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zackthehuman/mm3info
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= About = mm3info is an FCEUX script for extracting game information from Mega Man 3. This script was inspired by the "Mega Man 2 LASER EYES" script by miau. The purpose of this script is to be an aid in understanding the mechanics of the NES game Mega Man 3. So far this script: - Allows the display of object information, such as ID and Position - Allows you to place Rock anywhere on screen by middle-clicking = Todo = - Display object names - Display object hit boxes = Mega Man 3 RAM Map = I am still studying the RAM is used by the game. Below are my findings up to this point in time. $00A2: Rock's health $0093: Object logic delay; if set to value other than 1, causes a counter at 0081) to count down from the value at 0081 to 0 before advancing the logic one frame $0200-$02FF: Sprite data for DMA $0300-$05FF: Game object data $0300-$031F: State index? $0320-$033F: Type $0340-$035F: Fractional X position $0360-$037F: Whole X position $0380-$039F: Screen number (which screen the object is in) $03A0-$03BF: Fractional Y position $03C0-$03DF: Whole Y position $03E0-$03FF: Mystery #1 (if set to a non-zero value then object does not spawn or will disappear if already spawned) $0400-$041F: Fractional X speed $0420-$043F: Whole X speed $0440-$045F: Fractional Y speed $0460-$047F: Whole Y speed $0480-$049F: Shield status. Shots bounce off when value = A1, but takes damage when value = C1 $04A0-$04BF: Direction $04C0-$04DF: Mystery #2 / object number? on-screen number? $04E0-$04FF: Hit points $0500-$051F: Timer/counter 1 $0520-$053F: Timer/counter 2 $0540-$055F: Mystery #3 / seems like its not used $0560-$057F: Value #1 (Spark man's raising platforms use this as their "return to" Y value) $0580-$059F: Sprite direction? D0 = left, 90 = right $05A0-$05BF: Sprite index (within animation)? (can affect behavior if animation doesn't change) $05C0-$05DF: Animation sequence number (can affect behavior if animation doesn't change) $05E0-$05FF: Animation counter or something (can affect behavior if animation doesn't change) $0600-$XXXX: Tile data starts here
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FCEUX script for extracting game information from Mega Man 3
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