src/main/scala/li/cil/oc/client/gui/Robot.scala

package li.cil.oc.client.gui

import java.util
import li.cil.oc.client.renderer.gui.BufferRenderer
import li.cil.oc.client.renderer.MonospaceFontRenderer
import li.cil.oc.client.{PacketSender => ClientPacketSender, Textures}
import li.cil.oc.common.container
import li.cil.oc.common.container.ComponentSlot
import li.cil.oc.common.tileentity
import li.cil.oc.Settings
import li.cil.oc.util.RenderState
import net.minecraft.client.gui.GuiButton
import net.minecraft.client.gui.inventory.GuiContainer
import net.minecraft.client.Minecraft
import net.minecraft.client.renderer.Tessellator
import net.minecraft.client.renderer.texture.TextureMap
import net.minecraft.entity.player.InventoryPlayer
import net.minecraft.inventory.Slot
import net.minecraft.util.StatCollector
import org.lwjgl.input.Keyboard
import org.lwjgl.opengl.GL11

class Robot(playerInventory: InventoryPlayer, val robot: tileentity.Robot) extends GuiContainer(new container.Robot(playerInventory, robot)) with Buffer {
  xSize = 256
  ySize = 242

  protected var powerButton: ImageButton = _

  protected val buffer = robot.buffer

  private val bufferWidth = 242.0
  private val bufferHeight = 128.0
  private val bufferMargin = BufferRenderer.innerMargin

  private val inventoryX = 176
  private val inventoryY = 140

  private val powerX = 28
  private val powerY = 142

  private val powerWidth = 140
  private val powerHeight = 12

  private val selectionSize = 20
  private val selectionsStates = 17
  private val selectionStepV = 1 / selectionsStates.toDouble

  def add[T](list: util.List[T], value: Any) = list.add(value.asInstanceOf[T])

  protected override def actionPerformed(button: GuiButton) {
    if (button.id == 0) {
      ClientPacketSender.sendComputerPower(robot, !robot.isRunning)
    }
  }

  override def drawScreen(mouseX: Int, mouseY: Int, dt: Float) {
    powerButton.toggled = robot.isRunning
    super.drawScreen(mouseX, mouseY, dt)
  }

  override def initGui() {
    super.initGui()
    powerButton = new ImageButton(0, guiLeft + 7, guiTop + 139, 18, 18, Textures.guiButtonPower, canToggle = true)
    add(buttonList, powerButton)
  }

  override def drawBuffer() {
    GL11.glTranslatef(8, 8, 0)
    RenderState.disableLighting()
    RenderState.makeItBlend()
    val (w, h) = buffer.resolution
    val scaleX = 48f / w
    val scaleY = 14f / h
    val scale = math.min(scaleX, scaleY)
    if (scaleX > scale) {
      GL11.glTranslated(MonospaceFontRenderer.fontWidth * w * (scaleX - scale) / 2, 0, 0)
    }
    else if (scaleY > scale) {
      GL11.glTranslated(0, MonospaceFontRenderer.fontHeight * h * (scaleY - scale) / 2, 0)
    }
    GL11.glScalef(scale, scale, scale)
    BufferRenderer.drawText()
  }

  protected override def drawGuiContainerForegroundLayer(mouseX: Int, mouseY: Int) {
    drawBufferLayer()
    GL11.glPushAttrib(0xFFFFFFFF) // Me lazy... prevents NEI render glitch.
    if (isPointInRegion(powerX, powerY, powerWidth, powerHeight, mouseX, mouseY)) {
      val tooltip = new java.util.ArrayList[String]
      val format = StatCollector.translateToLocal(Settings.namespace + "gui.Robot.Power") + ": %d%% (%d/%d)"
      tooltip.add(format.format(
        ((robot.globalBuffer / robot.globalBufferSize) * 100).toInt,
        robot.globalBuffer.toInt,
        robot.globalBufferSize.toInt))
      drawHoveringText(tooltip, mouseX - guiLeft, mouseY - guiTop, fontRendererObj)
    }
    if (powerButton.func_146115_a) {
      val tooltip = new java.util.ArrayList[String]
      val which = if (robot.isRunning) "gui.Robot.TurnOff" else "gui.Robot.TurnOn"
      tooltip.add(StatCollector.translateToLocal(Settings.namespace + which))
      drawHoveringText(tooltip, mouseX - guiLeft, mouseY - guiTop, fontRendererObj)
    }
    GL11.glPopAttrib()
  }

  override def drawGuiContainerBackgroundLayer(dt: Float, mouseX: Int, mouseY: Int) {
    GL11.glColor3f(1, 1, 1) // Required under Linux.
    mc.renderEngine.bindTexture(Textures.guiRobot)
    drawTexturedModalRect(guiLeft, guiTop, 0, 0, xSize, ySize)
    drawPowerLevel()
    drawSelection()

    GL11.glPushMatrix()
    GL11.glTranslatef(guiLeft, guiTop, 0)
    for (i1 <- 0 until inventorySlots.inventorySlots.size()) {
      drawSlotInventory(inventorySlots.inventorySlots.get(i1).asInstanceOf[Slot])
    }
    GL11.glPopMatrix()

    RenderState.makeItBlend()
  }

  def drawSlotInventory(slot: Slot) {
    if (!slot.getHasStack) slot match {
      case component: ComponentSlot if component.tierIcon != null =>
        mc.getTextureManager.bindTexture(TextureMap.locationItemsTexture)
        GL11.glDisable(GL11.GL_DEPTH_TEST)
        drawTexturedModelRectFromIcon(slot.xDisplayPosition, slot.yDisplayPosition, component.tierIcon, 16, 16)
        GL11.glEnable(GL11.GL_DEPTH_TEST)
      case _ =>
    }
  }

  protected override def drawGradientRect(par1: Int, par2: Int, par3: Int, par4: Int, par5: Int, par6: Int) {
    super.drawGradientRect(par1, par2, par3, par4, par5, par6)
    RenderState.makeItBlend()
  }

  protected override def keyTyped(char: Char, code: Int) {
    if (code == Keyboard.KEY_ESCAPE) {
      super.keyTyped(char, code)
    }
  }

  override protected def changeSize(w: Double, h: Double) = {
    val bw = w * MonospaceFontRenderer.fontWidth
    val bh = h * MonospaceFontRenderer.fontHeight
    val scaleX = math.min(bufferWidth / (bw + bufferMargin * 2.0), 1)
    val scaleY = math.min(bufferHeight / (bh + bufferMargin * 2.0), 1)
    math.min(scaleX, scaleY)
  }

  private def drawSelection() {
    RenderState.makeItBlend()
    Minecraft.getMinecraft.renderEngine.bindTexture(Textures.guiRobotSelection)
    val now = System.currentTimeMillis() / 1000.0
    val offsetV = ((now - now.toInt) * selectionsStates).toInt * selectionStepV
    val slot = robot.selectedSlot - robot.actualSlot(0)
    val x = guiLeft + inventoryX + (slot % 4) * (selectionSize - 2)
    val y = guiTop + inventoryY + (slot / 4) * (selectionSize - 2)

    val t = Tessellator.instance
    t.startDrawingQuads()
    t.addVertexWithUV(x, y, zLevel, 0, offsetV)
    t.addVertexWithUV(x, y + selectionSize, zLevel, 0, offsetV + selectionStepV)
    t.addVertexWithUV(x + selectionSize, y + selectionSize, zLevel, 1, offsetV + selectionStepV)
    t.addVertexWithUV(x + selectionSize, y, zLevel, 1, offsetV)
    t.draw()
  }

  private def drawPowerLevel() {
    val level = robot.globalBuffer / robot.globalBufferSize

    val u0 = 0
    val u1 = powerWidth / 256.0 * level
    val v0 = 1 - powerHeight / 256.0
    val v1 = 1
    val x = guiLeft + powerX
    val y = guiTop + powerY
    val w = powerWidth * level

    val t = Tessellator.instance
    t.startDrawingQuads()
    t.addVertexWithUV(x, y, zLevel, u0, v0)
    t.addVertexWithUV(x, y + powerHeight, zLevel, u0, v1)
    t.addVertexWithUV(x + w, y + powerHeight, zLevel, u1, v1)
    t.addVertexWithUV(x + w, y, zLevel, u1, v0)
    t.draw()
  }

  private def isPointInRegion(rx: Int, ry: Int, w: Int, h: Int, x: Int, y: Int) = {
    val px = x - guiLeft
    val py = y - guiTop
    px >= rx - 1 && px < rx + w + 1 && py >= ry - 1 && py < ry + h + 1
  }
}