Add custom textures to placed skulls

9 files changed, 184 insertions, 7 deletions

diff --git a/docs/Texture Pack Format.md b/docs/Texture Pack Format.md
index bd06b33..587bcd3 100644
--- a/docs/Texture Pack Format.md
+++ b/docs/Texture Pack Format.md
@@ -8,11 +8,19 @@ SPDX-License-Identifier: CC0-1.0
 
 ## Items by internal id (ExtraAttributes)
 
-Find the internal id of the item. This is usually stored in the ExtraAttributes tag (i will soon-ish add a command for
-finding the texture pack id specifically). Once you found it, create an item model in a resource pack like you would for
+Find the internal id of the item. This is usually stored in the ExtraAttributes tag (Check the Power User Config for 
+keybinds). Once you found it, create an item model in a resource pack like you would for
 a vanilla item model, but at the coordinate `firmskyblock:<internalid>`. So for an aspect of the end, this would be 
 `firmskyblock:models/item/aspect_of_the_end.json` (or `assets/firmskyblock/models/item/aspect_of_the_end.json`). Then,
 just use a normal minecraft item model. See https://github.com/romangraef/BadSkyblockTP/blob/master/assets/firmskyblock/models/item/magma_rod.json
 as an example.
 
+## (Placed) Skulls by texture id
+
+Find the texture id of a skull. This is the hash part of an url like
+`https://textures.minecraft.net/texture/bc8ea1f51f253ff5142ca11ae45193a4ad8c3ab5e9c6eec8ba7a4fcb7bac40` (so after the
+/texture/). You can find it in game for placed skulls using the keybinding in the Power User Config. Then place the
+replacement texture at `firmskyblock:textures/placedskulls/<thathash>.png`. Keep in mind that you will probably replace
+the texture with another skin texture, meaning that skin texture has it's own hash. Do not mix those up, you need to use
+the hash of the old skin.
 
diff --git a/src/main/java/moe/nea/firmament/mixins/MixinSkullBlockEntityRenderer.java b/src/main/java/moe/nea/firmament/mixins/MixinSkullBlockEntityRenderer.java
new file mode 100644
index 0000000..7f54150
--- /dev/null
+++ b/src/main/java/moe/nea/firmament/mixins/MixinSkullBlockEntityRenderer.java
@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.mixins;
+
+import com.mojang.authlib.GameProfile;
+import moe.nea.firmament.features.texturepack.CustomSkyBlockTextures;
+import net.minecraft.block.SkullBlock;
+import net.minecraft.client.render.RenderLayer;
+import net.minecraft.client.render.block.entity.SkullBlockEntityRenderer;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(SkullBlockEntityRenderer.class)
+public class MixinSkullBlockEntityRenderer {
+    @Inject(method = "getRenderLayer", at = @At("HEAD"), cancellable = true)
+    private static void onGetRenderLayer(SkullBlock.SkullType type, GameProfile profile, CallbackInfoReturnable<RenderLayer> cir) {
+        CustomSkyBlockTextures.INSTANCE.modifySkullTexture(type, profile, cir);
+    }
+}
diff --git a/src/main/kotlin/moe/nea/firmament/Firmament.kt b/src/main/kotlin/moe/nea/firmament/Firmament.kt
index 2ba54a8..6a6007e 100644
--- a/src/main/kotlin/moe/nea/firmament/Firmament.kt
+++ b/src/main/kotlin/moe/nea/firmament/Firmament.kt
@@ -60,6 +60,7 @@ object Firmament {
 
     val json = Json {
         prettyPrint = DEBUG
+        isLenient = true
         ignoreUnknownKeys = true
         encodeDefaults = true
     }
diff --git a/src/main/kotlin/moe/nea/firmament/features/debug/PowerUserTools.kt b/src/main/kotlin/moe/nea/firmament/features/debug/PowerUserTools.kt
index 398042d..52834f3 100644
--- a/src/main/kotlin/moe/nea/firmament/features/debug/PowerUserTools.kt
+++ b/src/main/kotlin/moe/nea/firmament/features/debug/PowerUserTools.kt
@@ -6,17 +6,24 @@
 
 package moe.nea.firmament.features.debug
 
+import net.minecraft.block.SkullBlock
+import net.minecraft.block.entity.SkullBlockEntity
 import net.minecraft.item.ItemStack
 import net.minecraft.text.Text
+import net.minecraft.util.hit.BlockHitResult
+import net.minecraft.util.hit.HitResult
 import moe.nea.firmament.events.CustomItemModelEvent
 import moe.nea.firmament.events.HandledScreenKeyPressedEvent
 import moe.nea.firmament.events.ItemTooltipEvent
 import moe.nea.firmament.events.ScreenOpenEvent
 import moe.nea.firmament.events.TickEvent
+import moe.nea.firmament.events.WorldKeyboardEvent
 import moe.nea.firmament.features.FirmamentFeature
+import moe.nea.firmament.features.texturepack.CustomSkyBlockTextures
 import moe.nea.firmament.gui.config.ManagedConfig
 import moe.nea.firmament.mixins.accessor.AccessorHandledScreen
 import moe.nea.firmament.util.ClipboardUtils
+import moe.nea.firmament.util.MC
 import moe.nea.firmament.util.skyBlockId
 
 object PowerUserTools : FirmamentFeature {
@@ -28,6 +35,7 @@ object PowerUserTools : FirmamentFeature {
         val copyItemId by keyBindingWithDefaultUnbound("copy-item-id")
         val copyTexturePackId by keyBindingWithDefaultUnbound("copy-texture-pack-id")
         val copyNbtData by keyBindingWithDefaultUnbound("copy-nbt-data")
+        val copySkullTexture by keyBindingWithDefaultUnbound("copy-skull-texture")
     }
 
     override val config
@@ -55,6 +63,29 @@ object PowerUserTools : FirmamentFeature {
             lastCopiedStackViewTime = true
             it.lines.add(text)
         }
+        WorldKeyboardEvent.subscribe {
+            if (it.matches(TConfig.copySkullTexture)) {
+                val p = MC.camera ?: return@subscribe
+                val blockHit = p.raycast(20.0, 0.0f, false) ?: return@subscribe
+                if (blockHit.type != HitResult.Type.BLOCK || blockHit !is BlockHitResult) {
+                    MC.sendChat(Text.translatable("firmament.tooltip.copied.skull.fail"))
+                    return@subscribe
+                }
+                val blockAt = p.world.getBlockState(blockHit.blockPos)?.block
+                val entity = p.world.getBlockEntity(blockHit.blockPos)
+                if (blockAt !is SkullBlock || entity !is SkullBlockEntity || entity.owner == null) {
+                    MC.sendChat(Text.translatable("firmament.tooltip.copied.skull.fail"))
+                    return@subscribe
+                }
+                val id = CustomSkyBlockTextures.getSkullTexture(entity.owner!!)
+                if (id == null) {
+                    MC.sendChat(Text.translatable("firmament.tooltip.copied.skull.fail"))
+                } else {
+                    ClipboardUtils.setTextContent(id.toString())
+                    MC.sendChat(Text.translatable("firmament.tooltip.copied.skull", id.toString()))
+                }
+            }
+        }
         TickEvent.subscribe {
             if (!lastCopiedStackViewTime)
                 lastCopiedStack = null
diff --git a/src/main/kotlin/moe/nea/firmament/features/texturepack/CustomSkyBlockTextures.kt b/src/main/kotlin/moe/nea/firmament/features/texturepack/CustomSkyBlockTextures.kt
index b086811..66c0987 100644
--- a/src/main/kotlin/moe/nea/firmament/features/texturepack/CustomSkyBlockTextures.kt
+++ b/src/main/kotlin/moe/nea/firmament/features/texturepack/CustomSkyBlockTextures.kt
@@ -6,11 +6,21 @@
 
 package moe.nea.firmament.features.texturepack
 
+import com.mojang.authlib.GameProfile
+import com.mojang.authlib.minecraft.MinecraftProfileTexture
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable
+import net.minecraft.block.SkullBlock
+import net.minecraft.client.MinecraftClient
+import net.minecraft.client.render.RenderLayer
+import net.minecraft.client.texture.PlayerSkinProvider
 import net.minecraft.client.util.ModelIdentifier
+import net.minecraft.util.Identifier
 import moe.nea.firmament.events.CustomItemModelEvent
 import moe.nea.firmament.events.TickEvent
 import moe.nea.firmament.features.FirmamentFeature
 import moe.nea.firmament.gui.config.ManagedConfig
+import moe.nea.firmament.util.IdentityCharacteristics
+import moe.nea.firmament.util.item.decodeProfileTextureProperty
 import moe.nea.firmament.util.skyBlockId
 
 object CustomSkyBlockTextures : FirmamentFeature {
@@ -19,6 +29,7 @@ object CustomSkyBlockTextures : FirmamentFeature {
 
     object TConfig : ManagedConfig(identifier) {
         val enabled by toggle("enabled") { true }
+        val skullsEnabled by toggle("skulls-enabled") { true }
         val cacheDuration by integer("cache-duration", 0, 20) { 1 }
     }
 
@@ -32,8 +43,50 @@ object CustomSkyBlockTextures : FirmamentFeature {
             it.overrideModel = ModelIdentifier("firmskyblock", id.identifier.path, "inventory")
         }
         TickEvent.subscribe {
-            if (it.tickCount % TConfig.cacheDuration == 0)
+            if (it.tickCount % TConfig.cacheDuration == 0) {
                 CustomItemModelEvent.clearCache()
+                skullTextureCache.clear()
+            }
         }
     }
+
+    private val skullTextureCache = mutableMapOf<IdentityCharacteristics<GameProfile>, Any>()
+    private val sentinelPresentInvalid = Object()
+
+    val mcUrlRegex = "https?://textures.minecraft.net/texture/([a-fA-F0-9]+)".toRegex()
+    fun getSkullId(profile: GameProfile): String? {
+        val textures = profile.properties.get(PlayerSkinProvider.TEXTURES)
+        val textureProperty = textures.singleOrNull() ?: return null
+        val texture = decodeProfileTextureProperty(textureProperty) ?: return null
+        val textureUrl =
+            texture.textures[MinecraftProfileTexture.Type.SKIN]?.url ?: return null
+        val mcUrlData = mcUrlRegex.matchEntire(textureUrl) ?: return null
+        return mcUrlData.groupValues[1]
+    }
+
+    fun getSkullTexture(profile: GameProfile): Identifier? {
+        val id = getSkullId(profile) ?: return null
+        return Identifier("firmskyblock", "textures/placedskull/$id.png")
+    }
+
+    fun modifySkullTexture(
+        type: SkullBlock.SkullType?,
+        profile: GameProfile?,
+        cir: CallbackInfoReturnable<RenderLayer>
+    ) {
+        if (type != SkullBlock.Type.PLAYER) return
+        if (!TConfig.skullsEnabled) return
+        if (profile == null) return
+        val ic = IdentityCharacteristics(profile)
+
+        val n = skullTextureCache.getOrPut(ic) {
+            val id = getSkullTexture(profile) ?: return@getOrPut sentinelPresentInvalid
+            if (!MinecraftClient.getInstance().resourceManager.getResource(id).isPresent) {
+                return@getOrPut sentinelPresentInvalid
+            }
+            return@getOrPut id
+        }
+        if (n === sentinelPresentInvalid) return
+        cir.returnValue = RenderLayer.getEntityTranslucent(n as Identifier)
+    }
 }
diff --git a/src/main/kotlin/moe/nea/firmament/util/IdentityCharacteristics.kt b/src/main/kotlin/moe/nea/firmament/util/IdentityCharacteristics.kt
new file mode 100644
index 0000000..e6dad79
--- /dev/null
+++ b/src/main/kotlin/moe/nea/firmament/util/IdentityCharacteristics.kt
@@ -0,0 +1,17 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.util
+
+class IdentityCharacteristics<T>(val value: T) {
+    override fun equals(other: Any?): Boolean {
+        return value === other
+    }
+
+    override fun hashCode(): Int {
+        return System.identityHashCode(value)
+    }
+}
diff --git a/src/main/kotlin/moe/nea/firmament/util/MC.kt b/src/main/kotlin/moe/nea/firmament/util/MC.kt
index 78f2eec..0c09306 100644
--- a/src/main/kotlin/moe/nea/firmament/util/MC.kt
+++ b/src/main/kotlin/moe/nea/firmament/util/MC.kt
@@ -7,21 +7,44 @@
 package moe.nea.firmament.util
 
 import io.github.moulberry.repo.data.Coordinate
+import java.util.concurrent.ConcurrentLinkedQueue
 import net.minecraft.client.MinecraftClient
 import net.minecraft.client.gui.screen.ingame.HandledScreen
+import net.minecraft.text.Text
 import net.minecraft.util.math.BlockPos
+import moe.nea.firmament.events.TickEvent
 
 object MC {
+
+    private val messageQueue = ConcurrentLinkedQueue<Text>()
+
+    init {
+        TickEvent.subscribe {
+            while (true) {
+                inGameHud.chatHud.addMessage(messageQueue.poll() ?: break)
+            }
+        }
+    }
+
+    fun sendChat(text: Text) {
+        if (instance.isOnThread)
+            inGameHud.chatHud.addMessage(text)
+        else
+            messageQueue.add(text)
+    }
+
     fun sendCommand(command: String) {
         player?.networkHandler?.sendCommand(command)
     }
 
+    inline val instance get() = MinecraftClient.getInstance()
     inline val keyboard get() = MinecraftClient.getInstance().keyboard
     inline val textureManager get() = MinecraftClient.getInstance().textureManager
     inline val inGameHud get() = MinecraftClient.getInstance().inGameHud
     inline val font get() = MinecraftClient.getInstance().textRenderer
     inline val soundManager get() = MinecraftClient.getInstance().soundManager
     inline val player get() = MinecraftClient.getInstance().player
+    inline val camera get() = MinecraftClient.getInstance().cameraEntity
     inline val world get() = MinecraftClient.getInstance().world
     inline var screen
         get() = MinecraftClient.getInstance().currentScreen
diff --git a/src/main/kotlin/moe/nea/firmament/util/item/SkullItemData.kt b/src/main/kotlin/moe/nea/firmament/util/item/SkullItemData.kt
index 5b440b1..4d4d386 100644
--- a/src/main/kotlin/moe/nea/firmament/util/item/SkullItemData.kt
+++ b/src/main/kotlin/moe/nea/firmament/util/item/SkullItemData.kt
@@ -11,14 +11,16 @@ package moe.nea.firmament.util.item
 import com.mojang.authlib.GameProfile
 import com.mojang.authlib.minecraft.MinecraftProfileTexture
 import com.mojang.authlib.properties.Property
-import java.util.UUID
+import java.util.*
 import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
+import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import net.minecraft.client.texture.PlayerSkinProvider
 import moe.nea.firmament.Firmament
+import moe.nea.firmament.util.assertTrueOr
 import moe.nea.firmament.util.json.DashlessUUIDSerializer
 import moe.nea.firmament.util.json.InstantAsLongSerializer
 
@@ -30,9 +32,9 @@ data class MinecraftProfileTextureKt(
 
 @Serializable
 data class MinecraftTexturesPayloadKt(
-    val textures: Map<MinecraftProfileTexture.Type, MinecraftProfileTextureKt>,
-    val profileId: UUID,
-    val profileName: String,
+    val textures: Map<MinecraftProfileTexture.Type, MinecraftProfileTextureKt> = mapOf(),
+    val profileId: UUID? = null,
+    val profileName: String? = null,
     val isPublic: Boolean = true,
     val timestamp: Instant = Clock.System.now(),
 )
@@ -43,3 +45,16 @@ fun GameProfile.setTextures(textures: MinecraftTexturesPayloadKt) {
     properties.put(PlayerSkinProvider.TEXTURES, Property(PlayerSkinProvider.TEXTURES, encoded))
 }
 
+fun decodeProfileTextureProperty(property: Property): MinecraftTexturesPayloadKt? {
+    assertTrueOr(property.name == PlayerSkinProvider.TEXTURES) { return null }
+    try {
+        val json = java.util.Base64.getDecoder().decode(property.value).decodeToString()
+        return Firmament.json.decodeFromString<MinecraftTexturesPayloadKt>(json)
+    } catch (e: Exception) {
+        // Malformed profile data
+        if (Firmament.DEBUG)
+            e.printStackTrace()
+        return null
+    }
+}
+
diff --git a/src/main/resources/assets/firmament/lang/en_us.json b/src/main/resources/assets/firmament/lang/en_us.json
index 72d9830..396e365 100644
--- a/src/main/resources/assets/firmament/lang/en_us.json
+++ b/src/main/resources/assets/firmament/lang/en_us.json
@@ -107,11 +107,13 @@
     "firmament.config.custom-skyblock-textures": "Custom SkyBlock Item Textures",
     "firmament.config.custom-skyblock-textures.cache-duration": "Model Cache Duration",
     "firmament.config.custom-skyblock-textures.enabled": "Enable Custom Item Textures",
+    "firmament.config.custom-skyblock-textures.skulls-enabled": "Enable Custom Placed Skull Textures",
     "firmament.config.fixes": "Fixes",
     "firmament.config.fixes.player-skins": "Fix unsigned Player Skins",
     "firmament.config.power-user.show-item-id": "Show SkyBlock Ids",
     "firmament.config.power-user.copy-item-id": "Copy SkyBlock Id",
     "firmament.config.power-user.copy-texture-pack-id": "Copy Texture Pack Id",
+    "firmament.config.power-user.copy-skull-texture": "Copy Placed Skull Id",
     "firmament.config.power-user.copy-nbt-data": "Copy NBT data",
     "firmament.config.power-user": "Power Users",
     "firmament.tooltip.skyblockid": "SkyBlock Id: %s",
@@ -119,5 +121,7 @@
     "firmament.tooltip.copied.skyblockid": "Copied SkyBlock Id: %s",
     "firmament.tooltip.copied.modelid.fail": "Failed to copy Texture Id",
     "firmament.tooltip.copied.modelid": "Copied Texture Id: %s",
+    "firmament.tooltip.copied.skull": "Copied Skull Id: %s",
+    "firmament.tooltip.copied.skull.fail": "Failed to copy skull id.",
     "firmament.tooltip.copied.nbt": "Copied NBT data"
 }