package codechicken.microblock

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

/**
 * Standard micro material class suitable for most blocks.
 */
class BlockMicroMaterial(val block:Block, val meta:Int = 0) extends IMicroMaterial
{
    @SideOnly(Side.CLIENT)
    var icont:MultiIconTransformation = _
    
    @SideOnly(Side.CLIENT)
    override def loadIcons()
    {
        var iblock = Block.blocksList(block.blockID)//Reacquire the block instance incase a mod replaced it.
        val icons = new Array[Icon](6)
        
        if(iblock == null)
            for(i <- 0 until 6)
                icons(i) = MicroblockProxy.renderBlocks.getIconSafe(null)
        else
            for(i <- 0 until 6)
                icons(i) = MicroblockProxy.renderBlocks.getIconSafe(iblock.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:IMicroMaterialRender)
    {
        renderMicroFace(verts, side, pos, lightMatrix, getColour(part), 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(part:IMicroMaterialRender) = 
        if(part.world == null) 
            block.getBlockColor<<8|0xFF
        else 
            block.colorMultiplier(part.world, part.x, part.y, part.z)<<8|0xFF
    
    @SideOnly(Side.CLIENT)
    def getBreakingIcon(side:Int) = block.getIcon(side, meta)
    
    def getItem = new ItemStack(block, 1, meta)
    
    def getLocalizedName = getItem.getDisplayName
    
    def getStrength(player:EntityPlayer) = player.getCurrentPlayerStrVsBlock(block, false, meta)/block.blockHardness
    
    def isTransparent = !block.isOpaqueCube
    
    def getLightValue = Block.lightValue(block.blockID)
    
    def toolClasses = Seq("axe", "pickaxe", "shovel")
    
    def getCutterStrength = toolClasses.foldLeft(0)((level, tool) => Math.max(level, MinecraftForge.getBlockHarvestLevel(block, meta, tool)))
    
    def getSound = block.stepSound
}

/**
 * Utility functions for cleaner registry code
 */
object BlockMicroMaterial
{
    def createAndRegister(block:Block)
    {
        createAndRegister(block, 0)
    }
    
    def createAndRegister(block:Block, meta:Int)
    {
        MicroMaterialRegistry.registerMaterial(new BlockMicroMaterial(block, meta), 
                block.getUnlocalizedName+(if(meta > 0) "_"+meta else ""))
    }
    
    def createAndRegister(block:Block, meta:Seq[Int])
    {
        meta.foreach(m => createAndRegister(block, m))
    }
}