A new entity for multi-tile rock formations. Same duck-typed contract as
single-tile Rock so MineProvider scans both transparently via World.rocks.
Differences from Rock:
• Occupies a 2×2 footprint anchored at origin_tile (top-left).
• Renders a single 32×32 Sprite2D drawn from the FG_Grasslands_Spring 2×2
cluster sprites at (22, 3) brown and (30, 3) gray.
• Blocks pathfinding on all four footprint tiles — pawns route around it.
• MineProvider asks `rock.approach_tile_for(pawn.tile)` for the walk
destination, so the pawn stands beside the boulder instead of trying to
path into the blocked footprint. Rock returns its own tile (walkable);
BigRock picks the nearest walkable perimeter neighbour.
• Mining takes 480 ticks (4× Rock) and drops 4 stone, one per footprint tile.
All init work happens in setup() rather than _ready(): the calling pattern is
`add_child(big); big.setup(origin)`, and _ready fires inside add_child with
origin_tile still at its zero default — anything reading origin_tile from
_ready would stamp the pathfinder at the wrong tile.
Wired through SaveSystem: factory preload, spawn-priority tier 0 (same as
Rock — static structures spawn before pawns), and a `&"big_rock"` factory.
World seed adds two demo boulders near the small-rock cluster
(65, 58) + (56, 64) so the visual contrast is on-screen from boot.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
166 lines
6.5 KiB
GDScript
166 lines
6.5 KiB
GDScript
## Rock entity — mineable by a pawn with a Mine job. Drops a stone Item node
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## when mined out.
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##
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## Mirrors Tree's chopping model; stone is harder so MINE_TICKS is longer.
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## A MineProvider (Opus, Phase 4) creates a Job whose INTERACT toil calls
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## on_mine_tick() once per sim tick via JobRunner.
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##
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## World registration (World.register_rock / World.unregister_rock) is called
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## here but the methods land in World during Opus integration.
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class_name Rock extends Node2D
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const TILE_SIZE_PX: int = 16
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## Sim ticks to mine a rock at 1× speed (120 ticks = 6 sim seconds at 20 Hz).
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## Stone is harder than wood — MINE_TICKS > Tree.CHOP_TICKS.
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const MINE_TICKS: int = 120
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## Stone Items dropped on a successful mine.
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const STONE_DROPS_ON_MINE: int = 1
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# ── state ─────────────────────────────────────────────────────────────────────
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var tile: Vector2i = Vector2i.ZERO
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## 0..MINE_TICKS. Advanced by on_mine_tick(); rock is mined when equal to MINE_TICKS.
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var mine_progress: int = 0
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# Preloaded scene for spawned stone items.
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const ITEM_SCENE: PackedScene = preload("res://scenes/entities/item.tscn")
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## Rock sprite atlas — re-uses the Grasslands tileset (already imported for the
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## decoration overlay). These coords pick standalone single-tile boulders from
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## the rock band (x=16..29, y=3 and y=5) — chosen because each has a clean
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## green margin on all four sides, so they read as separate small rocks rather
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## than chunks of a tiled cluster. The earlier (24,7)/(28,7)/(12,13) coords
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## were autotile interior pieces; replaced 2026-05-12 after the user flagged
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## the obvious tile-cluster artifacts on small rocks.
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##
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## Multi-tile cluster formations live at (22..23, 3..4) brown and (30..31, 3..4)
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## gray — those are reserved for the upcoming BigRock entity (2×2 boulder).
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const _ROCK_TEX: Texture2D = preload("res://art/tiles/FG_Grasslands_Spring.png")
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const _ROCK_VARIANT_COORDS: Array[Vector2i] = [
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Vector2i(16, 3), # brown round, medium
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Vector2i(20, 3), # brown peaked, smaller
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Vector2i(16, 5), # brown squat, low
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Vector2i(24, 3), # gray round, medium
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Vector2i(28, 3), # gray peaked, smaller
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Vector2i(24, 5), # gray squat, low
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]
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# ── lifecycle ─────────────────────────────────────────────────────────────────
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func _ready() -> void:
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position = _tile_to_world(tile)
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_build_sprite()
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World.register_rock(self)
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## Adds a Sprite2D child with one of the rock variants. Variant chosen
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## deterministically from the tile coord so the same tile renders the same
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## rock across boots and load/save.
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func _build_sprite() -> void:
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var sprite := Sprite2D.new()
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sprite.name = "Sprite"
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sprite.texture = _ROCK_TEX
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sprite.region_enabled = true
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var coord: Vector2i = _ROCK_VARIANT_COORDS[(tile.x * 31 + tile.y * 17) % _ROCK_VARIANT_COORDS.size()]
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sprite.region_rect = Rect2(coord.x * TILE_SIZE_PX, coord.y * TILE_SIZE_PX, TILE_SIZE_PX, TILE_SIZE_PX)
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sprite.centered = true
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sprite.offset = Vector2.ZERO # 16×16 tile, sits centered on the tile
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add_child(sprite)
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func _exit_tree() -> void:
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World.unregister_rock(self)
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# ── public API ────────────────────────────────────────────────────────────────
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## One-shot initialiser. Call after add_child() so _ready() already fired.
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func setup(start_tile: Vector2i) -> void:
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tile = start_tile
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mine_progress = 0
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position = _tile_to_world(tile)
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queue_redraw()
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Audit.log("rock", "spawned at %s" % tile)
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## True when the rock hasn't been fully mined yet.
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func is_mineable() -> bool:
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return mine_progress < MINE_TICKS
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## Walk destination for a pawn approaching this rock. Small rocks are walkable
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## (Phase 4 simplification), so the pawn stands on the rock tile while mining.
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## BigRock overrides this to return a perimeter neighbour because its footprint
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## is blocked. MineProvider always asks the entity for this rather than reading
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## `.tile` directly, so single Rock and BigRock plug into the same walk toil.
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func approach_tile_for(_pawn_tile: Vector2i) -> Vector2i:
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return tile
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## Called by the INTERACT toil in JobRunner once per sim tick while the pawn
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## works this rock. Advances mine_progress and triggers mined() when complete.
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func on_mine_tick() -> void:
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if not is_mineable():
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return
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mine_progress += 1
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queue_redraw()
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if mine_progress >= MINE_TICKS:
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mined()
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## Drop stone Item(s) and free this node. Called automatically by on_mine_tick()
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## but also accessible for scripted removal (debug, storyteller events).
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func mined() -> void:
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# Single drop lands on the rock's own tile.
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var item: Item = ITEM_SCENE.instantiate()
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get_parent().add_child(item)
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item.setup(Item.TYPE_STONE, 1, tile)
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Audit.log("rock", "mined at %s; %d stone drop" % [tile, STONE_DROPS_ON_MINE])
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queue_free()
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# ── save / load ───────────────────────────────────────────────────────────────
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func to_dict() -> Dictionary:
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return {
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"class_id": &"rock",
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"tile_x": tile.x,
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"tile_y": tile.y,
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"mine_progress": mine_progress,
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}
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static func from_dict(d: Dictionary) -> Dictionary:
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return {
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"tile_x": int(d.get("tile_x", 0)),
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"tile_y": int(d.get("tile_y", 0)),
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"mine_progress": int(d.get("mine_progress", 0)),
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}
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# ── render ────────────────────────────────────────────────────────────────────
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func _draw() -> void:
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# Rock body comes from the Sprite2D child (see _build_sprite).
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# This _draw renders only the mine-progress crack overlaid on the sprite.
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if mine_progress > 0:
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var ratio := float(mine_progress) / float(MINE_TICKS)
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var crack_len := ratio * 5.0
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draw_line(
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Vector2(-1.0, -2.0),
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Vector2(-1.0 + crack_len, 1.0),
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Color(0.15, 0.12, 0.10, 0.85),
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1.5
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)
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# ── helpers ───────────────────────────────────────────────────────────────────
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func _tile_to_world(t: Vector2i) -> Vector2:
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return Vector2(
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t.x * TILE_SIZE_PX + TILE_SIZE_PX / 2.0,
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t.y * TILE_SIZE_PX + TILE_SIZE_PX / 2.0
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)
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