+void
+remove_entity_overwrites(entity *ent, entity *overwritten) {
+ int i;
+ assert(ent && is_class_type(get_entity_owner(ent)));
+ for (i = 1; i < (ARR_LEN (ent->overwrites)); i++)
+ if (ent->overwrites[i] == overwritten) {
+ for(; i < (ARR_LEN (ent->overwrites))-1; i++)
+ ent->overwrites[i] = ent->overwrites[i+1];
+ ARR_SETLEN(entity*, ent->overwrites, ARR_LEN(ent->overwrites) - 1);
+ break;
+ }
+}
+
+INLINE void
+add_entity_overwrittenby (entity *ent, entity *overwrites) {
+ assert(ent);
+ assert(is_class_type(get_entity_owner(ent)));
+ add_entity_overwrites(overwrites, ent);
+}
+
+INLINE int
+get_entity_n_overwrittenby (entity *ent) {
+ assert(ent);
+ assert(is_class_type(get_entity_owner(ent)));
+ return (ARR_LEN (ent->overwrittenby))-1;
+}
+
+int
+get_entity_overwrittenby_index(entity *ent, entity *overwrites) {
+ int i;
+ assert(ent && is_class_type(get_entity_owner(ent)));
+ for (i = 0; i < get_entity_n_overwrittenby(ent); i++)
+ if (get_entity_overwrittenby(ent, i) == overwrites)
+ return i;
+ return -1;
+}
+
+INLINE entity *
+get_entity_overwrittenby (entity *ent, int pos) {
+ assert(ent);
+ assert(is_class_type(get_entity_owner(ent)));
+ assert(pos < get_entity_n_overwrittenby(ent));
+ return ent->overwrittenby[pos+1];
+}
+
+INLINE void
+set_entity_overwrittenby (entity *ent, int pos, entity *overwrites) {
+ assert(ent);
+ assert(is_class_type(get_entity_owner(ent)));
+ assert(pos < get_entity_n_overwrittenby(ent));
+ ent->overwrittenby[pos+1] = overwrites;
+}
+
+void remove_entity_overwrittenby(entity *ent, entity *overwrites) {
+ int i;
+ assert(ent && is_class_type(get_entity_owner(ent)));
+ for (i = 1; i < (ARR_LEN (ent->overwrittenby)); i++)
+ if (ent->overwrittenby[i] == overwrites) {
+ for(; i < (ARR_LEN (ent->overwrittenby))-1; i++)
+ ent->overwrittenby[i] = ent->overwrittenby[i+1];
+ ARR_SETLEN(entity*, ent->overwrittenby, ARR_LEN(ent->overwrittenby) - 1);
+ break;
+ }
+}
+