refine diagonal bomb jump strats

Author: kjbranch

region/brinstar/red/Red Brinstar Fireflea Room.json

@@ -1237,8 +1237,9 @@
           "canLongIBJ",
           "canJumpIntoIBJ"
         ]},
-        "canHBJ"
-      ]
+        "canDiagonalBombJump"
+      ],
+      "note": "Perform an HBJ at the top of an IBJ. This is basically a very short diagonal bomb jump."
     },
     {
       "id": 61,

region/maridia/inner-pink/East Cactus Alley.json

@@ -471,6 +471,7 @@
           "h_artificialMorphLongIBJ",
           "h_artificialMorphJumpIntoIBJ"
         ]},
+        "h_artificialMorphDiagonalBombJump",
         "h_artificialMorphHBJ"
       ],
       "flashSuitChecked": true,
@@ -722,22 +723,23 @@
         {"or": [
           "SpaceJump",
           "canWalljump",
-          "h_IBJFromSpikes",
-          {"and": [
-            "canIBJ",
-            {"or": [
-              "canLongIBJ",
-              "canJumpIntoIBJ"
-            ]},
-            "canHBJ"
-          ]},
-          {"and": [
-            "canDiagonalBombJump",
-            "canLongIBJ"
-          ]}
+          "h_IBJFromSpikes"
         ]}
       ]
     },
+    {
+      "link": [2, 4],
+      "name": "IBJ Into HBJ",
+      "requires": [
+        "Gravity",
+        "canDiagonalBombJump",
+        {"or": [
+          "canLongIBJ",
+          "canJumpIntoIBJ"
+        ]}
+      ],
+      "note": "Perform an HBJ at the top of an IBJ. This is basically a very short diagonal bomb jump."
+    },
     {
       "id": 20,
       "link": [2, 4],

tech.json

@@ -1464,7 +1464,11 @@
                 "canIBJ"
               ],
               "otherRequires": [],
-              "note": "The ability to IBJ with backspin which results in an IBJ with diagonal movement."
+              "note": [
+                "The ability to IBJ with backspin which results in an IBJ with diagonal movement.",
+                "This also includes the ability to HBJ at the top of an IBJ."
+              ],
+              "devNote": "This does not include low incline diagonal bomb jumps, at less than around 45 degrees. Those are significantly harder."
             },
             {
               "id": 96,