#!/usr/bin/env python3
"""Generates maps/level1.tmx (Tiled-compatible) for the test platformer level.

Tile legend:
  G = grass top   (GID 1, green box)
  # = dirt        (GID 2, brown box)
  S = stone       (GID 3, grey box)
"""
import os

W, H = 64, 32

grid = [["."] * W for _ in range(H)]


def fill(x0, y0, x1, y1, ch):
    for y in range(y0, y1 + 1):
        for x in range(x0, x1 + 1):
            grid[y][x] = ch


# Ground: rows 29-31, with two gaps (cols 18-21 and 44-47)
fill(0, 29, 17, 31, "#")
grid[29][0:18] = ["G"] * 18
fill(22, 29, 43, 31, "#")
grid[29][22:44] = ["G"] * 22
fill(48, 29, 63, 31, "#")
grid[29][48:64] = ["G"] * 16

# Small dirt step near spawn
fill(3, 27, 4, 28, "#")

# Stone platform ladder (each step <= 3 tiles up, gaps of ~2 tiles)
fill(6, 25, 10, 25, "S")    # P1
fill(13, 22, 17, 22, "S")   # P2
fill(20, 19, 24, 19, "S")   # P3 (high left)
fill(26, 25, 30, 25, "S")   # P4
fill(33, 22, 37, 22, "S")   # P5
fill(40, 19, 44, 19, "S")   # P6 (high right)
fill(47, 16, 51, 16, "S")   # P7 (topmost)

LEGEND = {"G": 1, "#": 2, "S": 3, ".": 0}

rows_csv = []
for row in grid:
    rows_csv.append(",".join(str(LEGEND[c]) for c in row))
csv_data = "\n      ".join(rows_csv)

tmx = f'''<?xml version="1.0" encoding="UTF-8"?>
<map version="1.10" orientation="orthogonal" renderorder="right-down" width="{W}" height="{H}" tilewidth="16" tileheight="16">
 <tileset firstgid="1" name="basic" tilewidth="16" tileheight="16" columns="3">
  <image source="../tiles/basic.png" width="48" height="16"/>
 </tileset>
 <layer name="terrain" width="{W}" height="{H}">
  <data encoding="csv">
      {csv_data}
  </data>
 </layer>
</map>
'''

out = os.path.join(os.path.dirname(__file__), "..", "maps", "level1.tmx")
with open(out, "w") as f:
    f.write(tmx)
print(f"wrote {os.path.abspath(out)} ({W}x{H})")