Entrance condition:

{
  "comeInWithSidePlatform": {
    "platforms": [
      {
        "minHeight": 1,
        "maxHeight": 1,
        "minTiles": 5.4375,
        "speedBooster": true,
        "obstructions": [
          [
            1,
            0
          ]
        ],
        "requires": [
          "canMomentumConservingMorph",
          "canInsaneJump",
          "canInsaneMidAirMorph"
        ],
        "note": [
          "This applies to Warehouse Energy Tank Room.",
          "It is double frame-perfect, requiring a last-frame jump in the other room just before Samus would get caught on the door ledge,",
          "and a frame-perfect morph just before Samus would bonk the ceiling.",
          "The aim-down must be delayed until at least 4 frames after entering the room."
        ]
      },
      {
        "minHeight": 1,
        "maxHeight": 1,
        "minTiles": 8.4375,
        "speedBooster": "any",
        "obstructions": [
          [
            1,
            0
          ]
        ],
        "requires": [
          "canInsaneJump",
          {
            "or": [
              "canMomentumConservingMorph",
              "canMomentumConservingTurnaround"
            ]
          }
        ],
        "note": [
          "This applies to Warehouse Entrance.",
          "This requires a last-frame jump and specific horizontal alignment in order to avoid bonking the door frame.",
          "A way to get a correct starting position is to jump, press against the ceiling overhang near the end of the runway,",
          "land, turn around away from the door, then jump and mid-air turnaround toward the door."
        ],
        "devNote": [
          "Speed Booster is not required for this."
        ]
      },
      {
        "minHeight": 1,
        "maxHeight": 1,
        "minTiles": 17,
        "speedBooster": true,
        "obstructions": [
          [
            1,
            0
          ]
        ],
        "requires": [
          {
            "or": [
              "canMomentumConservingMorph",
              {
                "and": [
                  "canMomentumConservingTurnaround",
                  "canTrickyJump"
                ]
              }
            ]
          }
        ],
        "note": [
          "This applies to Warehouse Entrance.",
          "This can be done in three ways:",
          "1) Jump on the last possible frame in the previous room, turn around a little before hitting the ceiling, then morph and hold right to pass through the tunnel.",
          "2) Perform a ceiling mockball through the transition,",
          "unmorph a little before hitting the ceiling,",
          "hold right to press against the wall (to avoid hitting the crab), then morph and hold right to pass through the tunnel.",
          "3) Jump on the last possible frame in the previous room, then perform a ceiling mockball to go up through the hidden space,",
          "briefly releasing right while approaching the ceiling, in order to avoid hitting the crab."
        ],
        "devNote": [
          "The turnaround method has about a 9-frame window for the turnaround.",
          "The through-door ceiling mockball has about a 4-frame window for the jump, between a 1-frame and a 5-frame window for the morph (with later jumps giving a larger window),",
          "and about a 7-frame window for the unmorph.",
          "The after-transition ceiling mockball has an 8-frame for the morph.",
          "Kagoing the crab is also possible, but it seems more difficult than all three other options, and it takes damage, so is probably pointless."
        ]
      },
      {
        "minHeight": 2,
        "maxHeight": 2,
        "minTiles": 8.4375,
        "speedBooster": "any",
        "obstructions": [
          [
            1,
            0
          ]
        ],
        "requires": [
          "canTrickyJump",
          "canMomentumConservingTurnaround"
        ],
        "note": [
          "This applies to Ridley Tank Room and Dust Torizo Room.",
          "From Ridley Tank Room, avoid backing into the corner.",
          "From Dust Torizo Room, it doesn't matter."
        ],
        "devNote": [
          "Speed Booster is not required for this."
        ]
      },
      {
        "minHeight": 3,
        "maxHeight": 3,
        "minTiles": 8.4375,
        "speedBooster": true,
        "obstructions": [
          [
            1,
            0
          ],
          [
            3,
            2
          ]
        ],
        "requires": [
          {
            "or": [
              "canMomentumConservingMorph",
              {
                "and": [
                  "canTrickyDashJump",
                  "canMomentumConservingTurnaround"
                ]
              }
            ]
          }
        ],
        "note": [
          "Applies to Big Boy Room, Mickey Mouse Room, and Metal Pirates."
        ]
      },
      {
        "minHeight": 2,
        "maxHeight": 2,
        "minTiles": 23,
        "speedBooster": "any",
        "obstructions": [
          [
            3,
            0
          ]
        ],
        "requires": [
          "canInsaneJump",
          "canMomentumConservingMorph",
          "canInsaneMidAirMorph"
        ],
        "note": [
          "Applies to Metroid Room 1.",
          "Use a few pixels less than the full runway.",
          "This is double frame-perfect, requiring a last-frame jump before Samus would catch on the door ledge,",
          "and a last-frame morph before Samus would bonk on the ceiling of the door frame.",
          "Unmorph a little before Samus would hit the ceiling, to conserve upward momentum again.",
          "Then quickly morph again and go through the tunnel to the right."
        ],
        "devNote": [
          "The momentum conserving unmorph is lenient, having about a 9-frame window."
        ]
      },
      {
        "minHeight": 2,
        "maxHeight": 2,
        "minTiles": 29.4375,
        "speedBooster": true,
        "obstructions": [
          [
            3,
            0
          ]
        ],
        "requires": [
          "canInsaneJump",
          "canMomentumConservingMorph"
        ],
        "note": [
          "Applies to Statues Hallway.",
          "Jump through the door with a ceiling mockball, then unmorph a little before Samus would bonk the ceiling.",
          "Morph again to pass through the tunnel to the right.",
          "To make the strat more lenient, use less than the full available runway:",
          "Ideally, position Samus to gain an extra run speed of $5.2 or slightly more,",
          "which corresponds to starting 30 tiles from the end of the runway."
        ],
        "devNote": [
          "There is a dropoff in Samus' jump height at an extra run speed of $5.2, which is good here.",
          "Starting at a distance of 30 tiles, there is a 3-frame window for the jump (giving extra run speeds between $5.2 and $5.4)",
          "and between a 1-frame and 3-frame window for the morph (with later jumps giving a larger window).",
          "In any case, the unmorph will be lenient, having about a 9-frame window."
        ]
      },
      {
        "minHeight": 3,
        "maxHeight": 3,
        "minTiles": 29.4375,
        "speedBooster": true,
        "obstructions": [
          [
            3,
            0
          ]
        ],
        "requires": [
          "canInsaneJump",
          "canMomentumConservingMorph"
        ],
        "note": [
          "Applies to Flyway.",
          "Jump through the door with a ceiling mockball.",
          "After pressing against the wall of the hidden space, release right for a moment until after Samus bonks the ceiling,",
          "in order to avoid damage from the crab on the right.",
          "To make the strat more lenient, less than the full available runway should be used:",
          "Ideally, position Samus to gain an extra run speed of $5.2 or slightly more,",
          "which corresponds to starting 30 tiles from the end of the runway (or 10 tiles from the start)."
        ],
        "devNote": [
          "There is a dropoff in Samus' jump height at an extra run speed of $5.2, which is good here.",
          "Starting at a distance of 30 tiles, there is a 3-frame window for the jump (giving extra run speeds between $5.2 and $5.4)",
          "and between a 1-frame and 6-frame window for the morph (with later jumps giving a larger window)."
        ]
      },
      {
        "minHeight": 2,
        "maxHeight": 2,
        "minTiles": 45,
        "speedBooster": true,
        "obstructions": [
          [
            4,
            0
          ]
        ],
        "requires": [
          "canInsaneJump",
          "canMomentumConservingMorph",
          "canInsaneMidAirMorph",
          "canKago",
          "canBeExtremelyPatient",
          {
            "enemyDamage": {
              "enemy": "Sciser",
              "type": "contact",
              "hits": 1
            }
          }
        ],
        "note": [
          "Applies to Baby Kraid Room.",
          "Jump through the door with a double frame-perfect ceiling mockball, with a last-frame jump and last-frame morph.",
          "Unmorph before bonking the ceiling, then quickly morph again, kagoing the crab, and exiting through the tunnel on the right."
        ]
      }
    ]
  }
}

Requires:

"canCrossRoomJumpIntoWater"
"Morph"