Add essence upgrade recipes

10 files changed, 240 insertions, 19 deletions

diff --git a/src/main/kotlin/moe/nea/firmament/rei/FirmamentReiPlugin.kt b/src/main/kotlin/moe/nea/firmament/rei/FirmamentReiPlugin.kt
index 86ad98b..b955350 100644
--- a/src/main/kotlin/moe/nea/firmament/rei/FirmamentReiPlugin.kt
+++ b/src/main/kotlin/moe/nea/firmament/rei/FirmamentReiPlugin.kt
@@ -31,6 +31,7 @@ import moe.nea.firmament.events.HandledScreenPushREIEvent
 import moe.nea.firmament.features.inventory.CraftingOverlay
 import moe.nea.firmament.features.inventory.storageoverlay.StorageOverlayScreen
 import moe.nea.firmament.rei.recipes.SBCraftingRecipe
+import moe.nea.firmament.rei.recipes.SBEssenceUpgradeRecipe
 import moe.nea.firmament.rei.recipes.SBForgeRecipe
 import moe.nea.firmament.rei.recipes.SBKatRecipe
 import moe.nea.firmament.rei.recipes.SBMobDropRecipe
@@ -72,6 +73,7 @@ class FirmamentReiPlugin : REIClientPlugin {
         registry.add(SBForgeRecipe.Category)
         registry.add(SBMobDropRecipe.Category)
         registry.add(SBKatRecipe.Category)
+        registry.add(SBEssenceUpgradeRecipe.Category)
     }
 
     override fun registerExclusionZones(zones: ExclusionZones) {
@@ -92,6 +94,10 @@ class FirmamentReiPlugin : REIClientPlugin {
         registry.registerDisplayGenerator(
             SBKatRecipe.Category.categoryIdentifier,
             SkyblockKatRecipeDynamicGenerator)
+        registry.registerDisplayGenerator(
+            SBEssenceUpgradeRecipe.Category.categoryIdentifier,
+            SkyblockEssenceRecipeDynamicGenerator
+        )
     }
 
     override fun registerCollapsibleEntries(registry: CollapsibleEntryRegistry) {
diff --git a/src/main/kotlin/moe/nea/firmament/rei/SBItemEntryDefinition.kt b/src/main/kotlin/moe/nea/firmament/rei/SBItemEntryDefinition.kt
index 3897d01..19b26c5 100644
--- a/src/main/kotlin/moe/nea/firmament/rei/SBItemEntryDefinition.kt
+++ b/src/main/kotlin/moe/nea/firmament/rei/SBItemEntryDefinition.kt
@@ -22,6 +22,7 @@ import me.shedaniel.rei.api.common.entry.type.VanillaEntryTypes
 import net.minecraft.item.ItemStack
 import net.minecraft.registry.tag.TagKey
 import net.minecraft.text.Text
+import net.minecraft.util.Formatting
 import net.minecraft.util.Identifier
 import moe.nea.firmament.rei.FirmamentReiPlugin.Companion.asItemEntry
 import moe.nea.firmament.repo.ExpLadders
@@ -30,10 +31,13 @@ import moe.nea.firmament.repo.ItemCache.asItemStack
 import moe.nea.firmament.repo.RepoManager
 import moe.nea.firmament.util.FirmFormatters
 import moe.nea.firmament.util.HypixelPetInfo
+import moe.nea.firmament.util.LegacyFormattingCode
 import moe.nea.firmament.util.SkyblockId
 import moe.nea.firmament.util.appendLore
+import moe.nea.firmament.util.item.displayNameAccordingToNbt
 import moe.nea.firmament.util.petData
 import moe.nea.firmament.util.skyBlockId
+import moe.nea.firmament.util.withColor
 
 // TODO: add in extra data like pet info, into this structure
 data class PetData(
@@ -46,6 +50,7 @@ data class PetData(
         fun fromHypixel(petInfo: HypixelPetInfo) = PetData(
             petInfo.tier, petInfo.type, petInfo.exp,
         )
+
         fun forLevel(petId: String, rarity: Rarity, level: Int) = PetData(
             rarity, petId, ExpLadders.getExpLadder(petId, rarity).getPetExpForLevel(level).toDouble()
         )
@@ -60,6 +65,8 @@ data class SBItemStack(
     private var stackSize: Int,
     private var petData: PetData?,
     val extraLore: List<Text> = emptyList(),
+    // TODO: grab this star data from nbt if possible
+    val stars: Int = 0,
 ) {
 
     fun getStackSize() = stackSize
@@ -67,6 +74,7 @@ data class SBItemStack(
         this.stackSize = stackSize
         this.itemStack_ = null
     }
+
     fun getPetData() = petData
     fun setPetData(petData: PetData?) {
         this.petData = petData
@@ -132,12 +140,42 @@ data class SBItemStack(
                 injectReplacementDataForPets(replacementData)
                 return@run neuItem.asItemStack(idHint = skyblockId, replacementData).copyWithCount(stackSize)
                     .also { it.appendLore(extraLore) }
+                    .also { enhanceStatsByStars(it, stars) }
             }
             if (itemStack_ == null)
                 itemStack_ = itemStack
             return itemStack
         }
 
+
+    private fun starString(stars: Int): Text {
+        if (stars <= 0) return Text.empty()
+        val tiers = listOf(
+            LegacyFormattingCode.GOLD,
+            LegacyFormattingCode.LIGHT_PURPLE,
+            LegacyFormattingCode.AQUA,
+        )
+        val maxStars = 5
+        if (stars > tiers.size * maxStars) return Text.literal(" ${stars}✪").withColor(Formatting.RED)
+        val starBaseTier = (stars - 1) / maxStars
+        val starBaseColor = tiers[starBaseTier]
+        val starsInCurrentTier = stars - starBaseTier * maxStars
+        val starString = Text.literal(" " + "✪".repeat(starsInCurrentTier)).withColor(starBaseColor.modern)
+        if (starBaseTier > 0) {
+            val starLastTier = tiers[starBaseTier - 1]
+            val starsInLastTier = 5 - starsInCurrentTier
+            starString.append(Text.literal("✪".repeat(starsInLastTier)).withColor(starLastTier.modern))
+        }
+        return starString
+    }
+
+    private fun enhanceStatsByStars(itemStack: ItemStack, stars: Int) {
+        if (stars == 0) return
+        // TODO: increase stats and add the star level into the nbt data so star displays work
+        itemStack.displayNameAccordingToNbt = itemStack.displayNameAccordingToNbt.copy()
+            .append(starString(stars))
+    }
+
     fun asImmutableItemStack(): ItemStack {
         return itemStack
     }
@@ -179,11 +217,11 @@ object SBItemEntryDefinition : EntryDefinition<SBItemStack> {
     }
 
     override fun wildcard(entry: EntryStack<SBItemStack>?, value: SBItemStack): SBItemStack {
-        return value.copy(stackSize = 1)
+        return value.copy(stackSize = 1, petData = null, stars = 0, extraLore = listOf())
     }
 
     override fun normalize(entry: EntryStack<SBItemStack>?, value: SBItemStack): SBItemStack {
-        return value.copy(stackSize = 1)
+        return wildcard(entry, value)
     }
 
     override fun copy(entry: EntryStack<SBItemStack>?, value: SBItemStack): SBItemStack {
diff --git a/src/main/kotlin/moe/nea/firmament/rei/SkyblockCraftingRecipeDynamicGenerator.kt b/src/main/kotlin/moe/nea/firmament/rei/SkyblockCraftingRecipeDynamicGenerator.kt
index ead2119..864a5c7 100644
--- a/src/main/kotlin/moe/nea/firmament/rei/SkyblockCraftingRecipeDynamicGenerator.kt
+++ b/src/main/kotlin/moe/nea/firmament/rei/SkyblockCraftingRecipeDynamicGenerator.kt
@@ -18,9 +18,11 @@ import me.shedaniel.rei.api.client.view.ViewSearchBuilder
 import me.shedaniel.rei.api.common.display.Display
 import me.shedaniel.rei.api.common.entry.EntryStack
 import moe.nea.firmament.rei.recipes.SBCraftingRecipe
+import moe.nea.firmament.rei.recipes.SBEssenceUpgradeRecipe
 import moe.nea.firmament.rei.recipes.SBForgeRecipe
 import moe.nea.firmament.rei.recipes.SBKatRecipe
 import moe.nea.firmament.rei.recipes.SBMobDropRecipe
+import moe.nea.firmament.repo.EssenceRecipeProvider
 import moe.nea.firmament.repo.RepoManager
 
 
@@ -35,6 +37,8 @@ val SkyblockMobDropRecipeDynamicGenerator =
 
 val SkyblockKatRecipeDynamicGenerator =
     neuDisplayGenerator<SBKatRecipe, NEUKatUpgradeRecipe> { SBKatRecipe(it) }
+val SkyblockEssenceRecipeDynamicGenerator =
+    neuDisplayGenerator<SBEssenceUpgradeRecipe, EssenceRecipeProvider.EssenceUpgradeRecipe> { SBEssenceUpgradeRecipe(it) }
 
 inline fun <D : Display, reified T : NEURecipe> neuDisplayGenerator(crossinline mapper: (T) -> D) =
     object : DynamicDisplayGenerator<D> {
diff --git a/src/main/kotlin/moe/nea/firmament/rei/recipes/SBEssenceUpgradeRecipe.kt b/src/main/kotlin/moe/nea/firmament/rei/recipes/SBEssenceUpgradeRecipe.kt
new file mode 100644
index 0000000..fbf0687
--- /dev/null
+++ b/src/main/kotlin/moe/nea/firmament/rei/recipes/SBEssenceUpgradeRecipe.kt
@@ -0,0 +1,67 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.rei.recipes
+
+import me.shedaniel.math.Point
+import me.shedaniel.math.Rectangle
+import me.shedaniel.rei.api.client.gui.Renderer
+import me.shedaniel.rei.api.client.gui.widgets.Widget
+import me.shedaniel.rei.api.client.gui.widgets.Widgets
+import me.shedaniel.rei.api.client.registry.display.DisplayCategory
+import me.shedaniel.rei.api.common.category.CategoryIdentifier
+import net.minecraft.text.Text
+import moe.nea.firmament.Firmament
+import moe.nea.firmament.rei.SBItemEntryDefinition
+import moe.nea.firmament.rei.SBItemStack
+import moe.nea.firmament.repo.EssenceRecipeProvider
+import moe.nea.firmament.util.SkyblockId
+
+class SBEssenceUpgradeRecipe(override val neuRecipe: EssenceRecipeProvider.EssenceUpgradeRecipe) : SBRecipe() {
+    object Category : DisplayCategory<SBEssenceUpgradeRecipe> {
+        override fun getCategoryIdentifier(): CategoryIdentifier<SBEssenceUpgradeRecipe> =
+            CategoryIdentifier.of(Firmament.MOD_ID, "essence_upgrade")
+
+        override fun getTitle(): Text {
+            return Text.literal("Essence Upgrades")
+        }
+
+        override fun getIcon(): Renderer {
+            return SBItemEntryDefinition.getEntry(SkyblockId("ESSENCE_WITHER"))
+        }
+
+        override fun setupDisplay(display: SBEssenceUpgradeRecipe, bounds: Rectangle): List<Widget> {
+            val recipe = display.neuRecipe
+            val list = mutableListOf<Widget>()
+            list.add(Widgets.createRecipeBase(bounds))
+            list.add(Widgets.createSlot(Point(bounds.minX + 12, bounds.centerY - 8 - 18 / 2))
+                         .markInput()
+                         .entry(SBItemEntryDefinition.getEntry(SBItemStack(recipe.itemId).copy(stars = recipe.starCountAfter - 1))))
+            list.add(Widgets.createSlot(Point(bounds.minX + 12, bounds.centerY - 8 + 18 / 2))
+                         .markInput()
+                         .entry(SBItemEntryDefinition.getEntry(recipe.essenceIngredient)))
+            list.add(Widgets.createSlot(Point(bounds.maxX - 12 - 16, bounds.centerY - 8))
+                         .markOutput()
+                         .entry(SBItemEntryDefinition.getEntry(SBItemStack(recipe.itemId).copy(stars = recipe.starCountAfter))))
+            val extraItems = recipe.extraItems
+            list.add(Widgets.createArrow(Point(bounds.centerX - 24 / 2,
+                                               if (extraItems.isEmpty()) bounds.centerY - 17 / 2
+                                               else bounds.centerY + 18 / 2)))
+            for ((index, item) in extraItems.withIndex()) {
+                list.add(Widgets.createSlot(
+                    Point(bounds.centerX - extraItems.size * 16 / 2 - 2 / 2 + index * 18,
+                          bounds.centerY - 18 / 2))
+                             .markInput()
+                             .entry(SBItemEntryDefinition.getEntry(item)))
+            }
+            return list
+        }
+    }
+
+    override fun getCategoryIdentifier(): CategoryIdentifier<*> {
+        return Category.categoryIdentifier
+    }
+}
diff --git a/src/main/kotlin/moe/nea/firmament/repo/BetterRepoRecipeCache.kt b/src/main/kotlin/moe/nea/firmament/repo/BetterRepoRecipeCache.kt
new file mode 100644
index 0000000..9ccf72d
--- /dev/null
+++ b/src/main/kotlin/moe/nea/firmament/repo/BetterRepoRecipeCache.kt
@@ -0,0 +1,33 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.repo
+
+import io.github.moulberry.repo.IReloadable
+import io.github.moulberry.repo.NEURepository
+import io.github.moulberry.repo.data.NEURecipe
+import moe.nea.firmament.util.SkyblockId
+
+class BetterRepoRecipeCache(val essenceRecipeProvider: EssenceRecipeProvider) : IReloadable {
+    var usages: Map<SkyblockId, Set<NEURecipe>> = mapOf()
+    var recipes: Map<SkyblockId, Set<NEURecipe>> = mapOf()
+
+    override fun reload(repository: NEURepository) {
+        val usages = mutableMapOf<SkyblockId, MutableSet<NEURecipe>>()
+        val recipes = mutableMapOf<SkyblockId, MutableSet<NEURecipe>>()
+        val baseRecipes = repository.items.items.values
+            .asSequence()
+            .flatMap { it.recipes }
+        val extraRecipes = essenceRecipeProvider.recipes
+        (baseRecipes + extraRecipes)
+            .forEach { recipe ->
+                recipe.allInputs.forEach { usages.getOrPut(SkyblockId(it.itemId), ::mutableSetOf).add(recipe) }
+                recipe.allOutputs.forEach { recipes.getOrPut(SkyblockId(it.itemId), ::mutableSetOf).add(recipe) }
+            }
+        this.usages = usages
+        this.recipes = recipes
+    }
+}
diff --git a/src/main/kotlin/moe/nea/firmament/repo/EssenceRecipeProvider.kt b/src/main/kotlin/moe/nea/firmament/repo/EssenceRecipeProvider.kt
new file mode 100644
index 0000000..09bc49c
--- /dev/null
+++ b/src/main/kotlin/moe/nea/firmament/repo/EssenceRecipeProvider.kt
@@ -0,0 +1,54 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.repo
+
+import io.github.moulberry.repo.IReloadable
+import io.github.moulberry.repo.NEURepository
+import io.github.moulberry.repo.data.NEUIngredient
+import io.github.moulberry.repo.data.NEURecipe
+import moe.nea.firmament.util.SkyblockId
+
+class EssenceRecipeProvider : IReloadable {
+    data class EssenceUpgradeRecipe(
+        val itemId: SkyblockId,
+        val starCountAfter: Int,
+        val essenceCost: Int,
+        val essenceType: String, // TODO: replace with proper type
+        val extraItems: List<NEUIngredient>,
+    ) : NEURecipe {
+        val essenceIngredient= NEUIngredient.fromString("${essenceType}:$essenceCost")
+        val allUpgradeComponents = listOf(essenceIngredient) + extraItems
+
+        override fun getAllInputs(): Collection<NEUIngredient> {
+            return listOf(NEUIngredient.fromString(itemId.neuItem + ":1")) + allUpgradeComponents
+        }
+
+        override fun getAllOutputs(): Collection<NEUIngredient> {
+            return listOf(NEUIngredient.fromString(itemId.neuItem + ":1"))
+        }
+    }
+
+    var recipes = listOf<EssenceUpgradeRecipe>()
+        private set
+
+    override fun reload(repository: NEURepository) {
+        val recipes = mutableListOf<EssenceUpgradeRecipe>()
+        for ((neuId, costs) in repository.constants.essenceCost.costs) {
+            for ((starCountAfter, essenceCost) in costs.essenceCosts.entries) {
+                val items = costs.itemCosts[starCountAfter] ?: emptyList()
+                recipes.add(
+                    EssenceUpgradeRecipe(
+                        SkyblockId(neuId),
+                        starCountAfter,
+                        essenceCost,
+                        "ESSENCE_" + costs.type.uppercase(), // how flimsy
+                        items.map { NEUIngredient.fromString(it) }))
+            }
+        }
+        this.recipes = recipes
+    }
+}
diff --git a/src/main/kotlin/moe/nea/firmament/repo/RepoDownloadManager.kt b/src/main/kotlin/moe/nea/firmament/repo/RepoDownloadManager.kt
index 1c27a97..afd9b9f 100644
--- a/src/main/kotlin/moe/nea/firmament/repo/RepoDownloadManager.kt
+++ b/src/main/kotlin/moe/nea/firmament/repo/RepoDownloadManager.kt
@@ -1,28 +1,34 @@
 /*
  * SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+ * SPDX-FileCopyrightText: 2024 Linnea Gräf <nea@nea.moe>
  *
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
 package moe.nea.firmament.repo
 
-import io.ktor.client.call.*
-import io.ktor.client.request.*
-import io.ktor.client.statement.*
-import io.ktor.utils.io.jvm.nio.*
+import io.ktor.client.call.body
+import io.ktor.client.request.get
+import io.ktor.client.statement.bodyAsChannel
+import io.ktor.utils.io.jvm.nio.copyTo
+import java.io.IOException
+import java.nio.file.Files
+import java.nio.file.Path
+import java.nio.file.StandardOpenOption
+import java.util.zip.ZipInputStream
 import kotlinx.coroutines.CoroutineName
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.withContext
 import kotlinx.serialization.Serializable
+import kotlin.io.path.createDirectories
+import kotlin.io.path.exists
+import kotlin.io.path.inputStream
+import kotlin.io.path.outputStream
+import kotlin.io.path.readText
+import kotlin.io.path.writeText
 import moe.nea.firmament.Firmament
 import moe.nea.firmament.Firmament.logger
 import moe.nea.firmament.util.iterate
-import java.io.IOException
-import java.nio.file.Files
-import java.nio.file.Path
-import java.nio.file.StandardOpenOption
-import java.util.zip.ZipInputStream
-import kotlin.io.path.*
 
 
 object RepoDownloadManager {
@@ -55,6 +61,9 @@ object RepoDownloadManager {
     private class GithubCommitsResponse(val sha: String)
 
     private suspend fun requestLatestGithubSha(): String? {
+        if (RepoManager.Config.branch == "prerelease") {
+            RepoManager.Config.branch = "master"
+        }
         val response =
             Firmament.httpClient.get("https://api.github.com/repos/${RepoManager.Config.username}/${RepoManager.Config.reponame}/commits/${RepoManager.Config.branch}")
         if (response.status.value != 200) {
diff --git a/src/main/kotlin/moe/nea/firmament/repo/RepoManager.kt b/src/main/kotlin/moe/nea/firmament/repo/RepoManager.kt
index f556a8b..179b720 100644
--- a/src/main/kotlin/moe/nea/firmament/repo/RepoManager.kt
+++ b/src/main/kotlin/moe/nea/firmament/repo/RepoManager.kt
@@ -1,5 +1,6 @@
 /*
  * SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+ * SPDX-FileCopyrightText: 2024 Linnea Gräf <nea@nea.moe>
  *
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
@@ -28,12 +29,12 @@ object RepoManager {
     object Config : ManagedConfig("repo") {
         var username by string("username") { "NotEnoughUpdates" }
         var reponame by string("reponame") { "NotEnoughUpdates-REPO" }
-        var branch by string("branch") { "prerelease" }
+        var branch by string("branch") { "master" }
         val autoUpdate by toggle("autoUpdate") { true }
         val reset by button("reset") {
             username = "NotEnoughUpdates"
             reponame = "NotEnoughUpdates-REPO"
-            branch = "prerelease"
+            branch = "master"
             save()
         }
 
@@ -66,12 +67,17 @@ object RepoManager {
         }
     }
 
-    private val recipeCache = NEURecipeCache.forRepo(neuRepo)
+    val essenceRecipeProvider = EssenceRecipeProvider()
+    val recipeCache = BetterRepoRecipeCache(essenceRecipeProvider)
+    init {
+    	neuRepo.registerReloadListener(essenceRecipeProvider)
+    	neuRepo.registerReloadListener(recipeCache)
+    }
 
     fun getAllRecipes() = neuRepo.items.items.values.asSequence().flatMap { it.recipes }
 
-    fun getRecipesFor(skyblockId: SkyblockId): Set<NEURecipe> = recipeCache.recipes[skyblockId.neuItem] ?: setOf()
-    fun getUsagesFor(skyblockId: SkyblockId): Set<NEURecipe> = recipeCache.usages[skyblockId.neuItem] ?: setOf()
+    fun getRecipesFor(skyblockId: SkyblockId): Set<NEURecipe> = recipeCache.recipes[skyblockId] ?: setOf()
+    fun getUsagesFor(skyblockId: SkyblockId): Set<NEURecipe> = recipeCache.usages[skyblockId] ?: setOf()
 
     private fun trySendClientboundUpdateRecipesPacket(): Boolean {
         return MinecraftClient.getInstance().world != null && MinecraftClient.getInstance().networkHandler?.onSynchronizeRecipes(
diff --git a/src/main/kotlin/moe/nea/firmament/util/item/NbtItemData.kt b/src/main/kotlin/moe/nea/firmament/util/item/NbtItemData.kt
index ef22325..c33c47f 100644
--- a/src/main/kotlin/moe/nea/firmament/util/item/NbtItemData.kt
+++ b/src/main/kotlin/moe/nea/firmament/util/item/NbtItemData.kt
@@ -18,8 +18,11 @@ var ItemStack.loreAccordingToNbt
         set(DataComponentTypes.LORE, LoreComponent(value))
     }
 
-val ItemStack.displayNameAccordingToNbt
+var ItemStack.displayNameAccordingToNbt: Text
     get() = get(DataComponentTypes.CUSTOM_NAME) ?: get(DataComponentTypes.ITEM_NAME) ?: item.name
+    set(value) {
+        set(DataComponentTypes.CUSTOM_NAME, value)
+    }
 
 fun ItemStack.setCustomName(text: Text) {
     set(DataComponentTypes.CUSTOM_NAME, text)
diff --git a/src/main/kotlin/moe/nea/firmament/util/textutil.kt b/src/main/kotlin/moe/nea/firmament/util/textutil.kt
index 5f9379a..38b7daf 100644
--- a/src/main/kotlin/moe/nea/firmament/util/textutil.kt
+++ b/src/main/kotlin/moe/nea/firmament/util/textutil.kt
@@ -9,6 +9,7 @@ package moe.nea.firmament.util
 
 import net.minecraft.text.MutableText
 import net.minecraft.text.PlainTextContent
+import net.minecraft.text.Style
 import net.minecraft.text.Text
 import net.minecraft.text.TranslatableTextContent
 import net.minecraft.util.Formatting
@@ -98,7 +99,7 @@ val Text.unformattedString: String
     get() = string.removeColorCodes()
 
 
-fun MutableText.withColor(formatting: Formatting) = this.styled { it.withColor(formatting) }
+fun MutableText.withColor(formatting: Formatting) = this.styled { it.withColor(formatting).withItalic(false) }
 
 fun Text.transformEachRecursively(function: (Text) -> Text): Text {
     val c = this.content