Function is_valid_tree

plugins/autochop.cpp:248–269

}

static bool is_valid_tree(const df::plant *plant) {
    // Skip all non-trees immediately.
    if (!plant->tree_info)
        return false;

    // Skip plants with invalid tile.
    df::map_block *block = Maps::getTileBlock(plant->pos);
    if (!block)
        return false;

    int x = plant->pos.x % 16;
    int y = plant->pos.y % 16;

    // Skip all unrevealed plants.
    if (block->designation[x][y].bits.hidden)
        return false;

    if (tileMaterial(block->tiletype[x][y]) != tiletype_material::TREE)
        return false;

    return true;
}

static bool is_protected(const df::plant * plant, PersistentDataItem &c) {
    const df::plant_raw *plant_raw = df::plant_raw::find(plant->material);