0: Crateria 1: Brinstar 2: Norfair 3: Wrecked Ship 4: Maridia 5: Tourian 6: Ceres 7: Debug 0: Air 1: Slope 2: Spike air 3: Special air 4: Shootable air 5: Horizontal extension 6: Unused air 7: Bombable air 8: Solid block 9: Door block Ah: Spike block Bh: Special block Ch: Shootable block Dh: Vertical extension Eh: Grapple block Fh: Bombable block 1: Slope { Bottom and right are the position of fractional slopes + 80h: Y flip + 40h: X flip + 20h: Unused. "Yellow" bit in SMILE Square slopes: { BTS 0: Half height BTS 1: Half width BTS 2: Quarter BTS 3: Three-quarters BTS 4: Whole } Non-square slopes: { BTS 5: Unused. Half height isosceles triangle BTS 6: Unused. Isosceles triangle BTS 7: Half height rectangle BTS 8: Unused. Rectangle BTS 9: Unused. Rectangle BTS Ah: Unused. Rectangle BTS Bh: Unused. Rectangle BTS Ch: Unused. Rectangle BTS Dh: Unused. Rectangle BTS Eh: Unused. Very bumpy triangle BTS Fh: Bumpy triangle BTS 10h: Unused BTS 11h: Unused BTS 12h: Triangle BTS 13h: Rectangle BTS 14h: Quarter triangle BTS 15h: Three quarter triangle BTS 16h: Lower half-height triangle BTS 17h: Upper half-height triangle BTS 18h: Unused. Lower third-height triangle BTS 19h: Unused. Middle third-height triangle BTS 1Ah: Unused. Upper third-height triangle BTS 1Bh: Upper half-width triangle BTS 1Ch: Lower half-width triangle BTS 1Dh: Unused. Upper third-width triangle BTS 1Eh: Unused. Middle third-width triangle BTS 1Fh: Unused. Lower third-width triangle } } 2 / Ah: Spike { BTS 0: Solid only. Generic spike (60 damage) BTS 1: Solid only. Kraid's lair spike (10h damage). Air version has NOP'd out code that damages Samus and kills her jump height BTS 2: Air only. Air spike (10h damage) BTS 3: Solid only. Draygon's broken turret (10h damage) BTS Eh: Solid only. X-rayable block (used in Blue Brinstar boulder room) BTS Fh: Solid only. Enemy breakable block (used in Shaktool's room) } 3 / Bh: Special { Note that special blocks with BTS 8..Dh show crumble blocks when x-rayed, but act like air BTS 0: 1x1 respawning crumble block BTS 1: 2x1 respawning crumble block BTS 2: 1x2 respawning crumble block BTS 3: 2x2 respawning crumble block BTS 4: 1x1 crumble block BTS 5: 2x1 crumble block BTS 6: 1x2 crumble block BTS 7: 2x2 crumble block BTS 8: Air only. Rightwards treadmill, disabled in Wrecked Ship unless Phantoon is dead BTS 9: Air only. Leftwards treadmill, disabled in Wrecked Ship unless Phantoon is dead BTS Ah: Air only. Rightwards treadmill, always on BTS Bh: Air only. Leftwards treadmill, always on BTS Eh: Respawning speed boost block BTS Fh: Speed boost block BTS 44h: Generic PLM shot trigger BTS 45h: Item collision detection BTS 46h: Scroll PLM trigger BTS 47h: Map station right access BTS 48h: Map station left access BTS 49h: Energy station right access BTS 4Ah: Energy station left access BTS 4Bh: Missile station right access BTS 4Ch: Missile station left access BTS 4Dh: Save station trigger Crateria/debug BTS 80h: Air only. Ice physics Brinstar BTS 80h: Air only. Floor plant BTS 81h: Air only. Ceiling plant BTS 82h: Respawning speed block, slower crumble animation BTS 83h: Speed block, slower crumble animation BTS 84h: Respawning speed block (used by dachora pit) BTS 85h: Speed boost block Norfair BTS 83h: Lower Norfair chozo hand trigger Wrecked Ship BTS 80h: Wrecked Ship chozo hand trigger Maridia BTS 80h..82h: Quicksand surface, can run on without sinking BTS 83h: Submerging quicksand (used in sand falls rooms) BTS 84h: Sand falls - slow. Used in the ceilings of pre-Draygon mochtroid rooms (so basically unused) BTS 85h: Sand falls - fast } 7 / Fh: Bombable { BTS 0: 1x1 respawning bomb block BTS 1: 2x1 respawning bomb block BTS 2: 1x2 respawning bomb block BTS 3: 2x2 respawning bomb block BTS 4: 1x1 bomb block BTS 5: 2x1 bomb block BTS 6: 1x2 bomb block BTS 7: 2x2 bomb block } 4 / Ch: Shootable { BTS 0: 1x1 respawning shot block BTS 1: 2x1 respawning shot block BTS 2: 1x2 respawning shot block BTS 3: 2x2 respawning shot block BTS 4: 1x1 shot block BTS 5: 2x1 shot block BTS 6: 1x2 shot block BTS 7: 2x2 shot block BTS 8: Respawning power bomb block BTS 9: Power bomb block BTS Ah: Respawning super missile block BTS Bh: Super missile block BTS Ch: Fake super missile block (solid block but shows super missile block when x-rayed) BTS Dh: Fake super missile block BTS Eh: Fake super missile block BTS Fh: Fake super missile block BTS 10h: Gate blocks BTS 40h: Blue door facing left BTS 41h: Blue door facing right BTS 42h: Blue door facing up BTS 43h: Blue door facing down BTS 44h: Generic shot trigger BTS 45h: Item trigger BTS 46h: Left blue gate trigger BTS 47h: Right blue gate trigger BTS 48h: Left red gate trigger BTS 49h: Right red gate trigger BTS 4Ah: Left green gate trigger BTS 4Bh: Right green gate trigger BTS 4Ch: Left orange gate trigger BTS 4Dh: Right orange gate trigger BTS 4Fh: Critters escape block } Eh: Grapple block { BTS 0: Generic grapple block BTS 1: Respawning crumbling grapple block BTS 2: Non-respawning crumbling grapple block BTS 3: Generic grapple block <-- need to check x-ray and other non-$94 properties BTS 80h+: Grapple-through block }