def create_map():
"""
Create a map with a square island (20x20) at position (20, 20) and return the path
to the database file.
"""
# Create island.
fd, islandfile = tempfile.mkstemp()
os.close(fd)
db = DbReader(islandfile)
db("CREATE TABLE ground(x INTEGER NOT NULL, y INTEGER NOT NULL, ground_id INTEGER NOT NULL, action_id TEXT NOT NULL, rotation INTEGER NOT NULL)")
db("CREATE TABLE island_properties(name TEXT PRIMARY KEY NOT NULL, value TEXT NOT NULL)")
db("BEGIN TRANSACTION")
tiles = []
for x, y in Rect.init_from_topleft_and_size(0, 0, 20, 20).tuple_iter():
if (0 < x < 20) and (0 < y < 20):
ground = GROUND.DEFAULT_LAND
else:
# Add coastline at the borders.
ground = GROUND.SHALLOW_WATER
tiles.append([x, y] + list(ground))
db.execute_many("INSERT INTO ground VALUES(?, ?, ?, ?, ?)", tiles)
db("COMMIT")
# Create savegame with the island above.
fd, savegame = tempfile.mkstemp()
os.close(fd)
db = DbReader(savegame)
read_savegame_template(db)
db("BEGIN TRANSACTION")
db("INSERT INTO island (x, y, file) VALUES(?, ?, ?)", 20, 20, islandfile)
db("COMMIT")
return savegame
