diff options
Diffstat (limited to 'src/tool/mapcache.c')
| -rw-r--r-- | src/tool/mapcache.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/tool/mapcache.c b/src/tool/mapcache.c new file mode 100644 index 000000000..c7e6aaa60 --- /dev/null +++ b/src/tool/mapcache.c @@ -0,0 +1,202 @@ +// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
+// For more information, see LICENCE in the main folder
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <malloc.h>
+
+#ifndef _WIN32
+#include <unistd.h>
+#endif
+
+#include "grfio.h"
+
+char grf_list_file[256] = "tools/mapcache/grf_files.txt";
+char map_list_file[256] = "tools/mapcache/map_list.txt";
+char map_cache_file[256] = "map_cache.dat";
+
+#define MAP_NAME_LENGTH 16
+#define NO_WATER 1000000
+
+// Used internally, this structure contains the physical map cells
+struct map_data {
+ short xs;
+ short ys;
+ unsigned char *cells;
+};
+
+// This is the header appended before every compressed map cells info
+struct map_cache_info {
+ char name[MAP_NAME_LENGTH];
+ unsigned short index;
+ short xs;
+ short ys;
+ long len;
+};
+
+// This is the main header found at the very beginning of the file
+struct map_cache_head {
+ short sizeof_header;
+ short sizeof_mapinfo;
+ long filesize;
+ unsigned short map_count;
+} header;
+
+FILE *map_cache_fp;
+
+
+// Read map from GRF's GAT and RSW files
+int read_map(char *name, struct map_data *m)
+{
+ char filename[256];
+ char *gat, *rsw;
+ int water_height;
+ int x, y, xs, ys;
+ struct gat_cell {
+ float height[4];
+ int type;
+ } *p = NULL;
+
+ // Open map GAT
+ sprintf(filename,"data\\%s.gat", name);
+ gat = (char *)grfio_read(filename);
+ if (gat == NULL)
+ return 0;
+
+ // Open map RSW
+ sprintf(filename,"data\\%s.rsw", name);
+ rsw = (char *)grfio_read(filename);
+
+ // Read water height
+ if (rsw) {
+ float temp = *(float*)(rsw+166);
+ water_height = (int)temp;
+ free(rsw);
+ } else
+ water_height = NO_WATER;
+
+ // Read map size and allocate needed memory
+ xs = m->xs = *(int*)(gat+6);
+ ys = m->ys = *(int*)(gat+10);
+ m->cells = (unsigned char *)malloc(xs*ys);
+
+ // Set cell properties
+ for (y = 0; y < ys; y++) {
+ p = (struct gat_cell*)(gat+14+y*xs*20);
+ for (x = 0; x < xs; x++) {
+ if (water_height != NO_WATER && p->type == 0 && (p->height[0] > water_height || p->height[1] > water_height || p->height[2] > water_height || p->height[3] > water_height))
+ m->cells[x+y*xs] = 3; // Cell is 0 (walkable) but under water level, set to 3 (walkable water)
+ else
+ m->cells[x+y*xs] = p->type;
+ p++;
+ }
+ }
+
+ free(gat);
+
+ return 1;
+}
+
+void cache_map(char *name, unsigned short index, struct map_data *m)
+{
+ struct map_cache_info info;
+ unsigned long len;
+ char *write_buf;
+
+ // Create an output buffer twice as big as the uncompressed map... this way we're sure it fits
+ len = m->xs*m->ys*2;
+ write_buf = (char *)malloc(len);
+ // Compress the cells and get the compressed length
+ encode_zip((unsigned char *)write_buf, &len, m->cells, m->xs*m->ys);
+
+ // Fill the map header
+ strncpy(info.name, name, MAP_NAME_LENGTH);
+ info.index = index;
+ info.xs = m->xs;
+ info.ys = m->ys;
+ info.len = len;
+
+ // Append map header then compressed cells at the end of the file
+ fseek(map_cache_fp, header.filesize, SEEK_SET);
+ fwrite(&info, sizeof(struct map_cache_info), 1, map_cache_fp);
+ fwrite(write_buf, 1, len, map_cache_fp);
+ header.map_count++;
+ header.filesize += header.sizeof_mapinfo + len;
+
+ free(write_buf);
+ free(m->cells);
+
+ return;
+}
+
+int main(int argc, char *argv[])
+{
+ FILE *list;
+ char line[1024];
+ struct map_data map;
+ char name[MAP_NAME_LENGTH];
+ unsigned short index = 1;
+
+ if(argc > 1)
+ strcpy(grf_list_file, argv[1]);
+ if(argc > 2)
+ strcpy(map_list_file, argv[2]);
+ if(argc > 3)
+ strcpy(map_cache_file, argv[3]);
+
+ printf("Initializing grfio with %s\n", grf_list_file);
+ grfio_init(grf_list_file);
+
+ printf("Opening map cache: %s\n", map_cache_file);
+ if(!(map_cache_fp = fopen(map_cache_file, "wb"))) {
+ printf("Failure when opening map cache file %s\n", map_cache_file);
+ exit(1);
+ }
+
+ printf("Opening map list: %s\n", map_list_file);
+ if(!(list = fopen(map_list_file, "r"))) {
+ printf("Failure when opening maps list file %s\n", map_list_file);
+ exit(1);
+ }
+
+ // Initialize the main header
+ header.sizeof_header = sizeof(struct map_cache_head);
+ header.sizeof_mapinfo = sizeof(struct map_cache_info);
+ header.map_count = 0;
+ header.filesize = sizeof(struct map_cache_head);
+
+ // Read and process the map list
+ while(fgets(line, 1020, list)){
+
+ if(line[0] == '/' && line[1] == '/')
+ continue;
+
+ if(sscanf(line, "%16s %hu", name, &index) > 0) { // No defines in strings, 16 is hardcoded here
+ printf("Index %d : %s\n", index, name);
+ if(read_map(name, &map))
+ cache_map(name, index, &map);
+ else
+ printf("Map file not found in GRF\n");
+ // If the 2nd argument is omitted at next line, we'll keep last used index + 1
+ index++;
+ } else
+ printf("Skipping incorrect line\n");
+ }
+
+ printf("Closing map list: %s\n", map_list_file);
+ fclose(list);
+
+ printf("Closing map cache: %s\n", map_cache_file);
+ // Write the main header and close the map cache
+ fseek(map_cache_fp, 0, SEEK_SET);
+ fwrite(&header, sizeof(struct map_cache_head), 1, map_cache_fp);
+ fclose(map_cache_fp);
+
+ printf("Finalizing grfio\n");
+ grfio_final();
+
+ printf("%d maps cached\n", header.map_count);
+
+ return 0;
+}
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