Implement edit functions + functions around camera + ... (#146)

* Fix SEGFAULT due to reading out of bounds (we were using wrong index)

* Use floats instead of doubles

* Implement all flicplay.c functions

* Compare ptr against NULL

* Implement TotalRepair

* Implement some edit functions

* Implement actor/special volume related edit functions

* Implement MungeSpecialVolume

* Implement a few depth functions

* Fix location of spawned actors (when SHIFT was not pressed)

Co-authored-by: Dethrace Engineering Department <78985374+dethrace-labs@users.noreply.github.com>

Author: madebr

src/BRSRC13/include/brender/brender.h

@@ -12,6 +12,7 @@ extern struct br_font* BrFontProp7x9;
 // BrActor
 br_actor* BrActorLoad(char* filename);
 br_uint_32 BrActorLoadMany(char* filename, br_actor** actors, br_uint_16 num);
+br_uint_32 BrActorSave(char* filename, br_actor* ptr);
 br_actor* BrActorAllocate(br_uint_8 type, void* type_data);
 br_actor* BrActorAdd(br_actor* parent, br_actor* a);
 void BrActorRelink(br_actor* parent, br_actor* a);
@@ -77,6 +78,7 @@ void BrMatrix34Copy(br_matrix34* A, br_matrix34* B);
 void BrMatrix34PreRotateY(br_matrix34* mat, br_angle ry);
 void BrMatrix34RotateY(br_matrix34* mat, br_angle ry);
 void BrMatrix34PostScale(br_matrix34* mat, br_scalar sx, br_scalar sy, br_scalar sz);
+void BrMatrix34PreScale(br_matrix34* mat, br_scalar sx, br_scalar sy, br_scalar sz);
 void BrMatrix34PreTransform(br_matrix34* mat, br_transform* xform);
 void BrMatrix34PostTransform(br_matrix34* mat, br_transform* xform);
 void BrMatrix34PreRotateX(br_matrix34* mat, br_angle rx);
@@ -118,6 +120,7 @@ br_model* BrModelLoad(char* filename);
 void BrModelFree(br_model* model);
 void BrModelUpdate(br_model* model, br_uint_16 flags);
 br_uint_32 BrModelLoadMany(char* filename, br_model** models, br_uint_16 num);
+br_uint_32 BrModelSaveMany(char* filename, br_model** models, br_uint_16 num);
 br_model_find_cbfn* BrModelFindHook(br_model_find_cbfn* hook);
 
 // BrPixelmap

src/DETHRACE/common/car.c

@@ -1206,7 +1206,26 @@ void MungeSpecialVolume(tCollision_info* pCar) {
     tCar_spec* car;
     LOG_TRACE("(%p)", pCar);
 
-    STUB_ONCE();
+    new_special_volume = FindSpecialVolume(&pCar->pos, pCar->last_special_volume);
+    if (pCar->auto_special_volume != NULL && (new_special_volume == NULL || new_special_volume->gravity_multiplier == 1.f)) {
+        if (pCar->water_d == 10000.f && pCar->water_depth_factor != 1.f) {
+            pCar->auto_special_volume = NULL;
+        } else {
+            new_special_volume = pCar->auto_special_volume;
+        }
+    }
+    if (pCar->last_special_volume != new_special_volume && pCar->driver == eDriver_local_human) {
+        if (pCar->last_special_volume != NULL && pCar->last_special_volume->exit_noise >= 0 && (new_special_volume == NULL || pCar->last_special_volume->exit_noise != new_special_volume->exit_noise)) {
+            DRS3StartSound(gCar_outlet, pCar->last_special_volume->exit_noise);
+        }
+        if (new_special_volume != NULL && new_special_volume->entry_noise >= 0 && (pCar->last_special_volume == NULL || pCar->last_special_volume->entry_noise != new_special_volume->entry_noise)) {
+            DRS3StartSound(gCar_outlet, new_special_volume->entry_noise);
+        }
+    }
+    pCar->last_special_volume = new_special_volume;
+    if (new_special_volume != NULL && pCar->num_smoke_columns != 0 && pCar->last_special_volume != NULL && pCar->last_special_volume->gravity_multiplier < 1.f) {
+        StopCarSmoking((tCar_spec*)pCar);
+    }
 }
 
 // IDA: void __usercall ResetCarSpecialVolume(tCollision_info *pCar@<EAX>)