IT WORKS
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@ -23,7 +23,7 @@ section .rodata
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home_cursor: db ESC_CHAR, "[H", 0
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statusbar: db ESC_CHAR, "[30;100m", "Use arrow keys to move cursor, enter to invert cell j/k to change simulation speed, p to simulation", 0
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statusbar: db ESC_CHAR, "[32;100m", "Use arrow keys to move cursor, enter to invert cell j/k to change simulation speed, p to simulation", 0
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START_STOP_pos: equ $-statusbar-17
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@ -33,8 +33,8 @@ section .rodata
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alive_switch_statement:
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dq step_simulation.die; 0
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dq step_simulation.die; 1
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dq step_simulation.end_check; 2
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dq step_simulation.end_check; 3
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dq step_simulation.live; 2
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dq step_simulation.live; 3
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dq step_simulation.die; 4
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dq step_simulation.die; 5
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dq step_simulation.die; 6
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@ -113,9 +113,9 @@ print_game_ui:
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ret
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%macro check_if_hashtag 2
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cmp r8, %1
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cmp %1, r8
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jl .no_count_%2
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cmp r9, %1
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cmp %1, r9
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ja .no_count_%2
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mov r11b, [%1]
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cmp r11b, '#'
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@ -134,9 +134,12 @@ step_simulation:
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mov r9, rsi
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add r9, rcx; store higest address posible so we are not checking out of bounds
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xor r10, r10
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mov r10w, [term_cols]
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;mov r11, [term_rows] this register has been confiscated since i cannot use ah because of error: cannot use high byte register in rex instruction
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sub rcx, r10; remove status bar
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xor rax, rax; this shouldn't be needed but just to be sure
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xor r11, r11
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xor rdx, rdx; we will use dl as # counter
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@ -146,33 +149,38 @@ step_simulation:
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inc rsi
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check_if_hashtag rsi, 1
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check_if_hashtag rsi, 1; check column to the to the right
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dec rsi
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check_if_hashtag rsi-1, 2
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dec rsi
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check_if_hashtag rsi, 2; check the one to the left
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inc rsi
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add rsi, r10
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check_if_hashtag rsi, 3
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check_if_hashtag rsi, 3; check the one to the down
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inc rsi
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check_if_hashtag rsi, 4
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check_if_hashtag rsi, 4; check the one to the down-right
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dec rsi
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check_if_hashtag rsi-1, 5
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dec rsi
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check_if_hashtag rsi, 5; check the one to the down-left
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inc rsi
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sub rsi, r10
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sub rsi, r10
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check_if_hashtag rsi, 6
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check_if_hashtag rsi, 6; check the one to the up
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inc rsi
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check_if_hashtag rsi, 7
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check_if_hashtag rsi, 7; check the one to the up-right
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dec rsi
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check_if_hashtag rsi-1, 8
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dec rsi
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check_if_hashtag rsi, 8; check the one to the up-left
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inc rsi
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add rsi, r10
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@ -185,10 +193,17 @@ step_simulation:
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mov byte [rdi], 0x20; SPACE
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jmp .end_check
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.live:
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mov byte [rdi], '#'
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jmp .end_check
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.dead_cell:
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cmp dl, 3
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jne .end_check
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jne .fill_space_there
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mov byte [rdi], '#'
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jmp .end_check
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.fill_space_there:
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mov byte [rdi], 0x20; SPACE
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.end_check:
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dec rcx
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@ -197,9 +212,10 @@ step_simulation:
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test rcx, rcx
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jnz .for_every_column_on_gameboard
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mov rsi, [next_frame_ptr]; destination
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mov rdi, [gameboard_ptr]; source
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mov rsi, [next_frame_ptr]; source
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mov rdi, [gameboard_ptr]; destination
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mov rdx, [gameboard_size]; number of iterations
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sub rdx, r10; remove statusbar
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call memory_copy
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@ -106,25 +106,51 @@ handle_user_input:; main loop of the program
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sub eax, 0x1B5B4100
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shr eax, 8
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cmp al, 3
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ja .no_input
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mov r9w, [term_rows]
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dec r9w
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mov r10w, [term_cols]
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jmp [arrow_switch_statement+(rax*8)]; lets hope this works
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.arrow_up:
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dec word [cursor_rows]
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jnz .move_cursor_up
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inc word [cursor_rows]
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jmp .no_input
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.move_cursor_up:
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lea rdi, [cursor_up]
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call print_str
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jmp .no_input
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.arrow_down:
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inc word [cursor_rows]
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mov r8w, [cursor_rows]
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inc r8w
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cmp word r8w, r9w
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ja .no_input
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mov word [cursor_rows], r8w
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lea rdi, [cursor_down]
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call print_str
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jmp .no_input
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.arrow_right:
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inc word [cursor_cols]
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mov r8w, [cursor_cols]
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inc r8w
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cmp word r8w, r10w
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ja .no_input
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mov word [cursor_cols], r8w
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lea rdi, [cursor_right]
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call print_str
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jmp .no_input
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.arrow_left:
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dec word [cursor_cols]
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jnz .move_cursor_left
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inc word [cursor_cols]
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jmp .no_input
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.move_cursor_left:
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lea rdi, [cursor_left]
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call print_str
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jmp .no_input
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@ -175,10 +201,16 @@ handle_user_input:; main loop of the program
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.check_k:
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cmp al, 'k'
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jne .no_input
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jne .check_q
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; TODO implement simulation speed
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.check_q:
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cmp al, 'q'
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jne .no_input
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pop r12
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ret; exit if q pressed
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.no_input:
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mov al, [simulation_running]
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14
src/str.asm
14
src/str.asm
@ -154,10 +154,16 @@ memory_copy:; takes destination in rdi, source in rsi and lenght in rdx
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mov r9, rdi
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mov rax, rdx
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div 8
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mov rcx, rdx
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shr rcx, 3; calculate how many 8 byte chunks we need
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and rdx, 0x7; calculate the reminder
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mov
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rep movsq; move as many 8 byte chunks as posible
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mov rax, r9; return pointer to memory area same as memset in libc
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mov rcx, rdx
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rep movsb; move the rest
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mov rax, r9; return pointer to memory area same as memcpy in libc
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ret
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