class_name Constants

# Shared constants used across rendering, game state, and protocol layers.

## Tile size in pixels — all renderers and coordinate conversions use this.
const TILE_SIZE: int = 32

# D-049 Z-level rendering pipeline — three-scope architecture.
# Full spec: docs/architecture/z-layer-gap-analysis.md
#
# WORLD SCOPE (z:-200 to z:900, inside FogGroup CanvasGroup)
# All world content composited into one texture, then fog drawn over it.
# Y-sort contract: all children of YSortGroup MUST use z_index = 0.
# z_index is PRIMARY sort, y-position is SECONDARY (Godot #62715).
const Z_FLOOR: int = 0              # Floor tiles — ground plane
const Z_FLOOR_OBJECTS: int = 10     # Floor objects — cosmetic, ground shadows
# z:20-99 reserved: liquid surface (z:110), surface effects
const Z_YSORT: int = 100            # YSortGroup — furniture + entities + walls, all z:0 relative
# z:110 reserved: liquid surface occlusion (alpha by depth)
# z:150-199 reserved: ground VFX (smoke origins, gas pools, sparks)
const Z_AIRBORNE: int = 200         # Projectiles, low-flying objects (scale ~1.0)
# z:250-299 reserved: mid-air VFX (rising smoke, floating particles)
const Z_OVERHEAD: int = 300         # Ceiling edges, upper structure, semi-transparent
# z:325-349 reserved: ceiling VFX (smoke through ceiling)
const Z_HIGH_AIRBORNE: int = 350    # Above-ceiling flying (scale 1.03-1.30, alpha fades)
const Z_UPPER_CONTENT: int = 400    # Upper-floor entities (rare with fixed camera)
# z:500-899 reserved: edge cases
const Z_FOG: int = 900              # FogOverlay — OUTSIDE FogGroup, fog shader
const Z_FOG_ENTITIES: int = 950     # FogEntities — cognitive delay blobs/pings (D-059/D-060)
# Lower floors: z:-100 per floor (floor-1: z:-100 to z:-1, floor-2: z:-200 to z:-101)
# z:-75 to z:-51 reserved: lower floor VFX
#
# INSERT SCOPE (CanvasLayer 10)
# Bloom-rendered, not affected by fog or camera transform.
const CANVAS_INSERT: int = 10       # CanvasLayer number for InsertOverlay
#
# UI SCOPE (CanvasLayer 20)
# HUD, monologue, cursor — always visible.
const CANVAS_UI: int = 20           # CanvasLayer number for UILayer
#
# MODAL SCOPE (CanvasLayer 30)
# Full-screen overlays: pause, inventory modal, death screen.
const CANVAS_MODAL: int = 30        # CanvasLayer number for ModalLayer
#
# Rendering ceiling: 10 floors (25m) above current floor.
# Above this: no sprites, ground shadows + environmental effects only.
const RENDER_CEILING_FLOORS: int = 10
# Visible floor window (looking down): current - 2 floors (detailed + parallax).
const VISIBLE_FLOOR_DEPTH: int = 2

# D-033: Entity relationship color palette
# Color represents the player's RELATIONSHIP to the entity, not an objective property.
# Phase 1: default colors mapped by entity kind (Player/Npc/Object/Terrain).
# Phase 2 (#361): colors derived from RelationshipState via the knowledge graph.
const ENTITY_COLOR_UNKNOWN: Color = Color("#4a9ebb")   # Unknown/Neutral — cool teal
const ENTITY_COLOR_FRIENDLY: Color = Color("#6bc9a6")  # Known/Friendly — soft green
const ENTITY_COLOR_POI: Color = Color("#e8c547")       # Person of Interest — warm amber
const ENTITY_COLOR_HOSTILE: Color = Color("#d45d5d")    # Hostile/Dangerous — muted red
const ENTITY_COLOR_OBJECT: Color = Color("#8b8ba0")    # Static objects — muted grey
const ENTITY_COLOR_PLAYER: Color = Color("#e0e8ff")    # Player character (detective)

# D-033 color lookup by relationship string (#521)
static func color_for_relationship(relationship: String) -> Color:
	match relationship:
		"Friendly": return ENTITY_COLOR_FRIENDLY
		"PersonOfInterest": return ENTITY_COLOR_POI
		"Hostile": return ENTITY_COLOR_HOSTILE
		"Unknown": return ENTITY_COLOR_UNKNOWN
		_: return ENTITY_COLOR_UNKNOWN

# D-033 color lookup by entity data — uses relationship for NPCs (#521)
static func color_for_entity_kind(entity_data: Dictionary) -> Color:
	var kind_variant: String = entity_data.get("kind", {}).get("variant", "")
	match kind_variant:
		"Player": return ENTITY_COLOR_PLAYER
		"Object", "Terrain": return ENTITY_COLOR_OBJECT
		"Npc": return color_for_relationship(entity_data.get("relationship", "Unknown"))
		_: return ENTITY_COLOR_OBJECT

# D-048/D-056: Insert-styled UI color palette
# Used by dialogue box, interaction list, radial menu, and other diegetic insert UI.
const INSERT_COLOR_TEXT: Color = Color("#c8d0e0")       # Default insert text — white-blue
const INSERT_COLOR_HOVER: Color = Color("#e8c547")      # Hover/highlight — amber POI
const INSERT_COLOR_ACTIVE: Color = Color("#6bc9a6")     # Active/pressed — friendly green

# D-015: Peripheral vision dimming
const PERIPHERAL_ALPHA: float = 0.5

# Facing direction indicator
const FACING_INDICATOR_SIZE: float = 6.0
const FACING_INDICATOR_OFFSET: float = 14.0

# #517: Implant UI font color grading — avoid pure white, project through a lens
const IMPLANT_TEXT_COLOR: Color = Color("#E0F7FA")   # Cyan-white — primary text
const IMPLANT_TEXT_DIM: Color = Color("#9EBFC4")     # Dimmed variant — secondary text
const IMPLANT_PULSE_MIN: float = 0.85               # Alpha pulse floor
const IMPLANT_PULSE_MAX: float = 1.0                # Alpha pulse ceiling
const IMPLANT_PULSE_PERIOD: float = 2.5             # Seconds per pulse cycle