tr2: port SkidooArmed_Collision

LostArtefacts · Oct 22, 2024 · 8e5e0fa · 8e5e0fa
1 parent 6aadd6c
commit 8e5e0fa
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Showing 6 changed files with 38 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
@@ -3677,7 +3677,7 @@ typedef enum {
 0x0043ED40  0x007F  +       void __cdecl SkidooDriver_Initialise(int16_t item_num);
 0x0043EDD0  0x03E2  +       void __cdecl SkidooDriver_Control(int16_t rider_num);
 0x0043F1D0  0x0119  +       void __cdecl SkidooArmed_Push(const ITEM *item, ITEM *lara_item, int32_t radius);
-0x0043F2F0  0x0081  -       void __cdecl SkidooArmed_Collision(int16_t item_num, ITEM *lara_item, COLL_INFO *coll);
+0x0043F2F0  0x0081  +       void __cdecl SkidooArmed_Collision(int16_t item_num, ITEM *lara_item, COLL_INFO *coll);
 
 # game/sound.c
 0x0043F380  0x0031  *       int32_t __cdecl Music_GetRealTrack(int32_t track);

diff --git a/src/tr2/game/objects/vehicles/skidoo_armed.c b/src/tr2/game/objects/vehicles/skidoo_armed.c
@@ -1,6 +1,8 @@
 #include "game/objects/vehicles/skidoo_armed.h"
 
 #include "game/items.h"
+#include "game/lara/control.h"
+#include "game/lara/misc.h"
 #include "game/math.h"
 #include "game/objects/creatures/skidoo_driver.h"
 #include "global/funcs.h"
@@ -70,3 +72,26 @@ void __cdecl SkidooArmed_Push(
     lara_item->pos.x = item->pos.x + ((rz * sy + rx * cy) >> W2V_SHIFT);
     lara_item->pos.z = item->pos.z + ((rz * cy - rx * sy) >> W2V_SHIFT);
 }
+
+void __cdecl SkidooArmed_Collision(
+    const int16_t item_num, ITEM *const lara_item, COLL_INFO *const coll)
+{
+    ITEM *const item = Item_Get(item_num);
+    if (!Item_TestBoundsCollide(item, lara_item, coll->radius)) {
+        return;
+    }
+
+    if (!Collide_TestCollision(item, lara_item)) {
+        return;
+    }
+
+    if (coll->enable_baddie_push) {
+        Lara_Push(
+            item, lara_item, coll, item->speed > 0 ? coll->enable_spaz : false,
+            false);
+    }
+
+    if (g_Lara.skidoo == NO_ITEM && item->speed > 0) {
+        Lara_TakeDamage(100, true);
+    }
+}
diff --git a/src/tr2/game/objects/vehicles/skidoo_armed.h b/src/tr2/game/objects/vehicles/skidoo_armed.h
@@ -6,3 +6,6 @@ void SkidooArmed_Setup(void);
 
 void __cdecl SkidooArmed_Push(
     const ITEM *item, ITEM *lara_item, int32_t radius);
+
+void __cdecl SkidooArmed_Collision(
+    int16_t item_num, ITEM *lara_item, COLL_INFO *coll);
diff --git a/src/tr2/global/funcs.h b/src/tr2/global/funcs.h
@@ -171,7 +171,6 @@
 #define DoShift ((int32_t __cdecl (*)(ITEM *skidoo, XYZ_32 *pos, XYZ_32 *old))0x0043D320)
 #define DoDynamics ((int32_t __cdecl (*)(int32_t height, int32_t fall_speed, int32_t *y))0x0043D5A0)
 #define GetCollisionAnim ((int32_t __cdecl (*)(ITEM *skidoo, XYZ_32 *moved))0x0043D600)
-#define SkidooArmed_Collision ((void __cdecl (*)(int16_t item_num, ITEM *lara_item, COLL_INFO *coll))0x0043F2F0)
 #define Music_GetRealTrack ((int32_t __cdecl (*)(int32_t track))0x0043F380)
 #define Collide_TestCollision ((int32_t __cdecl (*)(ITEM *item, const ITEM *lara_item))0x0043F9B0)
 #define Collide_GetSpheres ((int32_t __cdecl (*)(const ITEM *item, SPHERE *spheres, bool world_space))0x0043FAE0)

diff --git a/src/tr2/inject_exec.c b/src/tr2/inject_exec.c
@@ -1032,6 +1032,7 @@ static void M_Objects(const bool enable)
     INJECT(enable, 0x0043ED40, SkidooDriver_Initialise);
     INJECT(enable, 0x0043EDD0, SkidooDriver_Control);
     INJECT(enable, 0x0043F1D0, SkidooArmed_Push);
+    INJECT(enable, 0x0043F2F0, SkidooArmed_Collision);
     INJECT(enable, 0x00442B30, FlameEmitter_Control);
     INJECT(enable, 0x00442BC0, Flame_Control);
     INJECT(enable, 0x00442E70, EmberEmitter_Control);