Aimbot: fix eye height (m_vecViewOffset Z, not X); prefer head hitbox

- g_cam_eye was adding the X component of m_vecViewOffset to Z, leaving the
  eye ~64 units too low; the aimbot consequently aimed above heads
- head_position now prefers the HITGROUP_HEAD hitbox center before falling
  back to bone names (zombie: headcrab body hitbox)
- log the exact head and desired angles for the first few aim ticks

1 files changed, 6 insertions, 0 deletions

diff --git a/src/bones.cpp b/src/bones.cpp
index f33a4b2..abcaac6 100644
--- a/src/bones.cpp
+++ b/src/bones.cpp
@@ -439,6 +439,12 @@ bool head_position(int idx, Vector &out) {
   const HitboxSet *s = hitbox_set0(e->hdr);
   if (s) {
     const Hitbox *boxes = hitboxes(s);
+    // HITGROUP_HEAD == 1. HL2 models often have no hitbox names, so use the
+    // damage-group head hitbox first (zombie: headcrab body, humanoids: head).
+    for (int i = 0; i < s->numhitboxes; i++) {
+      if (boxes[i].group == 1 && hitbox_world(e, boxes[i], out))
+        return true;
+    }
     for (int i = 0; i < s->numhitboxes; i++) {
       if (boxes[i].bone < 0 || boxes[i].bone >= e->count)
         continue;