work on 'vblank on line start' problem, var changes, mask defines
[picodrive.git] / platform / common / emu.c
index 9d573bf..e4cce67 100644 (file)
@@ -40,6 +40,8 @@ int rom_loaded = 0;
 char noticeMsg[64];\r
 int state_slot = 0;\r
 int config_slot = 0, config_slot_current = 0;\r
+char lastRomFile[512];\r
+int kb_combo_keys = 0, kb_combo_acts = 0;      // keys and actions which need button combos\r
 \r
 unsigned char *movie_data = NULL;\r
 static int movie_size = 0;\r
@@ -87,8 +89,8 @@ static void get_ext(char *file, char *ext)
        strlwr_(ext);\r
 }\r
 \r
-char *biosfiles_us[] = { "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210" };\r
-char *biosfiles_eu[] = { "eu_mcd2_9306", "eu_mcd2_9303",   "eu_mcd1_9210" };\r
+char *biosfiles_us[] = { "us_scd1_9210", "us_scd2_9306", "SegaCDBIOS9303" };\r
+char *biosfiles_eu[] = { "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303"   };\r
 char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };\r
 \r
 int emu_findBios(int region, char **bios_file)\r
@@ -139,6 +141,7 @@ int emu_findBios(int region, char **bios_file)
 }\r
 \r
 /* check if the name begins with BIOS name */\r
+/*\r
 static int emu_isBios(const char *name)\r
 {\r
        int i;\r
@@ -150,8 +153,9 @@ static int emu_isBios(const char *name)
                if (strstr(name, biosfiles_jp[i]) != NULL) return 1;\r
        return 0;\r
 }\r
+*/\r
 \r
-static unsigned char scd_id_header[0x100];\r
+static unsigned char id_header[0x100];\r
 \r
 /* checks if romFileName points to valid MegaCD image\r
  * if so, checks for suitable BIOS */\r
@@ -177,7 +181,7 @@ int emu_cdCheck(int *pregion)
        }\r
 \r
        pm_seek(cd_f, (type == 1) ? 0x100 : 0x110, SEEK_SET);\r
-       pm_read(scd_id_header, sizeof(scd_id_header), cd_f);\r
+       pm_read(id_header, sizeof(id_header), cd_f);\r
 \r
        /* it seems we have a CD image here. Try to detect region now.. */\r
        pm_seek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);\r
@@ -229,31 +233,22 @@ static int extract_text(char *dest, unsigned char *src, int len, int swab)
 char *emu_makeRomId(void)\r
 {\r
        static char id_string[3+0x11+0x11+0x30+16];\r
-       unsigned char *id_header;\r
-       int pos;\r
+       int pos, swab = 1;\r
 \r
-       if (Pico.rom == NULL) {\r
-               id_string[0] = 0;\r
-               return id_string;\r
-       }\r
-\r
-       if (PicoMCD & 1) {\r
-               id_header = scd_id_header;\r
+       if (PicoAHW & PAHW_MCD) {\r
                strcpy(id_string, "CD|");\r
-       } else {\r
-               id_header = Pico.rom + 0x100;\r
-               strcpy(id_string, "MD|");\r
+               swab = 0;\r
        }\r
+       else strcpy(id_string, "MD|");\r
        pos = 3;\r
 \r
-       pos += extract_text(id_string + pos, id_header + 0x80, 0x0e, 1); // serial\r
+       pos += extract_text(id_string + pos, id_header + 0x80, 0x0e, swab); // serial\r
        id_string[pos] = '|'; pos++;\r
-       pos += extract_text(id_string + pos, id_header + 0xf0, 0x03, 1); // region\r
+       pos += extract_text(id_string + pos, id_header + 0xf0, 0x03, swab); // region\r
        id_string[pos] = '|'; pos++;\r
-       pos += extract_text(id_string + pos, id_header + 0x50, 0x30, 1); // overseas name\r
+       pos += extract_text(id_string + pos, id_header + 0x50, 0x30, swab); // overseas name\r
        id_string[pos] = 0;\r
 \r
-       printf("id_string: %s\n", id_string);\r
        return id_string;\r
 }\r
 \r
@@ -283,7 +278,8 @@ int emu_ReloadRom(void)
                free(movie_data);\r
                movie_data = 0;\r
        }\r
-       if (!strcmp(ext, ".gmv")) {\r
+       if (!strcmp(ext, ".gmv"))\r
+       {\r
                // check for both gmv and rom\r
                int dummy;\r
                FILE *movie_file = fopen(romFileName, "rb");\r
@@ -329,13 +325,14 @@ int emu_ReloadRom(void)
                get_ext(romFileName, ext);\r
        }\r
 \r
-       if ((PicoMCD & 1) && Pico_mcd != NULL)\r
+       if ((PicoAHW & PAHW_MCD) && Pico_mcd != NULL)\r
                Stop_CD();\r
 \r
        // check for MegaCD image\r
        cd_state = emu_cdCheck(&cd_region);\r
        if (cd_state > 0)\r
        {\r
+               PicoAHW |= PAHW_MCD;\r
                // valid CD image, check for BIOS..\r
 \r
                // we need to have config loaded at this point\r
@@ -349,16 +346,16 @@ int emu_ReloadRom(void)
                }\r
                if (!emu_findBios(cd_region, &used_rom_name)) {\r
                        // bios_help() ?\r
+                       PicoAHW &= ~PAHW_MCD;\r
                        return 0;\r
                }\r
 \r
-               PicoMCD |= 1;\r
                get_ext(used_rom_name, ext);\r
        }\r
        else\r
        {\r
-               if (PicoMCD & 1) Stop_CD();\r
-               PicoMCD &= ~1;\r
+               if (PicoAHW & PAHW_MCD) Stop_CD();\r
+               PicoAHW &= ~PAHW_MCD;\r
        }\r
 \r
        rom = pm_open(used_rom_name);\r
@@ -391,6 +388,8 @@ int emu_ReloadRom(void)
        }\r
 \r
        // load config for this ROM (do this before insert to get correct region)\r
+       if (!(PicoAHW & PAHW_MCD))\r
+               memcpy(id_header, rom_data + 0x100, sizeof(id_header));\r
        if (!cfg_loaded) {\r
                ret = emu_ReadConfig(1, 1);\r
                if (!ret) emu_ReadConfig(0, 1);\r
@@ -418,13 +417,6 @@ int emu_ReloadRom(void)
 \r
        menu_romload_end();\r
 \r
-       if (!emu_isBios(romFileName))\r
-       {\r
-               // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
-               strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
-               currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
-       }\r
-\r
        if (PicoPatches) {\r
                PicoPatchPrepare();\r
                PicoPatchApply();\r
@@ -433,16 +425,16 @@ int emu_ReloadRom(void)
        // additional movie stuff\r
        if (movie_data) {\r
                if(movie_data[0x14] == '6')\r
-                    PicoOpt |=  0x20; // 6 button pad\r
-               else PicoOpt &= ~0x20;\r
-               PicoOpt |= 0x10040; // accurate timing, no VDP fifo timing\r
+                    PicoOpt |=  POPT_6BTN_PAD; // 6 button pad\r
+               else PicoOpt &= ~POPT_6BTN_PAD;\r
+               PicoOpt |= POPT_DIS_VDP_FIFO|POPT_ACC_TIMING; // accurate timing, no VDP fifo timing\r
                if(movie_data[0xF] >= 'A') {\r
                        if(movie_data[0x16] & 0x80) {\r
                                PicoRegionOverride = 8;\r
                        } else {\r
                                PicoRegionOverride = 4;\r
                        }\r
-                       PicoReset(0);\r
+                       PicoReset();\r
                        // TODO: bits 6 & 5\r
                }\r
                movie_data[0x18+30] = 0;\r
@@ -450,7 +442,7 @@ int emu_ReloadRom(void)
        }\r
        else\r
        {\r
-               PicoOpt &= ~0x10000;\r
+               PicoOpt &= ~POPT_DIS_VDP_FIFO;\r
                if(Pico.m.pal) {\r
                        strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
                } else {\r
@@ -463,6 +455,8 @@ int emu_ReloadRom(void)
        if (currentConfig.EmuOpt & 1)\r
                emu_SaveLoadGame(1, 1);\r
 \r
+       strncpy(lastRomFile, romFileName, sizeof(lastRomFile)-1);\r
+       lastRomFile[sizeof(lastRomFile)-1] = 0;\r
        rom_loaded = 1;\r
        return 1;\r
 }\r
@@ -487,6 +481,18 @@ static void romfname_ext(char *dst, const char *prefix, const char *ext)
 }\r
 \r
 \r
+static void make_config_cfg(char *cfg)\r
+{\r
+       strncpy(cfg, PicoConfigFile, 511);\r
+       if (config_slot != 0)\r
+       {\r
+               char *p = strrchr(cfg, '.');\r
+               if (p == NULL) p = cfg + strlen(cfg);\r
+               sprintf(p, ".%i.cfg", config_slot);\r
+       }\r
+       cfg[511] = 0;\r
+}\r
+\r
 int emu_ReadConfig(int game, int no_defaults)\r
 {\r
        char cfg[512];\r
@@ -497,30 +503,38 @@ int emu_ReadConfig(int game, int no_defaults)
        {\r
                if (!no_defaults)\r
                        emu_setDefaultConfig();\r
-               strncpy(cfg, PicoConfigFile, 511);\r
-               if (config_slot != 0)\r
-               {\r
-                       char *p = strrchr(cfg, '.');\r
-                       if (p == NULL) p = cfg + strlen(cfg);\r
-                       sprintf(p, ".%i.cfg", config_slot);\r
-               }\r
-               cfg[511] = 0;\r
+               make_config_cfg(cfg);\r
                ret = config_readsect(cfg, NULL);\r
        }\r
        else\r
        {\r
-               if (!no_defaults)\r
-                       emu_setDefaultConfig();\r
+               char *sect = emu_makeRomId();\r
 \r
                // try new .cfg way\r
                if (config_slot != 0)\r
                     sprintf(cfg, "game.%i.cfg", config_slot);\r
                else strcpy(cfg,  "game.cfg");\r
-               ret = config_readsect(cfg, emu_makeRomId());\r
+\r
+               ret = -1;\r
+               if (config_havesect(cfg, sect))\r
+               {\r
+                       // read user's config\r
+                       int vol = currentConfig.volume;\r
+                       emu_setDefaultConfig();\r
+                       ret = config_readsect(cfg, sect);\r
+                       currentConfig.volume = vol; // make vol global (bah)\r
+               }\r
+               else\r
+               {\r
+                       // read global config, and apply game_def.cfg on top\r
+                       make_config_cfg(cfg);\r
+                       config_readsect(cfg, NULL);\r
+                       ret = config_readsect("game_def.cfg", sect);\r
+               }\r
 \r
                if (ret != 0)\r
                {\r
-                       // fall back to old\r
+                       // fall back to old game specific cfg\r
                        char extbuf[16];\r
                        if (config_slot != 0)\r
                                sprintf(extbuf, ".%i.pbcfg", config_slot);\r
@@ -532,7 +546,9 @@ int emu_ReadConfig(int game, int no_defaults)
                                f = fopen(cfg, "rb");\r
                        }\r
                        if (f) {\r
-                               int bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
+                               int bread;\r
+                               fseek(f, 512, SEEK_SET); // skip unused lrom buffer\r
+                               bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
                                lprintf("emu_ReadConfig: %s %s\n", cfg, bread > 0 ? "(ok)" : "(failed)");\r
                                fclose(f);\r
                                ret = 0;\r
@@ -543,12 +559,12 @@ int emu_ReadConfig(int game, int no_defaults)
                                PsndRate = currentConfig.s_PsndRate;\r
                                PicoRegionOverride = currentConfig.s_PicoRegion;\r
                                PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
-                               PicoCDBuffers = currentConfig.s_PicoCDBuffers;\r
+                               // PicoCDBuffers = currentConfig.s_PicoCDBuffers; // ignore in this case\r
                        }\r
                }\r
                else\r
                {\r
-                       lprintf("loaded cf from game sect\n");\r
+                       lprintf("loaded cfg from sect \"%s\"\n", sect);\r
                }\r
        }\r
 \r
@@ -593,10 +609,12 @@ int emu_WriteConfig(int is_game)
                     sprintf(cfg, "game.%i.cfg", config_slot);\r
                else strcpy(cfg,  "game.cfg");\r
                game_sect = emu_makeRomId();\r
+               lprintf("emu_WriteConfig: sect \"%s\"\n", game_sect);\r
        }\r
 \r
        lprintf("emu_WriteConfig: %s ", cfg);\r
        ret = config_writesect(cfg, game_sect);\r
+       if (write_lrom) config_writelrom(cfg);\r
 #ifndef NO_SYNC\r
        sync();\r
 #endif\r
@@ -654,6 +672,47 @@ void emu_textOut16(int x, int y, const char *text)
        }\r
 }\r
 \r
+void emu_findKeyBindCombos(void)\r
+{\r
+       int act, u;\r
+\r
+       // find out which keys and actions are combos\r
+       kb_combo_keys = kb_combo_acts = 0;\r
+       for (act = 0; act < 32; act++)\r
+       {\r
+               int keyc = 0, keyc2 = 0;\r
+               if (act == 16 || act == 17) continue; // player2 flag\r
+               if (act > 17)\r
+               {\r
+                       for (u = 0; u < 32; u++)\r
+                               if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
+               }\r
+               else\r
+               {\r
+                       for (u = 0; u < 32; u++)\r
+                               if ((currentConfig.KeyBinds[u] & 0x30000) == 0 && // pl. 1\r
+                                       (currentConfig.KeyBinds[u] & (1 << act))) keyc++;\r
+                       for (u = 0; u < 32; u++)\r
+                               if ((currentConfig.KeyBinds[u] & 0x30000) == 1 && // pl. 2\r
+                                       (currentConfig.KeyBinds[u] & (1 << act))) keyc2++;\r
+                       if (keyc2 > keyc) keyc = keyc2;\r
+               }\r
+               if (keyc > 1)\r
+               {\r
+                       // loop again and mark those keys and actions as combo\r
+                       for (u = 0; u < 32; u++)\r
+                       {\r
+                               if (currentConfig.KeyBinds[u] & (1 << act)) {\r
+                                       kb_combo_keys |= 1 << u;\r
+                                       kb_combo_acts |= 1 << act;\r
+                               }\r
+                       }\r
+               }\r
+       }\r
+\r
+       // printf("combo keys/acts: %08x %08x\n", kb_combo_keys, kb_combo_acts);\r
+}\r
+\r
 \r
 void emu_updateMovie(void)\r
 {\r
@@ -714,11 +773,11 @@ char *emu_GetSaveFName(int load, int is_sram, int slot)
 \r
        if (is_sram)\r
        {\r
-               romfname_ext(saveFname, (PicoMCD&1) ? "brm/" : "srm/", (PicoMCD&1) ? ".brm" : ".srm");\r
+               romfname_ext(saveFname, (PicoAHW&1) ? "brm/" : "srm/", (PicoAHW&1) ? ".brm" : ".srm");\r
                if (load) {\r
                        if (try_ropen_file(saveFname)) return saveFname;\r
                        // try in current dir..\r
-                       romfname_ext(saveFname, NULL, (PicoMCD&1) ? ".brm" : ".srm");\r
+                       romfname_ext(saveFname, NULL, (PicoAHW & PAHW_MCD) ? ".brm" : ".srm");\r
                        if (try_ropen_file(saveFname)) return saveFname;\r
                        return NULL; // give up\r
                }\r
@@ -796,8 +855,9 @@ int emu_SaveLoadGame(int load, int sram)
                int sram_size;\r
                unsigned char *sram_data;\r
                int truncate = 1;\r
-               if (PicoMCD&1) {\r
-                       if (PicoOpt&0x8000) { // MCD RAM cart?\r
+               if (PicoAHW & PAHW_MCD)\r
+               {\r
+                       if (PicoOpt&POPT_EN_MCD_RAMCART) {\r
                                sram_size = 0x12000;\r
                                sram_data = SRam.data;\r
                                if (sram_data)\r
@@ -814,12 +874,13 @@ int emu_SaveLoadGame(int load, int sram)
                }\r
                if (!sram_data) return 0; // SRam forcefully disabled for this game\r
 \r
-               if (load) {\r
+               if (load)\r
+               {\r
                        sramFile = fopen(saveFname, "rb");\r
                        if(!sramFile) return -1;\r
                        fread(sram_data, 1, sram_size, sramFile);\r
                        fclose(sramFile);\r
-                       if ((PicoMCD&1) && (PicoOpt&0x8000))\r
+                       if ((PicoAHW & PAHW_MCD) && (PicoOpt&POPT_EN_MCD_RAMCART))\r
                                memcpy32((int *)Pico_mcd->bram, (int *)sram_data, 0x2000/4);\r
                } else {\r
                        // sram save needs some special processing\r
@@ -879,3 +940,4 @@ int emu_SaveLoadGame(int load, int sram)
                return ret;\r
        }\r
 }\r
+\r