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/* |
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* static char *rcsid_image_c = |
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* "$Id: image.C,v 1.4 2006-09-04 11:07:59 root Exp $"; |
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*/ |
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|
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/* |
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CrossFire, A Multiplayer game for X-windows |
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|
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Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
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Copyright (C) 1992 Frank Tore Johansen |
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|
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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 General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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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 General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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|
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The maintainer of this code can be reached at crossfire-devel@real-time.com |
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*/ |
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|
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|
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#include <global.h> |
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#include <stdio.h> |
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|
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New_Face *new_faces; |
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|
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/* bmappair and xbm are used when looking for the image id numbers |
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* of a face by name. xbm is sorted alphabetically so that bsearch |
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* can be used to quickly find the entry for a name. the number is |
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* then an index into the new_faces array. |
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* This data is redundant with new_face information - the difference |
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* is that this data gets sorted, and that doesn't necessarily happen |
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* with the new_face data - when accessing new_face[some number], |
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* that some number corresponds to the face at that number - for |
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* xbm, it may not. At current time, these do in fact match because |
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* the bmaps file is created in a sorted order. |
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*/ |
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|
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struct bmappair |
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{ |
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char *name; |
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unsigned int number; |
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}; |
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|
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void free (bmappair *); // guard to catch free when delete should be used |
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|
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static struct bmappair *xbm=NULL; |
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|
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/* Following can just as easily be pointers, but |
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* it is easier to keep them like this. |
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*/ |
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New_Face *blank_face, *dark_faces[3], *empty_face, *smooth_face; |
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|
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|
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/* nroffiles is the actual number of bitmaps defined. |
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* nrofpixmaps is the number of bitmaps loaded. With |
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* the automatic generation of the bmaps file, this is now equal |
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* to nroffiles. |
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* |
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* The xbm array (which contains name and number information, and |
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* is then sorted) contains nroffiles entries. the xbm_names |
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* array (which is used for converting the numeric face to |
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* a name) contains nrofpixmaps entries. |
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*/ |
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static int nroffiles = 0; |
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int nrofpixmaps = 0; |
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|
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/** |
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* id is the face to smooth, smooth is the 16x2 face used to smooth id. |
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*/ |
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struct smoothing : zero_initialised |
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{ |
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uint16 id; |
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uint16 smooth; |
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}; |
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|
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void free (smoothing *); // guard to catch free when delete should be used |
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|
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/** |
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* Contains all defined smoothing entries. smooth is an array of nrofsmooth |
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* entries. It is sorted by smooth[].id. |
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*/ |
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static struct smoothing *smooth=NULL; |
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int nrofsmooth=0; |
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|
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/* the only thing this table is used for now is to |
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* translate the colorname in the magicmap field of the |
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* face into a numeric index that is then sent to the |
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* client for magic map commands. The order of this table |
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* must match that of the NDI colors in include/newclient.h. |
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*/ |
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static const char *const colorname[] = { |
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"black", /* 0 */ |
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"white", /* 1 */ |
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"blue", /* 2 */ |
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"red", /* 3 */ |
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"orange", /* 4 */ |
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"light_blue", /* 5 */ |
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"dark_orange", /* 6 */ |
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"green", /* 7 */ |
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"light_green", /* 8 */ |
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"grey", /* 9 */ |
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"brown", /* 10 */ |
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"yellow", /* 11 */ |
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"khaki" /* 12 */ |
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}; |
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|
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static int compar (const struct bmappair *a, const struct bmappair *b) { |
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return strcmp (a->name, b->name); |
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} |
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static int compar_smooth (const struct smoothing *a, const struct smoothing *b) { |
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if (a->id<b->id) |
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return -1; |
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if (b->id<a->id) |
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return 1; |
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return 0; |
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} |
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|
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|
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/* |
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* Returns the matching color in the coloralias if found, |
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* 0 otherwise. Note that 0 will actually be black, so there is no |
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* way the calling function can tell if an error occurred or not |
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*/ |
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|
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static uint8 find_color(const char *name) { |
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uint8 i; |
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for(i=0;i<sizeof(colorname)/sizeof(*colorname);i++) |
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if(!strcmp(name,colorname[i])) |
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return i; |
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LOG(llevError,"Unknown color: %s\n",name); |
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return 0; |
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} |
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|
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/* This reads the lib/faces file, getting color and visibility information. |
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* it is called by ReadBmapNames. |
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*/ |
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|
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static void ReadFaceData(void) |
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{ |
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char buf[MAX_BUF], *cp; |
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New_Face *on_face=NULL; |
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FILE *fp; |
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|
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sprintf(buf,"%s/faces", settings.datadir); |
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LOG(llevDebug,"Reading faces from %s...",buf); |
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if ((fp=fopen(buf,"r"))==NULL) { |
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LOG(llevError, "Cannot open faces file %s: %s\n", buf, strerror(errno)); |
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exit(-1); |
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} |
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while (fgets(buf, MAX_BUF, fp)!=NULL) { |
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if (*buf=='#') continue; |
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if (!strncmp(buf,"end",3)) { |
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on_face = NULL; |
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} |
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else if (!strncmp(buf,"face",4)) { |
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int tmp; |
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|
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cp = buf + 5; |
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cp[strlen(cp)-1] = '\0'; /* remove newline */ |
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|
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if ((tmp=FindFace(cp,-1))==-1) { |
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LOG(llevError,"Could not find face %s\n", cp); |
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continue; |
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} |
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on_face = &new_faces[tmp]; |
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on_face->visibility=0; |
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} |
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else if (on_face==NULL) { |
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LOG(llevError,"Got line with no face set: %s\n", buf); |
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} |
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else if (!strncmp(buf,"color_fg",8)) { |
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cp = buf + 9; |
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cp[strlen(cp)-1] = '\0'; |
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if (on_face->magicmap==255) on_face->magicmap=find_color(cp); |
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} |
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else if (!strncmp(buf,"color_bg",8)) { |
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/* ignore it */ |
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} |
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else if (!strncmp(buf,"visibility",10)) { |
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on_face->visibility = atoi(buf + 11); |
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} |
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else if (!strncmp(buf,"magicmap",8)) { |
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cp=buf+9; |
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cp[strlen(cp)-1] = '\0'; |
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on_face->magicmap=find_color(cp); |
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} |
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else if (!strncmp(buf,"is_floor",8)) { |
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int value = atoi(buf+9); |
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if (value) on_face->magicmap |= FACE_FLOOR; |
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} |
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else LOG(llevDebug,"Got unknown line in faces file: %s\n", buf); |
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} |
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LOG(llevDebug,"done\n"); |
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fclose(fp); |
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} |
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|
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/* This reads the bmaps file to get all the bitmap names and |
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* stuff. It only needs to be done once, because it is player |
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* independent (ie, what display the person is on will not make a |
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* difference.) |
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*/ |
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|
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void ReadBmapNames (void) { |
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char buf[MAX_BUF], *p, *q; |
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FILE *fp; |
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int value, nrofbmaps = 0, i; |
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size_t l; |
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|
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bmaps_checksum=0; |
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sprintf (buf,"%s/bmaps", settings.datadir); |
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LOG(llevDebug,"Reading bmaps from %s...",buf); |
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if ((fp=fopen(buf,"r"))==NULL) { |
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LOG(llevError, "Cannot open bmaps file %s: %s\n", buf, strerror(errno)); |
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exit(-1); |
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} |
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|
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/* First count how many bitmaps we have, so we can allocate correctly */ |
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while (fgets (buf, MAX_BUF, fp)!=NULL) |
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if(buf[0] != '#' && buf[0] != '\n' ) |
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nrofbmaps++; |
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rewind(fp); |
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|
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xbm = new bmappair [nrofbmaps]; |
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memset (xbm, 0, sizeof (struct bmappair) * nrofbmaps); |
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|
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while(nroffiles < nrofbmaps && fgets (buf, MAX_BUF, fp) != NULL) { |
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if (*buf == '#') |
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continue; |
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|
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p = (*buf == '\\') ? (buf + 1): buf; |
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if (!(p = strtok (p , " \t")) || !(q = strtok (NULL , " \t\n"))) { |
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LOG(llevDebug,"Warning, syntax error: %s\n", buf); |
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continue; |
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} |
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value = atoi (p); |
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xbm[nroffiles].name = strdup_local(q); |
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|
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/* We need to calculate the checksum of the bmaps file |
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* name->number mapping to send to the client. This does not |
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* need to match what sum or other utility may come up with - |
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* as long as we get the same results on the same real file |
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* data, it does the job as it lets the client know if |
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* the file has the same data or not. |
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*/ |
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ROTATE_RIGHT(bmaps_checksum); |
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bmaps_checksum += value & 0xff; |
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bmaps_checksum &= 0xffffffff; |
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|
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ROTATE_RIGHT(bmaps_checksum); |
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bmaps_checksum += (value >> 8) & 0xff; |
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bmaps_checksum &= 0xffffffff; |
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for (l=0; l<strlen(q); l++) { |
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ROTATE_RIGHT(bmaps_checksum); |
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bmaps_checksum += q[l]; |
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bmaps_checksum &= 0xffffffff; |
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} |
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|
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xbm[nroffiles].number = value; |
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nroffiles++; |
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if(value >= nrofpixmaps) |
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nrofpixmaps = value+1; |
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} |
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fclose(fp); |
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|
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LOG(llevDebug,"done (got %d/%d/%d)\n",nrofpixmaps,nrofbmaps,nroffiles); |
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|
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new_faces = new New_Face [nrofpixmaps]; |
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for (i = 0; i < nrofpixmaps; i++) { |
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new_faces[i].name = ""; |
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new_faces[i].number = i; |
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new_faces[i].visibility=0; |
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new_faces[i].magicmap=255; |
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} |
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for (i = 0; i < nroffiles; i++) { |
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new_faces[xbm[i].number].name = xbm[i].name; |
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} |
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|
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// non-pod datatype, likely not allowed |
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qsort (xbm, nroffiles, sizeof(struct bmappair), (int (*)(const void*, const void*))compar); |
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|
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ReadFaceData(); |
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|
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for (i = 0; i < nrofpixmaps; i++) { |
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if (new_faces[i].magicmap==255) { |
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#if 0 /* Useful for initial debugging, not needed now */ |
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LOG(llevDebug,"Face %s still had default magicmap, resetting to black\n", |
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new_faces[i].name); |
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#endif |
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new_faces[i].magicmap=0; |
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} |
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} |
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/* Actually forcefully setting the colors here probably should not |
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* be done - it could easily create confusion. |
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*/ |
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blank_face = &new_faces[FindFace(BLANK_FACE_NAME, 0)]; |
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blank_face->magicmap = find_color ("khaki") | FACE_FLOOR; |
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|
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empty_face = &new_faces[FindFace(EMPTY_FACE_NAME, 0)]; |
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|
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dark_faces[0] = &new_faces[FindFace (DARK_FACE1_NAME,0)]; |
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dark_faces[1] = &new_faces[FindFace (DARK_FACE2_NAME,0)]; |
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dark_faces[2] = &new_faces[FindFace (DARK_FACE3_NAME,0)]; |
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|
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smooth_face = &new_faces[FindFace(SMOOTH_FACE_NAME,0)]; |
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} |
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|
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/* This returns an the face number of face 'name'. Number is constant |
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* during an invocation, but not necessarily between versions (this |
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* is because the faces are arranged in alphabetical order, so |
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* if a face is removed or added, all faces after that will now |
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* have a different number. |
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* |
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* the parameter error determines behaviour. If a face is |
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* not found, then error is returned. This can be useful if |
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* you want some default face used, or can be set to negative |
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* so that it will be known that the face could not be found |
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* (needed in client, so that it will know to request that image |
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* from the server) |
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*/ |
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int FindFace (const char *name, int error) { |
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struct bmappair *bp, tmp; |
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char *p; |
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|
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if (!name) |
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return error; |
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|
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if ((p = strchr (name, '\n'))) |
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*p = '\0'; |
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|
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tmp.name = (char *)name; |
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bp = (struct bmappair *)bsearch |
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(&tmp, xbm, nroffiles, sizeof(struct bmappair), (int (*)(const void*, const void*))compar); |
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|
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return bp ? bp->number : error; |
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} |
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|
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/* Reads the smooth file to know how to smooth datas. |
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* the smooth file if made of 2 elements lines. |
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* lines starting with # are comment |
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* the first element of line is face to smooth |
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* the next element is the 16x2 faces picture |
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* used for smoothing |
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*/ |
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int ReadSmooth (void) { |
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char buf[MAX_BUF], *p, *q; |
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FILE *fp; |
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int smoothcount = 0; |
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|
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bmaps_checksum=0; |
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sprintf (buf,"%s/smooth", settings.datadir); |
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LOG(llevDebug,"Reading smooth from %s...",buf); |
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if ((fp=fopen(buf,"r"))==NULL) { |
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LOG(llevError, "Cannot open smooth file %s: %s\n", strerror(errno)); |
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exit(-1); |
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} |
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|
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/* First count how many smooth we have, so we can allocate correctly */ |
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while (fgets (buf, MAX_BUF, fp)!=NULL) |
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if(buf[0] != '#' && buf[0] != '\n' ) |
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smoothcount++; |
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rewind(fp); |
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|
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smooth = new smoothing [smoothcount]; |
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|
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while(nrofsmooth < smoothcount && fgets (buf, MAX_BUF, fp)!=NULL) { |
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if (*buf == '#') |
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continue; |
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p=strchr(buf,' '); |
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if (!p) |
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continue; |
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*p='\0'; |
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q=buf; |
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smooth[nrofsmooth].id=FindFace(q,0); |
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q=p+1; |
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smooth[nrofsmooth].smooth=FindFace(q,0); |
| 385 |
nrofsmooth++; |
| 386 |
} |
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fclose(fp); |
| 388 |
|
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LOG(llevDebug,"done (got %d smooth entries)\n",nrofsmooth); |
| 390 |
qsort (smooth, nrofsmooth, sizeof(struct smoothing), (int (*)(const void*, const void*))compar_smooth); |
| 391 |
return nrofsmooth; |
| 392 |
} |
| 393 |
|
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/** |
| 395 |
* Find the smooth face for a given face. |
| 396 |
* |
| 397 |
* @param face the face to find the smoothing face for |
| 398 |
* |
| 399 |
* @param smoothed return value: set to smooth face |
| 400 |
* |
| 401 |
* @return 1=smooth face found, 0=no smooth face found |
| 402 |
*/ |
| 403 |
int FindSmooth (uint16 face, uint16* smoothed) { |
| 404 |
struct smoothing *bp, tmp; |
| 405 |
|
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tmp.id = face; |
| 407 |
bp = (struct smoothing *)bsearch |
| 408 |
(&tmp, smooth, nrofsmooth, sizeof(struct smoothing), (int (*)(const void*, const void*))compar_smooth); |
| 409 |
(*smoothed)=0; |
| 410 |
if (bp) |
| 411 |
(*smoothed)=bp->smooth; |
| 412 |
return bp ? 1 : 0; |
| 413 |
} |
| 414 |
|
| 415 |
/** |
| 416 |
* Deallocates memory allocated by ReadBmapNames() and ReadSmooth(). |
| 417 |
*/ |
| 418 |
void free_all_images(void) |
| 419 |
{ |
| 420 |
int i; |
| 421 |
|
| 422 |
for (i=0; i<nroffiles; i++) |
| 423 |
free(xbm[i].name); |
| 424 |
|
| 425 |
delete [] xbm; |
| 426 |
delete [] new_faces; |
| 427 |
delete [] smooth; |
| 428 |
} |
