AddActorToArray :: proc(arr: *ArrayOfActors, actor: Actor) {
    if arr.len + 1 > arr.cap {
        new_cap := arr.cap * 2;
        if (new_cap == 0) new_cap = 16;

        arr.data = libc.realloc(arr.data, sizeof(:Actor) * :libc.size_t(new_cap));
        arr.cap  = new_cap;
    }

    arr.data[arr.len] = actor;
    arr.len          += 1;
}

TryGrowingActorArray :: proc(a: *ArrayOfActors) {
    if a.len + 1 > a.cap {
        new_cap := a.cap * 2;
        if (new_cap == 0) new_cap = 16;
        a.data = libc.realloc(a.data, sizeof(:Actor) * :libc.size_t(new_cap));
        a.cap  = new_cap;
    }
}

InsertActor :: proc(a: *ArrayOfActors, item: Actor, index: int) {
    if index == a.len {
        AddActorToArray(a, item);
        return;
    }

    Assert(index < a.len);
    Assert(index >= 0);

    TryGrowingActorArray(a);
    right_len := :libc.size_t(a.len - index);
    libc.memmove(&a.data[index + 1], &a.data[index], sizeof(:Actor) * right_len);
    a.data[index] = item;
    a.len += 1;
}

GetLastActor :: proc(a: ArrayOfActors): *Actor {
    Assert(a.len > 0);
    result := &a.data[a.len - 1];
    return result;
}

//

AddPath :: proc(arr: *ArrayOfPaths, actor: Path) {
    if arr.len + 1 > arr.cap {
        new_cap := arr.cap * 2;
        if (new_cap == 0) new_cap = 16;

        arr.data = libc.realloc(arr.data, sizeof(:Path) * :libc.size_t(new_cap));
        arr.cap  = new_cap;
    }

    arr.data[arr.len] = actor;
    arr.len          += 1;
}

TryGrowingPathArray :: proc(a: *ArrayOfPaths) {
    if a.len + 1 > a.cap {
        new_cap := a.cap * 2;
        if (new_cap == 0) new_cap = 16;
        a.data = libc.realloc(a.data, sizeof(:Path) * :libc.size_t(new_cap));
        a.cap  = new_cap;
    }
}

InsertPath :: proc(a: *ArrayOfPaths, item: Path, index: int) {
    if index == a.len {
        AddPath(a, item);
        return;
    }

    Assert(index < a.len);
    Assert(index >= 0);

    TryGrowingPathArray(a);
    right_len := :libc.size_t(a.len - index);
    libc.memmove(&a.data[index + 1], &a.data[index], sizeof(:Path) * right_len);
    a.data[index] = item;
    a.len += 1;
}

InsertSortedPath :: proc(a: *ArrayOfPaths, item: Path) {
    insert_index := -1;
    for i := 0; i < a.len; i += 1 {
        it := &a.data[i];
        if it.value_to_sort_by <= item.value_to_sort_by {
            insert_index = i;
            InsertPath(a, item, i);
            break;
        }
    }
    if insert_index == -1 {
        AddPath(a, item);
    }
}

GetLastPath :: proc(a: ArrayOfPaths): *Path {
    Assert(a.len > 0);
    result := &a.data[a.len - 1];
    return result;
}

PopPath :: proc(a: *ArrayOfPaths): Path {
    a.len -= 1;
    result := a.data[a.len];
    return result;
}

//

AddV2I :: proc(arr: *ArrayOfV2Is, item: V2I) {
    if arr.len + 1 > arr.cap {
        new_cap := arr.cap * 2;
        if (new_cap == 0) new_cap = 16;

        arr.data = libc.realloc(arr.data, sizeof(:V2I) * :libc.size_t(new_cap));
        arr.cap  = new_cap;
    }

    arr.data[arr.len] = item;
    arr.len          += 1;
}

//

AddAnimationSetTile :: proc(arr: *ArrayOfAnimationSetTiles, item: AnimationSetTile) {
    if arr.len + 1 > arr.cap {
        new_cap := arr.cap * 2;
        if (new_cap == 0) new_cap = 16;

        arr.data = libc.realloc(arr.data, sizeof(:AnimationSetTile) * :libc.size_t(new_cap));
        arr.cap  = new_cap;
    }

    arr.data[arr.len] = item;
    arr.len          += 1;
}

UnorderedRemoveAnimationSetTile :: proc(a: *ArrayOfAnimationSetTiles, item: *AnimationSetTile) {
    Assert(a.len > 0);
    Assert(item >= a.data && item < &a.data[a.len]);
    a.len -= 1;
    *item = a.data[a.len];
}