tr2: port Lift_Floor

walkawayy · Oct 22, 2024 · 2e2eb1f · 2e2eb1f
1 parent caeb329
commit 2e2eb1f
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Showing 6 changed files with 24 additions and 10 deletions.
diff --git a/docs/tr2/progress.svg b/docs/tr2/progress.svg
diff --git a/docs/tr2/progress.txt b/docs/tr2/progress.txt
@@ -3588,7 +3588,7 @@ typedef enum {
 0x00435700  0x0035  +       void __cdecl Lift_Initialise(int16_t item_num);
 0x00435740  0x00D4  +       void __cdecl Lift_Control(int16_t item_num);
 0x00435820  0x0179  +       void __cdecl Lift_FloorCeiling(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *floor, int32_t *ceiling);
-0x004359A0  0x0035  -       void __cdecl Lift_Floor(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height);
+0x004359A0  0x0035  +       void __cdecl Lift_Floor(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height);
 0x004359E0  0x0035  -       void __cdecl Lift_Ceiling(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height);
 0x00435A20  0x0016  -R      void __cdecl BridgeFlatFloor(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height);
 0x00435A40  0x001B  -R      void __cdecl BridgeFlatCeiling(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height);

diff --git a/src/tr2/game/objects/general/lift.c b/src/tr2/game/objects/general/lift.c
@@ -140,3 +140,15 @@ void __cdecl Lift_FloorCeiling(
         }
     }
 }
+
+void __cdecl Lift_Floor(
+    const ITEM *const item, const int32_t x, const int32_t y, const int32_t z,
+    int32_t *const out_height)
+{
+    int32_t floor;
+    int32_t height;
+    Lift_FloorCeiling(item, x, y, z, &floor, &height);
+    if (floor < *out_height) {
+        *out_height = floor;
+    }
+}
diff --git a/src/tr2/game/objects/general/lift.h b/src/tr2/game/objects/general/lift.h
@@ -12,3 +12,5 @@ void __cdecl Lift_Control(int16_t item_num);
 void __cdecl Lift_FloorCeiling(
     const ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *out_floor,
     int32_t *out_ceiling);
+void __cdecl Lift_Floor(
+    const ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *out_height);
diff --git a/src/tr2/global/funcs.h b/src/tr2/global/funcs.h
@@ -121,7 +121,6 @@
 #define DrawBridgeFloor ((void __cdecl (*)(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height))0x00435650)
 #define DrawBridgeCeiling ((void __cdecl (*)(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height))0x00435690)
 #define DrawBridgeCollision ((void __cdecl (*)(int16_t item_num, ITEM *lara_item, COLL_INFO *coll))0x004356D0)
-#define Lift_Floor ((void __cdecl (*)(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height))0x004359A0)
 #define Lift_Ceiling ((void __cdecl (*)(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height))0x004359E0)
 #define BridgeFlatFloor ((void __cdecl (*)(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height))0x00435A20)
 #define BridgeFlatCeiling ((void __cdecl (*)(ITEM *item, int32_t x, int32_t y, int32_t z, int32_t *height))0x00435A40)

diff --git a/src/tr2/inject_exec.c b/src/tr2/inject_exec.c
@@ -1020,6 +1020,7 @@ static void M_Objects(const bool enable)
     INJECT(enable, 0x00435700, Lift_Initialise);
     INJECT(enable, 0x00435740, Lift_Control);
     INJECT(enable, 0x00435820, Lift_FloorCeiling);
+    INJECT(enable, 0x004359A0, Lift_Floor);
     INJECT(enable, 0x00435D70, Detonator_Control);
     INJECT(enable, 0x00437E70, Pickup_Collision);
     INJECT(enable, 0x004382F0, Switch_Collision);