forked from Mirrorlandia_minetest/minetest
1d04903c19
4dir is like facedir, but only for 4 horizontal directions: NESW. It is identical in behavior to facedir otherwise. The reason why game makers would want to use this over facedir is 1) simplicity and 2) you get 6 free bits. It can be used for things like chests and furnaces and you don't need or want them to "flip them on the side" (like you could with facedir). color4dir is like colorfacedir, but you get 64 colors instead of only 8.
1638 lines
48 KiB
C++
1638 lines
48 KiB
C++
/*
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Minetest
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Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <cmath>
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#include "content_mapblock.h"
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#include "util/numeric.h"
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#include "util/directiontables.h"
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#include "mapblock_mesh.h"
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#include "settings.h"
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#include "nodedef.h"
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#include "client/tile.h"
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#include "mesh.h"
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#include <IMeshManipulator.h>
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#include "client/meshgen/collector.h"
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#include "client/renderingengine.h"
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#include "client.h"
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#include "noise.h"
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// Distance of light extrapolation (for oversized nodes)
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// After this distance, it gives up and considers light level constant
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#define SMOOTH_LIGHTING_OVERSIZE 1.0
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// Node edge count (for glasslike-framed)
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#define FRAMED_EDGE_COUNT 12
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// Node neighbor count, including edge-connected, but not vertex-connected
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// (for glasslike-framed)
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// Corresponding offsets are listed in g_27dirs
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#define FRAMED_NEIGHBOR_COUNT 18
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static const v3s16 light_dirs[8] = {
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v3s16(-1, -1, -1),
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v3s16(-1, -1, 1),
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v3s16(-1, 1, -1),
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v3s16(-1, 1, 1),
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v3s16( 1, -1, -1),
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v3s16( 1, -1, 1),
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v3s16( 1, 1, -1),
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v3s16( 1, 1, 1),
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};
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// Standard index set to make a quad on 4 vertices
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static constexpr u16 quad_indices[] = {0, 1, 2, 2, 3, 0};
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const std::string MapblockMeshGenerator::raillike_groupname = "connect_to_raillike";
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MapblockMeshGenerator::MapblockMeshGenerator(MeshMakeData *input, MeshCollector *output,
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scene::IMeshManipulator *mm):
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data(input),
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collector(output),
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nodedef(data->m_client->ndef()),
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meshmanip(mm),
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blockpos_nodes(data->m_blockpos * MAP_BLOCKSIZE)
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{
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enable_mesh_cache = g_settings->getBool("enable_mesh_cache") &&
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!data->m_smooth_lighting; // Mesh cache is not supported with smooth lighting
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}
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void MapblockMeshGenerator::useTile(int index, u8 set_flags, u8 reset_flags, bool special)
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{
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if (special)
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getSpecialTile(index, &tile, p == data->m_crack_pos_relative);
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else
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getTile(index, &tile);
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if (!data->m_smooth_lighting)
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color = encode_light(light, f->light_source);
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for (auto &layer : tile.layers) {
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layer.material_flags |= set_flags;
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layer.material_flags &= ~reset_flags;
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}
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}
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// Returns a tile, ready for use, non-rotated.
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void MapblockMeshGenerator::getTile(int index, TileSpec *tile)
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{
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getNodeTileN(n, p, index, data, *tile);
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}
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// Returns a tile, ready for use, rotated according to the node facedir.
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void MapblockMeshGenerator::getTile(v3s16 direction, TileSpec *tile)
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{
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getNodeTile(n, p, direction, data, *tile);
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}
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// Returns a special tile, ready for use, non-rotated.
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void MapblockMeshGenerator::getSpecialTile(int index, TileSpec *tile, bool apply_crack)
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{
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*tile = f->special_tiles[index];
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TileLayer *top_layer = nullptr;
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for (auto &layernum : tile->layers) {
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TileLayer *layer = &layernum;
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if (layer->texture_id == 0)
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continue;
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top_layer = layer;
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if (!layer->has_color)
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n.getColor(*f, &layer->color);
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}
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if (apply_crack)
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top_layer->material_flags |= MATERIAL_FLAG_CRACK;
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}
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void MapblockMeshGenerator::drawQuad(v3f *coords, const v3s16 &normal,
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float vertical_tiling)
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{
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const v2f tcoords[4] = {v2f(0.0, 0.0), v2f(1.0, 0.0),
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v2f(1.0, vertical_tiling), v2f(0.0, vertical_tiling)};
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video::S3DVertex vertices[4];
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bool shade_face = !f->light_source && (normal != v3s16(0, 0, 0));
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v3f normal2(normal.X, normal.Y, normal.Z);
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for (int j = 0; j < 4; j++) {
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vertices[j].Pos = coords[j] + origin;
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vertices[j].Normal = normal2;
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if (data->m_smooth_lighting)
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vertices[j].Color = blendLightColor(coords[j]);
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else
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vertices[j].Color = color;
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if (shade_face)
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applyFacesShading(vertices[j].Color, normal2);
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vertices[j].TCoords = tcoords[j];
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}
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collector->append(tile, vertices, 4, quad_indices, 6);
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}
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// Create a cuboid.
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// tiles - the tiles (materials) to use (for all 6 faces)
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// tilecount - number of entries in tiles, 1<=tilecount<=6
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// lights - vertex light levels. The order is the same as in light_dirs.
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// NULL may be passed if smooth lighting is disabled.
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// txc - texture coordinates - this is a list of texture coordinates
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// for the opposite corners of each face - therefore, there
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// should be (2+2)*6=24 values in the list. The order of
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// the faces in the list is up-down-right-left-back-front
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// (compatible with ContentFeatures).
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// mask - a bit mask that suppresses drawing of tiles.
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// tile i will not be drawn if mask & (1 << i) is 1
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void MapblockMeshGenerator::drawCuboid(const aabb3f &box,
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TileSpec *tiles, int tilecount, const LightInfo *lights, const f32 *txc, u8 mask)
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{
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assert(tilecount >= 1 && tilecount <= 6); // pre-condition
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v3f min = box.MinEdge;
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v3f max = box.MaxEdge;
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video::SColor colors[6];
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if (!data->m_smooth_lighting) {
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for (int face = 0; face != 6; ++face) {
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colors[face] = encode_light(light, f->light_source);
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}
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if (!f->light_source) {
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applyFacesShading(colors[0], v3f(0, 1, 0));
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applyFacesShading(colors[1], v3f(0, -1, 0));
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applyFacesShading(colors[2], v3f(1, 0, 0));
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applyFacesShading(colors[3], v3f(-1, 0, 0));
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applyFacesShading(colors[4], v3f(0, 0, 1));
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applyFacesShading(colors[5], v3f(0, 0, -1));
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}
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}
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video::S3DVertex vertices[24] = {
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// top
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video::S3DVertex(min.X, max.Y, max.Z, 0, 1, 0, colors[0], txc[0], txc[1]),
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video::S3DVertex(max.X, max.Y, max.Z, 0, 1, 0, colors[0], txc[2], txc[1]),
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video::S3DVertex(max.X, max.Y, min.Z, 0, 1, 0, colors[0], txc[2], txc[3]),
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video::S3DVertex(min.X, max.Y, min.Z, 0, 1, 0, colors[0], txc[0], txc[3]),
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// bottom
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video::S3DVertex(min.X, min.Y, min.Z, 0, -1, 0, colors[1], txc[4], txc[5]),
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video::S3DVertex(max.X, min.Y, min.Z, 0, -1, 0, colors[1], txc[6], txc[5]),
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video::S3DVertex(max.X, min.Y, max.Z, 0, -1, 0, colors[1], txc[6], txc[7]),
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video::S3DVertex(min.X, min.Y, max.Z, 0, -1, 0, colors[1], txc[4], txc[7]),
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// right
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video::S3DVertex(max.X, max.Y, min.Z, 1, 0, 0, colors[2], txc[ 8], txc[9]),
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video::S3DVertex(max.X, max.Y, max.Z, 1, 0, 0, colors[2], txc[10], txc[9]),
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video::S3DVertex(max.X, min.Y, max.Z, 1, 0, 0, colors[2], txc[10], txc[11]),
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video::S3DVertex(max.X, min.Y, min.Z, 1, 0, 0, colors[2], txc[ 8], txc[11]),
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// left
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video::S3DVertex(min.X, max.Y, max.Z, -1, 0, 0, colors[3], txc[12], txc[13]),
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video::S3DVertex(min.X, max.Y, min.Z, -1, 0, 0, colors[3], txc[14], txc[13]),
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video::S3DVertex(min.X, min.Y, min.Z, -1, 0, 0, colors[3], txc[14], txc[15]),
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video::S3DVertex(min.X, min.Y, max.Z, -1, 0, 0, colors[3], txc[12], txc[15]),
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// back
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video::S3DVertex(max.X, max.Y, max.Z, 0, 0, 1, colors[4], txc[16], txc[17]),
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video::S3DVertex(min.X, max.Y, max.Z, 0, 0, 1, colors[4], txc[18], txc[17]),
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video::S3DVertex(min.X, min.Y, max.Z, 0, 0, 1, colors[4], txc[18], txc[19]),
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video::S3DVertex(max.X, min.Y, max.Z, 0, 0, 1, colors[4], txc[16], txc[19]),
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// front
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video::S3DVertex(min.X, max.Y, min.Z, 0, 0, -1, colors[5], txc[20], txc[21]),
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video::S3DVertex(max.X, max.Y, min.Z, 0, 0, -1, colors[5], txc[22], txc[21]),
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video::S3DVertex(max.X, min.Y, min.Z, 0, 0, -1, colors[5], txc[22], txc[23]),
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video::S3DVertex(min.X, min.Y, min.Z, 0, 0, -1, colors[5], txc[20], txc[23]),
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};
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static const u8 light_indices[24] = {
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3, 7, 6, 2,
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0, 4, 5, 1,
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6, 7, 5, 4,
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3, 2, 0, 1,
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7, 3, 1, 5,
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2, 6, 4, 0
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};
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for (int face = 0; face < 6; face++) {
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int tileindex = MYMIN(face, tilecount - 1);
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const TileSpec &tile = tiles[tileindex];
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for (int j = 0; j < 4; j++) {
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video::S3DVertex &vertex = vertices[face * 4 + j];
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v2f &tcoords = vertex.TCoords;
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switch (tile.rotation) {
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case 0:
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break;
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case 1: // R90
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tcoords.rotateBy(90, irr::core::vector2df(0, 0));
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break;
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case 2: // R180
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tcoords.rotateBy(180, irr::core::vector2df(0, 0));
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break;
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case 3: // R270
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tcoords.rotateBy(270, irr::core::vector2df(0, 0));
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break;
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case 4: // FXR90
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tcoords.X = 1.0 - tcoords.X;
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tcoords.rotateBy(90, irr::core::vector2df(0, 0));
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break;
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case 5: // FXR270
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tcoords.X = 1.0 - tcoords.X;
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tcoords.rotateBy(270, irr::core::vector2df(0, 0));
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break;
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case 6: // FYR90
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tcoords.Y = 1.0 - tcoords.Y;
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tcoords.rotateBy(90, irr::core::vector2df(0, 0));
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break;
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case 7: // FYR270
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tcoords.Y = 1.0 - tcoords.Y;
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tcoords.rotateBy(270, irr::core::vector2df(0, 0));
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break;
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case 8: // FX
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tcoords.X = 1.0 - tcoords.X;
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break;
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case 9: // FY
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tcoords.Y = 1.0 - tcoords.Y;
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break;
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default:
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break;
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}
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}
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}
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if (data->m_smooth_lighting) {
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for (int j = 0; j < 24; ++j) {
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video::S3DVertex &vertex = vertices[j];
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vertex.Color = encode_light(
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lights[light_indices[j]].getPair(MYMAX(0.0f, vertex.Normal.Y)),
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f->light_source);
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if (!f->light_source)
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applyFacesShading(vertex.Color, vertex.Normal);
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}
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}
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// Add to mesh collector
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for (int k = 0; k < 6; ++k) {
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if (mask & (1 << k))
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continue;
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int tileindex = MYMIN(k, tilecount - 1);
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collector->append(tiles[tileindex], vertices + 4 * k, 4, quad_indices, 6);
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}
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}
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// Gets the base lighting values for a node
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void MapblockMeshGenerator::getSmoothLightFrame()
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{
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for (int k = 0; k < 8; ++k)
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frame.sunlight[k] = false;
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for (int k = 0; k < 8; ++k) {
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LightPair light(getSmoothLightTransparent(blockpos_nodes + p, light_dirs[k], data));
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frame.lightsDay[k] = light.lightDay;
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frame.lightsNight[k] = light.lightNight;
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// If there is direct sunlight and no ambient occlusion at some corner,
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// mark the vertical edge (top and bottom corners) containing it.
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if (light.lightDay == 255) {
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frame.sunlight[k] = true;
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frame.sunlight[k ^ 2] = true;
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}
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}
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}
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// Calculates vertex light level
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// vertex_pos - vertex position in the node (coordinates are clamped to [0.0, 1.0] or so)
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LightInfo MapblockMeshGenerator::blendLight(const v3f &vertex_pos)
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{
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// Light levels at (logical) node corners are known. Here,
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// trilinear interpolation is used to calculate light level
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// at a given point in the node.
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f32 x = core::clamp(vertex_pos.X / BS + 0.5, 0.0 - SMOOTH_LIGHTING_OVERSIZE, 1.0 + SMOOTH_LIGHTING_OVERSIZE);
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f32 y = core::clamp(vertex_pos.Y / BS + 0.5, 0.0 - SMOOTH_LIGHTING_OVERSIZE, 1.0 + SMOOTH_LIGHTING_OVERSIZE);
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f32 z = core::clamp(vertex_pos.Z / BS + 0.5, 0.0 - SMOOTH_LIGHTING_OVERSIZE, 1.0 + SMOOTH_LIGHTING_OVERSIZE);
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f32 lightDay = 0.0; // daylight
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f32 lightNight = 0.0;
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f32 lightBoosted = 0.0; // daylight + direct sunlight, if any
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for (int k = 0; k < 8; ++k) {
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f32 dx = (k & 4) ? x : 1 - x;
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f32 dy = (k & 2) ? y : 1 - y;
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f32 dz = (k & 1) ? z : 1 - z;
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// Use direct sunlight (255), if any; use daylight otherwise.
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f32 light_boosted = frame.sunlight[k] ? 255 : frame.lightsDay[k];
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lightDay += dx * dy * dz * frame.lightsDay[k];
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lightNight += dx * dy * dz * frame.lightsNight[k];
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lightBoosted += dx * dy * dz * light_boosted;
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}
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return LightInfo{lightDay, lightNight, lightBoosted};
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}
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// Calculates vertex color to be used in mapblock mesh
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// vertex_pos - vertex position in the node (coordinates are clamped to [0.0, 1.0] or so)
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// tile_color - node's tile color
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video::SColor MapblockMeshGenerator::blendLightColor(const v3f &vertex_pos)
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{
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LightInfo light = blendLight(vertex_pos);
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return encode_light(light.getPair(), f->light_source);
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}
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video::SColor MapblockMeshGenerator::blendLightColor(const v3f &vertex_pos,
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const v3f &vertex_normal)
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{
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LightInfo light = blendLight(vertex_pos);
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video::SColor color = encode_light(light.getPair(MYMAX(0.0f, vertex_normal.Y)), f->light_source);
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if (!f->light_source)
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applyFacesShading(color, vertex_normal);
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return color;
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}
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void MapblockMeshGenerator::generateCuboidTextureCoords(const aabb3f &box, f32 *coords)
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{
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f32 tx1 = (box.MinEdge.X / BS) + 0.5;
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f32 ty1 = (box.MinEdge.Y / BS) + 0.5;
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f32 tz1 = (box.MinEdge.Z / BS) + 0.5;
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f32 tx2 = (box.MaxEdge.X / BS) + 0.5;
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f32 ty2 = (box.MaxEdge.Y / BS) + 0.5;
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f32 tz2 = (box.MaxEdge.Z / BS) + 0.5;
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f32 txc[24] = {
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tx1, 1 - tz2, tx2, 1 - tz1, // up
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tx1, tz1, tx2, tz2, // down
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tz1, 1 - ty2, tz2, 1 - ty1, // right
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1 - tz2, 1 - ty2, 1 - tz1, 1 - ty1, // left
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1 - tx2, 1 - ty2, 1 - tx1, 1 - ty1, // back
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tx1, 1 - ty2, tx2, 1 - ty1, // front
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};
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for (int i = 0; i != 24; ++i)
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coords[i] = txc[i];
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}
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void MapblockMeshGenerator::drawAutoLightedCuboid(aabb3f box, const f32 *txc,
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TileSpec *tiles, int tile_count, u8 mask)
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{
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bool scale = std::fabs(f->visual_scale - 1.0f) > 1e-3f;
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f32 texture_coord_buf[24];
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f32 dx1 = box.MinEdge.X;
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f32 dy1 = box.MinEdge.Y;
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f32 dz1 = box.MinEdge.Z;
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f32 dx2 = box.MaxEdge.X;
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f32 dy2 = box.MaxEdge.Y;
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f32 dz2 = box.MaxEdge.Z;
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if (scale) {
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if (!txc) { // generate texture coords before scaling
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generateCuboidTextureCoords(box, texture_coord_buf);
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txc = texture_coord_buf;
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}
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box.MinEdge *= f->visual_scale;
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box.MaxEdge *= f->visual_scale;
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}
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box.MinEdge += origin;
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box.MaxEdge += origin;
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if (!txc) {
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generateCuboidTextureCoords(box, texture_coord_buf);
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txc = texture_coord_buf;
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}
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if (!tiles) {
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tiles = &tile;
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tile_count = 1;
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}
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if (data->m_smooth_lighting) {
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LightInfo lights[8];
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for (int j = 0; j < 8; ++j) {
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v3f d;
|
|
d.X = (j & 4) ? dx2 : dx1;
|
|
d.Y = (j & 2) ? dy2 : dy1;
|
|
d.Z = (j & 1) ? dz2 : dz1;
|
|
lights[j] = blendLight(d);
|
|
}
|
|
drawCuboid(box, tiles, tile_count, lights, txc, mask);
|
|
} else {
|
|
drawCuboid(box, tiles, tile_count, nullptr, txc, mask);
|
|
}
|
|
}
|
|
|
|
u8 MapblockMeshGenerator::getNodeBoxMask(aabb3f box, u8 solid_neighbors, u8 sametype_neighbors) const
|
|
{
|
|
const f32 NODE_BOUNDARY = 0.5 * BS;
|
|
|
|
// For an oversized nodebox, return immediately
|
|
if (box.MaxEdge.X > NODE_BOUNDARY ||
|
|
box.MinEdge.X < -NODE_BOUNDARY ||
|
|
box.MaxEdge.Y > NODE_BOUNDARY ||
|
|
box.MinEdge.Y < -NODE_BOUNDARY ||
|
|
box.MaxEdge.Z > NODE_BOUNDARY ||
|
|
box.MinEdge.Z < -NODE_BOUNDARY)
|
|
return 0;
|
|
|
|
// We can skip faces at node boundary if the matching neighbor is solid
|
|
u8 solid_mask =
|
|
(box.MaxEdge.Y == NODE_BOUNDARY ? 1 : 0) |
|
|
(box.MinEdge.Y == -NODE_BOUNDARY ? 2 : 0) |
|
|
(box.MaxEdge.X == NODE_BOUNDARY ? 4 : 0) |
|
|
(box.MinEdge.X == -NODE_BOUNDARY ? 8 : 0) |
|
|
(box.MaxEdge.Z == NODE_BOUNDARY ? 16 : 0) |
|
|
(box.MinEdge.Z == -NODE_BOUNDARY ? 32 : 0);
|
|
|
|
u8 sametype_mask = 0;
|
|
if (f->alpha == AlphaMode::ALPHAMODE_OPAQUE) {
|
|
// In opaque nodeboxes, faces on opposite sides can cancel
|
|
// each other out if there is a matching neighbor of the same type
|
|
sametype_mask =
|
|
((solid_mask & 3) == 3 ? 3 : 0) |
|
|
((solid_mask & 12) == 12 ? 12 : 0) |
|
|
((solid_mask & 48) == 48 ? 48 : 0);
|
|
}
|
|
|
|
// Combine masks with actual neighbors to get the faces to be skipped
|
|
return (solid_mask & solid_neighbors) | (sametype_mask & sametype_neighbors);
|
|
}
|
|
|
|
|
|
void MapblockMeshGenerator::prepareLiquidNodeDrawing()
|
|
{
|
|
getSpecialTile(0, &tile_liquid_top);
|
|
getSpecialTile(1, &tile_liquid);
|
|
|
|
MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(p.X, p.Y + 1, p.Z));
|
|
MapNode nbottom = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(p.X, p.Y - 1, p.Z));
|
|
c_flowing = f->liquid_alternative_flowing_id;
|
|
c_source = f->liquid_alternative_source_id;
|
|
top_is_same_liquid = (ntop.getContent() == c_flowing) || (ntop.getContent() == c_source);
|
|
draw_liquid_bottom = (nbottom.getContent() != c_flowing) && (nbottom.getContent() != c_source);
|
|
if (draw_liquid_bottom) {
|
|
const ContentFeatures &f2 = nodedef->get(nbottom.getContent());
|
|
if (f2.solidness > 1)
|
|
draw_liquid_bottom = false;
|
|
}
|
|
|
|
if (data->m_smooth_lighting)
|
|
return; // don't need to pre-compute anything in this case
|
|
|
|
if (f->light_source != 0) {
|
|
// If this liquid emits light and doesn't contain light, draw
|
|
// it at what it emits, for an increased effect
|
|
u8 e = decode_light(f->light_source);
|
|
light = LightPair(std::max(e, light.lightDay), std::max(e, light.lightNight));
|
|
} else if (nodedef->get(ntop).param_type == CPT_LIGHT) {
|
|
// Otherwise, use the light of the node on top if possible
|
|
light = LightPair(getInteriorLight(ntop, 0, nodedef));
|
|
}
|
|
|
|
color_liquid_top = encode_light(light, f->light_source);
|
|
color = encode_light(light, f->light_source);
|
|
}
|
|
|
|
void MapblockMeshGenerator::getLiquidNeighborhood()
|
|
{
|
|
u8 range = rangelim(nodedef->get(c_flowing).liquid_range, 1, 8);
|
|
|
|
for (int w = -1; w <= 1; w++)
|
|
for (int u = -1; u <= 1; u++) {
|
|
NeighborData &neighbor = liquid_neighbors[w + 1][u + 1];
|
|
v3s16 p2 = p + v3s16(u, 0, w);
|
|
MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
|
|
neighbor.content = n2.getContent();
|
|
neighbor.level = -0.5 * BS;
|
|
neighbor.is_same_liquid = false;
|
|
neighbor.top_is_same_liquid = false;
|
|
|
|
if (neighbor.content == CONTENT_IGNORE)
|
|
continue;
|
|
|
|
if (neighbor.content == c_source) {
|
|
neighbor.is_same_liquid = true;
|
|
neighbor.level = 0.5 * BS;
|
|
} else if (neighbor.content == c_flowing) {
|
|
neighbor.is_same_liquid = true;
|
|
u8 liquid_level = (n2.param2 & LIQUID_LEVEL_MASK);
|
|
if (liquid_level <= LIQUID_LEVEL_MAX + 1 - range)
|
|
liquid_level = 0;
|
|
else
|
|
liquid_level -= (LIQUID_LEVEL_MAX + 1 - range);
|
|
neighbor.level = (-0.5 + (liquid_level + 0.5) / range) * BS;
|
|
}
|
|
|
|
// Check node above neighbor.
|
|
// NOTE: This doesn't get executed if neighbor
|
|
// doesn't exist
|
|
p2.Y++;
|
|
n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
|
|
if (n2.getContent() == c_source || n2.getContent() == c_flowing)
|
|
neighbor.top_is_same_liquid = true;
|
|
}
|
|
}
|
|
|
|
void MapblockMeshGenerator::calculateCornerLevels()
|
|
{
|
|
for (int k = 0; k < 2; k++)
|
|
for (int i = 0; i < 2; i++)
|
|
corner_levels[k][i] = getCornerLevel(i, k);
|
|
}
|
|
|
|
f32 MapblockMeshGenerator::getCornerLevel(int i, int k)
|
|
{
|
|
float sum = 0;
|
|
int count = 0;
|
|
int air_count = 0;
|
|
for (int dk = 0; dk < 2; dk++)
|
|
for (int di = 0; di < 2; di++) {
|
|
NeighborData &neighbor_data = liquid_neighbors[k + dk][i + di];
|
|
content_t content = neighbor_data.content;
|
|
|
|
// If top is liquid, draw starting from top of node
|
|
if (neighbor_data.top_is_same_liquid)
|
|
return 0.5 * BS;
|
|
|
|
// Source always has the full height
|
|
if (content == c_source)
|
|
return 0.5 * BS;
|
|
|
|
// Flowing liquid has level information
|
|
if (content == c_flowing) {
|
|
sum += neighbor_data.level;
|
|
count++;
|
|
} else if (content == CONTENT_AIR) {
|
|
air_count++;
|
|
}
|
|
}
|
|
if (air_count >= 2)
|
|
return -0.5 * BS + 0.2;
|
|
if (count > 0)
|
|
return sum / count;
|
|
return 0;
|
|
}
|
|
|
|
namespace {
|
|
struct LiquidFaceDesc {
|
|
v3s16 dir; // XZ
|
|
v3s16 p[2]; // XZ only; 1 means +, 0 means -
|
|
};
|
|
struct UV {
|
|
int u, v;
|
|
};
|
|
static const LiquidFaceDesc liquid_base_faces[4] = {
|
|
{v3s16( 1, 0, 0), {v3s16(1, 0, 1), v3s16(1, 0, 0)}},
|
|
{v3s16(-1, 0, 0), {v3s16(0, 0, 0), v3s16(0, 0, 1)}},
|
|
{v3s16( 0, 0, 1), {v3s16(0, 0, 1), v3s16(1, 0, 1)}},
|
|
{v3s16( 0, 0, -1), {v3s16(1, 0, 0), v3s16(0, 0, 0)}},
|
|
};
|
|
static const UV liquid_base_vertices[4] = {
|
|
{0, 1},
|
|
{1, 1},
|
|
{1, 0},
|
|
{0, 0}
|
|
};
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawLiquidSides()
|
|
{
|
|
for (const auto &face : liquid_base_faces) {
|
|
const NeighborData &neighbor = liquid_neighbors[face.dir.Z + 1][face.dir.X + 1];
|
|
|
|
// No face between nodes of the same liquid, unless there is node
|
|
// at the top to which it should be connected. Again, unless the face
|
|
// there would be inside the liquid
|
|
if (neighbor.is_same_liquid) {
|
|
if (!top_is_same_liquid)
|
|
continue;
|
|
if (neighbor.top_is_same_liquid)
|
|
continue;
|
|
}
|
|
|
|
const ContentFeatures &neighbor_features = nodedef->get(neighbor.content);
|
|
// Don't draw face if neighbor is blocking the view
|
|
if (neighbor_features.solidness == 2)
|
|
continue;
|
|
|
|
video::S3DVertex vertices[4];
|
|
for (int j = 0; j < 4; j++) {
|
|
const UV &vertex = liquid_base_vertices[j];
|
|
const v3s16 &base = face.p[vertex.u];
|
|
float v = vertex.v;
|
|
|
|
v3f pos;
|
|
pos.X = (base.X - 0.5f) * BS;
|
|
pos.Z = (base.Z - 0.5f) * BS;
|
|
if (vertex.v) {
|
|
pos.Y = neighbor.is_same_liquid ? corner_levels[base.Z][base.X] : -0.5f * BS;
|
|
} else if (top_is_same_liquid) {
|
|
pos.Y = 0.5f * BS;
|
|
} else {
|
|
pos.Y = corner_levels[base.Z][base.X];
|
|
v += (0.5f * BS - corner_levels[base.Z][base.X]) / BS;
|
|
}
|
|
|
|
if (data->m_smooth_lighting)
|
|
color = blendLightColor(pos);
|
|
pos += origin;
|
|
vertices[j] = video::S3DVertex(pos.X, pos.Y, pos.Z, 0, 0, 0, color, vertex.u, v);
|
|
};
|
|
collector->append(tile_liquid, vertices, 4, quad_indices, 6);
|
|
}
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawLiquidTop()
|
|
{
|
|
// To get backface culling right, the vertices need to go
|
|
// clockwise around the front of the face. And we happened to
|
|
// calculate corner levels in exact reverse order.
|
|
static const int corner_resolve[4][2] = {{0, 1}, {1, 1}, {1, 0}, {0, 0}};
|
|
|
|
video::S3DVertex vertices[4] = {
|
|
video::S3DVertex(-BS / 2, 0, BS / 2, 0, 0, 0, color_liquid_top, 0, 1),
|
|
video::S3DVertex( BS / 2, 0, BS / 2, 0, 0, 0, color_liquid_top, 1, 1),
|
|
video::S3DVertex( BS / 2, 0, -BS / 2, 0, 0, 0, color_liquid_top, 1, 0),
|
|
video::S3DVertex(-BS / 2, 0, -BS / 2, 0, 0, 0, color_liquid_top, 0, 0),
|
|
};
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
int u = corner_resolve[i][0];
|
|
int w = corner_resolve[i][1];
|
|
vertices[i].Pos.Y += corner_levels[w][u];
|
|
if (data->m_smooth_lighting)
|
|
vertices[i].Color = blendLightColor(vertices[i].Pos);
|
|
vertices[i].Pos += origin;
|
|
}
|
|
|
|
// Default downwards-flowing texture animation goes from
|
|
// -Z towards +Z, thus the direction is +Z.
|
|
// Rotate texture to make animation go in flow direction
|
|
// Positive if liquid moves towards +Z
|
|
f32 dz = (corner_levels[0][0] + corner_levels[0][1]) -
|
|
(corner_levels[1][0] + corner_levels[1][1]);
|
|
// Positive if liquid moves towards +X
|
|
f32 dx = (corner_levels[0][0] + corner_levels[1][0]) -
|
|
(corner_levels[0][1] + corner_levels[1][1]);
|
|
f32 tcoord_angle = atan2(dz, dx) * core::RADTODEG;
|
|
v2f tcoord_center(0.5, 0.5);
|
|
v2f tcoord_translate(blockpos_nodes.Z + p.Z, blockpos_nodes.X + p.X);
|
|
tcoord_translate.rotateBy(tcoord_angle);
|
|
tcoord_translate.X -= floor(tcoord_translate.X);
|
|
tcoord_translate.Y -= floor(tcoord_translate.Y);
|
|
|
|
for (video::S3DVertex &vertex : vertices) {
|
|
vertex.TCoords.rotateBy(tcoord_angle, tcoord_center);
|
|
vertex.TCoords += tcoord_translate;
|
|
}
|
|
|
|
std::swap(vertices[0].TCoords, vertices[2].TCoords);
|
|
|
|
collector->append(tile_liquid_top, vertices, 4, quad_indices, 6);
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawLiquidBottom()
|
|
{
|
|
video::S3DVertex vertices[4] = {
|
|
video::S3DVertex(-BS / 2, -BS / 2, -BS / 2, 0, 0, 0, color_liquid_top, 0, 0),
|
|
video::S3DVertex( BS / 2, -BS / 2, -BS / 2, 0, 0, 0, color_liquid_top, 1, 0),
|
|
video::S3DVertex( BS / 2, -BS / 2, BS / 2, 0, 0, 0, color_liquid_top, 1, 1),
|
|
video::S3DVertex(-BS / 2, -BS / 2, BS / 2, 0, 0, 0, color_liquid_top, 0, 1),
|
|
};
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
if (data->m_smooth_lighting)
|
|
vertices[i].Color = blendLightColor(vertices[i].Pos);
|
|
vertices[i].Pos += origin;
|
|
}
|
|
|
|
collector->append(tile_liquid_top, vertices, 4, quad_indices, 6);
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawLiquidNode()
|
|
{
|
|
prepareLiquidNodeDrawing();
|
|
getLiquidNeighborhood();
|
|
calculateCornerLevels();
|
|
drawLiquidSides();
|
|
if (!top_is_same_liquid)
|
|
drawLiquidTop();
|
|
if (draw_liquid_bottom)
|
|
drawLiquidBottom();
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawGlasslikeNode()
|
|
{
|
|
useTile(0, 0, 0);
|
|
|
|
for (int face = 0; face < 6; face++) {
|
|
// Check this neighbor
|
|
v3s16 dir = g_6dirs[face];
|
|
v3s16 neighbor_pos = blockpos_nodes + p + dir;
|
|
MapNode neighbor = data->m_vmanip.getNodeNoExNoEmerge(neighbor_pos);
|
|
// Don't make face if neighbor is of same type
|
|
if (neighbor.getContent() == n.getContent())
|
|
continue;
|
|
// Face at Z-
|
|
v3f vertices[4] = {
|
|
v3f(-BS / 2, BS / 2, -BS / 2),
|
|
v3f( BS / 2, BS / 2, -BS / 2),
|
|
v3f( BS / 2, -BS / 2, -BS / 2),
|
|
v3f(-BS / 2, -BS / 2, -BS / 2),
|
|
};
|
|
|
|
for (v3f &vertex : vertices) {
|
|
switch (face) {
|
|
case D6D_ZP:
|
|
vertex.rotateXZBy(180); break;
|
|
case D6D_YP:
|
|
vertex.rotateYZBy( 90); break;
|
|
case D6D_XP:
|
|
vertex.rotateXZBy( 90); break;
|
|
case D6D_ZN:
|
|
vertex.rotateXZBy( 0); break;
|
|
case D6D_YN:
|
|
vertex.rotateYZBy(-90); break;
|
|
case D6D_XN:
|
|
vertex.rotateXZBy(-90); break;
|
|
}
|
|
}
|
|
drawQuad(vertices, dir);
|
|
}
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawGlasslikeFramedNode()
|
|
{
|
|
TileSpec tiles[6];
|
|
for (int face = 0; face < 6; face++)
|
|
getTile(g_6dirs[face], &tiles[face]);
|
|
|
|
if (!data->m_smooth_lighting)
|
|
color = encode_light(light, f->light_source);
|
|
|
|
TileSpec glass_tiles[6];
|
|
for (auto &glass_tile : glass_tiles)
|
|
glass_tile = tiles[4];
|
|
|
|
// Only respect H/V merge bits when paramtype2 = "glasslikeliquidlevel" (liquid tank)
|
|
u8 param2 = (f->param_type_2 == CPT2_GLASSLIKE_LIQUID_LEVEL) ? n.getParam2() : 0;
|
|
bool H_merge = !(param2 & 128);
|
|
bool V_merge = !(param2 & 64);
|
|
param2 &= 63;
|
|
|
|
static const float a = BS / 2.0f;
|
|
static const float g = a - 0.03f;
|
|
static const float b = 0.876f * (BS / 2.0f);
|
|
|
|
static const aabb3f frame_edges[FRAMED_EDGE_COUNT] = {
|
|
aabb3f( b, b, -a, a, a, a), // y+
|
|
aabb3f(-a, b, -a, -b, a, a), // y+
|
|
aabb3f( b, -a, -a, a, -b, a), // y-
|
|
aabb3f(-a, -a, -a, -b, -b, a), // y-
|
|
aabb3f( b, -a, b, a, a, a), // x+
|
|
aabb3f( b, -a, -a, a, a, -b), // x+
|
|
aabb3f(-a, -a, b, -b, a, a), // x-
|
|
aabb3f(-a, -a, -a, -b, a, -b), // x-
|
|
aabb3f(-a, b, b, a, a, a), // z+
|
|
aabb3f(-a, -a, b, a, -b, a), // z+
|
|
aabb3f(-a, -a, -a, a, -b, -b), // z-
|
|
aabb3f(-a, b, -a, a, a, -b), // z-
|
|
};
|
|
|
|
// tables of neighbour (connect if same type and merge allowed),
|
|
// checked with g_26dirs
|
|
|
|
// 1 = connect, 0 = face visible
|
|
bool nb[FRAMED_NEIGHBOR_COUNT] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
|
|
|
|
// 1 = check
|
|
static const bool check_nb_vertical [FRAMED_NEIGHBOR_COUNT] =
|
|
{0,1,0,0,1,0, 0,0,0,0, 0,0,0,0, 0,0,0,0};
|
|
static const bool check_nb_horizontal [FRAMED_NEIGHBOR_COUNT] =
|
|
{1,0,1,1,0,1, 0,0,0,0, 1,1,1,1, 0,0,0,0};
|
|
static const bool check_nb_all [FRAMED_NEIGHBOR_COUNT] =
|
|
{1,1,1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1};
|
|
const bool *check_nb = check_nb_all;
|
|
|
|
// neighbours checks for frames visibility
|
|
if (H_merge || V_merge) {
|
|
if (!H_merge)
|
|
check_nb = check_nb_vertical; // vertical-only merge
|
|
if (!V_merge)
|
|
check_nb = check_nb_horizontal; // horizontal-only merge
|
|
content_t current = n.getContent();
|
|
for (int i = 0; i < FRAMED_NEIGHBOR_COUNT; i++) {
|
|
if (!check_nb[i])
|
|
continue;
|
|
v3s16 n2p = blockpos_nodes + p + g_26dirs[i];
|
|
MapNode n2 = data->m_vmanip.getNodeNoEx(n2p);
|
|
content_t n2c = n2.getContent();
|
|
if (n2c == current)
|
|
nb[i] = 1;
|
|
}
|
|
}
|
|
|
|
// edge visibility
|
|
|
|
static const u8 nb_triplet[FRAMED_EDGE_COUNT][3] = {
|
|
{1, 2, 7}, {1, 5, 6}, {4, 2, 15}, {4, 5, 14},
|
|
{2, 0, 11}, {2, 3, 13}, {5, 0, 10}, {5, 3, 12},
|
|
{0, 1, 8}, {0, 4, 16}, {3, 4, 17}, {3, 1, 9},
|
|
};
|
|
|
|
tile = tiles[1];
|
|
for (int edge = 0; edge < FRAMED_EDGE_COUNT; edge++) {
|
|
bool edge_invisible;
|
|
if (nb[nb_triplet[edge][2]])
|
|
edge_invisible = nb[nb_triplet[edge][0]] & nb[nb_triplet[edge][1]];
|
|
else
|
|
edge_invisible = nb[nb_triplet[edge][0]] ^ nb[nb_triplet[edge][1]];
|
|
if (edge_invisible)
|
|
continue;
|
|
drawAutoLightedCuboid(frame_edges[edge]);
|
|
}
|
|
|
|
for (int face = 0; face < 6; face++) {
|
|
if (nb[face])
|
|
continue;
|
|
|
|
tile = glass_tiles[face];
|
|
// Face at Z-
|
|
v3f vertices[4] = {
|
|
v3f(-a, a, -g),
|
|
v3f( a, a, -g),
|
|
v3f( a, -a, -g),
|
|
v3f(-a, -a, -g),
|
|
};
|
|
|
|
for (v3f &vertex : vertices) {
|
|
switch (face) {
|
|
case D6D_ZP:
|
|
vertex.rotateXZBy(180); break;
|
|
case D6D_YP:
|
|
vertex.rotateYZBy( 90); break;
|
|
case D6D_XP:
|
|
vertex.rotateXZBy( 90); break;
|
|
case D6D_ZN:
|
|
vertex.rotateXZBy( 0); break;
|
|
case D6D_YN:
|
|
vertex.rotateYZBy(-90); break;
|
|
case D6D_XN:
|
|
vertex.rotateXZBy(-90); break;
|
|
}
|
|
}
|
|
v3s16 dir = g_6dirs[face];
|
|
drawQuad(vertices, dir);
|
|
}
|
|
|
|
// Optionally render internal liquid level defined by param2
|
|
// Liquid is textured with 1 tile defined in nodedef 'special_tiles'
|
|
if (param2 > 0 && f->param_type_2 == CPT2_GLASSLIKE_LIQUID_LEVEL &&
|
|
f->special_tiles[0].layers[0].texture) {
|
|
// Internal liquid level has param2 range 0 .. 63,
|
|
// convert it to -0.5 .. 0.5
|
|
float vlev = (param2 / 63.0f) * 2.0f - 1.0f;
|
|
getSpecialTile(0, &tile);
|
|
drawAutoLightedCuboid(aabb3f(-(nb[5] ? g : b),
|
|
-(nb[4] ? g : b),
|
|
-(nb[3] ? g : b),
|
|
(nb[2] ? g : b),
|
|
(nb[1] ? g : b) * vlev,
|
|
(nb[0] ? g : b)));
|
|
}
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawAllfacesNode()
|
|
{
|
|
static const aabb3f box(-BS / 2, -BS / 2, -BS / 2, BS / 2, BS / 2, BS / 2);
|
|
useTile(0, 0, 0);
|
|
drawAutoLightedCuboid(box);
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawTorchlikeNode()
|
|
{
|
|
u8 wall = n.getWallMounted(nodedef);
|
|
u8 tileindex = 0;
|
|
switch (wall) {
|
|
case DWM_YP: tileindex = 1; break; // ceiling
|
|
case DWM_YN: tileindex = 0; break; // floor
|
|
default: tileindex = 2; // side (or invalid—should we care?)
|
|
}
|
|
useTile(tileindex, MATERIAL_FLAG_CRACK_OVERLAY, MATERIAL_FLAG_BACKFACE_CULLING);
|
|
|
|
float size = BS / 2 * f->visual_scale;
|
|
v3f vertices[4] = {
|
|
v3f(-size, size, 0),
|
|
v3f( size, size, 0),
|
|
v3f( size, -size, 0),
|
|
v3f(-size, -size, 0),
|
|
};
|
|
|
|
for (v3f &vertex : vertices) {
|
|
switch (wall) {
|
|
case DWM_YP:
|
|
vertex.Y += -size + BS/2;
|
|
vertex.rotateXZBy(-45);
|
|
break;
|
|
case DWM_YN:
|
|
vertex.Y += size - BS/2;
|
|
vertex.rotateXZBy(45);
|
|
break;
|
|
case DWM_XP:
|
|
vertex.X += -size + BS/2;
|
|
break;
|
|
case DWM_XN:
|
|
vertex.X += -size + BS/2;
|
|
vertex.rotateXZBy(180);
|
|
break;
|
|
case DWM_ZP:
|
|
vertex.X += -size + BS/2;
|
|
vertex.rotateXZBy(90);
|
|
break;
|
|
case DWM_ZN:
|
|
vertex.X += -size + BS/2;
|
|
vertex.rotateXZBy(-90);
|
|
}
|
|
}
|
|
drawQuad(vertices);
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawSignlikeNode()
|
|
{
|
|
u8 wall = n.getWallMounted(nodedef);
|
|
useTile(0, MATERIAL_FLAG_CRACK_OVERLAY, MATERIAL_FLAG_BACKFACE_CULLING);
|
|
static const float offset = BS / 16;
|
|
float size = BS / 2 * f->visual_scale;
|
|
// Wall at X+ of node
|
|
v3f vertices[4] = {
|
|
v3f(BS / 2 - offset, size, size),
|
|
v3f(BS / 2 - offset, size, -size),
|
|
v3f(BS / 2 - offset, -size, -size),
|
|
v3f(BS / 2 - offset, -size, size),
|
|
};
|
|
|
|
for (v3f &vertex : vertices) {
|
|
switch (wall) {
|
|
case DWM_YP:
|
|
vertex.rotateXYBy( 90); break;
|
|
case DWM_YN:
|
|
vertex.rotateXYBy(-90); break;
|
|
case DWM_XP:
|
|
vertex.rotateXZBy( 0); break;
|
|
case DWM_XN:
|
|
vertex.rotateXZBy(180); break;
|
|
case DWM_ZP:
|
|
vertex.rotateXZBy( 90); break;
|
|
case DWM_ZN:
|
|
vertex.rotateXZBy(-90); break;
|
|
}
|
|
}
|
|
drawQuad(vertices);
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawPlantlikeQuad(float rotation, float quad_offset,
|
|
bool offset_top_only)
|
|
{
|
|
v3f vertices[4] = {
|
|
v3f(-scale, -BS / 2 + 2.0 * scale * plant_height, 0),
|
|
v3f( scale, -BS / 2 + 2.0 * scale * plant_height, 0),
|
|
v3f( scale, -BS / 2, 0),
|
|
v3f(-scale, -BS / 2, 0),
|
|
};
|
|
if (random_offset_Y) {
|
|
PseudoRandom yrng(face_num++ | p.X << 16 | p.Z << 8 | p.Y << 24);
|
|
offset.Y = -BS * ((yrng.next() % 16 / 16.0) * 0.125);
|
|
}
|
|
int offset_count = offset_top_only ? 2 : 4;
|
|
for (int i = 0; i < offset_count; i++)
|
|
vertices[i].Z += quad_offset;
|
|
|
|
for (v3f &vertex : vertices) {
|
|
vertex.rotateXZBy(rotation + rotate_degree);
|
|
vertex += offset;
|
|
}
|
|
|
|
u8 wall = n.getWallMounted(nodedef);
|
|
if (wall != DWM_YN) {
|
|
for (v3f &vertex : vertices) {
|
|
switch (wall) {
|
|
case DWM_YP:
|
|
vertex.rotateYZBy(180);
|
|
vertex.rotateXZBy(180);
|
|
break;
|
|
case DWM_XP:
|
|
vertex.rotateXYBy(90);
|
|
break;
|
|
case DWM_XN:
|
|
vertex.rotateXYBy(-90);
|
|
vertex.rotateYZBy(180);
|
|
break;
|
|
case DWM_ZP:
|
|
vertex.rotateYZBy(-90);
|
|
vertex.rotateXYBy(90);
|
|
break;
|
|
case DWM_ZN:
|
|
vertex.rotateYZBy(90);
|
|
vertex.rotateXYBy(90);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
drawQuad(vertices, v3s16(0, 0, 0), plant_height);
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawPlantlike(bool is_rooted)
|
|
{
|
|
draw_style = PLANT_STYLE_CROSS;
|
|
scale = BS / 2 * f->visual_scale;
|
|
offset = v3f(0, 0, 0);
|
|
rotate_degree = 0.0f;
|
|
random_offset_Y = false;
|
|
face_num = 0;
|
|
plant_height = 1.0;
|
|
|
|
switch (f->param_type_2) {
|
|
case CPT2_MESHOPTIONS:
|
|
draw_style = PlantlikeStyle(n.param2 & MO_MASK_STYLE);
|
|
if (n.param2 & MO_BIT_SCALE_SQRT2)
|
|
scale *= 1.41421;
|
|
if (n.param2 & MO_BIT_RANDOM_OFFSET) {
|
|
PseudoRandom rng(p.X << 8 | p.Z | p.Y << 16);
|
|
offset.X = BS * ((rng.next() % 16 / 16.0) * 0.29 - 0.145);
|
|
offset.Z = BS * ((rng.next() % 16 / 16.0) * 0.29 - 0.145);
|
|
}
|
|
if (n.param2 & MO_BIT_RANDOM_OFFSET_Y)
|
|
random_offset_Y = true;
|
|
break;
|
|
|
|
case CPT2_DEGROTATE:
|
|
case CPT2_COLORED_DEGROTATE:
|
|
rotate_degree = 1.5f * n.getDegRotate(nodedef);
|
|
break;
|
|
|
|
case CPT2_LEVELED:
|
|
plant_height = n.param2 / 16.0;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (is_rooted) {
|
|
u8 wall = n.getWallMounted(nodedef);
|
|
switch (wall) {
|
|
case DWM_YP:
|
|
offset.Y += BS*2;
|
|
break;
|
|
case DWM_XN:
|
|
case DWM_XP:
|
|
case DWM_ZN:
|
|
case DWM_ZP:
|
|
offset.X += -BS;
|
|
offset.Y += BS;
|
|
break;
|
|
}
|
|
}
|
|
|
|
switch (draw_style) {
|
|
case PLANT_STYLE_CROSS:
|
|
drawPlantlikeQuad(46);
|
|
drawPlantlikeQuad(-44);
|
|
break;
|
|
|
|
case PLANT_STYLE_CROSS2:
|
|
drawPlantlikeQuad(91);
|
|
drawPlantlikeQuad(1);
|
|
break;
|
|
|
|
case PLANT_STYLE_STAR:
|
|
drawPlantlikeQuad(121);
|
|
drawPlantlikeQuad(241);
|
|
drawPlantlikeQuad(1);
|
|
break;
|
|
|
|
case PLANT_STYLE_HASH:
|
|
drawPlantlikeQuad( 1, BS / 4);
|
|
drawPlantlikeQuad( 91, BS / 4);
|
|
drawPlantlikeQuad(181, BS / 4);
|
|
drawPlantlikeQuad(271, BS / 4);
|
|
break;
|
|
|
|
case PLANT_STYLE_HASH2:
|
|
drawPlantlikeQuad( 1, -BS / 2, true);
|
|
drawPlantlikeQuad( 91, -BS / 2, true);
|
|
drawPlantlikeQuad(181, -BS / 2, true);
|
|
drawPlantlikeQuad(271, -BS / 2, true);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawPlantlikeNode()
|
|
{
|
|
useTile();
|
|
drawPlantlike();
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawPlantlikeRootedNode()
|
|
{
|
|
useTile(0, MATERIAL_FLAG_CRACK_OVERLAY, 0, true);
|
|
origin += v3f(0.0, BS, 0.0);
|
|
p.Y++;
|
|
if (data->m_smooth_lighting) {
|
|
getSmoothLightFrame();
|
|
} else {
|
|
MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + p);
|
|
light = LightPair(getInteriorLight(ntop, 1, nodedef));
|
|
}
|
|
drawPlantlike(true);
|
|
p.Y--;
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawFirelikeQuad(float rotation, float opening_angle,
|
|
float offset_h, float offset_v)
|
|
{
|
|
v3f vertices[4] = {
|
|
v3f(-scale, -BS / 2 + scale * 2, 0),
|
|
v3f( scale, -BS / 2 + scale * 2, 0),
|
|
v3f( scale, -BS / 2, 0),
|
|
v3f(-scale, -BS / 2, 0),
|
|
};
|
|
|
|
for (v3f &vertex : vertices) {
|
|
vertex.rotateYZBy(opening_angle);
|
|
vertex.Z += offset_h;
|
|
vertex.rotateXZBy(rotation);
|
|
vertex.Y += offset_v;
|
|
}
|
|
drawQuad(vertices);
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawFirelikeNode()
|
|
{
|
|
useTile();
|
|
scale = BS / 2 * f->visual_scale;
|
|
|
|
// Check for adjacent nodes
|
|
bool neighbors = false;
|
|
bool neighbor[6] = {0, 0, 0, 0, 0, 0};
|
|
content_t current = n.getContent();
|
|
for (int i = 0; i < 6; i++) {
|
|
v3s16 n2p = blockpos_nodes + p + g_6dirs[i];
|
|
MapNode n2 = data->m_vmanip.getNodeNoEx(n2p);
|
|
content_t n2c = n2.getContent();
|
|
if (n2c != CONTENT_IGNORE && n2c != CONTENT_AIR && n2c != current) {
|
|
neighbor[i] = true;
|
|
neighbors = true;
|
|
}
|
|
}
|
|
bool drawBasicFire = neighbor[D6D_YN] || !neighbors;
|
|
bool drawBottomFire = neighbor[D6D_YP];
|
|
|
|
if (drawBasicFire || neighbor[D6D_ZP])
|
|
drawFirelikeQuad(0, -10, 0.4 * BS);
|
|
else if (drawBottomFire)
|
|
drawFirelikeQuad(0, 70, 0.47 * BS, 0.484 * BS);
|
|
|
|
if (drawBasicFire || neighbor[D6D_XN])
|
|
drawFirelikeQuad(90, -10, 0.4 * BS);
|
|
else if (drawBottomFire)
|
|
drawFirelikeQuad(90, 70, 0.47 * BS, 0.484 * BS);
|
|
|
|
if (drawBasicFire || neighbor[D6D_ZN])
|
|
drawFirelikeQuad(180, -10, 0.4 * BS);
|
|
else if (drawBottomFire)
|
|
drawFirelikeQuad(180, 70, 0.47 * BS, 0.484 * BS);
|
|
|
|
if (drawBasicFire || neighbor[D6D_XP])
|
|
drawFirelikeQuad(270, -10, 0.4 * BS);
|
|
else if (drawBottomFire)
|
|
drawFirelikeQuad(270, 70, 0.47 * BS, 0.484 * BS);
|
|
|
|
if (drawBasicFire) {
|
|
drawFirelikeQuad(45, 0, 0.0);
|
|
drawFirelikeQuad(-45, 0, 0.0);
|
|
}
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawFencelikeNode()
|
|
{
|
|
useTile(0, 0, 0);
|
|
TileSpec tile_nocrack = tile;
|
|
|
|
for (auto &layer : tile_nocrack.layers)
|
|
layer.material_flags &= ~MATERIAL_FLAG_CRACK;
|
|
|
|
// Put wood the right way around in the posts
|
|
TileSpec tile_rot = tile;
|
|
tile_rot.rotation = 1;
|
|
|
|
static const f32 post_rad = BS / 8;
|
|
static const f32 bar_rad = BS / 16;
|
|
static const f32 bar_len = BS / 2 - post_rad;
|
|
|
|
// The post - always present
|
|
static const aabb3f post(-post_rad, -BS / 2, -post_rad,
|
|
post_rad, BS / 2, post_rad);
|
|
static const f32 postuv[24] = {
|
|
0.375, 0.375, 0.625, 0.625,
|
|
0.375, 0.375, 0.625, 0.625,
|
|
0.000, 0.000, 0.250, 1.000,
|
|
0.250, 0.000, 0.500, 1.000,
|
|
0.500, 0.000, 0.750, 1.000,
|
|
0.750, 0.000, 1.000, 1.000,
|
|
};
|
|
tile = tile_rot;
|
|
drawAutoLightedCuboid(post, postuv);
|
|
|
|
tile = tile_nocrack;
|
|
|
|
// Now a section of fence, +X, if there's a post there
|
|
v3s16 p2 = p;
|
|
p2.X++;
|
|
MapNode n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
|
|
const ContentFeatures *f2 = &nodedef->get(n2);
|
|
if (f2->drawtype == NDT_FENCELIKE) {
|
|
static const aabb3f bar_x1(BS / 2 - bar_len, BS / 4 - bar_rad, -bar_rad,
|
|
BS / 2 + bar_len, BS / 4 + bar_rad, bar_rad);
|
|
static const aabb3f bar_x2(BS / 2 - bar_len, -BS / 4 - bar_rad, -bar_rad,
|
|
BS / 2 + bar_len, -BS / 4 + bar_rad, bar_rad);
|
|
static const f32 xrailuv[24] = {
|
|
0.000, 0.125, 1.000, 0.250,
|
|
0.000, 0.250, 1.000, 0.375,
|
|
0.375, 0.375, 0.500, 0.500,
|
|
0.625, 0.625, 0.750, 0.750,
|
|
0.000, 0.500, 1.000, 0.625,
|
|
0.000, 0.875, 1.000, 1.000,
|
|
};
|
|
drawAutoLightedCuboid(bar_x1, xrailuv);
|
|
drawAutoLightedCuboid(bar_x2, xrailuv);
|
|
}
|
|
|
|
// Now a section of fence, +Z, if there's a post there
|
|
p2 = p;
|
|
p2.Z++;
|
|
n2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p2);
|
|
f2 = &nodedef->get(n2);
|
|
if (f2->drawtype == NDT_FENCELIKE) {
|
|
static const aabb3f bar_z1(-bar_rad, BS / 4 - bar_rad, BS / 2 - bar_len,
|
|
bar_rad, BS / 4 + bar_rad, BS / 2 + bar_len);
|
|
static const aabb3f bar_z2(-bar_rad, -BS / 4 - bar_rad, BS / 2 - bar_len,
|
|
bar_rad, -BS / 4 + bar_rad, BS / 2 + bar_len);
|
|
static const f32 zrailuv[24] = {
|
|
0.1875, 0.0625, 0.3125, 0.3125, // cannot rotate; stretch
|
|
0.2500, 0.0625, 0.3750, 0.3125, // for wood texture instead
|
|
0.0000, 0.5625, 1.0000, 0.6875,
|
|
0.0000, 0.3750, 1.0000, 0.5000,
|
|
0.3750, 0.3750, 0.5000, 0.5000,
|
|
0.6250, 0.6250, 0.7500, 0.7500,
|
|
};
|
|
drawAutoLightedCuboid(bar_z1, zrailuv);
|
|
drawAutoLightedCuboid(bar_z2, zrailuv);
|
|
}
|
|
}
|
|
|
|
bool MapblockMeshGenerator::isSameRail(v3s16 dir)
|
|
{
|
|
MapNode node2 = data->m_vmanip.getNodeNoEx(blockpos_nodes + p + dir);
|
|
if (node2.getContent() == n.getContent())
|
|
return true;
|
|
const ContentFeatures &def2 = nodedef->get(node2);
|
|
return ((def2.drawtype == NDT_RAILLIKE) &&
|
|
(def2.getGroup(raillike_groupname) == raillike_group));
|
|
}
|
|
|
|
namespace {
|
|
static const v3s16 rail_direction[4] = {
|
|
v3s16( 0, 0, 1),
|
|
v3s16( 0, 0, -1),
|
|
v3s16(-1, 0, 0),
|
|
v3s16( 1, 0, 0),
|
|
};
|
|
static const int rail_slope_angle[4] = {0, 180, 90, -90};
|
|
|
|
enum RailTile {
|
|
straight,
|
|
curved,
|
|
junction,
|
|
cross,
|
|
};
|
|
struct RailDesc {
|
|
int tile_index;
|
|
int angle;
|
|
};
|
|
static const RailDesc rail_kinds[16] = {
|
|
// +x -x -z +z
|
|
//-------------
|
|
{straight, 0}, // . . . .
|
|
{straight, 0}, // . . . +Z
|
|
{straight, 0}, // . . -Z .
|
|
{straight, 0}, // . . -Z +Z
|
|
{straight, 90}, // . -X . .
|
|
{ curved, 180}, // . -X . +Z
|
|
{ curved, 270}, // . -X -Z .
|
|
{junction, 180}, // . -X -Z +Z
|
|
{straight, 90}, // +X . . .
|
|
{ curved, 90}, // +X . . +Z
|
|
{ curved, 0}, // +X . -Z .
|
|
{junction, 0}, // +X . -Z +Z
|
|
{straight, 90}, // +X -X . .
|
|
{junction, 90}, // +X -X . +Z
|
|
{junction, 270}, // +X -X -Z .
|
|
{ cross, 0}, // +X -X -Z +Z
|
|
};
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawRaillikeNode()
|
|
{
|
|
raillike_group = nodedef->get(n).getGroup(raillike_groupname);
|
|
|
|
int code = 0;
|
|
int angle;
|
|
int tile_index;
|
|
bool sloped = false;
|
|
for (int dir = 0; dir < 4; dir++) {
|
|
bool rail_above = isSameRail(rail_direction[dir] + v3s16(0, 1, 0));
|
|
if (rail_above) {
|
|
sloped = true;
|
|
angle = rail_slope_angle[dir];
|
|
}
|
|
if (rail_above ||
|
|
isSameRail(rail_direction[dir]) ||
|
|
isSameRail(rail_direction[dir] + v3s16(0, -1, 0)))
|
|
code |= 1 << dir;
|
|
}
|
|
|
|
if (sloped) {
|
|
tile_index = straight;
|
|
} else {
|
|
tile_index = rail_kinds[code].tile_index;
|
|
angle = rail_kinds[code].angle;
|
|
}
|
|
|
|
useTile(tile_index, MATERIAL_FLAG_CRACK_OVERLAY, MATERIAL_FLAG_BACKFACE_CULLING);
|
|
|
|
static const float offset = BS / 64;
|
|
static const float size = BS / 2;
|
|
float y2 = sloped ? size : -size;
|
|
v3f vertices[4] = {
|
|
v3f(-size, y2 + offset, size),
|
|
v3f( size, y2 + offset, size),
|
|
v3f( size, -size + offset, -size),
|
|
v3f(-size, -size + offset, -size),
|
|
};
|
|
if (angle)
|
|
for (v3f &vertex : vertices)
|
|
vertex.rotateXZBy(angle);
|
|
drawQuad(vertices);
|
|
}
|
|
|
|
namespace {
|
|
static const v3s16 nodebox_tile_dirs[6] = {
|
|
v3s16(0, 1, 0),
|
|
v3s16(0, -1, 0),
|
|
v3s16(1, 0, 0),
|
|
v3s16(-1, 0, 0),
|
|
v3s16(0, 0, 1),
|
|
v3s16(0, 0, -1)
|
|
};
|
|
|
|
// we have this order for some reason...
|
|
static const v3s16 nodebox_connection_dirs[6] = {
|
|
v3s16( 0, 1, 0), // top
|
|
v3s16( 0, -1, 0), // bottom
|
|
v3s16( 0, 0, -1), // front
|
|
v3s16(-1, 0, 0), // left
|
|
v3s16( 0, 0, 1), // back
|
|
v3s16( 1, 0, 0), // right
|
|
};
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawNodeboxNode()
|
|
{
|
|
TileSpec tiles[6];
|
|
for (int face = 0; face < 6; face++) {
|
|
// Handles facedir rotation for textures
|
|
getTile(nodebox_tile_dirs[face], &tiles[face]);
|
|
}
|
|
|
|
bool param2_is_rotation =
|
|
f->param_type_2 == CPT2_COLORED_FACEDIR ||
|
|
f->param_type_2 == CPT2_COLORED_WALLMOUNTED ||
|
|
f->param_type_2 == CPT2_FACEDIR ||
|
|
f->param_type_2 == CPT2_WALLMOUNTED;
|
|
|
|
bool param2_is_level =
|
|
f->param_type_2 == CPT2_LEVELED;
|
|
|
|
// locate possible neighboring nodes to connect to
|
|
u8 neighbors_set = 0;
|
|
u8 solid_neighbors = 0;
|
|
u8 sametype_neighbors = 0;
|
|
for (int dir = 0; dir != 6; dir++) {
|
|
u8 flag = 1 << dir;
|
|
v3s16 p2 = blockpos_nodes + p + nodebox_tile_dirs[dir];
|
|
MapNode n2 = data->m_vmanip.getNodeNoEx(p2);
|
|
|
|
// mark neighbors that are the same node type
|
|
// and have the same rotation or higher level stored as param2
|
|
if (n2.param0 == n.param0 &&
|
|
(!param2_is_rotation || n.param2 == n2.param2) &&
|
|
(!param2_is_level || n.param2 <= n2.param2))
|
|
sametype_neighbors |= flag;
|
|
|
|
// mark neighbors that are simple solid blocks
|
|
if (nodedef->get(n2).drawtype == NDT_NORMAL)
|
|
solid_neighbors |= flag;
|
|
|
|
if (f->node_box.type == NODEBOX_CONNECTED) {
|
|
p2 = blockpos_nodes + p + nodebox_connection_dirs[dir];
|
|
n2 = data->m_vmanip.getNodeNoEx(p2);
|
|
if (nodedef->nodeboxConnects(n, n2, flag))
|
|
neighbors_set |= flag;
|
|
}
|
|
}
|
|
|
|
std::vector<aabb3f> boxes;
|
|
n.getNodeBoxes(nodedef, &boxes, neighbors_set);
|
|
|
|
bool isTransparent = false;
|
|
|
|
for (const TileSpec &tile : tiles) {
|
|
if (tile.layers[0].isTransparent()) {
|
|
isTransparent = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (isTransparent) {
|
|
std::vector<float> sections;
|
|
// Preallocate 8 default splits + Min&Max for each nodebox
|
|
sections.reserve(8 + 2 * boxes.size());
|
|
|
|
for (int axis = 0; axis < 3; axis++) {
|
|
// identify sections
|
|
|
|
if (axis == 0) {
|
|
// Default split at node bounds, up to 3 nodes in each direction
|
|
for (float s = -3.5f * BS; s < 4.0f * BS; s += 1.0f * BS)
|
|
sections.push_back(s);
|
|
}
|
|
else {
|
|
// Avoid readding the same 8 default splits for Y and Z
|
|
sections.resize(8);
|
|
}
|
|
|
|
// Add edges of existing node boxes, rounded to 1E-3
|
|
for (size_t i = 0; i < boxes.size(); i++) {
|
|
sections.push_back(std::floor(boxes[i].MinEdge[axis] * 1E3) * 1E-3);
|
|
sections.push_back(std::floor(boxes[i].MaxEdge[axis] * 1E3) * 1E-3);
|
|
}
|
|
|
|
// split the boxes at recorded sections
|
|
// limit splits to avoid runaway crash if inner loop adds infinite splits
|
|
// due to e.g. precision problems.
|
|
// 100 is just an arbitrary, reasonably high number.
|
|
for (size_t i = 0; i < boxes.size() && i < 100; i++) {
|
|
aabb3f *box = &boxes[i];
|
|
for (float section : sections) {
|
|
if (box->MinEdge[axis] < section && box->MaxEdge[axis] > section) {
|
|
aabb3f copy(*box);
|
|
copy.MinEdge[axis] = section;
|
|
box->MaxEdge[axis] = section;
|
|
boxes.push_back(copy);
|
|
box = &boxes[i]; // find new address of the box in case of reallocation
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
for (auto &box : boxes) {
|
|
u8 mask = getNodeBoxMask(box, solid_neighbors, sametype_neighbors);
|
|
drawAutoLightedCuboid(box, nullptr, tiles, 6, mask);
|
|
}
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawMeshNode()
|
|
{
|
|
u8 facedir = 0;
|
|
scene::IMesh* mesh;
|
|
bool private_mesh; // as a grab/drop pair is not thread-safe
|
|
int degrotate = 0;
|
|
|
|
if (f->param_type_2 == CPT2_FACEDIR ||
|
|
f->param_type_2 == CPT2_COLORED_FACEDIR ||
|
|
f->param_type_2 == CPT2_4DIR ||
|
|
f->param_type_2 == CPT2_COLORED_4DIR) {
|
|
facedir = n.getFaceDir(nodedef);
|
|
} else if (f->param_type_2 == CPT2_WALLMOUNTED ||
|
|
f->param_type_2 == CPT2_COLORED_WALLMOUNTED) {
|
|
// Convert wallmounted to 6dfacedir.
|
|
// When cache enabled, it is already converted.
|
|
facedir = n.getWallMounted(nodedef);
|
|
if (!enable_mesh_cache)
|
|
facedir = wallmounted_to_facedir[facedir];
|
|
} else if (f->param_type_2 == CPT2_DEGROTATE ||
|
|
f->param_type_2 == CPT2_COLORED_DEGROTATE) {
|
|
degrotate = n.getDegRotate(nodedef);
|
|
}
|
|
|
|
if (!data->m_smooth_lighting && f->mesh_ptr[facedir] && !degrotate) {
|
|
// use cached meshes
|
|
private_mesh = false;
|
|
mesh = f->mesh_ptr[facedir];
|
|
} else if (f->mesh_ptr[0]) {
|
|
// no cache, clone and rotate mesh
|
|
private_mesh = true;
|
|
mesh = cloneMesh(f->mesh_ptr[0]);
|
|
if (facedir)
|
|
rotateMeshBy6dFacedir(mesh, facedir);
|
|
else if (degrotate)
|
|
rotateMeshXZby(mesh, 1.5f * degrotate);
|
|
recalculateBoundingBox(mesh);
|
|
meshmanip->recalculateNormals(mesh, true, false);
|
|
} else
|
|
return;
|
|
|
|
int mesh_buffer_count = mesh->getMeshBufferCount();
|
|
for (int j = 0; j < mesh_buffer_count; j++) {
|
|
useTile(j);
|
|
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
|
|
video::S3DVertex *vertices = (video::S3DVertex *)buf->getVertices();
|
|
int vertex_count = buf->getVertexCount();
|
|
|
|
if (data->m_smooth_lighting) {
|
|
// Mesh is always private here. So the lighting is applied to each
|
|
// vertex right here.
|
|
for (int k = 0; k < vertex_count; k++) {
|
|
video::S3DVertex &vertex = vertices[k];
|
|
vertex.Color = blendLightColor(vertex.Pos, vertex.Normal);
|
|
vertex.Pos += origin;
|
|
}
|
|
collector->append(tile, vertices, vertex_count,
|
|
buf->getIndices(), buf->getIndexCount());
|
|
} else {
|
|
// Don't modify the mesh, it may not be private here.
|
|
// Instead, let the collector process colors, etc.
|
|
collector->append(tile, vertices, vertex_count,
|
|
buf->getIndices(), buf->getIndexCount(), origin,
|
|
color, f->light_source);
|
|
}
|
|
}
|
|
if (private_mesh)
|
|
mesh->drop();
|
|
}
|
|
|
|
// also called when the drawtype is known but should have been pre-converted
|
|
void MapblockMeshGenerator::errorUnknownDrawtype()
|
|
{
|
|
infostream << "Got drawtype " << f->drawtype << std::endl;
|
|
FATAL_ERROR("Unknown drawtype");
|
|
}
|
|
|
|
void MapblockMeshGenerator::drawNode()
|
|
{
|
|
// skip some drawtypes early
|
|
switch (f->drawtype) {
|
|
case NDT_NORMAL: // Drawn by MapBlockMesh
|
|
case NDT_AIRLIKE: // Not drawn at all
|
|
case NDT_LIQUID: // Drawn by MapBlockMesh
|
|
return;
|
|
default:
|
|
break;
|
|
}
|
|
origin = intToFloat(p, BS);
|
|
if (data->m_smooth_lighting)
|
|
getSmoothLightFrame();
|
|
else
|
|
light = LightPair(getInteriorLight(n, 1, nodedef));
|
|
switch (f->drawtype) {
|
|
case NDT_FLOWINGLIQUID: drawLiquidNode(); break;
|
|
case NDT_GLASSLIKE: drawGlasslikeNode(); break;
|
|
case NDT_GLASSLIKE_FRAMED: drawGlasslikeFramedNode(); break;
|
|
case NDT_ALLFACES: drawAllfacesNode(); break;
|
|
case NDT_TORCHLIKE: drawTorchlikeNode(); break;
|
|
case NDT_SIGNLIKE: drawSignlikeNode(); break;
|
|
case NDT_PLANTLIKE: drawPlantlikeNode(); break;
|
|
case NDT_PLANTLIKE_ROOTED: drawPlantlikeRootedNode(); break;
|
|
case NDT_FIRELIKE: drawFirelikeNode(); break;
|
|
case NDT_FENCELIKE: drawFencelikeNode(); break;
|
|
case NDT_RAILLIKE: drawRaillikeNode(); break;
|
|
case NDT_NODEBOX: drawNodeboxNode(); break;
|
|
case NDT_MESH: drawMeshNode(); break;
|
|
default: errorUnknownDrawtype(); break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
TODO: Fix alpha blending for special nodes
|
|
Currently only the last element rendered is blended correct
|
|
*/
|
|
void MapblockMeshGenerator::generate()
|
|
{
|
|
for (p.Z = 0; p.Z < MAP_BLOCKSIZE; p.Z++)
|
|
for (p.Y = 0; p.Y < MAP_BLOCKSIZE; p.Y++)
|
|
for (p.X = 0; p.X < MAP_BLOCKSIZE; p.X++) {
|
|
n = data->m_vmanip.getNodeNoEx(blockpos_nodes + p);
|
|
f = &nodedef->get(n);
|
|
drawNode();
|
|
}
|
|
}
|
|
|
|
void MapblockMeshGenerator::renderSingle(content_t node, u8 param2)
|
|
{
|
|
p = {0, 0, 0};
|
|
n = MapNode(node, 0xff, param2);
|
|
f = &nodedef->get(n);
|
|
drawNode();
|
|
}
|