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+/*
+Minetest-c55
+Copyright (C) 2010-2011 kwolekr, Ryan Kwolek <kwolekr2@cs.scranton.edu>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "biome.h"
+#include "nodedef.h"
+#include "map.h" //for ManualMapVoxelManipulator
+#include "main.h"
+
+#define BT_NONE 0
+#define BT_OCEAN 1
+#define BT_LAKE 2
+#define BT_SBEACH 3
+#define BT_GBEACH 4
+#define BT_PLAINS 5
+#define BT_HILLS 6
+#define BT_EXTREMEHILLS 7
+#define BT_MOUNTAINS 8
+#define BT_DESERT 9
+#define BT_DESERTHILLS 10
+#define BT_HELL 11
+#define BT_AETHER 12
+
+#define BT_BTMASK 0x3F
+
+#define BTF_SNOW 0x40
+#define BTF_FOREST 0x80
+
+#define BGFREQ_1 ( 0.40)
+#define BGFREQ_2 (BGFREQ_1 + 0.05)
+#define BGFREQ_3 (BGFREQ_2 + 0.08)
+#define BGFREQ_4 (BGFREQ_3 + 0.35)
+#define BGFREQ_5 (BGFREQ_4 + 0.18)
+//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.
+
+
+/*float bg1_temps[] = {0.0};
+int bg1_biomes[] = {BT_OCEAN};
+
+float bg2_temps[] = {10.0};
+int bg2_biomes[] = {BT_GBEACH, BT_SBEACH};
+
+float bg3_temps[] = {30.0, 40.0};
+int bg3_biomes[] = {BT_HILLS, BT_EXTREMEHILLS, BT_MOUNTAINS};
+
+float bg4_temps[] = {25.0, 30.0, 35.0, 40.0};
+int bg4_biomes[] = {BT_HILLS, BT_EXTREMEHILLS, BT_MOUNTAINS, BT_DESERT, BT_DESERTHILLS};
+
+float bg5_temps[] = {5.0, 40.0};
+int bg5_biomes[] = {BT_LAKE, BT_PLAINS, BT_DESERT};*/
+
+
+BiomeDefManager::BiomeDefManager(IGameDef *gamedef) {
+ this->m_gamedef = gamedef;
+ this->ndef = gamedef->ndef();
+
+ //addDefaultBiomes(); //can't do this in the ctor, too early
+}
+
+
+BiomeDefManager::~BiomeDefManager() {
+ for (int i = 0; i != bgroups.size(); i++)
+ delete bgroups[i];
+}
+
+
+void BiomeDefManager::addBiome() {
+
+}
+
+
+NoiseParams npmtdef = {0.0, 20.0, v3f(250., 250., 250.), 82341, 5, 0.6};
+
+void BiomeDefManager::addDefaultBiomes() {
+ std::vector<Biome *> *bgroup;
+ Biome *b;
+
+ //bgroup = new std::vector<Biome *>;
+
+ b = new Biome;
+ b->name = "Default";
+ b->n_top = MapNode(ndef->getId("mapgen_stone"));
+ b->n_filler = b->n_top;
+ b->ntopnodes = 0;
+ b->height_min = -MAP_GENERATION_LIMIT;
+ b->height_max = MAP_GENERATION_LIMIT;
+ b->heat_min = FLT_MIN;
+ b->heat_max = FLT_MAX;
+ b->humidity_min = FLT_MIN;
+ b->humidity_max = FLT_MAX;
+ b->np = &npmtdef;
+ biome_default = b;
+
+ //bgroup->push_back(b);
+ //bgroups.push_back(bgroup);
+}
+
+
+Biome *BiomeDefManager::getBiome(float bgfreq, float heat, float humidity) {
+ std::vector<Biome *> bgroup;
+ Biome *b;
+ int i;
+
+ int ngroups = bgroup_freqs.size();
+ if (!ngroups)
+ return biome_default;
+ for (i = 0; (i != ngroups - 1) && (bgfreq > bgroup_freqs[i]); i++);
+ bgroup = *(bgroups[i]);
+
+ int nbiomes = bgroup.size();
+ if (!nbiomes)
+ return biome_default;
+ for (i = 0; i != nbiomes - 1; i++) {
+ b = bgroup[i];
+ if (heat >= b->heat_min && heat <= b->heat_max &&
+ humidity >= b->humidity_min && humidity <= b->humidity_max)
+ return b;
+ }
+
+ return biome_default;
+}
+
+
+//////////////////////////// [ Generic biome ] ////////////////////////////////
+
+
+int Biome::getSurfaceHeight(float noise_terrain) {
+ return np->offset + np->scale * noise_terrain;
+}
+
+
+void Biome::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
+ //printf("(%d, %d): %f\n", x, z, mg->map_terrain[z * mg->ystride + x]);
+
+ //int surfaceh = 4;
+ 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)];
+ //printf("gen column %f\n", );
+ int y = y1;
+ int i = mg->vmanip->m_area.index(x, y, z); //z * mg->zstride + x + (y - mg->vmanip->m_area.MinEdge.Y) * mg->ystride;
+ for (; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = n_filler;
+ for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = n_top;
+ for (; y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = mg->n_air;
+}
+
+
+
+///////////////////////////// [ Ocean biome ] /////////////////////////////////
+
+
+
+void BiomeOcean::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
+ int y, i = 0;
+
+ int surfaceh = np->offset + np->scale * mg->map_terrain[z * mg->ystride + x];
+
+ i = z * mg->zstride + x;
+ for (y = y1; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = n_filler;
+ for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = n_top;
+ for (; y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = mg->n_air;
+}
+
+
+///////////////////////////// [ Nether biome ] /////////////////////////////////
+
+
+int BiomeHell::getSurfaceHeight(float noise_terrain) {
+ return np->offset + np->scale * noise_terrain;
+}
+
+
+void BiomeHell::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
+ int y, i = 0;
+
+ int surfaceh = np->offset + np->scale * mg->map_terrain[z * mg->ystride + x];
+
+ i = z * mg->zstride + x;
+ for (y = y1; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = n_filler;
+ for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = n_top;
+ for (; y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = mg->n_air;
+}
+
+
+///////////////////////////// [ Aether biome ] ////////////////////////////////
+
+/////////////////////////// [ Superflat biome ] ///////////////////////////////
+
+
+int BiomeSuperflat::getSurfaceHeight(float noise_terrain) {
+ return ntopnodes;
+}
+
+
+void BiomeSuperflat::genColumn(Mapgen *mg, int x, int z, int y1, int y2) {
+ int y, i = 0;
+
+ int surfaceh = ntopnodes;
+
+ i = z * mg->zstride + x;
+ for (y = y1; y <= surfaceh - ntopnodes && y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = n_filler;
+ for (; y <= surfaceh && y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = n_top;
+ for (; y <= y2; y++, i += mg->ystride)
+ mg->vmanip->m_data[i] = mg->n_air;
+}
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