rimlike/scenes/entities/rock.gd
megaproxy 938e871bf1 Add BigRock: 2×2 mineable boulder with full mining/path/save support
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>
2026-05-12 14:34:24 +01:00

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## Rock entity — mineable by a pawn with a Mine job. Drops a stone Item node
## when mined out.
##
## Mirrors Tree's chopping model; stone is harder so MINE_TICKS is longer.
## A MineProvider (Opus, Phase 4) creates a Job whose INTERACT toil calls
## on_mine_tick() once per sim tick via JobRunner.
##
## World registration (World.register_rock / World.unregister_rock) is called
## here but the methods land in World during Opus integration.
class_name Rock extends Node2D
const TILE_SIZE_PX: int = 16
## Sim ticks to mine a rock at 1× speed (120 ticks = 6 sim seconds at 20 Hz).
## Stone is harder than wood — MINE_TICKS > Tree.CHOP_TICKS.
const MINE_TICKS: int = 120
## Stone Items dropped on a successful mine.
const STONE_DROPS_ON_MINE: int = 1
# ── state ─────────────────────────────────────────────────────────────────────
var tile: Vector2i = Vector2i.ZERO
## 0..MINE_TICKS. Advanced by on_mine_tick(); rock is mined when equal to MINE_TICKS.
var mine_progress: int = 0
# Preloaded scene for spawned stone items.
const ITEM_SCENE: PackedScene = preload("res://scenes/entities/item.tscn")
## Rock sprite atlas — re-uses the Grasslands tileset (already imported for the
## decoration overlay). These coords pick standalone single-tile boulders from
## the rock band (x=16..29, y=3 and y=5) — chosen because each has a clean
## green margin on all four sides, so they read as separate small rocks rather
## than chunks of a tiled cluster. The earlier (24,7)/(28,7)/(12,13) coords
## were autotile interior pieces; replaced 2026-05-12 after the user flagged
## the obvious tile-cluster artifacts on small rocks.
##
## Multi-tile cluster formations live at (22..23, 3..4) brown and (30..31, 3..4)
## gray — those are reserved for the upcoming BigRock entity (2×2 boulder).
const _ROCK_TEX: Texture2D = preload("res://art/tiles/FG_Grasslands_Spring.png")
const _ROCK_VARIANT_COORDS: Array[Vector2i] = [
Vector2i(16, 3), # brown round, medium
Vector2i(20, 3), # brown peaked, smaller
Vector2i(16, 5), # brown squat, low
Vector2i(24, 3), # gray round, medium
Vector2i(28, 3), # gray peaked, smaller
Vector2i(24, 5), # gray squat, low
]
# ── lifecycle ─────────────────────────────────────────────────────────────────
func _ready() -> void:
position = _tile_to_world(tile)
_build_sprite()
World.register_rock(self)
## Adds a Sprite2D child with one of the rock variants. Variant chosen
## deterministically from the tile coord so the same tile renders the same
## rock across boots and load/save.
func _build_sprite() -> void:
var sprite := Sprite2D.new()
sprite.name = "Sprite"
sprite.texture = _ROCK_TEX
sprite.region_enabled = true
var coord: Vector2i = _ROCK_VARIANT_COORDS[(tile.x * 31 + tile.y * 17) % _ROCK_VARIANT_COORDS.size()]
sprite.region_rect = Rect2(coord.x * TILE_SIZE_PX, coord.y * TILE_SIZE_PX, TILE_SIZE_PX, TILE_SIZE_PX)
sprite.centered = true
sprite.offset = Vector2.ZERO # 16×16 tile, sits centered on the tile
add_child(sprite)
func _exit_tree() -> void:
World.unregister_rock(self)
# ── public API ────────────────────────────────────────────────────────────────
## One-shot initialiser. Call after add_child() so _ready() already fired.
func setup(start_tile: Vector2i) -> void:
tile = start_tile
mine_progress = 0
position = _tile_to_world(tile)
queue_redraw()
Audit.log("rock", "spawned at %s" % tile)
## True when the rock hasn't been fully mined yet.
func is_mineable() -> bool:
return mine_progress < MINE_TICKS
## Walk destination for a pawn approaching this rock. Small rocks are walkable
## (Phase 4 simplification), so the pawn stands on the rock tile while mining.
## BigRock overrides this to return a perimeter neighbour because its footprint
## is blocked. MineProvider always asks the entity for this rather than reading
## `.tile` directly, so single Rock and BigRock plug into the same walk toil.
func approach_tile_for(_pawn_tile: Vector2i) -> Vector2i:
return tile
## Called by the INTERACT toil in JobRunner once per sim tick while the pawn
## works this rock. Advances mine_progress and triggers mined() when complete.
func on_mine_tick() -> void:
if not is_mineable():
return
mine_progress += 1
queue_redraw()
if mine_progress >= MINE_TICKS:
mined()
## Drop stone Item(s) and free this node. Called automatically by on_mine_tick()
## but also accessible for scripted removal (debug, storyteller events).
func mined() -> void:
# Single drop lands on the rock's own tile.
var item: Item = ITEM_SCENE.instantiate()
get_parent().add_child(item)
item.setup(Item.TYPE_STONE, 1, tile)
Audit.log("rock", "mined at %s; %d stone drop" % [tile, STONE_DROPS_ON_MINE])
queue_free()
# ── save / load ───────────────────────────────────────────────────────────────
func to_dict() -> Dictionary:
return {
"class_id": &"rock",
"tile_x": tile.x,
"tile_y": tile.y,
"mine_progress": mine_progress,
}
static func from_dict(d: Dictionary) -> Dictionary:
return {
"tile_x": int(d.get("tile_x", 0)),
"tile_y": int(d.get("tile_y", 0)),
"mine_progress": int(d.get("mine_progress", 0)),
}
# ── render ────────────────────────────────────────────────────────────────────
func _draw() -> void:
# Rock body comes from the Sprite2D child (see _build_sprite).
# This _draw renders only the mine-progress crack overlaid on the sprite.
if mine_progress > 0:
var ratio := float(mine_progress) / float(MINE_TICKS)
var crack_len := ratio * 5.0
draw_line(
Vector2(-1.0, -2.0),
Vector2(-1.0 + crack_len, 1.0),
Color(0.15, 0.12, 0.10, 0.85),
1.5
)
# ── helpers ───────────────────────────────────────────────────────────────────
func _tile_to_world(t: Vector2i) -> Vector2:
return Vector2(
t.x * TILE_SIZE_PX + TILE_SIZE_PX / 2.0,
t.y * TILE_SIZE_PX + TILE_SIZE_PX / 2.0
)