mirror of https://github.com/minetest/minetest.git
230 lines
6.2 KiB
C++
230 lines
6.2 KiB
C++
/*
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Minetest-c55
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Copyright (C) 2010-2011 kwolekr, Ryan Kwolek <kwolekr2@cs.scranton.edu>
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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 "biome.h"
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#include "nodedef.h"
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#include "map.h" //for ManualMapVoxelManipulator
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#include "main.h"
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#define BT_NONE 0
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#define BT_OCEAN 1
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#define BT_LAKE 2
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#define BT_SBEACH 3
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#define BT_GBEACH 4
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#define BT_PLAINS 5
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#define BT_HILLS 6
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#define BT_EXTREMEHILLS 7
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#define BT_MOUNTAINS 8
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#define BT_DESERT 9
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#define BT_DESERTHILLS 10
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#define BT_HELL 11
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#define BT_AETHER 12
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#define BT_BTMASK 0x3F
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#define BTF_SNOW 0x40
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#define BTF_FOREST 0x80
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#define BGFREQ_1 ( 0.40)
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#define BGFREQ_2 (BGFREQ_1 + 0.05)
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#define BGFREQ_3 (BGFREQ_2 + 0.08)
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#define BGFREQ_4 (BGFREQ_3 + 0.35)
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#define BGFREQ_5 (BGFREQ_4 + 0.18)
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//BGFREQ_5 is not checked as an upper bound; it ought to sum up to 1.00, but it's okay if it doesn't.
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/*float bg1_temps[] = {0.0};
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int bg1_biomes[] = {BT_OCEAN};
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float bg2_temps[] = {10.0};
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int bg2_biomes[] = {BT_GBEACH, BT_SBEACH};
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float bg3_temps[] = {30.0, 40.0};
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int bg3_biomes[] = {BT_HILLS, BT_EXTREMEHILLS, BT_MOUNTAINS};
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float bg4_temps[] = {25.0, 30.0, 35.0, 40.0};
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int bg4_biomes[] = {BT_HILLS, BT_EXTREMEHILLS, BT_MOUNTAINS, BT_DESERT, BT_DESERTHILLS};
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float bg5_temps[] = {5.0, 40.0};
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int bg5_biomes[] = {BT_LAKE, BT_PLAINS, BT_DESERT};*/
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BiomeDefManager::BiomeDefManager(IGameDef *gamedef) {
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this->m_gamedef = gamedef;
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this->ndef = gamedef->ndef();
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//addDefaultBiomes(); //can't do this in the ctor, too early
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}
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BiomeDefManager::~BiomeDefManager() {
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for (int i = 0; i != bgroups.size(); i++)
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delete bgroups[i];
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}
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void BiomeDefManager::addBiome() {
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}
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NoiseParams npmtdef = {0.0, 20.0, v3f(250., 250., 250.), 82341, 5, 0.6};
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void BiomeDefManager::addDefaultBiomes() {
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std::vector<Biome *> *bgroup;
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Biome *b;
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//bgroup = new std::vector<Biome *>;
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b = new Biome;
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b->name = "Default";
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b->n_top = MapNode(ndef->getId("mapgen_stone"));
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b->n_filler = b->n_top;
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b->ntopnodes = 0;
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b->height_min = -MAP_GENERATION_LIMIT;
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b->height_max = MAP_GENERATION_LIMIT;
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b->heat_min = FLT_MIN;
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b->heat_max = FLT_MAX;
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b->humidity_min = FLT_MIN;
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b->humidity_max = FLT_MAX;
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b->np = &npmtdef;
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biome_default = b;
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//bgroup->push_back(b);
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//bgroups.push_back(bgroup);
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}
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Biome *BiomeDefManager::getBiome(float bgfreq, float heat, float humidity) {
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std::vector<Biome *> bgroup;
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Biome *b;
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int i;
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int ngroups = bgroup_freqs.size();
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if (!ngroups)
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return biome_default;
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for (i = 0; (i != ngroups - 1) && (bgfreq > bgroup_freqs[i]); i++);
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bgroup = *(bgroups[i]);
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int nbiomes = bgroup.size();
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if (!nbiomes)
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return biome_default;
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for (i = 0; i != nbiomes - 1; i++) {
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b = bgroup[i];
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if (heat >= b->heat_min && heat <= b->heat_max &&
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humidity >= b->humidity_min && humidity <= b->humidity_max)
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return b;
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}
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return biome_default;
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}
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//////////////////////////// [ Generic biome ] ////////////////////////////////
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int Biome::getSurfaceHeight(float noise_terrain) {
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return np->offset + np->scale * noise_terrain;
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}
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void Biome::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
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//printf("(%d, %d): %f\n", x, z, mg->map_terrain[z * mg->ystride + x]);
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//int surfaceh = 4;
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int surfaceh = np->offset + np->scale * mg->map_terrain[(z - mg->node_min.Z) * 80 /*THIS IS TEMPORARY mg->ystride*/ + (x - mg->node_min.X)];
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//printf("gen column %f\n", );
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int y = y1;
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int i = mg->vmanip->m_area.index(x, y, z); //z * mg->zstride + x + (y - mg->vmanip->m_area.MinEdge.Y) * mg->ystride;
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for (; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = n_filler;
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for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = n_top;
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for (; y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = mg->n_air;
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}
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///////////////////////////// [ Ocean biome ] /////////////////////////////////
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void BiomeOcean::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
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int y, i = 0;
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int surfaceh = np->offset + np->scale * mg->map_terrain[z * mg->ystride + x];
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i = z * mg->zstride + x;
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for (y = y1; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = n_filler;
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for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = n_top;
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for (; y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = mg->n_air;
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}
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///////////////////////////// [ Nether biome ] /////////////////////////////////
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int BiomeHell::getSurfaceHeight(float noise_terrain) {
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return np->offset + np->scale * noise_terrain;
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}
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void BiomeHell::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
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int y, i = 0;
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int surfaceh = np->offset + np->scale * mg->map_terrain[z * mg->ystride + x];
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i = z * mg->zstride + x;
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for (y = y1; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = n_filler;
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for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = n_top;
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for (; y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = mg->n_air;
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}
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///////////////////////////// [ Aether biome ] ////////////////////////////////
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/////////////////////////// [ Superflat biome ] ///////////////////////////////
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int BiomeSuperflat::getSurfaceHeight(float noise_terrain) {
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return ntopnodes;
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}
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void BiomeSuperflat::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
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int y, i = 0;
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int surfaceh = ntopnodes;
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i = z * mg->zstride + x;
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for (y = y1; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = n_filler;
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for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = n_top;
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for (; y <= y2; y++, i += mg->ystride)
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mg->vmanip->m_data[i] = mg->n_air;
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}
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