# MIT License
# 
# Copyright (c) 2026 Tidepost contributors
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# 
# Exception: assets/glyphs.json contains rasterized glyph data derived from
# Noto Sans CJK JP (SIL Open Font License 1.1). See assets/NOTO-LICENSE.txt.
# Pyxel is an external dependency under its own MIT license.

"""rows[row][col]で読む前に、二つの範囲を確認する。Pyxel不要。"""
ROWS = ("#####", "#..G#", "#####")
assert ROWS and all(len(row)==len(ROWS[0]) for row in ROWS)


def tile_at(col, row):
    if not (0<=row<len(ROWS) and 0<=col<len(ROWS[0])):
        return None
    return ROWS[row][col]


def main():
    print("width,height:", (len(ROWS[0]), len(ROWS)))
    for cell in ((0,0), (3,1), (-1,1), (5,1)):
        print("cell", cell, "->", tile_at(*cell))
    print("raw negative index:", ROWS[1][-1])


if __name__ == "__main__":
    main()