src/server/schematic.c

   1 #include <getline/getline.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include "server/schematic.h"
   5 #include "server/server_node.h"
   6 #include "terrain.h"
   7
   8 void schematic_load(List *schematic, const char *path, SchematicMapping *mappings, size_t num_mappings)
   9 {
  10         list_ini(schematic);
  11
  12         FILE *file = fopen(path, "r");
  13         if (!file) {
  14                 fprintf(stderr, "[warning] failed to open schematic %s\n", path);
  15                 return;
  16         }
  17
  18         char *line = NULL;
  19         size_t siz = 0;
  20         ssize_t length;
  21         int count = 0;
  22
  23         // getline is POSIX 2008, so we can use it
  24         while ((length = getline(&line, &siz, file)) > 0) {
  25                 count++;
  26
  27                 if (*line == '#')
  28                         continue;
  29
  30                 SchematicNode *node = malloc(sizeof *node);
  31
  32                 v3s32 color;
  33                 if (sscanf(line, "%d %d %d %2x%2x%2x",
  34                                 &node->pos.x, &node->pos.z, &node->pos.y,
  35                                 &color.x, &color.y, &color.z) != 6) {
  36                         fprintf(stderr, "[warning] syntax error in schematic %s in line %d: %s\n",
  37                                 path, count, line);
  38                         free(node);
  39                         continue;
  40                 }
  41
  42                 SchematicMapping *mapping = NULL;
  43                 for (size_t i = 0; i < num_mappings; i++)
  44                         if (v3s32_equals(color, mappings[i].color)) {
  45                                 mapping = &mappings[i];
  46                                 break;
  47                         }
  48
  49                 if (!mapping) {
  50                         fprintf(stderr, "[warning] color not mapped to node in schematic %s in line %d: %02x%02x%02x\n",
  51                                 path, count, color.x, color.y, color.z);
  52                         free(node);
  53                         continue;
  54                 }
  55
  56                 node->node = mapping->use_color
  57                         ? server_node_create_color(mapping->type, (v3f32) {
  58                                 (f32) color.x / 0xFF,
  59                                 (f32) color.y / 0xFF,
  60                                 (f32) color.z / 0xFF,
  61                         }) : server_node_create(mapping->type);
  62
  63                 list_apd(schematic, node);
  64         }
  65
  66         if (line)
  67                 free(line);
  68
  69         fclose(file);
  70 }
  71
  72 void schematic_place(List *schematic, v3s32 pos, TerrainGenStage tgs, List *changed_chunks)
  73 {
  74         LIST_ITERATE(schematic, list_node) {
  75                 SchematicNode *node = list_node->dat;
  76
  77                 server_terrain_gen_node(
  78                         v3s32_add(pos, node->pos),
  79                         server_node_copy(node->node),
  80                         tgs, changed_chunks);
  81         }
  82 }
  83
  84 static void delete_schematic_node(SchematicNode *node)
  85 {
  86         server_node_delete(&node->node);
  87         free(node);
  88 }
  89
  90 void schematic_delete(List *schematic)
  91 {
  92         list_clr(schematic, &delete_schematic_node, NULL, NULL);
  93 }