src/server/schematic.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include "server/schematic.h"
   4 #include "terrain.h"
   5
   6 void schematic_load(List *schematic, const char *path, SchematicMapping *mappings, size_t num_mappings)
   7 {
   8         list_ini(schematic);
   9
  10         FILE *file = fopen(path, "r");
  11         if (!file) {
  12                 fprintf(stderr, "[warning] failed to open schematic %s\n", path);
  13                 return;
  14         }
  15
  16         char *line = NULL;
  17         size_t siz = 0;
  18         ssize_t length;
  19         int count = 0;
  20
  21         // getline is POSIX 2008, so we can use it
  22         while ((length = getline(&line, &siz, file)) > 0) {
  23                 count++;
  24
  25                 if (*line == '#')
  26                         continue;
  27
  28                 SchematicNode *node = malloc(sizeof *node);
  29                 node->data = (Blob) {0, NULL};
  30
  31                 v3s32 color;
  32                 if (sscanf(line, "%d %d %d %2x%2x%2x",
  33                                 &node->pos.x, &node->pos.z, &node->pos.y,
  34                                 &color.x, &color.y, &color.z) != 6) {
  35                         fprintf(stderr, "[warning] syntax error in schematic %s in line %d: %s\n",
  36                                 path, count, line);
  37                         free(node);
  38                         continue;
  39                 }
  40
  41                 SchematicMapping *mapping = NULL;
  42                 for (size_t i = 0; i < num_mappings; i++)
  43                         if (v3s32_equals(color, mappings[i].color)) {
  44                                 mapping = &mappings[i];
  45                                 break;
  46                         }
  47
  48                 if (!mapping) {
  49                         fprintf(stderr, "[warning] color not mapped to node in schematic %s in line %d: %02x%02x%02x\n",
  50                                 path, count, color.x, color.y, color.z);
  51                         free(node);
  52                         continue;
  53                 }
  54
  55                 node->type = mapping->type;
  56
  57                 if (mapping->use_color)
  58                         ColorData_write(&node->data, &(ColorData) {{
  59                                 (f32) color.x / 0xFF,
  60                                 (f32) color.y / 0xFF,
  61                                 (f32) color.z / 0xFF,
  62                         }});
  63
  64                 list_apd(schematic, node);
  65         }
  66
  67         if (line)
  68                 free(line);
  69
  70         fclose(file);
  71 }
  72
  73 void schematic_place(List *schematic, v3s32 pos, TerrainGenStage tgs, List *changed_chunks)
  74 {
  75         LIST_ITERATE(schematic, list_node) {
  76                 SchematicNode *node = list_node->dat;
  77
  78                 server_terrain_gen_node(
  79                         v3s32_add(pos, node->pos),
  80                         terrain_node_create(node->type, node->data),
  81                         tgs, changed_chunks);
  82         }
  83 }
  84
  85 static void delete_schematic_node(SchematicNode *node)
  86 {
  87         Blob_free(&node->data);
  88         free(node);
  89 }
  90
  91 void schematic_delete(List *schematic)
  92 {
  93         list_clr(schematic, (void *) &delete_schematic_node, NULL, NULL);
  94 }