData = | ||
| try { | ||
| item.let { ItemUtil.getByteArrayTag(it, "SerializedMapData") ?: return } | ||
| .let { EncodeUtil.decodeBase64AndGunzip(it) } | ||
| .let { String(it) } | ||
| .let { deserializeCanvasFromString(it) } | ||
| } catch (_: Exception) { | ||
| return | ||
| } | ||
| mapView.removeRenderer(mapView.renderers[0]) | ||
| mapView.addRenderer(SerializedMapDataRenderer(serializedMapData)) | ||
| if (mapView is CraftMapView) mapView.render(player as CraftPlayer) | ||
| } | ||
| } |