Grenade trajectory: actual grenade state, full-length path, rounder rings

- Prefer the local player's thrown frag over the pre-throw estimate: resolve
  CBaseGrenade::m_hThrower from the server datamap (client owner handles as
  fallback), then seed the prediction from the live origin/velocity. The real
  frag is a spinning VPhysics box with a random Y angular impulse, so bounce
  points remain approximate; the doc now says so.
- Keep 512 path points sampled every other 20 ms step (up to 24 s) instead of
  127 points / ~2.5 s, so the line reaches the landing instead of stopping in
  mid-air.
- Radius rings use 36 segments; a segment whose near-plane-clipped endpoint
  the engine overlay refuses falls back to the local projection, and that
  projection now uses the configured camera FOV instead of a hardcoded 75
  degrees (the wide-FOV ring no longer kinks/drops pieces).

1 files changed, 1 insertions, 0 deletions

diff --git a/src/hl2h.h b/src/hl2h.h
index 32cee8f..86573d8 100644
--- a/src/hl2h.h
+++ b/src/hl2h.h
@@ -319,6 +319,7 @@ int server_player_ammo(int idx, int type);
 uint32_t server_player_weapon(int idx, int slot);
 float server_grenade_detonate(int idx);
 float server_grenade_radius(int idx);
+int server_grenade_thrower(int idx);
 int server_item_juice(int idx);
 int server_entity_count();
 void *server_entity_base(int idx);