tr2/objects/body-part: fix decomp status

docs/tr2/progress.txt

@@ -3555,7 +3555,7 @@ typedef enum {
 0x00432FE0  0x02D0  -R      void __cdecl Missile_Control(int16_t fx_num);
 0x004332B0  0x00A7  -R      void __cdecl ShootAtLara(FX *fx);
 0x00433360  0x0386  +R      int32_t __cdecl Effect_ExplodingDeath(int16_t item_num, int32_t mesh_bits, int16_t damage);
-0x004336F0  0x0200  -R      void __cdecl BodyPart_Control(int16_t fx_num);
+0x004336F0  0x0200  +R      void __cdecl BodyPart_Control(int16_t fx_num);
 
 # game/moveblock.c
 0x004338F0  0x002C  +       void __cdecl MovableBlock_Initialise(int16_t item_num);

src/tr2/game/objects/effects/body_part.c

@@ -1,6 +1,14 @@
 #include "game/objects/effects/body_part.h"
 
+#include "game/effects.h"
+#include "game/lara/control.h"
+#include "game/lara/misc.h"
+#include "game/math.h"
+#include "game/room.h"
+#include "game/sound.h"
 #include "global/funcs.h"
+#include "global/types.h"
+#include "global/vars.h"
 
 void BodyPart_Setup(void)
 {
@@ -9,3 +17,77 @@ void BodyPart_Setup(void)
     obj->loaded = 1;
     obj->mesh_count = 0;
 }
+
+void __cdecl BodyPart_Control(const int16_t fx_num)
+{
+    FX *const fx = &g_Effects[fx_num];
+    fx->rot.x += 5 * PHD_DEGREE;
+    fx->rot.z += 10 * PHD_DEGREE;
+    fx->pos.x += (fx->speed * Math_Sin(fx->rot.y)) >> W2V_SHIFT;
+    fx->pos.z += (fx->speed * Math_Cos(fx->rot.y)) >> W2V_SHIFT;
+    fx->pos.y += fx->fall_speed;
+    fx->fall_speed += GRAVITY;
+
+    int16_t room_num = fx->room_num;
+    const SECTOR *const sector =
+        Room_GetSector(fx->pos.x, fx->pos.y, fx->pos.z, &room_num);
+
+    if (!(g_Rooms[fx->room_num].flags & RF_UNDERWATER)
+        && (g_Rooms[room_num].flags & RF_UNDERWATER)) {
+        const int16_t fx_num = Effect_Create(fx->room_num);
+        if (fx_num != NO_ITEM) {
+            FX *const splash_fx = &g_Effects[fx_num];
+            splash_fx->pos.x = fx->pos.x;
+            splash_fx->pos.y = fx->pos.y;
+            splash_fx->pos.z = fx->pos.z;
+            splash_fx->rot.y = 0;
+            splash_fx->speed = 0;
+            splash_fx->frame_num = 0;
+            splash_fx->object_id = O_SPLASH;
+        }
+    }
+
+    const int32_t ceiling =
+        Room_GetCeiling(sector, fx->pos.x, fx->pos.y, fx->pos.z);
+    if (fx->pos.y < ceiling) {
+        fx->pos.y = ceiling;
+        fx->fall_speed = -fx->fall_speed;
+    }
+
+    const int32_t height =
+        Room_GetHeight(sector, fx->pos.x, fx->pos.y, fx->pos.z);
+    if (fx->pos.y >= height) {
+        if (fx->counter) {
+            fx->speed = 0;
+            fx->frame_num = 0;
+            fx->counter = 0;
+            fx->object_id = O_EXPLOSION;
+            fx->shade = HIGH_LIGHT;
+            Sound_Effect(SFX_EXPLOSION1, &fx->pos, SPM_NORMAL);
+        } else {
+            Effect_Kill(fx_num);
+        }
+        return;
+    }
+
+    if (Lara_IsNearItem(&fx->pos, 2 * fx->counter)) {
+        Lara_TakeDamage(fx->counter, true);
+
+        if (fx->counter == 0) {
+            fx->speed = 0;
+            fx->frame_num = 0;
+            fx->counter = 0;
+            fx->object_id = O_EXPLOSION;
+            fx->shade = HIGH_LIGHT;
+            Sound_Effect(SFX_EXPLOSION1, &fx->pos, SPM_NORMAL);
+            g_Lara.spaz_effect_count = 5;
+            g_Lara.spaz_effect = fx;
+        } else {
+            Effect_Kill(fx_num);
+        }
+    }
+
+    if (room_num != fx->room_num) {
+        Effect_NewRoom(fx_num, room_num);
+    }
+}

src/tr2/game/objects/effects/body_part.h

@@ -3,3 +3,5 @@
 #include "global/types.h"
 
 void BodyPart_Setup(void);
+
+void __cdecl BodyPart_Control(int16_t fx_num);

src/tr2/global/funcs.h

@@ -94,7 +94,6 @@
 #define Flare_Control ((void __cdecl (*)(int16_t item_num))0x00430070)
 #define Missile_Control ((void __cdecl (*)(int16_t fx_num))0x00432FE0)
 #define ShootAtLara ((void __cdecl (*)(FX *fx))0x004332B0)
-#define BodyPart_Control ((void __cdecl (*)(int16_t fx_num))0x004336F0)
 #define Object_DrawUnclippedItem ((void __cdecl (*)(const ITEM *item))0x004341A0)
 #define Earthquake_Control ((void __cdecl (*)(int16_t item_num))0x00434210)
 #define FinalCutscene_Control ((void __cdecl (*)(int16_t item_num))0x004342F0)

src/tr2/inject_exec.c

@@ -45,10 +45,10 @@
 #include "game/objects/creatures/diver.h"
 #include "game/objects/creatures/dragon.h"
 #include "game/objects/creatures/skidoo_driver.h"
+#include "game/objects/effects/body_part.h"
 #include "game/objects/effects/ember.h"
 #include "game/objects/effects/flame.h"
 #include "game/objects/effects/twinkle.h"
-#include "game/objects/general/body_part.h"
 #include "game/objects/general/bridge_common.h"
 #include "game/objects/general/bridge_flat.h"
 #include "game/objects/general/bridge_tilt_1.h"

src/tr2/meson.build

@@ -174,7 +174,6 @@ dll_sources = [
   'game/objects/general/bell.c',
   'game/objects/general/big_bowl.c',
   'game/objects/general/bird_tweeter.c',
-  'game/objects/general/body_part.c',
   'game/objects/general/bridge_common.c',
   'game/objects/general/bridge_flat.c',
   'game/objects/general/bridge_tilt_1.c',