package parameter

// Row-reset funnels, drawn in the inter-tile gap row of the player lane.
// Drop = jump expiry (falling to the base row), Rise = slide expiry.
// %s is the countdown; formatted width must not exceed RenderNoteWidth
const (
	DropFunnelFormat = `\\ %s //`
	RiseFunnelFormat = `// %s \\`
)

// Inbound — chords until the lane shuts.
// Clear — chords until the lane reopens.
// Open — the wall run reaches the window edge; the value is a lower bound.
// Trap — the lane reopens for <= TrapGapMax chords before shutting again;
// flagged on both the inbound and the clear timer
const (
	TimerInboundPrefix = '▼'
	TimerClearPrefix   = '▲'
	TimerOpenSuffix    = '+'
	TimerTrapSuffix    = '!'
)

// StripEmptyChar is lookahead strip rail cell — a chord with no content at this position
const StripEmptyChar = '·'

// ItemFadeChars is the glyph tail of a consumed item's burn-out. Stage 0
// keeps the item glyph; later stages collapse it into the rail cell
var ItemFadeChars = [...]rune{'+', StripEmptyChar}

// UnknownChar is placeholder for a Value with no authored visual.
// Keeps NoteVisual total so an unrendered kind is visible rather than eating an item slot
const UnknownChar = '?'

// MutedText marks the host audio gate in the header. ASCII, so it
// renders in both atlases
const MutedText = "MUTE"

// QuadrantChars provides 2x2 sub-cell resolution for TrueColor mode
// Bitmap encoding: bit0=UL, bit1=UR, bit2=LL, bit3=LR
// Layout: [UL][UR]
//
//	[LL][LR]
var QuadrantChars = [16]rune{
	' ', // 0000 - empty
	'▘', // 0001 - upper-left
	'▝', // 0010 - upper-right
	'▀', // 0011 - upper half
	'▖', // 0100 - lower-left
	'▌', // 0101 - left half
	'▞', // 0110 - anti-diagonal
	'▛', // 0111 - UL + UR + LL
	'▗', // 1000 - lower-right
	'▚', // 1001 - diagonal
	'▐', // 1010 - right half
	'▜', // 1011 - UL + UR + LR
	'▄', // 1100 - lower half
	'▙', // 1101 - UL + LL + LR
	'▟', // 1110 - UR + LL + LR
	'█', // 1111 - full block
}

// Half256Chars provides vertical half-cell resolution for 256-color mode.
// Unicode block characters, CP437-equivalent visuals, naked-TTY compatible
// Bitmap encoding: bit0=top, bit1=bottom
var Half256Chars = [4]rune{
	' ',      // 00 - empty
	'\u2580', // 01 - top half only (▀)
	'\u2584', // 10 - bottom half only (▄)
	'\u2588', // 11 - both halves (█)
}

// Horizontal256Chars provides horizontal half-cell characters.
// Reserved for future horizontal sub-pixel support
var Horizontal256Chars = [2]rune{
	'\u258C', // ▌ - left half
	'\u258E', // ▐ - right half
}

// Density256Chars provides intensity variants for trail and glow effects,
// ordered lowest to highest density. Also indexes wall proximity bands
var Density256Chars = [4]rune{
	'\u2591', // ░ - light shade (25%)
	'\u2592', // ▒ - medium shade (50%)
	'\u2593', // ▓ - dark shade (75%)
	'\u2588', // █ - full block (100%)
}

// Single-line box drawing characters
const (
	BorderSingleHorizontal     = '─' // U+2500
	BorderSingleVertical       = '│' // U+2502
	BorderSingleTopLeft        = '┌' // U+250C
	BorderSingleTopRight       = '┐' // U+2510
	BorderSingleBottomLeft     = '└' // U+2514
	BorderSingleBottomRight    = '┘' // U+2518
	BorderSingleVerticalRight  = '├' // U+251C
	BorderSingleVerticalLeft   = '┤' // U+2524
	BorderSingleHorizontalDown = '┬' // U+252C
	BorderSingleHorizontalUp   = '┴' // U+2534
	BorderSingleCross          = '┼' // U+253C
)

// Double-line box drawing characters
const (
	BorderDoubleHorizontal     = '═' // U+2550
	BorderDoubleVertical       = '║' // U+2551
	BorderDoubleTopLeft        = '╔' // U+2554
	BorderDoubleTopRight       = '╗' // U+2557
	BorderDoubleBottomLeft     = '╚' // U+255A
	BorderDoubleBottomRight    = '╝' // U+255D
	BorderDoubleVerticalRight  = '╠' // U+2560
	BorderDoubleVerticalLeft   = '╣' // U+2563
	BorderDoubleHorizontalDown = '╦' // U+2566
	BorderDoubleHorizontalUp   = '╩' // U+2569
	BorderDoubleCross          = '╬' // U+256C
)