First simple test with scratch memory, just to verify that it works.

memory.c

@@ -15,14 +15,14 @@ void mem_scratch_reset()
     scratch = scratch_start;
 }
 
-char *mem_scratch(unsigned short size)
+void *mem_scratch(unsigned short size)
 {
 #if _DEBUG
     if (scratch + size > scratch_start + 1024)
         return NULL;
 #endif
 
-    char *result = scratch;
+    void *result = scratch;
     scratch += size;
     return result;
 }

memory.h

@@ -7,7 +7,7 @@
  * @param size The number of bytes to allocate. Be aware that the scratchpad memory only has 1024 bytes available.
  * @return Pointer to the allocated buffer in scratchpad memory.
  */
-char *mem_scratch(unsigned short size);
+void *mem_scratch(unsigned short size);
 
 void mem_scratch_reset();
 

world.c

@@ -40,13 +40,15 @@ void world_load(const u_long *data, world_t *world)
 
 void world_draw(const world_t *world)
 {
-    SVECTOR vecs[3];
     int p;
 
     // The world doesn't move, so we just set the camera view-projection matrix
     gte_SetRotMatrix(&vp_matrix);
 	gte_SetTransMatrix(&vp_matrix);
 
+    mem_scratch_reset();
+    SVECTOR *vecs = mem_scratch(sizeof(SVECTOR) * 3);
+
     for (int faceIdx = 0; faceIdx < world->header->numFaces; ++faceIdx)
     {
         const ps1bsp_face_t *face = &world->faces[faceIdx];