package codechicken.microblock

import net.minecraft.block.Block
import codechicken.microblock.MicroMaterialRegistry.IMicroMaterial
import net.minecraft.util.Icon
import codechicken.core.vec.Cuboid6
import codechicken.core.lighting.LC;
import codechicken.core.lighting.LightMatrix;
import cpw.mods.fml.relauncher.SideOnly
import cpw.mods.fml.relauncher.Side
import codechicken.core.render.MultiIconTransformation
import codechicken.core.render.IUVTransformation
import codechicken.microblock.MicroblockClassRegistry._
import net.minecraft.item.Item
import net.minecraft.item.ItemStack
import codechicken.core.vec.Vector3
import net.minecraft.entity.player.EntityPlayer
import codechicken.core.render.Vertex5
import codechicken.core.render.UV
import net.minecraft.client.renderer.Tessellator
import codechicken.core.render.CCRenderState
import codechicken.core.vec.Rotation
import net.minecraft.tileentity.TileEntity

class BlockMicroMaterial(val block:Block, val meta:Int = 0) extends IMicroMaterial
{
    @SideOnly(Side.CLIENT)
    var icont:MultiIconTransformation = _
    
    @SideOnly(Side.CLIENT)
    override def loadIcons()
    {
        val icons = new Array[Icon](6)
        for(i <- 0 until 6)
            icons(i) = block.getIcon(i, meta)
        icont = new MultiIconTransformation(icons)
    }
    
    def getRenderPass = if(block.canRenderInPass(1)) 1 else 0
    
    def renderMicroFace(verts:Array[Vertex5], side:Int, pos:Vector3, lightMatrix:LightMatrix, part:Microblock)
    {
        renderMicroFace(verts, side, pos, lightMatrix, getColour(part.tile), icont)
    }
    
    def renderMicroFace(verts:Array[Vertex5], side:Int, pos:Vector3, lightMatrix:LightMatrix, colour:Int, uvt:IUVTransformation)
    {
        val uv = new UV
        val t = Tessellator.instance
        var i = 0
        while(i < 4)
        {
            if(CCRenderState.useNormals)
            {
                val n = Rotation.axes(side%6)
                t.setNormal(n.x.toFloat, n.y.toFloat, n.z.toFloat)
            }
            val vert = verts(i)
            if(lightMatrix != null)
            {
                val lc = LC.computeO(vert.vec, side)
                if(CCRenderState.useModelColours)
                    lightMatrix.setColour(t, lc, colour)
                lightMatrix.setBrightness(t, lc)
            }
            else 
            {
                if(CCRenderState.useModelColours)
                    CCRenderState.vertexColour(colour)
            }
            uvt.transform(uv.set(vert.uv))
            t.addVertexWithUV(vert.vec.x+pos.x, vert.vec.y+pos.y, vert.vec.z+pos.z, uv.u, uv.v)
            i+=1
        }
    }
    
    def getColour(tile:TileEntity) = 
        if(tile == null) 
            block.getBlockColor<<8|0xFF
        else 
            block.colorMultiplier(tile.worldObj, tile.xCoord, tile.yCoord, tile.zCoord)<<8|0xFF
    
    @SideOnly(Side.CLIENT)
    def getBreakingIcon(side:Int) = block.getIcon(side, meta)
    
    def getItem = Item.itemsList(block.blockID)
    
    def getLocalizedName = getItem.getItemDisplayName(new ItemStack(getItem, 1, meta))
    
    def getStrength(player:EntityPlayer) = player.getCurrentPlayerStrVsBlock(block, false, meta)/block.blockHardness
    
    def isTransparent = !block.isOpaqueCube
}

object BlockMicroMaterial
{
    def createAndRegister(block:Block)
    {
        MicroMaterialRegistry.registerMaterial(new BlockMicroMaterial(block), block.getUnlocalizedName)
    }
    
    def createAndRegister(block:Block, meta:Seq[Int])
    {
        val name = block.getUnlocalizedName
        meta.foreach(m => MicroMaterialRegistry.registerMaterial(new BlockMicroMaterial(block, m), name+(if(m > 0) "_"+m else "")))
    }
}