diff options
Diffstat (limited to 'engines/glk/hugo/hugo.cpp')
| -rw-r--r-- | engines/glk/hugo/hugo.cpp | 177 |
1 files changed, 172 insertions, 5 deletions
diff --git a/engines/glk/hugo/hugo.cpp b/engines/glk/hugo/hugo.cpp index 543da72a14..c15a843fbf 100644 --- a/engines/glk/hugo/hugo.cpp +++ b/engines/glk/hugo/hugo.cpp @@ -34,7 +34,7 @@ Hugo::Hugo(OSystem *syst, const GlkGameDescription &gameDesc) : GlkAPI(syst, gam // hemedia mchannel(nullptr), schannel(nullptr), // hemisc - game_version(0), object_size(24), game(nullptr), script(nullptr), save(nullptr), + game_version(0), object_size(24), game(nullptr), script(nullptr), playback(nullptr), record(nullptr), io(nullptr), ioblock('\0'), ioerror('\0'), codestart(0), objtable(0), eventtable(0), proptable(0), arraytable(0), dicttable(0), syntable(0), initaddr(0), mainaddr(0), parseaddr(0), parseerroraddr(0), @@ -148,14 +148,181 @@ void Hugo::runGame() { hugo_closefiles(); } -Common::Error Hugo::loadGameData(strid_t file) { - // TODO +Common::Error Hugo::loadGameData(strid_t save) { + char testid[3], testserial[9]; + int lbyte, hbyte; + int j; + unsigned int k, undosize; + long i; + + /* Check ID */ + testid[0] = (char)hugo_fgetc(save); + testid[1] = (char)hugo_fgetc(save); + testid[2] = '\0'; + if (hugo_ferror(save)) goto RestoreError; + + if (strcmp(testid, id)) { + GUIErrorMessage("Incorrect save file."); + goto RestoreError; + } + + /* Check serial number */ + if (!hugo_fgets(testserial, 9, save)) goto RestoreError; + if (strcmp(testserial, serial)) + { + GUIErrorMessage("Save file created by different version."); + goto RestoreError; + } + + /* Restore variables */ + for (k=0; k<MAXGLOBALS+MAXLOCALS; k++) + { + if ((lbyte = hugo_fgetc(save))==EOF || (hbyte = hugo_fgetc(save))==EOF) + goto RestoreError; + var[k] = lbyte + hbyte * 256; + } + + /* Restore objtable and above */ + + if (hugo_fseek(game, objtable*16L, SEEK_SET)) goto RestoreError; + i = 0; + + while (i<codeend-(long)(objtable*16L)) + { + if ((hbyte = hugo_fgetc(save))==EOF && hugo_ferror(save)) goto RestoreError; + + if (hbyte==0) + { + if ((lbyte = hugo_fgetc(save))==EOF && hugo_ferror(save)) goto RestoreError; + SETMEM(objtable*16L+i, (unsigned char)lbyte); + i++; + + /* Skip byte in game file */ + if (hugo_fgetc(game)==EOF) goto RestoreError; + } + else + { + while (hbyte--) + { + /* Get unchanged game file byte */ + if ((lbyte = hugo_fgetc(game))==EOF) goto RestoreError; + SETMEM(objtable*16L+i, (unsigned char)lbyte); + i++; + } + } + } + + /* Restore undo data */ + if ((lbyte = hugo_fgetc(save))==EOF || (hbyte = hugo_fgetc(save))==EOF) + goto RestoreError; + undosize = lbyte + hbyte*256; + + /* We can only restore undo data if it was saved by a port with + the same MAXUNDO as us */ + if (undosize==MAXUNDO) + { + for (k=0; k<MAXUNDO; k++) + { + for (j=0; j<5; j++) + { + if ((lbyte = hugo_fgetc(save))==EOF || (hbyte = hugo_fgetc(save))==EOF) + goto RestoreError; + undostack[k][j] = lbyte + hbyte*256; + } + } + if ((lbyte = hugo_fgetc(save))==EOF || (hbyte = hugo_fgetc(save))==EOF) goto RestoreError; + undoptr = lbyte + hbyte*256; + if ((lbyte = hugo_fgetc(save))==EOF || (hbyte = hugo_fgetc(save))==EOF) goto RestoreError; + undoturn = lbyte + hbyte*256; + if ((lbyte = hugo_fgetc(save))==EOF || (hbyte = hugo_fgetc(save))==EOF) goto RestoreError; + undoinvalid = (unsigned char)lbyte, undorecord = (unsigned char)hbyte; + } + else undoinvalid = true; + return Common::kNoError; + +RestoreError: + return Common::kReadingFailed; } -Common::Error Hugo::saveGameData(strid_t file, const Common::String &desc) { - // TODO +Common::Error Hugo::saveGameData(strid_t save, const Common::String &desc) { + int c, j; + int lbyte, hbyte; + long i; + int samecount = 0; + + /* Write ID */ + if (hugo_fputc(id[0], save) == EOF || hugo_fputc(id[1], save) == EOF) goto SaveError; + + /* Write serial number */ + if (hugo_fputs(serial, save) == EOF) goto SaveError; + + /* Save variables */ + for (c = 0; c<MAXGLOBALS + MAXLOCALS; c++) + { + hbyte = (unsigned int)var[c] / 256; + lbyte = (unsigned int)var[c] - hbyte * 256; + if (hugo_fputc(lbyte, save) == EOF || hugo_fputc(hbyte, save) == EOF) goto SaveError; + } + + /* Save objtable to end of code space */ + + if (hugo_fseek(game, objtable * 16L, SEEK_SET)) goto SaveError; + + for (i = 0; i <= codeend - (long)(objtable * 16L); i++) + { + if ((lbyte = hugo_fgetc(game)) == EOF) goto SaveError; + hbyte = MEM(objtable * 16L + i); + + /* If memory same as original game file */ + if (lbyte == hbyte && samecount<255) samecount++; + + /* If memory differs (or samecount exceeds 1 byte) */ + else + { + if (samecount) + if (hugo_fputc(samecount, save) == EOF) goto SaveError; + + if (lbyte != hbyte) + { + if (hugo_fputc(0, save) == EOF) goto SaveError; + if (hugo_fputc(hbyte, save) == EOF) goto SaveError; + samecount = 0; + } + else samecount = 1; + } + } + if (samecount) + if (hugo_fputc(samecount, save) == EOF) goto SaveError; + + /* Save undo data */ + + /* Save the number of turns in this port's undo stack */ + hbyte = (unsigned int)MAXUNDO / 256; + lbyte = (unsigned int)MAXUNDO - hbyte * 256; + if (hugo_fputc(lbyte, save) == EOF || hugo_fputc(hbyte, save) == EOF) + goto SaveError; + for (c = 0; c<MAXUNDO; c++) + { + for (j = 0; j<5; j++) + { + hbyte = (unsigned int)undostack[c][j] / 256; + lbyte = (unsigned int)undostack[c][j] - hbyte * 256; + if (hugo_fputc(lbyte, save) == EOF || hugo_fputc(hbyte, save) == EOF) + goto SaveError; + } + } + if (hugo_fputc(undoptr - (undoptr / 256) * 256, save) == EOF || hugo_fputc(undoptr / 256, save) == EOF) + goto SaveError; + if (hugo_fputc(undoturn - (undoturn / 256) * 256, save) == EOF || hugo_fputc(undoturn / 256, save) == EOF) + goto SaveError; + if (hugo_fputc(undoinvalid, save) == EOF || hugo_fputc(undorecord, save) == EOF) + goto SaveError; + return Common::kNoError; + +SaveError: + return Common::kWritingFailed; } } // End of namespace Hugo |