Made Hover Boots dyeable.

src/main/scala/li/cil/oc/client/renderer/item/HoverBootRenderer.scala

@@ -92,6 +92,8 @@ object HoverBootRenderer extends ModelBiped {
   bipedEars.isHidden = true
   bipedCloak.isHidden = true
 
+  var lightColor = 0x66DD55
+
   override def render(entity: Entity, f0: Float, f1: Float, f2: Float, f3: Float, f4: Float, f5: Float): Unit = {
     // Because Forge is being a dummy...
     isSneak = entity.isSneaking
@@ -104,7 +106,10 @@ object HoverBootRenderer extends ModelBiped {
       RenderState.disableLighting()
       GL11.glDepthFunc(GL11.GL_LEQUAL)
       GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE)
-      GL11.glColor3ub(0x66.toByte, 0xDD.toByte, 0x55.toByte)
+      val r = ((lightColor >>> 16) & 0xFF).toByte
+      val g = ((lightColor >>> 8) & 0xFF).toByte
+      val b = ((lightColor >>> 0) & 0xFF).toByte
+      GL11.glColor3ub(r, g, b)
 
       super.render(dt)
 

src/main/scala/li/cil/oc/common/item/HoverBoots.scala

@@ -1,19 +1,17 @@
 package li.cil.oc.common.item
 
-import cpw.mods.fml.relauncher.Side
+import cpw.mods.fml.relauncher.{Side, SideOnly}
-import cpw.mods.fml.relauncher.SideOnly
 import li.cil.oc.Settings
 import li.cil.oc.client.renderer.item.HoverBootRenderer
 import li.cil.oc.common.item.data.HoverBootsData
+import li.cil.oc.util.ItemColorizer
 import net.minecraft.client.model.ModelBiped
-import net.minecraft.entity.Entity
+import net.minecraft.client.renderer.texture.IIconRegister
-import net.minecraft.entity.EntityLivingBase
 import net.minecraft.entity.player.EntityPlayer
-import net.minecraft.item.EnumRarity
+import net.minecraft.entity.{Entity, EntityLivingBase}
-import net.minecraft.item.ItemArmor
+import net.minecraft.item.{EnumRarity, ItemArmor, ItemStack}
-import net.minecraft.item.ItemStack
+import net.minecraft.potion.{Potion, PotionEffect}
-import net.minecraft.potion.Potion
+import net.minecraft.util.IIcon
-import net.minecraft.potion.PotionEffect
 import net.minecraft.world.World
 
 class HoverBoots extends ItemArmor(ItemArmor.ArmorMaterial.DIAMOND, 0, 3) with traits.SimpleItem with traits.Chargeable {
@@ -56,7 +54,10 @@ class HoverBoots extends ItemArmor(ItemArmor.ArmorMaterial.DIAMOND, 0, 3) with t
 
   @SideOnly(Side.CLIENT)
   override def getArmorModel(entityLiving: EntityLivingBase, itemStack: ItemStack, armorSlot: Int): ModelBiped = {
-    if (armorSlot == armorType) HoverBootRenderer
+    if (armorSlot == armorType) {
+      HoverBootRenderer.lightColor = if (ItemColorizer.hasColor(itemStack)) ItemColorizer.getColor(itemStack) else 0x66DD55
+      HoverBootRenderer
+    }
     else super.getArmorModel(entityLiving, itemStack, armorSlot)
   }
 
@@ -72,6 +73,28 @@ class HoverBoots extends ItemArmor(ItemArmor.ArmorMaterial.DIAMOND, 0, 3) with t
     }
   }
 
+  @SideOnly(Side.CLIENT)
+  var lightOverlay: IIcon = null
+
+  @SideOnly(Side.CLIENT)
+  override def registerIcons(ir: IIconRegister): Unit = {
+    this.itemIcon = ir.registerIcon(this.getIconString)
+    this.lightOverlay = ir.registerIcon(this.getIconString + "Light")
+  }
+
+  @SideOnly(Side.CLIENT)
+  override def requiresMultipleRenderPasses(): Boolean = true
+
+  @SideOnly(Side.CLIENT)
+  override def getIconFromDamageForRenderPass(meta : Int, pass : Int): IIcon = if (pass == 1 ) lightOverlay else super.getIconFromDamageForRenderPass(meta, pass)
+
+  override def getColorFromItemStack(itemStack: ItemStack, pass: Int): Int = {
+    if (pass == 1) {
+      return if (ItemColorizer.hasColor(itemStack)) ItemColorizer.getColor(itemStack) else 0x66DD55
+    }
+    super.getColorFromItemStack(itemStack, pass)
+  }
+
   override def getDisplayDamage(stack: ItemStack): Int = {
     val data = new HoverBootsData(stack)
     (Settings.get.bufferHoverBoots * (1 - data.charge / Settings.get.bufferHoverBoots)).toInt

src/main/scala/li/cil/oc/common/recipe/ColorizeRecipe.scala

@@ -0,0 +1,85 @@
+package li.cil.oc.common.recipe
+
+import li.cil.oc.util.{Color, ItemColorizer}
+import net.minecraft.entity.passive.EntitySheep
+import net.minecraft.inventory.InventoryCrafting
+import net.minecraft.item.crafting.IRecipe
+import net.minecraft.item.{Item, ItemStack}
+import net.minecraft.world.World
+
+/**
+  * @author asie, Vexatos
+  */
+class ColorizeRecipe(target: Item, source: Array[Item] = null) extends IRecipe {
+  val targetItem = target
+  val sourceItems = if (source != null) source else Array(targetItem)
+
+  override def matches(crafting: InventoryCrafting, world: World): Boolean = {
+    val stacks = (0 until crafting.getSizeInventory).flatMap(i => Option(crafting.getStackInSlot(i)))
+    val targets = stacks.filter(stack => sourceItems.contains(stack.getItem) || stack.getItem == targetItem)
+    val other = stacks.filterNot(targets.contains)
+    targets.size == 1 && other.nonEmpty && other.forall(Color.isDye)
+  }
+
+  override def getCraftingResult(crafting: InventoryCrafting): ItemStack = {
+    var targetStack: ItemStack = null
+    val color = Array[Int](0, 0, 0)
+    var colorCount = 0
+    var maximum = 0
+
+    (0 until crafting.getSizeInventory).flatMap(i => Option(crafting.getStackInSlot(i))).foreach { stack =>
+      if (sourceItems.contains(stack.getItem)
+        || stack.getItem == targetItem) {
+        targetStack = stack.copy()
+        targetStack.stackSize = 1
+      } else {
+        val dye = Color.findDye(stack)
+        if (dye.isEmpty)
+          return null
+
+        val itemColor = EntitySheep.fleeceColorTable(15 - Color.dyes.indexOf(dye.get))
+        val red = (itemColor(0) * 255.0F).toInt
+        val green = (itemColor(1) * 255.0F).toInt
+        val blue = (itemColor(2) * 255.0F).toInt
+        maximum += Math.max(red, Math.max(green, blue))
+        color(0) += red
+        color(1) += green
+        color(2) += blue
+        colorCount = colorCount + 1
+      }
+    }
+
+    if (targetStack == null) return null
+
+    if (targetItem == targetStack.getItem) {
+      if (ItemColorizer.hasColor(targetStack)) {
+        val itemColor = ItemColorizer.getColor(targetStack)
+        val red = (itemColor >> 16 & 255).toFloat / 255.0F
+        val green = (itemColor >> 8 & 255).toFloat / 255.0F
+        val blue = (itemColor & 255).toFloat / 255.0F
+        maximum = (maximum.toFloat + Math.max(red, Math.max(green, blue)) * 255.0F).toInt
+        color(0) = (color(0).toFloat + red * 255.0F).toInt
+        color(1) = (color(1).toFloat + green * 255.0F).toInt
+        color(2) = (color(2).toFloat + blue * 255.0F).toInt
+        colorCount = colorCount + 1
+      }
+    } else if (sourceItems.contains(targetStack.getItem)) {
+      targetStack = new ItemStack(targetItem, targetStack.stackSize, targetStack.getItemDamage)
+    }
+
+    var red = color(0) / colorCount
+    var green = color(1) / colorCount
+    var blue = color(2) / colorCount
+    val max = maximum.toFloat / colorCount.toFloat
+    val div = Math.max(red, Math.max(green, blue)).toFloat
+    red = (red.toFloat * max / div).toInt
+    green = (green.toFloat * max / div).toInt
+    blue = (blue.toFloat * max / div).toInt
+    ItemColorizer.setColor(targetStack, (red << 16) | (green << 8) | blue)
+    targetStack
+  }
+
+  override def getRecipeSize = 10
+
+  override def getRecipeOutput = null
+}

src/main/scala/li/cil/oc/common/recipe/DecolorizeRecipe.scala

@@ -0,0 +1,44 @@
+package li.cil.oc.common.recipe
+
+import li.cil.oc.util.ItemColorizer
+import net.minecraft.init.Items
+import net.minecraft.inventory.InventoryCrafting
+import net.minecraft.item.crafting.IRecipe
+import net.minecraft.item.{Item, ItemStack}
+import net.minecraft.world.World
+
+/**
+  * @author Vexatos
+  */
+class DecolorizeRecipe(target: Item) extends IRecipe {
+  val targetItem = target
+
+  override def matches(crafting: InventoryCrafting, world: World): Boolean = {
+    val stacks = (0 until crafting.getSizeInventory).flatMap(i => Option(crafting.getStackInSlot(i)))
+    val targets = stacks.filter(stack => stack.getItem == targetItem)
+    val other = stacks.filterNot(targets.contains)
+    targets.size == 1 && other.size == 1 && other.forall(_.getItem == Items.water_bucket)
+  }
+
+  override def getCraftingResult(crafting: InventoryCrafting): ItemStack = {
+    var targetStack: ItemStack = null
+
+    (0 until crafting.getSizeInventory).flatMap(i => Option(crafting.getStackInSlot(i))).foreach { stack =>
+      if (stack.getItem == targetItem) {
+        targetStack = stack.copy()
+        targetStack.stackSize = 1
+      } else if (stack.getItem != Items.water_bucket) {
+        return null
+      }
+    }
+
+    if (targetStack == null) return null
+
+    ItemColorizer.removeColor(targetStack)
+    targetStack
+  }
+
+  override def getRecipeSize = 10
+
+  override def getRecipeOutput = null
+}

src/main/scala/li/cil/oc/common/recipe/Recipes.scala

@@ -89,6 +89,8 @@ object Recipes {
   def init() {
     RecipeSorter.register(Settings.namespace + "extshaped", classOf[ExtendedShapedOreRecipe], Category.SHAPED, "after:forge:shapedore")
     RecipeSorter.register(Settings.namespace + "extshapeless", classOf[ExtendedShapelessOreRecipe], Category.SHAPELESS, "after:forge:shapelessore")
+    RecipeSorter.register(Settings.namespace + "colorizer", classOf[ColorizeRecipe], Category.SHAPELESS, "after:forge:shapelessore")
+    RecipeSorter.register(Settings.namespace + "decolorizer", classOf[DecolorizeRecipe], Category.SHAPELESS, "after:oc:decolorizer")
 
     for ((name, stack) <- oreDictEntries) {
       if (!OreDictionary.getOres(name).contains(stack)) {
@@ -322,6 +324,10 @@ object Recipes {
         api.Items.get(Constants.BlockName.AccessPoint).createItemStack(1))
       GameRegistry.addShapelessRecipe(api.Items.get(Constants.BlockName.Relay).createItemStack(1),
         api.Items.get(Constants.BlockName.Switch).createItemStack(1))
+
+      // Hover Boot dyeing
+      GameRegistry.addRecipe(new ColorizeRecipe(api.Items.get(Constants.ItemName.HoverBoots).item()))
+      GameRegistry.addRecipe(new DecolorizeRecipe(api.Items.get(Constants.ItemName.HoverBoots).item()))
     }
     catch {
       case e: Throwable => OpenComputers.log.error("Error parsing recipes, you may not be able to craft any items from this mod!", e)

src/main/scala/li/cil/oc/util/ItemColorizer.scala

@@ -0,0 +1,47 @@
+package li.cil.oc.util
+
+import net.minecraft.item.ItemStack
+import net.minecraft.nbt.NBTTagCompound
+
+/**
+  * @author asie, Vexatos
+  */
+object ItemColorizer {
+  /**
+    * Return whether the specified armor ItemStack has a color.
+    */
+  def hasColor(stack: ItemStack): Boolean = stack.hasTagCompound && stack.getTagCompound.hasKey("display") && stack.getTagCompound.getCompoundTag("display").hasKey("color")
+
+  /**
+    * Return the color for the specified armor ItemStack.
+    */
+  def getColor(stack: ItemStack): Int = {
+    val tag = stack.getTagCompound
+    if (tag != null) {
+      val displayTag = tag.getCompoundTag("display")
+      if (displayTag == null) -1 else if (displayTag.hasKey("color")) displayTag.getInteger("color") else -1
+    }
+    else -1
+  }
+
+  def removeColor(stack: ItemStack) {
+    val tag = stack.getTagCompound
+    if (tag != null) {
+      val displayTag = tag.getCompoundTag("display")
+      if (displayTag.hasKey("color")) displayTag.removeTag("color")
+    }
+  }
+
+  def setColor(stack: ItemStack, color: Int) {
+    var tag = stack.getTagCompound
+    if (tag == null) {
+      tag = new NBTTagCompound
+      stack.setTagCompound(tag)
+    }
+    val displayTag = tag.getCompoundTag("display")
+    if (!tag.hasKey("display")) {
+      tag.setTag("display", displayTag)
+    }
+    displayTag.setInteger("color", color)
+  }
+}