38 lines
3.0 KiB
Markdown
38 lines
3.0 KiB
Markdown
# AGENTS.md
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## Project
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"Light & Dark" — a 2D light/shade platformer prototype (Python 3.10 + pygame).
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- Main game: `light_and_dark/main.py` (single large file, ~8000 lines, no tests)
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- Level editor: `light_and_dark/level_editor_v43.html` (standalone HTML/JS, no build step)
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- Levels: `light_and_dark/data/world/rooms/room_0N.json`
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- Data/config: `light_and_dark/data/config/*.json`, `data/items/*.json`, `data/objects/*.json`, `data/enemies/*.json`
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## Standard session start
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1. `git status` + `git log --oneline -5` to see uncommitted/untracked work (rooms 4-6 are untracked/WIP).
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2. Read the specific file(s) the request touches before editing; follow existing style.
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3. After edits, always verify (see below).
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## Verification
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- `python -m py_compile light_and_dark/main.py` (must pass after any edit)
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- Validate touched JSON: `python -c "import json; json.load(open('<path>', encoding='utf-8'))"`
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- To confirm the game boots: run `python light_and_dark/main.py` with a short timeout; no traceback in the first lines = OK (the window blocks, so it will time out).
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## Pitfalls / conventions
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- **Python booleans are `True`/`False`** — never `true`/`false` in main.py (this once crashed startup). JSON files use lowercase `true`.
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- Don't add code comments unless asked. Match surrounding style.
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- Rooms load through `normalize_room_json` + `Room` (main.py) which rewrite JSON into the game format; keep new room JSON keys mirrored there (e.g. trigger/ability-door flags).
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## Key systems (in main.py unless noted)
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- **Saves**: lantern-only. `save_game` / `apply_save_data`. Quest progress, broken doors, defeated bosses persist ONLY on lantern interaction.
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- **Trigger walls** (`trigger_wall_blocking`): meta keys `quest`, `quest_complete`, `quest_turned_in`, `lock_when_pass` (appears once walked through), `open_on_miniboss_dead`.
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- **Ability doors** (`AbilityDoor`): `kind` = `"ranged"` (shot open, persists in `broken_doors`) or `"shade"` (solid in light, passable in shade + a `shade_door_grace` window after form switch; ejected to nearest edge after grace).
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- **Quests** (`QUEST_DEFS_DEFAULT`): objective `"shade": True` counts kills only in shade form. Rewards via `guaranteed_item` (one-time) or `pool` (repeatable). Items by `item_id` (e.g. `necklace_placeholder` = "Plain Necklace").
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- **Minibosses**: stay defeated per room (`DEFEATED_MINIBOSSES`) until a lantern save in a different room, then respawn.
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- **Enemies**: insta-die on hazard contact with no drops (`hazard_kill` flag); normal enemies respawn on room re-entry.
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- **Chests** (`RewardChest`): spawn coin `CoinPickup`s above the chest top (not center, which clips into the platform).
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- **Shade-kills quest** (`first_kills_shade` in room 6): interactable/prompted only while in shade form (`QuestManager.requires_shade`).
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## Editor (level_editor_v43.html)
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- Link lines: `drawLinkLinesForCanvas` — exits with a `spawn_id` missing in the target room draw NO line (avoids stale-coordinate artifacts).
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- Keyboard shortcuts live in the `window keydown` handler: V/P/E/N/O switch tools, F fit, Esc deselect, Ctrl+Z/Y/C/X/V/D. |