“Super Castlevania IV (USA)”

Cite as: “Super Castlevania IV (USA)”
Licence: proprietary; never redistributed (docs/data-policy.md#roms)
Credit: Konami
Notes: No-Intro "Super Castlevania IV (USA)". 1 MB LoROM (map mode $20), no SRAM, no copier header, so a file offset is (bank AND $7F) × $8000 + (address − $8000). RasmusKarlsson's SuperCastlevaniaIvSNESRecomp (src/character_tuning.cpp) lists the file offsets of the movement constants; the atlas used them as leads and disassembled the code around each.

Cited on

Super Castlevania IV's take-off sets Simon's vertical speed to 4.5 px/frame up and his horizontal speed to 1.25 px/frame toward a held Left or Right, or 0, then puts him in the jumping state.	`0x2217-0x22300x2392-0x23F9`	Code
Super Castlevania IV's jump holds the take-off speed with no gravity while the jump button stays down, for up to 4 frames, then adds 0.375 px/frame² each frame until the rise stops, holds Simon still at the top for about 9 frames, and falls under the same gravity, capped at 8 px/frame.	`0x23FA-0x24090x294D-0x29CF0x2739-0x2769`	Code
In Super Castlevania IV's jump a held Left or Right adds 0.25 px/frame² toward that side, up to 1.25 px/frame, and with neither held the speed is left as it is, where Castlevania's take-off fixes the direction for the whole jump.	`0x23FA-0x24090x28DE-0x294C`	Code
Super Castlevania IV prices its five subweapons from one table, 1 heart each for the first four and 5 for the fifth; a use with fewer hearts than the price leaves them as they are, and otherwise subtracts the price in BCD.	`0x3D43-0x3D5B0x9257-0x92600x0-0x140x1B8-0x1C9`	Code