diff options
Diffstat (limited to 'sword2')
| -rw-r--r-- | sword2/save_rest.cpp | 171 |
1 files changed, 119 insertions, 52 deletions
diff --git a/sword2/save_rest.cpp b/sword2/save_rest.cpp index 4b041592c2..91955e9172 100644 --- a/sword2/save_rest.cpp +++ b/sword2/save_rest.cpp @@ -56,17 +56,17 @@ //------------------------------------------------------------------------------------ // local function prototypes -void GetPlayerStructures(void); // James27feb97 -void PutPlayerStructures(void); // James27feb97 +static void GetPlayerStructures(void); // James27feb97 +static void PutPlayerStructures(void); // James27feb97 -uint32 SaveData(uint16 slotNo, uint8 *buffer, uint32 bufferSize); -uint32 RestoreData(uint16 slotNo, uint8 *buffer, uint32 bufferSize); +static uint32 SaveData(uint16 slotNo, uint8 *buffer, uint32 bufferSize); +static uint32 RestoreData(uint16 slotNo, uint8 *buffer, uint32 bufferSize); -uint32 CalcChecksum(uint8 *buffer, uint32 size); // James04aug97 +static uint32 CalcChecksum(uint8 *buffer, uint32 size); // James04aug97 //------------------------------------------------------------------------------------ -typedef struct // savegame file header (James06feb97) +typedef struct // savegame file g_header (James06feb97) { uint32 checksum; // sum of all bytes in file, excluding this uint32 char description[SAVE_DESCRIPTION_LEN]; // player's description of savegame @@ -83,9 +83,56 @@ typedef struct // savegame file header (James06feb97) } _savegameHeader; -// savegame consists of header & global variables resource +// savegame consists of g_header & global variables resource -_savegameHeader header; // global because easier to copy to/from player object structures +static _savegameHeader g_header; // global because easier to copy to/from player object structures + +#ifdef SCUMM_BIG_ENDIAN +// Quick macro to make swapping in-place easier to write +#define SWAP32_S(x) x = (int16)SWAP_BYTES_32(x) +#define SWAP32_U(x) x = SWAP_BYTES_32(x) +static void converHeaderEndian(_savegameHeader &header) { + int i; + + // _savegameHeader + SWAP32_U(header.checksum); + SWAP32_U(header.varLength); + SWAP32_U(header.screenId); + SWAP32_U(header.runListId); + SWAP32_U(header.feet_x); + SWAP32_U(header.feet_y); + SWAP32_U(header.music_id); + + // _object_hub + SWAP32_S(header.player_hub.type); + SWAP32_U(header.player_hub.logic_level); + for (i = 0; i < TREE_SIZE; i++) { + SWAP32_U(header.player_hub.logic[i]); + SWAP32_U(header.player_hub.script_id[i]); + SWAP32_U(header.player_hub.script_pc[i]); + } + + // Object_logic + SWAP32_S(header.logic.looping); + SWAP32_S(header.logic.pause); + + // Object_graphic + SWAP32_S(header.graphic.type); + SWAP32_S(header.graphic.anim_resource); + SWAP32_S(header.graphic.anim_pc); + + // Object_mega + SWAP32_S(header.mega.currently_walking); + SWAP32_S(header.mega.walk_pc); + SWAP32_S(header.mega.scale_a); + SWAP32_S(header.mega.scale_b); + SWAP32_S(header.mega.feet_x); + SWAP32_S(header.mega.feet_y); + SWAP32_S(header.mega.current_dir); + SWAP32_S(header.mega.colliding); + SWAP32_S(header.mega.megaset_res); +} +#endif //------------------------------------------------------------------------------------ //------------------------------------------------------------------------------------ @@ -126,7 +173,7 @@ uint32 SaveGame(uint16 slotNo, uint8 *desc) // (James05feb97) uint32 FindBufferSize( void ) { - return (sizeof(header) + res_man.Res_fetch_len(1)); // size of savegame header + size of global variables + return (sizeof(g_header) + res_man.Res_fetch_len(1)); // size of savegame g_header + size of global variables } //------------------------------------------------------------------------------------ @@ -136,41 +183,51 @@ void FillSaveBuffer(mem *buffer, uint32 size, uint8 *desc) uint8 *varsRes; //------------------------------------------------------ - // set up the header + // set up the g_header // 'checksum' gets filled in last of all - sprintf(header.description, "%s", (char*)desc); // player's description of savegame - header.varLength = res_man.Res_fetch_len(1); // length of global variables resource - header.screenId = this_screen.background_layer_id; // resource id of current screen file - header.runListId = LLogic.Return_run_list(); // resource id of current run-list - header.feet_x = this_screen.feet_x; // those scroll position control things - header.feet_y = this_screen.feet_y; // - header.music_id = looping_music_id; // id of currently looping music (or zero) + sprintf(g_header.description, "%s", (char*)desc); // player's description of savegame + g_header.varLength = res_man.Res_fetch_len(1); // length of global variables resource + g_header.screenId = this_screen.background_layer_id; // resource id of current screen file + g_header.runListId = LLogic.Return_run_list(); // resource id of current run-list + g_header.feet_x = this_screen.feet_x; // those scroll position control things + g_header.feet_y = this_screen.feet_y; // + g_header.music_id = looping_music_id; // id of currently looping music (or zero) // object hub - memcpy (&header.player_hub, res_man.Res_open(CUR_PLAYER_ID) + sizeof(_standardHeader), sizeof(_object_hub)); + memcpy (&g_header.player_hub, res_man.Res_open(CUR_PLAYER_ID) + sizeof(_standardHeader), sizeof(_object_hub)); res_man.Res_close(CUR_PLAYER_ID); // logic, graphic & mega structures - GetPlayerStructures(); // copy the 4 essential player object structures into the header + GetPlayerStructures(); // copy the 4 essential player object structures into the g_header //------------------------------------------------------ - // copy the header to the buffer + // copy the g_header to the buffer - memcpy( buffer->ad, &header, sizeof(header) ); // copy the header to the savegame buffer +#ifdef SCUMM_BIG_ENDIAN + converHeaderEndian(g_header); +#endif + memcpy( buffer->ad, &g_header, sizeof(g_header) ); // copy the g_header to the savegame buffer //------------------------------------------------------ // copy the global variables to the buffer varsRes = res_man.Res_open(1); // open variables resource - memcpy( buffer->ad + sizeof(header), varsRes, header.varLength ); // copy that to the buffer, following the header + memcpy( buffer->ad + sizeof(g_header), varsRes, FROM_LE_32(g_header.varLength) ); // copy that to the buffer, following the g_header +#ifdef SCUMM_BIG_ENDIAN + uint32 *globalVars = (uint32 *)(buffer->ad + sizeof(g_header)); + const uint numVars = FROM_LE_32(g_header.varLength)/4; + for (uint i = 0; i < numVars; i++) { + globalVars[i] = SWAP_BYTES_32(globalVars[i]); + } +#endif res_man.Res_close(1); // close variables resource //------------------------------------------------------ // set the checksum & copy that to the buffer (James05aug97) - header.checksum = CalcChecksum((buffer->ad)+sizeof(header.checksum), size-sizeof(header.checksum)); - memcpy( buffer->ad, &header.checksum, sizeof(header.checksum) ); // copy the header to the savegame buffer + g_header.checksum = TO_LE_32(CalcChecksum((buffer->ad)+sizeof(g_header.checksum), size-sizeof(g_header.checksum))); + memcpy( buffer->ad, &g_header.checksum, sizeof(g_header.checksum) ); // copy the g_header to the savegame buffer //------------------------------------------------------ } @@ -289,12 +346,15 @@ uint32 RestoreFromBuffer(mem *buffer, uint32 size) uint8 *varsRes; int32 pars[2]; - memcpy( &header, buffer->ad, sizeof(header) ); // get a copy of the header from the savegame buffer + memcpy( &g_header, buffer->ad, sizeof(g_header) ); // get a copy of the g_header from the savegame buffer +#ifdef SCUMM_BIG_ENDIAN + converHeaderEndian(g_header); +#endif //------------------------------------------------------ - // Calc checksum & check that aginst the value stored in the header (James05aug97) + // Calc checksum & check that aginst the value stored in the g_header (James05aug97) - if (header.checksum != CalcChecksum((buffer->ad)+sizeof(header.checksum), size-sizeof(header.checksum))) + if (g_header.checksum != CalcChecksum((buffer->ad)+sizeof(g_header.checksum), size-sizeof(g_header.checksum))) { Free_mem( buffer ); return(SR_ERR_INCOMPATIBLE); // error: incompatible save-data - can't use! @@ -305,7 +365,7 @@ uint32 RestoreFromBuffer(mem *buffer, uint32 size) // Note that during development, earlier savegames will often be shorter than the current expected length - if (header.varLength != res_man.Res_fetch_len(1)) // if header contradicts actual current size of global variables + if (g_header.varLength != res_man.Res_fetch_len(1)) // if g_header contradicts actual current size of global variables { Free_mem( buffer ); return(SR_ERR_INCOMPATIBLE); // error: incompatible save-data - can't use! @@ -318,35 +378,42 @@ uint32 RestoreFromBuffer(mem *buffer, uint32 size) //---------------------------------- // get player character data from savegame buffer - // object hub is just after the standard header - memcpy (res_man.Res_open(CUR_PLAYER_ID) + sizeof(_standardHeader), &header.player_hub, sizeof(_object_hub)); + // object hub is just after the standard g_header + memcpy (res_man.Res_open(CUR_PLAYER_ID) + sizeof(_standardHeader), &g_header.player_hub, sizeof(_object_hub)); res_man.Res_close(CUR_PLAYER_ID); - PutPlayerStructures(); // fill in the 4 essential player object structures from the header + PutPlayerStructures(); // fill in the 4 essential player object structures from the g_header //---------------------------------- // get variables resource from the savegame buffer varsRes = res_man.Res_open(1); // open variables resource - memcpy( varsRes, buffer->ad + sizeof(header), header.varLength );// copy that to the buffer, following the header + memcpy( varsRes, buffer->ad + sizeof(g_header), g_header.varLength );// copy that to the buffer, following the g_header +#ifdef SCUMM_BIG_ENDIAN + uint32 *globalVars = (uint32 *)varsRes; + const uint numVars = g_header.varLength/4; + for (uint i = 0; i < numVars; i++) { + globalVars[i] = SWAP_BYTES_32(globalVars[i]); + } +#endif res_man.Res_close(1); // close variables resource Free_mem( buffer ); // free it now, rather than in RestoreGame, to unblock memory before new screen & runlist loaded - pars[0] = header.screenId; + pars[0] = g_header.screenId; pars[1] = 1; FN_init_background(pars); this_screen.new_palette=99; // (JEL08oct97) so palette not restored immediately after control panel - we want to fade up instead! - this_screen.feet_x = header.feet_x; // these need setting after the defaults get set in FN_init_background - this_screen.feet_y = header.feet_y; // remember that these can change through the game, so need saving & restoring too - LLogic.Express_change_session(header.runListId); // start the new run list + this_screen.feet_x = g_header.feet_x; // these need setting after the defaults get set in FN_init_background + this_screen.feet_y = g_header.feet_y; // remember that these can change through the game, so need saving & restoring too + LLogic.Express_change_session(g_header.runListId); // start the new run list //---------------------------------------------------------------------------- // (James01aug97) // Force in the new scroll position, so unsightly scroll-catch-up does not occur // when screen first draws after returning from restore panel - this_screen.player_feet_x = header.mega.feet_x; // set 'this_screen's record of player position - this_screen.player_feet_y = header.mega.feet_y; // - ready for Set_scrolling() + this_screen.player_feet_x = g_header.mega.feet_x; // set 'this_screen's record of player position + this_screen.player_feet_y = g_header.mega.feet_y; // - ready for Set_scrolling() if (this_screen.scroll_flag) // if this screen is wide Set_scrolling(); // recompute the scroll offsets now, @@ -354,19 +421,19 @@ uint32 RestoreFromBuffer(mem *buffer, uint32 size) //---------------------------------------------------------------------------- // Any music required will be started after we've returned from Restore_control() // - see System_menu() in mouse.cpp! - looping_music_id = header.music_id; + looping_music_id = g_header.music_id; //------------------------------------------------------ //-------------------------------------- // Write to walkthrough file (zebug0.txt) #ifdef _SWORD2_DEBUG Zdebug(0,"*************************************"); - Zdebug(0,"RESTORED GAME \"%s\"", header.description); + Zdebug(0,"RESTORED GAME \"%s\"", g_header.description); Zdebug(0,"*************************************"); // Also write this to system debug file Zdebug("*************************************"); - Zdebug("RESTORED GAME \"%s\"", header.description); + Zdebug("RESTORED GAME \"%s\"", g_header.description); Zdebug("*************************************"); #endif //-------------------------------------- @@ -394,7 +461,7 @@ uint32 GetSaveDescription(uint16 slotNo, uint8 *description) // (James05feb97) return(SR_ERR_FILEOPEN); // error: couldn't open file - in->read(&dummy, sizeof(_savegameHeader)); // read header + in->read(&dummy, sizeof(_savegameHeader)); // read g_header delete in; delete mgr; sprintf((char*)description, dummy.description); @@ -445,7 +512,7 @@ void PutPlayerStructures(void) // James27feb97 (updated by James on 29july97) null_pc=14; // script no. 14 - 'set_up_nico_anim_tables' RunScript( raw_script_ad, raw_script_ad, &null_pc ); - switch (header.mega.megaset_res) // which megaset was the player at the time of saving? + switch (g_header.mega.megaset_res) // which megaset was the player at the time of saving? { case 36: // GeoMega: null_pc=9; // script no.9 - 'player_is_george' @@ -475,7 +542,7 @@ void PutPlayerStructures(void) // James27feb97 (updated by James on 29july97) //------------------------------------------------------------------------------------ int32 FN_pass_player_savedata(int32 *params) // James27feb97 { - // copies the 4 essential player structures into the savegame header + // copies the 4 essential player structures into the savegame g_header // - run script 7 of player object to request this // remember, we cannot simply read a compact any longer but instead must request it from the object itself @@ -484,10 +551,10 @@ int32 FN_pass_player_savedata(int32 *params) // James27feb97 // 1 pointer to object's graphic structure // 2 pointer to object's mega structure - // copy from player object to savegame header - memcpy( &header.logic, (uint8*)params[0], sizeof(Object_logic) ); - memcpy( &header.graphic, (uint8*)params[1], sizeof(Object_graphic) ); - memcpy( &header.mega, (uint8*)params[2], sizeof(Object_mega) ); + // copy from player object to savegame g_header + memcpy( &g_header.logic, (uint8*)params[0], sizeof(Object_logic) ); + memcpy( &g_header.graphic, (uint8*)params[1], sizeof(Object_graphic) ); + memcpy( &g_header.mega, (uint8*)params[2], sizeof(Object_mega) ); return(IR_CONT); //makes no odds } @@ -508,10 +575,10 @@ int32 FN_get_player_savedata(int32 *params) // James27feb97 int32 pars[3]; - // copy from savegame header to player object - memcpy( (uint8*)ob_logic, &header.logic, sizeof(Object_logic) ); - memcpy( (uint8*)ob_graphic, &header.graphic, sizeof(Object_graphic) ); - memcpy( (uint8*)ob_mega, &header.mega, sizeof(Object_mega) ); + // copy from savegame g_header to player object + memcpy( (uint8*)ob_logic, &g_header.logic, sizeof(Object_logic) ); + memcpy( (uint8*)ob_graphic, &g_header.graphic, sizeof(Object_graphic) ); + memcpy( (uint8*)ob_mega, &g_header.mega, sizeof(Object_mega) ); // any walk-data must be cleared - the player will be set to stand if he was walking when saved |