Basic Return to Dinosaur land support

Author: snesrev

assets/compile_resources.py

@@ -235,6 +235,10 @@ def decomp_data(ea):
 kLmFeature_TideWaterTweak = 1 << 18
 kLmFeature_EnemyCollTweak = 1 << 19
 kLmFeature_Ow4bppGfx = 1 << 20
+kLmFeature_DontResetOwPlayersMap = 1 << 21
+kLmFeature_NonStdGfxAA8D = 1 << 22 
+kLmFeature_TimerTweaks = 1 << 23
+kLmFeature_NoDefaultSavePrompts = 1 << 24
 
 kHack_Walljump = 1 << 0
 
@@ -734,10 +738,15 @@ def calc_exanim_size(p):
   lm_feat.flags |= kLmFeature_TideWaterTweak if get_byte(0xa045) == 0x22 else 0
   lm_feat.flags |= kLmFeature_EnemyCollTweak if get_byte(0x194B6) == 0x5c else 0
   lm_feat.flags |= kLmFeature_Ow4bppGfx if get_bytes(0xA149, 4) != b'\x22\x28\xBA\x00' else 0
+  lm_feat.flags |= kLmFeature_DontResetOwPlayersMap if get_byte(0xa0a0) == 0xea else 0
+  lm_feat.flags |= kLmFeature_NonStdGfxAA8D if get_byte(0xAA8D) != 0x08 else 0
+  lm_feat.flags |= kLmFeature_TimerTweaks if get_byte(0x58E24) == 0x8f else 0
+  lm_feat.flags |= kLmFeature_NoDefaultSavePrompts if get_byte(0x3BA26) == 0 else 0
+
 
   #  Allows Mario to perform a wall kick by sliding along a wall and pressing the
   # B button.
-  lm_feat.hacks |= kHack_Walljump if get_24(0xA2A2) != 0x586F1 else 0
+  lm_feat.hacks |= kHack_Walljump if get_24(0xA2A1) != 0x86F122 else 0
 
   def add_custom_ow_palette():
     r = b''

assets/util.py

@@ -52,6 +52,7 @@ def get_word(addr):
   'enhanced' : ('Super Mario World Enhanced.ips', '2882a39ac64b597e9260e92aaba610d0b6f03adb', 'Super Mario World Enhanced.bsdiff', '5a53369916fd728033d16db3abceb487900f903a', 'ebe23d8a26759ba1b5c2f4d6d8f8db3ab88e902f'),
   'redrawn' : ('smw_redrawn.ips', '7168df51ba025a12177ce00e88540c1341ef3efc', 'smw_redrawn.bsdiff', '13b658e626020aa35dca4e1c3648c6a6d8afa901', '50702ffc8c2e7115c9ba0c80c8ec40da5a487651'),
   'nsmb' : ('SMW with Levels from NSMB.bps', '4277edf003340021ce4e68fe2278d1d73f4d798c', 'SMW with Levels from NSMB.bsdiff', 'e2d2487324374aea1d67a6aa6b3b47f8b3e6727c', '877e9c6fce29e80e4c52892120af06748550487a'),
+  'return_dino_land' : ('Return to Dinosaur Land.bps', 'e9a891ecd0f6f43a4592487ca2590311be00396d', 'Return to Dinosaur Land.bsdiff', 'ad2ebd7b416cbfd3cd7cac833b0ca7f690b9144b', '1d03777086f3c86b1693f9ce2411f560813732a8')
 }
 kModsPath = os.path.join(DEFAULT_ROM_DIRECTORY, '../smw_hacks/mods')
 

src/common_cpu_infra.c

@@ -279,6 +279,7 @@ Snes *SnesInit(const uint8 *data, int data_size) {
       }
     }
     g_rtl_game_info->initialize();
+    snes_reset(g_snes, true); // reset after loading
     PatchBugs(1, 0);
   } else {
     g_runmode = RM_MINE;

src/funcs.h

@@ -1534,7 +1534,7 @@ void SubmapSwitchProcess01_UpdateLayer1(void);
 void SubmapSwitchProcess05_UpdatePalette(void);
 void SubmapSwitchProcess06_EndWindowHDMA(void);
 void SubmapSwitchProcess07_EndSubmapSwitch(void);
-void UnlockOverworldPathBasedOnExit(void);
+uint16 UnlockOverworldPathBasedOnExit(void);
 uint16 UpdateLevelName_049D7F(uint16 j, uint16 k, uint16 r2w);
 void UpdateLevelName(uint16 r0w);
 void UpdateOverworldSpritePosition(uint8 k);
@@ -2114,6 +2114,10 @@ enum {
   kLmFeature_TideWaterTweak = 1 << 18,
   kLmFeature_EnemyCollTweak = 1 << 19,
   kLmFeature_Ow4bppGfx = 1 << 20,
+  kLmFeature_DontResetOwPlayersMap = 1 << 21,
+  kLmFeature_NonStdGfxAA8D = 1 << 22,
+  kLmFeature_TimerTweaks = 1 << 23,
+  kLmFeature_NoDefaultSavePrompts = 1 << 24,
 };
 
 // Non lunar magic hacks

src/smw_00.c

@@ -2135,7 +2135,8 @@ void GameMode0C_LoadOverworld() {  // 00a087
   ClearOverworldAndCutsceneRAM();
   if (misc_intro_level_flag) {
     timer_title_screen_input_timer = -80;
-    ow_players_map[0] = 0;
+    if (!HAS_LM_FEATURE(kLmFeature_DontResetOwPlayersMap))
+      ow_players_map[0] = 0;
     mirror_mosaic_size_and_bgenable = -16;
     misc_game_mode = 16;
     return;
@@ -2710,8 +2711,9 @@ void UploadGraphicsFiles_UploadGFXFile(uint16 dst_addr, uint8 j, uint8 index) {
   }
 
   bool lm_flag = HAS_LM_FEATURE(kLmFeature_4bppgfx);
+  bool lm_flag2 = HAS_LM_FEATURE(kLmFeature_NonStdGfxAA8D);
 
-  if (misc_level_tileset_setting >= 0x11 && j == (lm_flag ? 0x32 : 8) || j == (lm_flag ? 0x32 : 30)) {
+  if (misc_level_tileset_setting >= 0x11 && j == (lm_flag2 ? 0x32 : 8) || j == (lm_flag2 ? 0x32 : 30)) {
     uint16 r10w = -256;
     for (int8 i = 127; i >= 0; --i) {
       for (int8 k = 7; k >= 0; --k) {
@@ -2720,11 +2722,12 @@ void UploadGraphicsFiles_UploadGFXFile(uint16 dst_addr, uint8 j, uint8 index) {
         *(uint16 *)&graphics_3_bppto4_bppbuffer[(uint8)k] = WORD(p0[0]) | swap16(v11);
         p0 += 2;
       }
+      int step = lm_flag ? 2 : 1;
       for (int8 m = 7; m >= 0; --m) {
         const uint8 *v14 = p0;
         uint16 r12w = *v14;
         *dst++ = r12w | r10w & (*(uint16 *)&graphics_3_bppto4_bppbuffer[(uint8)m] | swap16(*(uint16 *)v14));
-        p0 += 1;
+        p0 += step;
       }
     }
   } else {
@@ -4267,7 +4270,8 @@ void PlayerState09_Death() {  // 00d0b6
     if (!flag_prevent_yoshi_carry_over)
       yoshi_carry_over_levels_flag = 0;
     if ((--player_current_life_count & 0x80) == 0) {
-      if (counter_timer_ones | counter_timer_tens | counter_timer_hundreds) {
+      if (HAS_LM_FEATURE(kLmFeature_TimerTweaks) && lm_timer_var != 0 || 
+          counter_timer_ones | counter_timer_tens | counter_timer_hundreds) {
         misc_game_mode = 11;
         return;
       }

src/smw_04.c

@@ -741,9 +741,20 @@ void OwProcess00_OverworldEntryInitialization() {  // 048ef1
 }
 
 void OwProcess02_HandleLevelBeaten() {  // 048f87
-  UnlockOverworldPathBasedOnExit();
+  uint16 r4 = UnlockOverworldPathBasedOnExit();
   uint8 v0 = 7;
-  while ((uint8)ow_tile_player_is_standing_on != kOwTriggerSaveTiles_048F7F[v0]) {
+  uint8 a = (uint8)ow_tile_player_is_standing_on;
+
+  if (g_lunar_magic) {
+    if (ow_level_tile_settings[ow_level_number_of_each_tiletbl[r4]] & 0x10) {
+      a = 0x80;
+    } else {
+      if (HAS_LM_FEATURE(kLmFeature_NoDefaultSavePrompts))
+        a = 0xff;
+    }
+  }
+
+  while (a != kOwTriggerSaveTiles_048F7F[v0]) {
     if ((--v0 & 0x80) != 0)
       goto LABEL_10;
   }
@@ -1279,27 +1290,29 @@ void OwProcess0C_IntroMarch() {  // 0498c6
   }
 }
 
-void UnlockOverworldPathBasedOnExit() {  // 049903
-  if ((int8)misc_exit_level_action > 0) {
-    uint16 r8 = kSharedOverworldPathTables_DATA_049060[(uint8)(misc_exit_level_action - 1)];
-    uint8 v0 = player_current_characterx4;
-    PointU16 *pt = get_PointU16(ow_players_pos, player_current_characterx4);
-    uint16 r0w = pt->x >> 4;
-    PointU16 *v2 = get_PointU16(ow_players_grid_aligned_pos, player_current_characterx4);
-    v2->x = r0w;
-    uint16 r2w = pt->y >> 4;
-    v2->y = r2w;
-    uint16 r4w = CalculateOverworldPlayerPosition(v0 >> 2, r0w, r2w);
-    uint16 v3 = ow_level_direction_flags[r4w];
-    int16 v4 = r8;
-    if (r8) {
-      do {
-        v3 >>= 1;
-        --v4;
-      } while (v4 >= 0);
-    }
-    *(uint16 *)&ow_level_tile_settings[ow_level_number_of_each_tiletbl[r4w]] |= kBitTable_Bank04[(uint16)(2 * (v3 & 3)) >> 1];
+uint16 UnlockOverworldPathBasedOnExit() {  // 049903
+  if ((int8)misc_exit_level_action <= 0)
+    return 0;
+
+  uint16 r8 = kSharedOverworldPathTables_DATA_049060[(uint8)(misc_exit_level_action - 1)];
+  uint8 v0 = player_current_characterx4;
+  PointU16 *pt = get_PointU16(ow_players_pos, player_current_characterx4);
+  uint16 r0w = pt->x >> 4;
+  PointU16 *v2 = get_PointU16(ow_players_grid_aligned_pos, player_current_characterx4);
+  v2->x = r0w;
+  uint16 r2w = pt->y >> 4;
+  v2->y = r2w;
+  uint16 r4w = CalculateOverworldPlayerPosition(v0 >> 2, r0w, r2w);
+  uint16 v3 = ow_level_direction_flags[r4w];
+  int16 v4 = r8;
+  if (r8) {
+    do {
+      v3 >>= 1;
+      --v4;
+    } while (v4 >= 0);
   }
+  *(uint16 *)&ow_level_tile_settings[ow_level_number_of_each_tiletbl[r4w]] |= kBitTable_Bank04[(uint16)(2 * (v3 & 3)) >> 1];
+  return r4w;
 }
 
 void HandleOverworldPathExits() {  // 049a24
@@ -2043,7 +2056,7 @@ void OwEventProcess07_SilentEventsAndEndOfEvent_Entry2(uint8 a, bool from_where)
   if (HAS_LM_FEATURE(kLmFeature_EventStuff)) {
     LmHook_EventStuff(a, from_where);
   } else {
-    for (uint8 i = 43; (i & 0x80) == 0; --i) {
+    for (uint8 i = kOwEventProcess07_SilentEventsAndEndOfEvent_SilentEventTiles_SIZE - 1; (i & 0x80) == 0; --i) {
       if (a == kOwEventProcess07_SilentEventsAndEndOfEvent_SilentEventTiles[i]) {
         uint8 v4 = i;
         uint8 r2 = kOwEventProcess07_SilentEventsAndEndOfEvent_SilentEventTiles_TileLayer[i];

src/smw_05.c

@@ -594,6 +594,8 @@ void LoadLevelHeader() {  // 0584e3
   r0 = hdr[3];
   if (!counter_sublevels_entered) {
     counter_timer_hundreds = kLoadLevelHeader_TimerTable[r0 >> 6];
+    if (HAS_LM_FEATURE(kLmFeature_TimerTweaks))
+      lm_timer_var = counter_timer_hundreds;
     counter_timer_tens = 0;
     counter_timer_ones = 0;
   }

src/smw_cpu_infra.c

@@ -245,6 +245,17 @@ void SmwCpuInitialize(void) {
       static const uint8 kRevert_0x2e6ec[] = { 0xa9, 0x38, 0x9d, 0xea, 0x15 };
       memcpy(SnesRomPtr(0x2e6ec), kRevert_0x2e6ec, sizeof(kRevert_0x2e6ec));
     }
+
+    // fast rom
+    static const uint8 kRevert_0xfffc[] = { 0x00, 0x80 };
+    memcpy(SnesRomPtr(0xfffc), kRevert_0xfffc, sizeof(kRevert_0xfffc));
+    static const uint8 kRevert_0xffea[] = { 0x6a, 0x81 };
+    memcpy(SnesRomPtr(0xffea), kRevert_0xffea, sizeof(kRevert_0xffea));
+    static const uint8 kRevert_0x801c[] = { 0xfb };
+    memcpy(SnesRomPtr(0x801c), kRevert_0x801c, sizeof(kRevert_0x801c));
+    static const uint8 kRevert_0x8713[] = { 0xb7, 0x02, 0x85, 0x01 };
+    memcpy(SnesRomPtr(0x8713), kRevert_0x8713, sizeof(kRevert_0x8713));
+
   }
 }
 

src/snes/cpu.c

@@ -751,14 +751,16 @@ static void cpu_doOpcode(Cpu* cpu, uint8_t opcode) {
   pc_hist[pc_hist_ctr] = cur_pc;
   pc_hist_ctr = (pc_hist_ctr + 1) & 15;
 
-  if (0 && cur_pc == 0x5D83B) {
+  if (cur_pc == 0x3FDE0) {
+    DumpCpuHistory();
     g_snes->debug_cycles = 0;
   }
 
   if (cur_pc == pc_bp) {
-    printf("Reached BP 0x%x. A=0x%.2x, X=0x%.2x, Y=0x%.2x. C=%d. lm_var13CD=%x\n", 
-      cur_pc, cpu->a, cpu->x, cpu->y, cpu->c,
-      *(uint16*)&g_ram[14]);
+    printf("Reached BP 0x%x. A=0x%.2x, X=0x%.2x, Y=0x%.2x. C=0x%.2x,0x%.2x\n", 
+      cur_pc, cpu->a, cpu->x, cpu->y, 
+      g_ram[0xbcee],
+      g_ram[0xad10]);
 //    printf("T: 16 j=%d, %d\n", g_cpu->y, g_cpu->a);
     bp_cnt += 1;
     //g_snes->debug_cycles = 1;
@@ -776,7 +778,7 @@ static void cpu_doOpcode(Cpu* cpu, uint8_t opcode) {
         break;
       case 2: // rtl
         cpu->pc = cpu_pullWord(cpu) + 1;
-        cpu->k = cpu_pullByte(cpu);
+        cpu->k = cpu_pullByte(cpu) & 0x7f;
         break;
       case 0xe5:
       case 0xe9:
@@ -1002,7 +1004,7 @@ static void cpu_doOpcode(Cpu* cpu, uint8_t opcode) {
       cpu_pushByte(cpu, cpu->k);
       cpu_pushWord(cpu, cpu->pc - 1);
       cpu->pc = value;
-      cpu->k = newK;
+      cpu->k = newK & 0x7f;
       break;
     }
     case 0x23: { // and sr
@@ -1378,7 +1380,7 @@ static void cpu_doOpcode(Cpu* cpu, uint8_t opcode) {
         DumpCpuHistory();
         Die("The game has crashed!\n");
       }
-      cpu->k = new_k;
+      cpu->k = new_k & 0x7f;
       cpu->pc = value;
       break;
     }
@@ -1488,7 +1490,7 @@ static void cpu_doOpcode(Cpu* cpu, uint8_t opcode) {
       }
 
       cpu->pc = cpu_pullWord(cpu) + 1;
-      cpu->k = cpu_pullByte(cpu);
+      cpu->k = cpu_pullByte(cpu) & 0x7f;
       break;
     }
     case 0x6c: { // jmp ind
@@ -2175,7 +2177,7 @@ static void cpu_doOpcode(Cpu* cpu, uint8_t opcode) {
     case 0xdc: { // jml ial
       uint16_t adr = cpu_readOpcodeWord(cpu);
       cpu->pc = cpu_readWord(cpu, adr, (adr + 1) & 0xffff);
-      cpu->k = cpu_read(cpu, (adr + 2) & 0xffff);
+      cpu->k = cpu_read(cpu, (adr + 2) & 0xffff) & 0x7f;
       break;
     }
     case 0xdd: { // cmp abx(r)

src/snes/snes_other.c

@@ -98,7 +98,7 @@ bool snes_loadRom(Snes* snes, const uint8_t* data, int length) {
     snes->cart, headers[used].cartType,
     newData, newLength, headers[used].chips > 0 ? headers[used].ramSize : 0
   );
-  snes_reset(snes, true); // reset after loading
+  
   free(newData);
   return true;
 }