コード例 #1
0
ファイル: mapgen_fractal.cpp プロジェクト: voronaam/freeminer
s16 MapgenFractal::generateTerrain()
{
	MapNode n_air(CONTENT_AIR);
	MapNode n_stone(c_stone);
	MapNode n_water(c_water_source);

	s16 stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT;
	u32 index2d = 0;

	for (s16 z = node_min.Z; z <= node_max.Z; z++) {
		for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
			u32 vi = vm->m_area.index(node_min.X, y, z);
			for (s16 x = node_min.X; x <= node_max.X; x++, vi++, index2d++) {
				if (vm->m_data[vi].getContent() == CONTENT_IGNORE) {
					s16 seabed_height = noise_seabed->result[index2d];

					if (y <= seabed_height || getFractalAtPoint(x, y, z)) {
						vm->m_data[vi] = n_stone;
						if (y > stone_surface_max_y)
							stone_surface_max_y = y;
					} else if (y <= water_level) {
						vm->m_data[vi] = n_water;
					} else {
						vm->m_data[vi] = n_air;
					}
				}
			}
			index2d -= ystride;
		}
		index2d += ystride;
	}

	return stone_surface_max_y;
}
コード例 #2
0
ファイル: mapgen_fractal.cpp プロジェクト: ridixcr/minetest
int MapgenFractal::getGroundLevelAtPoint(v2s16 p)
{
	s16 search_start = 128;
	s16 search_end = -128;

	for (s16 y = search_start; y >= search_end; y--) {
		if (getFractalAtPoint(p.X, y, p.Y))
			return y;
	}

	return -MAX_MAP_GENERATION_LIMIT;
}
コード例 #3
0
ファイル: mapgen_fractal.cpp プロジェクト: voronaam/freeminer
int MapgenFractal::getSpawnLevelAtPoint(v2s16 p)
{
	bool solid_below = false;  // Dry solid node is present below to spawn on
	u8 air_count = 0;  // Consecutive air nodes above the dry solid node
	s16 seabed_level = NoisePerlin2D(&noise_seabed->np, p.X, p.Y, seed);
	// Seabed can rise above water_level or might be raised to create dry land
	s16 search_start = MYMAX(seabed_level, water_level + 1);
	if (seabed_level > water_level)
		solid_below = true;
		
	for (s16 y = search_start; y <= search_start + 128; y++) {
		if (getFractalAtPoint(p.X, y, p.Y)) {  // Fractal node
			solid_below = true;
			air_count = 0;
		} else if (solid_below) {  // Air above solid node
			air_count++;
			if (air_count == 2)
				return y - 2;
		}
	}

	return MAX_MAP_GENERATION_LIMIT;  // Unsuitable spawn point
}