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implements a falldown

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SuperNovaa41 2025-01-15 17:17:42 -05:00
parent dfeffa2c80
commit ab9b64492d
1 changed files with 18 additions and 0 deletions
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18
src/controls.c
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@ -64,20 +64,37 @@ int parse_input_char(char input_char)
return 0; return 0;
} }
#define DO_FALLDOWN() if (editor.cx > editor.rows[editor.cy - 1].len) {editor.cx = editor.rows[editor.cy - 1].len;move_cursor_pos(editor.cx, editor.cy);}
void move_cursor(movement_t dir) void move_cursor(movement_t dir)
{ {
switch(dir) { switch(dir) {
case LEFT: case LEFT:
if (editor.cx - 1 <= 0)
break;
move_cursor_pos(--editor.cx, editor.cy); move_cursor_pos(--editor.cx, editor.cy);
break; break;
case RIGHT: case RIGHT:
if (editor.cx + 1 > editor.rows[editor.cy - 1].len)
break;
move_cursor_pos(++editor.cx, editor.cy); move_cursor_pos(++editor.cx, editor.cy);
break; break;
case UP: case UP:
if (editor.cy -1 <= 0)
break;
move_cursor_pos(editor.cx, --editor.cy); move_cursor_pos(editor.cx, --editor.cy);
// want to fall down to the end of the line if we're moving to a shorter one
DO_FALLDOWN();
break; break;
case DOWN: case DOWN:
if (editor.cy + 1 >= editor.num_rows)
break;
move_cursor_pos(editor.cx, ++editor.cy); move_cursor_pos(editor.cx, ++editor.cy);
DO_FALLDOWN();
break; break;
case HOME: case HOME:
move_cursor_pos(1, 1); move_cursor_pos(1, 1);
@ -94,3 +111,4 @@ void move_cursor(movement_t dir)
} }
} }
#undef DO_FALLDOWN