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DP MOVETYPEFOLLOW
From Quake Wiki
.movetype definitions:
float MOVETYPE_FOLLOW = 12;
MOVETYPE_FOLLOW implemented, this uses existing entity fields in unusual ways:
- aiment - the entity this is attached to.
- punchangle - the original angles when the follow began.
- view_ofs - the relative origin (note that this is un-rotated by punchangle, and that is actually the only purpose of punchangle).
- v_angle - the relative angles.
Here's an example of how you would set a bullet hole sprite to follow a bmodel it was created on, even if the bmodel rotates:
hole.movetype = MOVETYPE_FOLLOW; // make the hole follow hole.solid = SOLID_NOT; // MOVETYPE_FOLLOW is always non-solid hole.aiment = bmodel; // make the hole follow bmodel hole.punchangle = bmodel.angles; // the original angles of bmodel hole.view_ofs = hole.origin - bmodel.origin; // relative origin hole.v_angle = hole.angles - bmodel.angles; // relative angles