#include "Block.h"
#include "Inventory.h"
#include "NoBlock.h"
#include "Game.h"
#include "ItemEntity.h"
#include "AddEntityUpdate.h"


Block::Block(const BlockType* zType, ItemType* zTool, Framework::Vec3<int> pos, bool hasInventory)
	: Inventory(pos, hasInventory)
{
	transparent = false;
	passable = false;
	hp = 1;
	maxHP = 1;
	hardness = 1;
	this->zType = zType;
	this->zTool = zTool;
	speedModifier = 1;
	ticksLeftCounter = 0;
	wasTicked = 0;
	onTickCalled = 0;
	minTickTimeout = -1;
	maxTickTimeout = -1;
	tickSource = 0;
	currentTickTimeout = 0;
	dimensionId = 0;
	interactable = 0;
	deadAndRemoved = 0;
	memset(zNeighbours, 0, sizeof(Block*) * 6);
	memset(lightEmisionColor, 0, 3);
}

Block::~Block()
{}

void Block::onDestroy()
{
	if (!deadAndRemoved)
	{
		Item* blockItem = zType->getItemFromBlock(this);
		if (blockItem)
		{
			ItemEntity* itemEntity = (ItemEntity*)ItemEntityType::INSTANCE->createEntity(location + Framework::Vec3<float>(0.5f, 0.5f, 0.5f), dimensionId, Game::INSTANCE->getNextEntityId());
			ItemStack* stack = new ItemStack(blockItem, 1, blockItem->getMaxStackSize());
			itemEntity->unsaveAddItem(stack, NO_DIRECTION);
			stack->release();
			Game::INSTANCE->requestWorldUpdate(new AddEntityUpdate(itemEntity, dimensionId));
			deadAndRemoved = 1;
		}
	}
}

void Block::tick(TickQueue* zQueue)
{
	if (wasTicked)
		return;
	wasTicked = 1;
	ticksLeftCounter++;
	if (minTickTimeout >= 0)
	{
		if (currentTickTimeout < ticksLeftCounter)
		{
			onTickCalled = 1;
			bool blocked = 0;
			bool result = onTick(zQueue, ticksLeftCounter, blocked);
			if (blocked)
			{
				wasTicked = 0;
				ticksLeftCounter--;
				onTickCalled = 0;
				return;
			}
			if (result)
				currentTickTimeout = MAX(MIN(currentTickTimeout - 1, maxTickTimeout), MAX(minTickTimeout, 0));
			else
				currentTickTimeout = MAX(MIN(currentTickTimeout + 1, maxTickTimeout), MAX(minTickTimeout, 0));
			ticksLeftCounter = 0;
		}
	}
}

void Block::postTick()
{
	wasTicked = 0;
	if (onTickCalled)
	{
		onPostTick();
		onTickCalled = 0;
	}
}

void Block::setNeighbour(Direction dir, Framework::Either<Block*, int> neighbour)
{
	if (neighbour.isA())
		setNeighbourBlock(dir, neighbour);
	else
	{
		setNeighbourBlock(dir, 0);
		setNeighbourType(dir, neighbour);
	}
}

void Block::setNeighbourBlock(Direction dir, Block* zN)
{
	if (zN)
		setNeighbourType(dir, zN->zBlockType()->getId());
	zNeighbours[getDirectionIndex(dir)] = zN;
}

void Block::setNeighbourType(Direction dir, int type)
{
	neighbourTypes[getDirectionIndex(dir)] = type;
}

void Block::setDimensionId(int id)
{
	dimensionId = id;
}

void api(Framework::StreamReader* zRequest, NetworkMessage* zResponse)
{
	// TODO: answer api requests
}

bool Block::isTickSource() const
{
	return tickSource;
}

const BlockType* Block::zBlockType() const
{
	return zType;
}

bool Block::isTransparent() const
{
	return transparent;
}

bool Block::isPassable() const
{
	return passable;
}

bool Block::isInteractable() const
{
	return interactable;
}

float Block::getHP() const
{
	return hp;
}

float Block::getMaxHP() const
{
	return maxHP;
}

float Block::getHardness() const
{
	return hardness;
}

ItemType* Block::zEffectiveTool() const
{
	return zTool;
}

float Block::getSpeedModifier() const
{
	return speedModifier;
}

const Framework::Vec3<int> Block::getPos() const
{
	return (Framework::Vec3<int>)location;
}

int Block::getDimensionId() const
{
	return dimensionId;
}

bool Block::isVisible() const
{
	if (passable || transparent)
		return 1;
	for (int i = 0; i < 6; i++)
	{
		const Block* neighbour = CONST_BLOCK(zNeighbours[i], neighbourTypes[i]);
		if (neighbour->isPassable() || neighbour->isTransparent())
			return 1;
	}
	return 0;
}

void Block::setHP(float hp)
{
	bool isDead = this->hp == 0.f;
	this->hp = MAX(0.f, hp);
	if (!isDead && this->hp == 0.f)
	{
		for (int i = 0; i < 6; i++)
		{
			if (neighbourTypes[i] == NoBlockBlockType::ID)
			{
				Framework::Vec3<int> pos = getPos() + getDirection(getDirectionFromIndex(i));
				Game::INSTANCE->zDimension(dimensionId)->placeBlock(pos, Game::INSTANCE->zGenerator()->generateSingleBlock(pos, dimensionId));
			}
		}
		onDestroy();
		Game::INSTANCE->zDimension(dimensionId)->placeBlock(getPos(), AirBlockBlockType::ID);
	}
	else
	{
		NetworkMessage* changeMsg = new NetworkMessage();
		changeMsg->addressBlock(this);
		char* msg = new char[5];
		msg[0] = 0; // hp changed
		*(float*)(msg + 1) = this->hp;
		changeMsg->setMessage(msg, 5);
		Game::INSTANCE->broadcastMessage(changeMsg);
	}
}

bool Block::isDeadAndRemoved() const
{
	return deadAndRemoved;
}

const unsigned char* Block::getLightEmisionColor() const
{
	return lightEmisionColor;
}

void Block::filterPassingLight(unsigned char rgb[3]) const
{
	if (!transparent) // let no light pass intransparent blocks
		memset(rgb, 0, 3);
}


BasicBlockItem::BasicBlockItem(const ItemType* zType, const BlockType* zPlacedBlockType, const char* name)
	: Item(zType, name)
{
	placeable = 1;
	zBlockType = zPlacedBlockType;
}

bool BasicBlockItem::canBeStackedWith(const Item* zItem) const
{
	const BasicBlockItem* item = dynamic_cast<const BasicBlockItem*>(zItem);
	if (item)
	{
		return Item::canBeStackedWith(zItem) &&
			transparent == item->transparent &&
			passable == item->passable &&
			hardness == item->hardness &&
			toolId == item->toolId &&
			speedModifier == item->speedModifier && interactable == item->interactable;
	}
	return 0;
}


BasicBlockItemType::BasicBlockItemType(int id, const char* name, ItemSkillLevelUpRule* levelUpRule, const ItemType* zBrokenType, ModelInfo model)
	: ItemType(id, name, levelUpRule, zBrokenType, model)
{}

void BasicBlockItemType::loadSuperItem(Item* zItem, Framework::StreamReader* zReader) const
{
	ItemType::loadSuperItem(zItem, zReader);
	BasicBlockItem* item = dynamic_cast<BasicBlockItem*>(zItem);
	if (!item)
		throw "BasicBlockItemType::loadSuperItem was called with an invalid item";
	zReader->lese((char*)&item->transparent, 1);
	zReader->lese((char*)&item->passable, 1);
	zReader->lese((char*)&item->hardness, 4);
	zReader->lese((char*)&item->toolId, 4);
	zReader->lese((char*)&item->speedModifier, 4);
	zReader->lese((char*)&item->interactable, 1);
}

void BasicBlockItemType::saveSuperItem(const Item* zItem, Framework::StreamWriter* zWriter) const
{
	ItemType::saveSuperItem(zItem, zWriter);
	const BasicBlockItem* item = dynamic_cast<const BasicBlockItem*>(zItem);
	if (!item)
		throw "BasicBlockItemType::saveSuperItem was called with an invalid item";
	zWriter->schreibe((char*)&item->transparent, 1);
	zWriter->schreibe((char*)&item->passable, 1);
	zWriter->schreibe((char*)&item->hardness, 4);
	zWriter->schreibe((char*)&item->toolId, 4);
	zWriter->schreibe((char*)&item->speedModifier, 4);
	zWriter->schreibe((char*)&item->interactable, 1);
}

void BasicBlockItemType::initializeItem(BasicBlockItem* zItem, bool transparent, bool passable, float hardness, int toolId, float speedModifier) const
{
	zItem->transparent = transparent;
	zItem->passable = passable;
	zItem->hardness = hardness;
	zItem->toolId = toolId;
	zItem->speedModifier = speedModifier;
}