Stucklaunch: fix prop detection and add diagnostics

- Client physics props are CPhysicsProp/CPhysBox, not the server class
  prop_physics; the old case-sensitive class check never matched. Detect
  MOVETYPE_VPHYSICS first (the reliable signal), then case-insensitive
  class/model patterns.
- Log the first few prop checks with index, movetype, class and model so a
  failed ground lookup is diagnosable.
- Log once when Stucklaunch is active (with run state, bind and ground
  offset), when it engages, and when the ground is not a prop.
- Toast a warning when binding a feature that is not Active yet.

1 files changed, 27 insertions, 2 deletions

diff --git a/src/hl2h.cpp b/src/hl2h.cpp
index 84de815..defdd27 100644
--- a/src/hl2h.cpp
+++ b/src/hl2h.cpp
@@ -172,8 +172,14 @@ static void apply_autostrafe(CUserCmd *cmd, const float *vel) {
 // True while the player stands on (or just left) a physics prop. m_hGroundEntity
 // is latched briefly because it clears during each hop.
 static bool stucklaunch_prop_ok(void *ent, int tick) {
-  if (g_net.groundentity < 0)
+  if (g_net.groundentity < 0) {
+    static bool logged = false;
+    if (!logged) {
+      logged = true;
+      logf("stucklaunch: m_hGroundEntity unavailable; prop detection off");
+    }
     return true; // no netvar: the bind is the only safeguard
+  }
   static int last_prop_tick = -100000;
   uint32_t h = *(uint32_t *)((uintptr_t)ent + g_net.groundentity);
   int gi = (h == 0xFFFFFFFFu) ? 0 : (int)(h & 0xFFFF);
@@ -182,9 +188,15 @@ static bool stucklaunch_prop_ok(void *ent, int tick) {
     static int prop_logs = 0;
     if (prop_logs < 4) {
       prop_logs++;
-      logf("stucklaunch: prop idx=%d", gi);
+      logf("stucklaunch: prop idx=%d engaged", gi);
     }
     last_prop_tick = tick;
+  } else {
+    static int miss_logs = 0;
+    if (miss_logs < 4) {
+      miss_logs++;
+      logf("stucklaunch: ground h=%#x idx=%d is not a physics prop", h, gi);
+    }
   }
   return tick - last_prop_tick < 32; // ~0.5 s at 66 tick
 }
@@ -194,6 +206,11 @@ static bool stucklaunch_prop_ok(void *ent, int tick) {
 // gun's +attack) to keep regrabbing the prop, and air-strafes the hops.
 static void stucklaunch_apply(CUserCmd *cmd, void *local_ent, bool onground,
                               const float *vel) {
+  static bool engaged_logged = false;
+  if (!engaged_logged) {
+    engaged_logged = true;
+    logf("stucklaunch: applying jump/spam (onground=%d)", (int)onground);
+  }
   cmd->buttons |= IN_JUMP;
   int period = stucklaunch_spam_ticks();
   if (period < 1)
@@ -629,6 +646,14 @@ static void do_move(int seq, float frametime) {
   }
 
   bool stuck_on = feature_active(FEAT_STUCKLAUNCH);
+  if (g_stucklaunch.active) {
+    static bool state_logged = false;
+    if (!state_logged) {
+      state_logged = true;
+      logf("stucklaunch: active=1 run=%d bind=%d groundoff=%d",
+           (int)stuck_on, g_stucklaunch.bind, g_net.groundentity);
+    }
+  }
   bool stuck_engaged = stuck_on && stucklaunch_prop_ok(ent, cmd->tick_count);
   if (stuck_engaged) {
     stucklaunch_apply(cmd, ent, onground, vel);