Fix tooltip truncation; add Stucklaunch assist

Tooltips: text_in() shifted the x position to fit the full string before
truncating, which drew the tooltip text outside its box. Truncate to the
available width first, then clamp inside the clip.

Stucklaunch (Movement):
- opt-in feature (Active off by default) with its own bind;
- holds jump, alternates +use every 2 ticks to regrab a physics prop,
  optionally +attack while the gravity gun is active, and air-strafes;
- engagement uses m_hGroundEntity (client netvar) latched for ~0.5 s so the
  prop stays active while airborne; falls back to running whenever active if
  the netvar is unavailable, with a startup warning to bind it;
- does not spawn or place props; the player supplies the prop and initial
  speed.

Config gets [stucklaunch] active/bind/use_spam/gravspam/autostrafe; Reset
restores those defaults. CONTEXT documents the assist and its limits.

1 files changed, 34 insertions, 0 deletions

diff --git a/src/esp.cpp b/src/esp.cpp
index 64ee83f..bda6232 100644
--- a/src/esp.cpp
+++ b/src/esp.cpp
@@ -1131,6 +1131,40 @@ static void spread_compute() {
   g_spread_ready = true;
 }
 
+bool entity_is_physics_prop(int idx) {
+  if (idx <= 0 || idx > 4096)
+    return false;
+  void *net = entity_networkable(idx);
+  const char *cls = net ? entity_class_name(net, nullptr) : nullptr;
+  void *ent = entitylist_get(idx);
+  const char *model = ent ? entity_model_name(ent) : nullptr;
+  if (cls && (strstr(cls, "prop_physics") || strstr(cls, "physbox")))
+    return true;
+  if (model && (strstr(model, "props_junk") || strstr(model, "props_physics")))
+    return true;
+  return false;
+}
+
+bool active_weapon_is_gravity_gun(void *local_ent) {
+  if (!local_ent || g_net.activeweapon < 0)
+    return false;
+  uint32_t h = *(uint32_t *)((uintptr_t)local_ent + g_net.activeweapon);
+  if (h == 0xFFFFFFFFu)
+    return false;
+  int idx = (int)(h & 0xFFFF);
+  if (idx <= 0 || idx > 4096)
+    return false;
+  void *wep = entitylist_get(idx);
+  void *net = entity_networkable(idx);
+  const char *cls = net ? entity_class_name(net, nullptr) : nullptr;
+  const char *model = wep ? entity_model_name(wep) : nullptr;
+  if (cls && strstr(cls, "physcannon"))
+    return true;
+  if (model && (strstr(model, "physcannon") || strstr(model, "w_physics")))
+    return true;
+  return false;
+}
+
 static bool active_weapon_is_shotgun(void *local_ent) {
   if (!local_ent || g_net.activeweapon < 0)
     return false;