Add witchaven lever puzzle (was supposed to be included in family crest).

Server/src/main/kotlin/rs09/game/content/quest/members/familycrest/WitchavenLeverInteraction.kt

@@ -0,0 +1,103 @@
+package core.game.content.quest.members.familycrest
+
+import core.game.node.entity.impl.ForceMovement
+import core.game.node.entity.player.Player
+import core.game.node.scenery.Scenery
+import core.game.world.map.Direction
+import core.game.world.map.Location
+import core.game.world.map.RegionManager
+import core.game.world.update.flag.context.Animation
+import core.net.packet.PacketRepository
+import core.net.packet.context.BuildSceneryContext
+import core.net.packet.out.ClearScenery
+import core.net.packet.out.ConstructScenery
+import core.net.packet.out.UpdateAreaPosition;
+import rs09.game.interaction.InteractionListener
+
+fun doDoor(player: Player, scenery: Scenery) {
+    val d = if(scenery.rotation == 0 || scenery.rotation == 3) { -1 } else { 0 }
+    var direction = Direction.NORTH
+    if(scenery.rotation % 2 == 0) {
+        direction = if(player.location.x <= scenery.location.x + d) { Direction.EAST } else { Direction.WEST }
+    } else {
+        direction = if(player.location.y <= scenery.location.y + d) { Direction.NORTH } else { Direction.SOUTH }
+    }
+    ForceMovement.run(player,
+        player.location,
+        player.location.transform(direction.stepX, direction.stepY, 0),
+        ForceMovement.WALK_ANIMATION,
+        ForceMovement.WALK_ANIMATION,
+        direction,
+        8);
+
+}
+
+class WitchavenLeverInteraction : InteractionListener() {
+	val DOWN_ANIMATION = Animation(2140)
+	val UP_ANIMATION = Animation(2139)
+
+    // TODO: It seems like the even numbers are used for the "up" positions, but there's no parent object with varps for them.
+    // Currently, we just send a `ConstructScenery` packet to the specific player. Is there a cleaner way to do this?
+    val NORTH_LEVER_A = 2421
+    val NORTH_LEVER_B = 2425
+    val SOUTH_LEVER = 2423
+    val LEVERS = intArrayOf(NORTH_LEVER_A, NORTH_LEVER_A+1, NORTH_LEVER_B, NORTH_LEVER_B+1, SOUTH_LEVER, SOUTH_LEVER+1)
+
+    val NORTH_DOOR = 2431 // 92 in RSC
+    val HELLHOUND_DOOR = 2430 // 91 in RSC
+    val SOUTHWEST_DOOR = 2427 // 90 in RSC
+    val SOUTHEAST_DOOR = 2429 // 88 in RSC
+    val DOORS = intArrayOf(NORTH_DOOR, HELLHOUND_DOOR, SOUTHWEST_DOOR, SOUTHEAST_DOOR)
+
+    override fun defineListeners() {
+        on(LEVERS, SCENERY, "pull") { player, node ->
+            val baseId = if(node.id % 2 == 0) { node.id - 1 } else { node.id }
+            if(player.questRepository.getQuest("Family Crest").getStage(player) == 0) {
+                player.sendMessage("Nothing interesting happens.")
+            }
+            val old = player.getAttribute("family-crest:witchaven-lever:${baseId}", false)
+            player.setAttribute("family-crest:witchaven-lever:${baseId}", !old)
+            val direction = if(old) { "down" } else { "up" }
+            player.sendMessage("You pull the lever ${direction}.")
+            player.sendMessage("You hear a clunk.")
+            player.animate(if(old) { DOWN_ANIMATION } else { UP_ANIMATION })
+            val downLever = (node as Scenery).transform(baseId)
+            val upLever = (node as Scenery).transform(baseId + 1)
+            player.debug("lever: ${downLever.id} ${upLever.id}")
+            val buffer = UpdateAreaPosition.getChunkUpdateBuffer(player, RegionManager.getRegionChunk(player.location).currentBase)
+            if(old) {
+                // TODO: This doesn't seem to properly make the lever return to the "down" position visually.
+                ClearScenery.write(buffer, upLever)
+                ConstructScenery.write(buffer, downLever)
+                //PacketRepository.send(ClearScenery::class.java, BuildSceneryContext(player, downLever))
+            } else {
+                ClearScenery.write(buffer, downLever)
+                ConstructScenery.write(buffer, upLever)
+                //PacketRepository.send(ConstructScenery::class.java, BuildSceneryContext(player, upLever))
+            }
+            player.session.write(buffer)
+            return@on true
+        }
+        on(DOORS, SCENERY, "open") { player, node ->
+            val northA = player.getAttribute("family-crest:witchaven-lever:${NORTH_LEVER_A}", false)
+            val northB = player.getAttribute("family-crest:witchaven-lever:${NORTH_LEVER_B}", false)
+            val south = player.getAttribute("family-crest:witchaven-lever:${SOUTH_LEVER}", false)
+            val questComplete = player.questRepository.getQuest("Family Crest").getStage(player) >= 100
+            // Authentic door formulae from https://gitlab.com/open-runescape-classic/core/-/blob/develop/server/plugins/com/openrsc/server/plugins/authentic/quests/members/FamilyCrest.java#L575-657
+            val canPass = when(node.id) {
+                NORTH_DOOR -> !northA && (south || northB)
+                HELLHOUND_DOOR -> questComplete || (northA && northB && !south)
+                SOUTHWEST_DOOR -> (northA && !south) || (northA && northB && !south)
+                SOUTHEAST_DOOR -> (northA && south) || (northA && northB && south)
+                else -> false
+            } 
+            if(canPass) {
+                player.sendMessage("The door swings open. You go through the door.")
+                doDoor(player, node as Scenery)
+            } else {
+                player.sendMessage("The door is locked.")
+            }
+            return@on true
+        }
+    }
+}