Wheat + corn both produce TYPE_GRAIN; potato + strawberry both produce
TYPE_VEGETABLE. Until now they rendered identically (yellow stalks for
both grains, green-leafed root for both vegetables) since shape was
driven by item_type alone.
Added an Item.subtype field that carries the origin crop_kind through
harvest. draw_item_shape dispatches on subtype FIRST then falls back
to item_type — so storage filters (which match on item_type) still
treat wheat+corn as one Grain category and potato+strawberry as one
Vegetable category, but the visuals are now distinct.
New procedural shapes:
- wheat: 3 yellow stalks with grain-heads (same as existing grain)
- corn: yellow cob with kernel dots wrapped in green husk leaves
- potato: 2 brown overlapping lumps with sprout-eye dots
- strawberry: red heart-shape body with green calyx + yellow seeds
Crop.on_harvest_tick assigns subtype = crop_kind on spawn.
SaveSystem._spawn_item now round-trips subtype through saves.
Pawn carry indicator + Item._draw both pass subtype to draw_item_shape.
megaproxy
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