diff --git a/worlds/cv64/data/patches.py b/worlds/cv64/data/patches.py index 938b615b..6ef4eafb 100644 --- a/worlds/cv64/data/patches.py +++ b/worlds/cv64/data/patches.py @@ -197,6 +197,23 @@ deathlink_nitro_edition = [ 0xA168FFFD, # SB T0, 0xFFFD (T3) ] +deathlink_nitro_state_checker = [ + # Checks to see if the player is in an alright state before exploding them. If not, then the Nitro explosion spawn + # code will be aborted, and they should eventually explode after getting out of that state. + # + # Invalid states so far include: interacting/going through a door, being grabbed by a vampire. + 0x90880009, # LBU T0, 0x0009 (A0) + 0x24090005, # ADDIU T1, R0, 0x0005 + 0x11090005, # BEQ T0, T1, [forward 0x05] + 0x24090002, # ADDIU T1, R0, 0x0002 + 0x11090003, # BEQ T0, T1, [forward 0x03] + 0x00000000, # NOP + 0x08000660, # J 0x80001980 + 0x00000000, # NOP + 0x03E00008, # JR RA + 0xAC400048 # SW R0, 0x0048 (V0) +] + launch_fall_killer = [ # Custom code to force the instant fall death if at a high enough falling speed after getting killed by something # that launches you (whether it be the Nitro explosion or a Big Toss hit). The game doesn't normally run the check diff --git a/worlds/cv64/rom.py b/worlds/cv64/rom.py index 8f069555..db621c71 100644 --- a/worlds/cv64/rom.py +++ b/worlds/cv64/rom.py @@ -357,8 +357,12 @@ class CV64PatchExtensions(APPatchExtension): # Make received DeathLinks blow you to smithereens instead of kill you normally. if options["death_link"] == DeathLink.option_explosive: - rom_data.write_int32(0x27A70, 0x10000008) # B [forward 0x08] rom_data.write_int32s(0xBFC0D0, patches.deathlink_nitro_edition) + rom_data.write_int32(0x27A70, 0x10000008) # B [forward 0x08] + rom_data.write_int32(0x27AA0, 0x0C0FFA78) # JAL 0x803FE9E0 + rom_data.write_int32s(0xBFE9E0, patches.deathlink_nitro_state_checker) + # NOP the function call to subtract Nitro from the inventory after exploding, just in case. + rom_data.write_int32(0x32DBC, 0x00000000) # Set the DeathLink ROM flag if it's on at all. if options["death_link"] != DeathLink.option_off: