#include "stdafx.h"
#include "TileEntityRenderDispatcher.h"
#include "TileEntityRenderer.h"
#include "..\Minecraft.World\net.minecraft.world.level.tile.entity.h"
#include "..\Minecraft.World\net.minecraft.world.entity.player.h"
#include "..\Minecraft.World\net.minecraft.world.level.h"
#include "..\Minecraft.World\PistonPieceEntity.h"
#include "SignRenderer.h"
#include "MobSpawnerRenderer.h"
#include "PistonPieceRenderer.h"
#include "ChestRenderer.h"
#include "EnchantTableRenderer.h"
#include "TheEndPortalRenderer.h"
#include "SkullTileRenderer.h"
#include "EnderChestRenderer.h"

TileEntityRenderDispatcher *TileEntityRenderDispatcher::instance = NULL;
double TileEntityRenderDispatcher::xOff = 0;
double TileEntityRenderDispatcher::yOff = 0;
double TileEntityRenderDispatcher::zOff = 0;

void TileEntityRenderDispatcher::staticCtor()
{
	instance = new TileEntityRenderDispatcher();
}

TileEntityRenderDispatcher::TileEntityRenderDispatcher()
{
	// 4J -a dded
	font = NULL;
    textures = NULL;
    level = NULL;
    cameraEntity = nullptr;
    playerRotY = 0.0f;
    playerRotX = 0.0f;;
    xPlayer = yPlayer = zPlayer = 0;

	glEnable(GL_LIGHTING);
	renderers[eTYPE_SIGNTILEENTITY] = new SignRenderer();
	renderers[eTYPE_MOBSPAWNERTILEENTITY] = new MobSpawnerRenderer();
	renderers[eTYPE_PISTONPIECEENTITY] = new PistonPieceRenderer();
	renderers[eTYPE_CHESTTILEENTITY] = new ChestRenderer();
	renderers[eTYPE_ENDERCHESTTILEENTITY] = new EnderChestRenderer();
	renderers[eTYPE_ENCHANTMENTTABLEENTITY] = new EnchantTableRenderer();
	renderers[eTYPE_THEENDPORTALTILEENTITY] = new TheEndPortalRenderer();
	renderers[eTYPE_SKULLTILEENTITY] = new SkullTileRenderer();
	renderers[eTYPE_FURNACETILEENTITY] = NULL;
	glDisable(GL_LIGHTING);

	AUTO_VAR(itEnd, renderers.end());
	for( classToTileRendererMap::iterator it = renderers.begin(); it != itEnd; it++ )
	{
		if(it->second) it->second->init(this);
    }
}

TileEntityRenderer *TileEntityRenderDispatcher::getRenderer(eINSTANCEOF e)
{
	TileEntityRenderer *r = NULL;
    //TileEntityRenderer *r = renderers[e];
	AUTO_VAR(it, renderers.find( e )); // 4J Stu - The .at and [] accessors insert elements if they don't exist

	if( it == renderers.end() )
	{
		return NULL;
	}

/* 4J - not doing this hierarchical search anymore. We need to explicitly add renderers for any eINSTANCEOF type that we want to be able to render
    if (it == renderers.end() && e != TileEntity::_class)
	{
        r = getRenderer(dynamic_cast<TileEntity::Class *>( e->getSuperclass() ));
		// 4J - added condition here to only add if a valid renderer found
		if( r ) renderers.insert( classToTileRendererMap::value_type( e, r ) );
		//assert(false);
    }
	else if(it != renderers.end() && e != TileEntity::_class)
		r = (*it).second;
		*/

	return it->second;
}

bool TileEntityRenderDispatcher::hasRenderer(shared_ptr<TileEntity> e)
{
	return getRenderer(e) != NULL;
}

TileEntityRenderer *TileEntityRenderDispatcher::getRenderer(shared_ptr<TileEntity> e)
{
    if (e == NULL) return NULL;
    return getRenderer(e->GetType());
}

void TileEntityRenderDispatcher::prepare(Level *level, Textures *textures, Font *font, shared_ptr<Mob> player, float a)
{
	if( this->level != level )
	{
		setLevel( level );
	}
    this->textures = textures;
    this->cameraEntity = player;
    this->font = font;

    playerRotY = player->yRotO + (player->yRot - player->yRotO) * a;
    playerRotX = player->xRotO + (player->xRot - player->xRotO) * a;

    xPlayer = player->xOld + (player->x - player->xOld) * a;
    yPlayer = player->yOld + (player->y - player->yOld) * a;
    zPlayer = player->zOld + (player->z - player->zOld) * a;
}

void TileEntityRenderDispatcher::render(shared_ptr<TileEntity> e, float a, bool setColor/*=true*/)
{
    if (e->distanceToSqr(xPlayer, yPlayer, zPlayer) < 64 * 64)
	{
		// 4J - changes brought forward from 1.8.2
        if (SharedConstants::TEXTURE_LIGHTING)
		{
            int col = level->getLightColor(e->x, e->y, e->z, 0);
            int u = col % 65536;
            int v = col / 65536;
            glMultiTexCoord2f(GL_TEXTURE1, u / 1.0f, v / 1.0f);
            glColor4f(1, 1, 1, 1);
        }
		else
		{
            float br = level->getBrightness(e->x, e->y, e->z);
            glColor4f(br, br, br, 1);
        }
        render(e, e->x - xOff, e->y - yOff, e->z - zOff, a, setColor);
    }
}

void TileEntityRenderDispatcher::render(shared_ptr<TileEntity> entity, double x, double y, double z, float a, bool setColor/*=true*/, float alpha, bool useCompiled)
{
    TileEntityRenderer *renderer = getRenderer(entity);
    if (renderer != NULL)
	{
        renderer->render(entity, x, y, z, a, setColor, alpha, useCompiled);
    }
}

void TileEntityRenderDispatcher::setLevel(Level *level)
{
	this->level = level;

	for( AUTO_VAR(it, renderers.begin()); it != renderers.end(); it++ )
	{
		if(it->second) it->second->onNewLevel(level);
	}
}

double TileEntityRenderDispatcher::distanceToSqr(double x, double y, double z)
{
    double xd = x - xPlayer;
    double yd = y - yPlayer;
    double zd = z - zPlayer;
    return xd * xd + yd * yd + zd * zd;
}

Font *TileEntityRenderDispatcher::getFont()
{
	return font;
}