Refactor code structure for improved readability and maintainability

.github/instructions/pixel-art-sprite-workflow.instructions.md

@@ -0,0 +1,107 @@
+---
+applyTo: "tools/vernon/**,assets/Rat/**"
+---
+
+# Pixel Art Sprite Workflow — mice project
+
+## Strumenti disponibili
+
+| Script | Uso |
+|--------|-----|
+| `tools/vernon/image_to_json.py <INPUT.png> <OUTPUT.json>` | Converte PNG → matrice JSON RGBA 64×64 |
+| `tools/vernon/json_to_png.py <INPUT.json> <OUTPUT.png>` | Converte matrice JSON RGBA → PNG |
+
+Entrambi usano Pillow e richiedono il `venv` attivo:
+```bash
+source .venv/bin/activate
+```
+
+## Formato JSON
+
+```json
+{
+  "source": "BMP_BOMB0.png",
+  "width": 64,
+  "height": 64,
+  "mode": "RGBA",
+  "pixels": [
+    [ [R, G, B, A], ... ],   // riga 0, 64 pixel
+    ...                       // 64 righe totali
+  ]
+}
+```
+
+Ogni pixel è `[R, G, B, A]` con valori 0–255.
+
+## Convenzioni cromatiche del gioco
+
+- **Colore trasparente (chromakey):** `[128, 128, 128, 192]` — usato come sfondo, il motore lo rende hidden
+- **Alpha standard:** `192` per tutti i pixel visibili (coerente con gli asset originali)
+
+## Workflow iterativo di redesign (passi 0–4)
+
+```
+0. BACKUP  →  prima di sovrascrivere, copia l'originale:
+              cp assets/Rat/<NAME>.png assets/Rat/backup/<NAME>_original.png
+1. image_to_json.py  →  esamina JSON e PNG originale
+2. capire struttura: sfondo, palette, forma principale
+3. modificare JSON (o generarlo via script Python) con:
+   - più livelli di shading (8+ valori invece di 3)
+   - dettagli geometrici aggiuntivi (texture, bordi, ombre interne)
+   - palette più ricca mantenendo stile pixel art (bordi netti, no anti-alias)
+4. json_to_png.py  →  valuta risultato visivo; se non soddisfacente, torna a 3
+```
+
+## Pattern Python per generare JSON programmaticamente
+
+```python
+import json, math
+from pathlib import Path
+
+W, H = 64, 64
+A = 192  # alpha standard
+
+def px(r, g, b): return [r, g, b, A]
+
+TRANSPARENT = px(128, 128, 128)
+grid = [[TRANSPARENT[:] for _ in range(W)] for _ in range(H)]
+
+def put(x, y, col):
+    if 0 <= x < W and 0 <= y < H:
+        grid[y][x] = col[:]
+
+# ... disegna su grid ...
+
+data = {"source": "BMP_X.png", "width": W, "height": H, "mode": "RGBA", "pixels": grid}
+Path("tools/vernon/output/BMP_X_v2.json").write_text(json.dumps(data, indent=2))
+```
+
+## Tecniche pixel art a 64×64
+
+- **Shading sferico:** calcola normale + dot product con luce per N livelli di grigio discreti
+- **Rope/miccia:** traccia bezier quadratica, alterna 2–3 toni in sequenza (effetto intrecciato)
+- **Scintilla:** pixel centrali chiari (bianco/giallo), bordi che degradano in arancio → rosso
+- **Outline:** bordo di 1px nero (`[0,0,0,192]`) attorno a tutte le forme principali
+- **Nessun anti-aliasing:** ogni pixel è un colore solido discreto della palette scelta
+
+## Asset da redesignare (tutti 64×64)
+
+| File | Gruppo |
+|------|--------|
+| `BMP_BOMB0.png` … `BMP_BOMB4.png` | Animazione bomba (0=quieta, 4=accesa) |
+| `BMP_1_GRASS_1.png` … `BMP_1_GRASS_4.png` | Tile erba tema 1 (verde) — **redesignate con FBM 7-toni** |
+| `BMP_2_GRASS_1.png` … `BMP_2_GRASS_4.png` | Tile erba tema 2 (secca/autunnale) |
+| `BMP_3_GRASS_1.png` … `BMP_3_GRASS_4.png` | Tile erba tema 3 (dungeon/pietra) |
+| `BMP_4_GRASS_1.png` … `BMP_4_GRASS_4.png` | Tile erba tema 4 (fuoco/lava) |
+| `BMP_GAS.png`, `BMP_GAS_{DIR}.png` | Gas generico + 4 direzioni |
+| `BMP_EXPLOSION.png`, `BMP_EXPLOSION_{DIR}.png` | Esplosione generica + 4 direzioni |
+| `BMP_NUCLEAR.png` | Fungo nucleare |
+| `BMP_POISON.png` | Veleno |
+
+## Note sull'animazione BOMB (frame 0–4)
+
+- `BOMB0`: bomba ferma, scintilla piccola a riposo
+- `BOMB1`–`BOMB3`: miccia che brucia (la scintilla avanza verso il corpo, la corda si accorcia)
+- `BOMB4`: quasi esplode (glow rosso/arancio sul corpo, scintilla grande)
+
+Per i frame animati: mantieni identici corpo + miccia, varia solo posizione/dimensione scintilla e eventuale glow progressivo.

engine/graphics.py

@@ -2,6 +2,7 @@ import os
 import random
 
 from engine import maze
+from engine.collision_system import CollisionLayer
 from runtime_paths import bundle_path
 
 class Graphics():
@@ -88,6 +89,14 @@ class Graphics():
                     )
                     for direction in ["UP", "DOWN", "LEFT", "RIGHT"]
                 },
+                "explosions": {
+                    direction: self.render_engine.load_image(
+                        f"Rat/BMP_{theme_index}_EXPLOSION_{direction}.png",
+                        transparent_color=((125, 125, 125), (128, 128, 128)),
+                        surface=False,
+                    )
+                    for direction in ["UP", "DOWN", "LEFT", "RIGHT"]
+                },
                 "edges": {
                     direction: self.render_engine.load_image(f"Rat/BMP_{theme_index}_{direction}.png", surface=True)
                     for direction in ["N", "S", "E", "W"]
@@ -112,6 +121,7 @@ class Graphics():
         self.grasses = theme_assets["grasses"]
         self.flowers = theme_assets["flowers"]
         self.caves = theme_assets["caves"]
+        self.explosions = theme_assets["explosions"]
         self.edges = theme_assets["edges"]
         self.corners = theme_assets["corners"]
         self.inner_corners = theme_assets["inner_corners"]
@@ -133,7 +143,18 @@ class Graphics():
         self.draw_blood_layer()
 
     def draw_cave_foreground(self):
-        for surface, x, y in self.cave_foreground_tiles:
+        active_cave_explosions = {}
+        for unit in self.units.values():
+            if unit.collision_layer != CollisionLayer.EXPLOSION:
+                continue
+            if not self.map.is_tunnel(*unit.position):
+                continue
+            active_cave_explosions[unit.position] = getattr(unit, "cave_direction", None)
+
+        for cell_x, cell_y, direction, surface, x, y in self.cave_foreground_tiles:
+            if (cell_x, cell_y) in active_cave_explosions:
+                explosion_direction = active_cave_explosions[(cell_x, cell_y)] or direction
+                surface = self.explosions.get(explosion_direction, surface)
             self.render_engine.draw_image(x, y, surface, anchor="nw", tag="cave")
     
     def draw_blood_layer(self):
@@ -150,8 +171,8 @@ class Graphics():
         def draw(surface, x, y):
             texture_tiles.append((surface, x, y))
 
-        def draw_cave(surface, x, y):
+        def draw_cave(surface, x, y, direction):
-            self.cave_foreground_tiles.append((surface, x, y))
+            self.cave_foreground_tiles.append((x // self.cell_size, y // self.cell_size, direction, surface, x, y))
 
         def occupied(x, y):
             return self.map.in_bounds(x, y) and self.map.get_cell(x, y) != maze.MAP_EMPTY
@@ -259,21 +280,21 @@ class Graphics():
                                     else:
                                         draw(random_flower(), px + half_cell, py + half_cell)
                                 else:
-                                    draw_cave(self.caves["RIGHT"], px, py)
+                                    draw_cave(self.caves["RIGHT"], px, py, "RIGHT")
                             else:
                                 draw(self.grasses[0], px + half_cell, py + half_cell)
-                                draw_cave(self.caves["LEFT"], px, py)
+                                draw_cave(self.caves["LEFT"], px, py, "LEFT")
                         else:
-                            draw_cave(self.caves["DOWN"], px, py)
+                            draw_cave(self.caves["DOWN"], px, py, "DOWN")
                     else:
                         draw(self.grasses[0], px + half_cell, py + half_cell)
-                        draw_cave(self.caves["UP"], px, py)
+                        draw_cave(self.caves["UP"], px, py, "UP")
         
         # Blood stains now handled separately as overlay layer
         self.background_texture = self.render_engine.create_texture(texture_tiles, fill_color=(128, 128, 128))
     
     def add_blood_stain(self, position):
-        """Add a blood stain as sprite overlay (optimized - no background regeneration)"""
+        """Add a blood stain as sprite overlay (opti mized - no background regeneration)"""
         # Pick random blood texture from pre-generated pool
         if not self.blood_stain_textures:
             return

rats.py

@@ -333,6 +333,7 @@ class MiceMaze(
             self.unit_positions.setdefault(unit.position, []).append(unit)
             self.unit_positions_before.setdefault(unit.position_before, []).append(unit)
         
+        
         # Fourth pass: check collisions and draw
         for unit in self.units.copy().values():
             unit.collisions()

requirements.txt

@@ -1,4 +1,5 @@
 pysdl2
 Pillow
 pyaml
-numpy
+numpy
+requests

tools/generate_rat_sprites.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+"""
+Generate directional rat sprites (LEFT, RIGHT, UP, DOWN) from source LEFT PNGs.
+
+Source files (tools/vernon/output/):
+  BMP_MALE_LEFT.png
+  BMP_FEMALE_LEFT.png
+  BMP_BABY_LEFT.png
+
+Output goes to assets/Rat/ as:
+  BMP_<SEX>_LEFT.png   — copy of source
+  BMP_<SEX>_RIGHT.png  — horizontal flip
+  BMP_<SEX>_UP.png     — rotate 270° (nose up)
+  BMP_<SEX>_DOWN.png   — rotate 90° (nose down)
+
+Usage (from project root):
+  python tools/generate_rat_sprites.py
+"""
+
+import sys
+import os
+from pathlib import Path
+from PIL import Image
+
+REPO_ROOT = Path(__file__).resolve().parent.parent
+SOURCE_DIR = REPO_ROOT / "tools" / "vernon" / "output"
+OUTPUT_DIR = REPO_ROOT / "assets" / "Rat"
+
+SEXES = ["MALE", "FEMALE", "BABY"]
+
+
+def generate(sex: str) -> None:
+    src_path = SOURCE_DIR / f"BMP_{sex}_LEFT.png"
+    if not src_path.exists():
+        print(f"  SKIP {sex}: source not found at {src_path}", file=sys.stderr)
+        return
+
+    src = Image.open(src_path).convert("RGBA")
+
+    variants = {
+        "LEFT":  src,
+        "RIGHT": src.transpose(Image.FLIP_LEFT_RIGHT),
+        "UP":    src.rotate(270, expand=True),
+        "DOWN":  src.rotate(90, expand=True),
+    }
+
+    for direction, img in variants.items():
+        out_path = OUTPUT_DIR / f"BMP_{sex}_{direction}.png"
+        img.save(out_path)
+        print(f"  wrote {out_path.relative_to(REPO_ROOT)}  {img.size}")
+
+
+def main() -> None:
+    OUTPUT_DIR.mkdir(parents=True, exist_ok=True)
+    for sex in SEXES:
+        print(f"[{sex}]")
+        generate(sex)
+    print("Done.")
+
+
+if __name__ == "__main__":
+    main()

tools/generate_weapon_sprites.py

@@ -0,0 +1,362 @@
+#!/usr/bin/env python3
+"""Generate detailed 64×64 pixel art weapon sprites for mice game.
+
+Logical grid: 16×16, each logical pixel = 4×4 real pixels → 64×64 output.
+
+Sprites generated:
+  BMP_BOMB0 … BMP_BOMB4         — bomb fuse animation (0=long fuse, 4=spark)
+  BMP_GAS                       — toxic gas cloud (symmetric)
+  BMP_GAS_LEFT/RIGHT/UP/DOWN    — gas half-sprites (directional clip)
+  BMP_EXPLOSION                 — central starburst
+  BMP_EXPLOSION_LEFT/RIGHT/UP/DOWN
+  BMP_NUCLEAR                   — mushroom cloud
+  BMP_POISON                    — poison vial with skull
+
+Usage (from project root):
+  python tools/generate_weapon_sprites.py
+"""
+
+from pathlib import Path
+from PIL import Image, ImageDraw
+import math
+
+REPO = Path(__file__).resolve().parent.parent
+OUT  = REPO / "assets" / "Rat"
+
+SZ = 64        # canvas size (real pixels)
+LP = 4         # logical pixel size in real pixels
+LG = SZ // LP  # 16 — logical grid dimension
+
+# ─── Palette ───────────────────────────────────────────────────────────────────
+T   = (0,   0,   0,   0)
+
+# Bomb body
+BK  = (10,  10,  20,  255)  # outline
+BD  = (35,  35,  60,  255)  # dark body
+BM  = (58,  58,  90,  255)  # mid body
+BH  = (88,  92, 130,  255)  # highlight
+BG  = (150, 155, 205,  255)  # gloss spot
+
+# Fuse rope
+FD  = (70,  40,  10,  255)  # dark strand
+FL  = (120, 80,  28,  255)  # light strand
+
+# Sparks
+SK  = (255, 225,  30,  255)  # yellow
+SO  = (255, 130,   0,  255)  # orange
+EW  = (255, 255, 210,  255)  # spark white core
+
+# Gas / toxic cloud
+GK  = (15,  80,   8,  255)  # dark-green outline
+GD  = (30, 140,  18,  255)  # dark green body
+GM  = (55, 195,  40,  255)  # mid green
+GL  = (120, 235,  75,  255)  # light green
+GH  = (205, 255, 155,  255)  # gloss highlight
+
+# Explosion
+EK  = (140,  10,   0,  255)  # dark red core
+EM  = (230,  70,   0,  255)  # orange rays
+EL  = (255, 200,   0,  255)  # yellow outer
+
+# Nuclear cloud
+NC  = (120, 120, 120,  255)  # cloud dark grey
+NL  = (185, 185, 185,  255)  # cloud mid grey
+NH  = (245, 245, 245,  255)  # cloud light / highlight
+NK  = (155,  30,   0,  255)  # stem dark red
+NM  = (235, 110,  15,  255)  # stem orange
+NY  = (255, 215,  25,  255)  # inner glow yellow
+
+# Poison vial
+PD  = (70,   0, 115,  255)  # dark purple stopper
+PM  = (125,  20, 170,  255)  # mid purple cork
+PW  = (235, 235, 235,  255)  # white glass / label
+PBK = (5,    5,  10,  255)  # skull black
+PG  = (25,  165,  20,  255)  # green liquid
+PGH = (85,  230,  55,  255)  # green highlight
+
+
+# ─── Drawing helpers ────────────────────────────────────────────────────────────
+
+def _img():
+    return Image.new("RGBA", (SZ, SZ), (0, 0, 0, 0))
+
+
+def _put(img, lx, ly, color):
+    """Paint one logical pixel (LP×LP block)."""
+    if 0 <= lx < LG and 0 <= ly < LG:
+        drw = ImageDraw.Draw(img)
+        x0, y0 = lx * LP, ly * LP
+        drw.rectangle([x0, y0, x0 + LP - 1, y0 + LP - 1], fill=color)
+
+
+def _circle(img, cx, cy, layers):
+    """
+    Paint concentric circles.  cx/cy in logical float coords.
+    layers = [(outer_radius, color), ...] tested in order; first hit wins.
+    """
+    drw = ImageDraw.Draw(img)
+    for ly in range(LG):
+        for lx in range(LG):
+            d = math.sqrt((lx - cx) ** 2 + (ly - cy) ** 2)
+            for r, color in layers:
+                if d <= r:
+                    x0, y0 = lx * LP, ly * LP
+                    drw.rectangle([x0, y0, x0 + LP - 1, y0 + LP - 1], fill=color)
+                    break
+
+
+def _grid(img, rows, palette):
+    """
+    Paint from a character-grid string list.
+    rows: list of 16 strings, each with 16 non-space chars.
+    '.' = skip (transparent).  palette maps char → RGBA.
+    """
+    for row_idx, row_str in enumerate(rows):
+        chars = [c for c in row_str if c != ' ']
+        for col_idx, ch in enumerate(chars):
+            if ch == '.' or col_idx >= LG or row_idx >= LG:
+                continue
+            color = palette.get(ch)
+            if color:
+                _put(img, col_idx, row_idx, color)
+
+
+# ─── BOMB ──────────────────────────────────────────────────────────────────────
+# Fuse rope path (logical coords), body-attachment → spark tip
+_FUSE = [(9, 6), (9, 5), (10, 4), (11, 3), (11, 2), (12, 1)]
+
+
+def make_bomb(frame: int) -> Image.Image:
+    """frame 0 = long fuse / tiny spark; frame 4 = no fuse / huge spark."""
+    img = _img()
+
+    # Body: nested circles centered at logical (7.5, 10.0)
+    cx, cy = 7.5, 10.0
+    _circle(img, cx, cy, [
+        (5.4, BK),   # outline ring
+        (4.9, BD),   # dark body edge
+        (4.0, BM),   # mid body fill
+    ])
+    # Highlight blob (upper-left of body)
+    _circle(img, 5.5, 7.8, [(2.3, BH), (1.2, BG)])
+
+    # Fuse rope — show only the remaining segments
+    segs = max(1, len(_FUSE) - frame)
+    for i in range(segs):
+        fx, fy = _FUSE[i]
+        _put(img, fx, fy, FL if i % 2 == 0 else FD)
+
+    # Spark at the fuse tip — grows with frame
+    ti = min(segs - 1, len(_FUSE) - 1)
+    tx, ty = _FUSE[ti]
+    if frame == 0:
+        _put(img, tx, ty, SK)
+    elif frame == 1:
+        _put(img, tx, ty, EW)
+        _put(img, tx, ty - 1, SK)
+    elif frame == 2:
+        _put(img, tx, ty, EW)
+        _put(img, tx + 1, ty, SK)
+        _put(img, tx, ty - 1, SK)
+    elif frame == 3:
+        for dx, dy, c in [(-1, 0, SK), (1, 0, SK), (0, -1, SK), (0, 1, SO), (0, 0, EW)]:
+            _put(img, tx + dx, ty + dy, c)
+    else:  # frame 4 — about to detonate
+        for dx, dy, c in [
+            (-2, 0, SO), (-1, 0, SK), (-1, -1, SK), (-1, 1, SO),
+            (0, -2, SK), (0, -1, EW), (0, 0, EW), (0, 1, SK),
+            (1, 0, SK), (1, -1, SK), (2, 0, SO), (0, -3, SO),
+        ]:
+            _put(img, tx + dx, ty + dy, c)
+
+    return img
+
+
+# ─── GAS ───────────────────────────────────────────────────────────────────────
+_GAS_ROWS = [
+    '. . . . . . . . . . . . . . . .',
+    '. . . . . K K K K . . . . . . .',
+    '. . . K K D D D D K K . . . . .',
+    '. . K D D M M M M D D K . . . .',
+    '. K D M M M L L M M D D K . . .',
+    '. K D M L G L L G L M D K . . .',
+    'K D M M L L L L L L M D D K . .',
+    'K D M L L L L L L L L M D K . .',
+    'K D M M L L L L L L M M D K . .',
+    'K D D M M L L L L M M D D K . .',
+    '. K D D M M M M M M D D K . . .',
+    '. . K D D D M M D D D K . . . .',
+    '. . . K K D D D D K K . . . . .',
+    '. . . . . K K K K . . . . . . .',
+    '. . . . . . . . . . . . . . . .',
+    '. . . . . . . . . . . . . . . .',
+]
+_GAS_PAL = {'K': GK, 'D': GD, 'M': GM, 'L': GL, 'G': GH}
+
+
+def make_gas(direction=None) -> Image.Image:
+    img = _img()
+    _grid(img, _GAS_ROWS, _GAS_PAL)
+    # Directional clip: erase the half the gas does NOT flow toward
+    drw = ImageDraw.Draw(img)
+    clips = {
+        'LEFT':  (32, 0, 63, 63),
+        'RIGHT': (0,  0, 31, 63),
+        'UP':    (0, 32, 63, 63),
+        'DOWN':  (0,  0, 63, 31),
+    }
+    if direction in clips:
+        drw.rectangle(list(clips[direction]), fill=(0, 0, 0, 0))
+    return img
+
+
+# ─── EXPLOSION ─────────────────────────────────────────────────────────────────
+
+def make_explosion(direction=None) -> Image.Image:
+    img = _img()
+    cx, cy = 7.5, 7.5
+
+    # 8-way diagonal rays (thin)
+    for deg in range(0, 360, 45):
+        rad = math.radians(deg)
+        for step in range(1, 110):
+            d = step * 0.07
+            if d > 7.8:
+                break
+            lx = round(cx + d * math.cos(rad))
+            ly = round(cy + d * math.sin(rad))
+            if 0 <= lx < LG and 0 <= ly < LG:
+                c = EM if d > 6 else (EL if d > 3.5 else EW)
+                _put(img, lx, ly, c)
+
+    # 4-way cardinal rays (thicker — 3 pixels wide)
+    for deg in [0, 90, 180, 270]:
+        rad = math.radians(deg)
+        perp = math.radians(deg + 90)
+        for step in range(1, 120):
+            d = step * 0.07
+            if d > 7.8:
+                break
+            for spread in (-0.35, 0.0, 0.35):
+                lx = round(cx + d * math.cos(rad) + spread * math.cos(perp))
+                ly = round(cy + d * math.sin(rad) + spread * math.sin(perp))
+                if 0 <= lx < LG and 0 <= ly < LG:
+                    c = EM if d > 5.5 else (EL if d > 3.0 else EW)
+                    _put(img, lx, ly, c)
+
+    # Hot core
+    _circle(img, cx, cy, [(2.5, EK), (1.8, EM), (1.0, EL), (0.5, EW)])
+
+    # Directional clip
+    drw = ImageDraw.Draw(img)
+    clips = {
+        'LEFT':  (32, 0, 63, 63),
+        'RIGHT': (0,  0, 31, 63),
+        'UP':    (0, 32, 63, 63),
+        'DOWN':  (0,  0, 63, 31),
+    }
+    if direction in clips:
+        drw.rectangle(list(clips[direction]), fill=(0, 0, 0, 0))
+    return img
+
+
+# ─── NUCLEAR (mushroom cloud) ───────────────────────────────────────────────────
+_NUCLEAR_ROWS = [
+    '. . . . . . . . . . . . . . . .',
+    '. . . . N L L L L L L N . . . .',
+    '. . . N L H H H H H H L N . . .',
+    '. . N L H H N N H H N H L N . .',
+    '. . N L H N N N H N N H L N . .',
+    '. . N L N N N H H N N N L N . .',
+    '. . N L N N N H H N N N L N . .',
+    '. . . N L H H H H H H L N . . .',
+    '. . . . N L L L L L L N . . . .',
+    '. . . . . . M Y Y M . . . . . .',
+    '. . . . . . M Y Y M . . . . . .',
+    '. . . . . Z M Y Y M Z . . . . .',
+    '. . . . Z Z M Y Y M Z Z . . . .',
+    '. . . Z Z Z M Y Y M Z Z Z . . .',
+    '. . . Z Z Z Z Z Z Z Z Z Z . . .',
+    '. . . . . . . . . . . . . . . .',
+]
+_NUCLEAR_PAL = {'N': NC, 'L': NL, 'H': NH, 'M': NM, 'Y': NY, 'Z': NK}
+
+
+def make_nuclear() -> Image.Image:
+    img = _img()
+    _grid(img, _NUCLEAR_ROWS, _NUCLEAR_PAL)
+    return img
+
+
+# ─── POISON VIAL ───────────────────────────────────────────────────────────────
+_POISON_ROWS = [
+    '. . . . . . . . . . . . . . . .',
+    '. . . . . . . D D D . . . . . .',
+    '. . . . . . D M M M D . . . . .',
+    '. . . . . . W W W W W W . . . .',
+    '. . . . . W B B B B B B W . . .',
+    '. . . . . W B W . . B B W . . .',
+    '. . . . . W B . W W . B W . . .',
+    '. . . . . W B G G G B B W . . .',
+    '. . . . . W B G H G B B W . . .',
+    '. . . . . W B G G G B B W . . .',
+    '. . . . . W B B B B B B W . . .',
+    '. . . . . W B B B B B B W . . .',
+    '. . . . . . W W W W W W . . . .',
+    '. . . . . . . . . . . . . . . .',
+    '. . . . . . . . . . . . . . . .',
+    '. . . . . . . . . . . . . . . .',
+]
+_POISON_PAL = {
+    'D': PD,   # dark purple stopper
+    'M': PM,   # mid purple cork
+    'W': PW,   # white glass
+    'B': PBK,  # skull / label black
+    'G': PG,   # green liquid
+    'H': PGH,  # green highlight
+}
+
+
+def make_poison() -> Image.Image:
+    img = _img()
+    _grid(img, _POISON_ROWS, _POISON_PAL)
+    return img
+
+
+# ─── Main ───────────────────────────────────────────────────────────────────────
+
+def main():
+    OUT.mkdir(parents=True, exist_ok=True)
+
+    # Bombs (5 animation frames)
+    for frame in range(5):
+        p = OUT / f"BMP_BOMB{frame}.png"
+        make_bomb(frame).save(p)
+        print(f"  wrote {p.name}")
+
+    # Gas
+    for direction in [None, 'LEFT', 'RIGHT', 'UP', 'DOWN']:
+        suffix = f"_{direction}" if direction else ""
+        p = OUT / f"BMP_GAS{suffix}.png"
+        make_gas(direction).save(p)
+        print(f"  wrote {p.name}")
+
+    # Explosion
+    for direction in [None, 'LEFT', 'RIGHT', 'UP', 'DOWN']:
+        suffix = f"_{direction}" if direction else ""
+        p = OUT / f"BMP_EXPLOSION{suffix}.png"
+        make_explosion(direction).save(p)
+        print(f"  wrote {p.name}")
+
+    # Nuclear & Poison
+    make_nuclear().save(OUT / "BMP_NUCLEAR.png")
+    print("  wrote BMP_NUCLEAR.png")
+    make_poison().save(OUT / "BMP_POISON.png")
+    print("  wrote BMP_POISON.png")
+
+    total = 5 + 5 + 5 + 2
+    print(f"\nDone — {total} sprites saved to {OUT}")
+
+
+if __name__ == "__main__":
+    main()