#IFNDEF __lib_winscreen
#DEFINE __lib_winscreen 1

GOTO __skip_lib_winscreen

// ============================================================================
// WIN SCREEN
// Displays "YOU WIN!" celebration when game is won
// ============================================================================

BYTE CONST WIN_LOGO_CHAR = $50    // Hearts suit character
BYTE CONST WIN_CLEAR_CHAR = 0     // Solid block (shows color RAM color)

// Logo dimensions and position
// Logo is 26 chars wide x 5 chars tall, centered on 40x25 screen
BYTE CONST WIN_LOGO_WIDTH = 26
BYTE CONST WIN_LOGO_HEIGHT = 5
BYTE CONST WIN_LOGO_START_COL = 7   // (40-26)/2 = 7
BYTE CONST WIN_LOGO_START_ROW = 10  // (25-5)/2 = 10

// Clear area with 1 char padding on sides
BYTE CONST WIN_CLEAR_WIDTH = 28
BYTE CONST WIN_CLEAR_START_COL = 6

// Screen base
WORD CONST SCREEN_BASE = $0400

// ----------------------------------------------------------------------------
// Logo offset data
// Each byte is an offset from logo top-left where hearts char goes
// Arranged visually to show letter shapes in source
// ----------------------------------------------------------------------------
LABEL win_logo_offsets
ASM
  ; "YOU WIN!" - 5 rows x 26 cols
  ; Offsets where hearts char ($50) is placed
  ;
  ; Y     O       U           W         I   N       !
  ;
  ; Row 0:
  ; █ █   ███     █ █         █   █     █   █ █     █
  !8 0,2, 4,5,6,  8,10,       13,17,    19, 21,23,  25
  ;
  ; Row 1:
  ;  █    █ █     █ █         █   █     █   ███     █
  !8 41,  44,46,  48,50,      53,57,    59, 61,62,63,65
  ;
  ; Row 2:
  ;  █    █ █     █ █         █ █ █     █   █ █     █
  !8 81,  84,86,  88,90,      93,95,97, 99, 101,103,105
  ;
  ; Row 3:
  ;  █    █ █     █ █         █ █ █     █   █ █
  !8 121, 124,126,128,130,    133,135,137,139,141,143
  ;
  ; Row 4:
  ;  █    ███     ███          █ █      █   █ █     █
  !8 161, 164,165,166,168,169,170,174,176,179,181,183,185
  ;
  ; Terminator
  !8 255
ENDASM


// ============================================================================
// FUNC clear_win_area
// Clears a rectangular area in the center of screen for the logo
// Fills with WIN_CLEAR_CHAR (solid block showing white)
// ============================================================================
FUNC clear_win_area
  WORD screen_ptr @ $a0
  BYTE row
  BYTE col
  WORD row_start

  // Calculate starting position: row 10, col 6
  // Offset = 10 * 40 + 6 = 406
  row_start = SCREEN_BASE + 406

  FOR row = 0 TO WIN_LOGO_HEIGHT-1
    POINTER screen_ptr -> row_start
    FOR col = 0 TO WIN_CLEAR_WIDTH-1
      POKE screen_ptr[col] , WIN_CLEAR_CHAR
    NEXT
    // Move to next row (add 40)
    row_start = row_start + 40
  NEXT
FEND


// ============================================================================
// FUNC draw_win_logo
// Draws "YOU WIN!" using hearts characters at the calculated offsets
// Must call clear_win_area first
// ============================================================================
FUNC draw_win_logo
  WORD screen_ptr @ $a0
  WORD offset_ptr @ $a2
  WORD logo_base
  BYTE offset

  // Logo base position: row 10, col 7
  // Offset = 10 * 40 + 7 = 407
  logo_base = SCREEN_BASE + 407

  POINTER offset_ptr -> win_logo_offsets
  BYTE index
  index = 0

  // Loop through all offsets until terminator (255)
  offset = PEEK offset_ptr[index]
  WHILE offset != 255
    // Calculate screen address: logo_base + offset
    screen_ptr = logo_base + offset

    // Poke hearts character
    POKE screen_ptr[0] , WIN_LOGO_CHAR

    // Next offset
    index = index + 1
    offset = PEEK offset_ptr[index]
  WEND
FEND


// ============================================================================
// FUNC show_win_screen
// Main entry point - clears area and draws the win logo
// ============================================================================
FUNC show_win_screen
  clear_win_area()
  draw_win_logo()
FEND


LABEL __skip_lib_winscreen

#IFEND