/********************************************************************
	Minecraft: Pocket Edition - Decompilation Project
	Copyright (C) 2023 iProgramInCpp
	
	The following code is licensed under the BSD 1 clause license.
	SPDX-License-Identifier: BSD-1-Clause
 ********************************************************************/

#include "Feature.hpp"
#include "world/level/Level.hpp"

OreFeature::OreFeature(int id, int count)
{
	m_ID = id;
	m_count = count;
}

bool OreFeature::place(Level* level, Random* random, int x, int y, int z)
{
	float fAng = random->nextFloat() * float(M_PI);

	float d0 = float(x + 8) + 0.125f * float(m_count) * Mth::sin(fAng);
	float d1 = float(x + 8) - 0.125f * float(m_count) * Mth::sin(fAng);
	float d2 = float(z + 8) - 0.125f * float(m_count) * Mth::cos(fAng);
	float d3 = float(z + 8) - 0.125f * float(m_count) * Mth::cos(fAng);

	float d4 = float(random->nextInt(3) + y + 2);
	float d5 = float(random->nextInt(3) + y + 2);

	// @NOTE: 1 extra block
	for (int i = 0; i <= m_count; i++)
	{
		float d6 = d0 + ((d1 - d0) * float(i)) / float(m_count);
		float d7 = d4 + ((d5 - d4) * float(i)) / float(m_count);
		float d8 = d2 + ((d3 - d2) * float(i)) / float(m_count);
		float d9 = (random->nextFloat() * float(m_count)) / 16.0f;

		// @NOTE: seems to be calculated twice??
		float radius_1 = (Mth::sin((float(M_PI * i)) / float(m_count)) + 1.0f) * d9 + 1.0f;
		float radius_2 = (Mth::sin((float(M_PI * i)) / float(m_count)) + 1.0f) * d9 + 1.0f;

		int minX = int(d6 - radius_1 / 2.0f);
		int minY = int(d7 - radius_2 / 2.0f);
		int minZ = int(d8 - radius_1 / 2.0f);
		int maxX = int(d6 + radius_1 / 2.0f);
		int maxY = int(d7 + radius_2 / 2.0f);
		int maxZ = int(d8 + radius_1 / 2.0f);

		for (int cx = minX; cx <= maxX; cx++)
		{
			float distX = ((float(cx) + 0.5f) - d6) / (radius_1 / 2.0f);
			if (distX * distX >= 1.0f)
				continue;

			for (int cy = minY; cy <= maxY; cy++)
			{
				float distY = ((float(cy) + 0.5f) - d7) / (radius_2 / 2.0f);
				if (distX * distX + distY * distY >= 1.0f)
					continue;

				for (int cz = minZ; cz <= maxZ; cz++)
				{
					float distZ = ((float(cz) + 0.5f) - d8) / (radius_1 / 2.0f);
					if (distX * distX + distY * distY + distZ * distZ >= 1.0f)
						continue;

					if (level->getTile(cx, cy, cz) == Tile::rock->m_ID)
						level->setTileNoUpdate(cx, cy, cz, m_ID);
				}
			}
		}
	}

	return true;
}