ASM-Game/game.asm at main · Dedda/ASM-Game · GitHub

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%define green(a) 0x1B, "[32m", a, 0x1B, "[0m"
%define item(a) 0x1B, "[94m", a, 0x1B, "[0m"
%define fish item("🐟 fish")
%define bait item("🪱 bait")
%define start_txt "start"
%define load_txt "load"
%define exit_txt "exit"

section .data
    ; Main menu
    _title_screen db "Main Menu:", 10,
                  db "  [", green(start_txt), "] Start New Game", 10
                  db "  [", green(load_txt), "]  Load Game", 10
                  db "  [", green(exit_txt), "]  Exit Game", 10, "> "
                  db 0
    _main_menu_start_text db start_txt, 10, 0
    _main_menu_load_text db load_txt, 10, 0
    _main_menu_exit_text db exit_txt, 10, 0
    _main_menu_colon_q_text db ":q", 10, 0
    _main_menu_data dq _main_menu_start_text,   _main_menu_start
                    dq _main_menu_load_text,    _main_menu_load
                    dq _main_menu_exit_text,    _main_menu_exit
                    dq _main_menu_colon_q_text, _main_menu_exit
                    dq 0

    ; Game data

    ; Messages
    _game_started db "Staring game...", 10, 0
    _loading_game db "Loading game...", 10, 0

    ; Menus
    _game_menu_exit db "exit", 10, 0
    _game_menu_data dq _game_menu_exit, _game_done, 0

    ; Rooms
    _rooms dq room_docks, room_harbor_plaza
    room_offset_docks EQU 0
    room_offset_harbor_plaza EQU 1

    ; Inventory item names
    _item_count_name_divider db ' '
    _fish_name    dq _fish_name_sg, _fish_name_sg
    _fish_name_sg db fish, 0
    _bait_name    dq _bait_name_sg, _bait_name_sg
    _bait_name_sg db bait, 0
    _item_inventory_name_map dq fish_count, _fish_name
                             dq bait_count, _bait_name
                             dq 0

global bootstrap_game
global room_offset_docks
global room_offset_harbor_plaza

; game_state.asm
extern game_state_beginning
extern fish_count
extern bait_count
extern room
extern game_state_size

; imgdata.asm
extern img_welcome_screen

; input.asm
extern read_line

; menu.asm
extern initialize_meta_menu
extern run_basic_menu

; printing.asm
extern print_c_string
extern print_newline

; room_docks.asm
extern room_docks

; room_harbor_plaza.asm
extern room_harbor_plaza

; savegame.asm
extern load_game

; tui.asm
extern clear_screen

section .text

bootstrap_game:
    mov rdi, _item_inventory_name_map
    mov rsi, game_state_beginning
    mov rdx, game_state_size
    call initialize_meta_menu
_main_menu:
    call clear_screen
    mov rdi, img_welcome_screen
    call print_c_string
    mov rdi, _title_screen
    call print_c_string
    call read_line
    mov rsi, rax
    mov rdi, _main_menu_data
    call run_basic_menu
    cmp rax, 0
    jz _main_menu
    jmp rax
_main_menu_start:
    call _game
    ret
_main_menu_load:
    mov rdi, _loading_game
    call print_c_string
    mov rdi, game_state_beginning
    mov rsi, game_state_size
    call load_game
    cmp rax, 0
    jz _error_on_load
    call _game
_error_on_load:
    jmp _main_menu
_main_menu_exit:
    ret

_game:
    call print_newline
    mov rdi, _game_started
    call print_c_string
    call print_newline
_game_loop:
    xor rax, rax
    mov al, [room]
    call [_rooms + rax * 8]
    cmp al, 0xFF
    je _game_done
    mov [room], al
    jmp _game_loop
_game_done:
    ret