Studio part 0 is the head; rig hold, aim and cull

[sp00ktober]

Part 0 is the head in the studio, and the rig can drive a hit on a chosen bone. For sp00ktober/MHFU-ModKit#113 and #114.

• Studio: part 0 is a part like any other. Landing on a part-0 hurtbox selects it, PARTS_UNNAMED counts it, it draws in its own colour, and HURTBOX_NO_PART says a part-less hurtbox ships as part 0.
• mhfu rig hold: SCRIPT_WAIT is set to its maximum. The monster finishes its move and waits in a hub. Reactions still play, and the first one ends the hold.
• mhfu rig aim BONE: puts the player before a bone, facing it. The monster is turned so the bone faces the player, then the player is teleported, which keeps the facing.
• --cull on rig pin/walk, and Guard(cull_small=): sets small monsters' HP to 0 in the player's section.

Live in lane 5, on a native Tigrex in Sinking Feeling, using only these helpers:

• the tail was cut in 30 swings with no counter preset (the tail's hurtboxes were enlarged and its damage intake raised through the shell);
• tail_cut fired one AI frame after SEVERED.

Offscreen, the Zinogre's head hurtbox (part 0) draws pink, raises no part findings, and landing on it selects part 0.

Tests: the full suite passes with both games' data, the touched tests pass in a Linux container, and pre-commit is clean.

🤖 Generated with Claude Code