src/et_common.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39

/*
   Kitsune's Curse
   Copyright (C) 2020-2023 Juan J. Martinez <jjm@usebox.net>

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#include "splib.h"
#include "main.h"

#include "entities.h"
#include "et_player.h"

void update_fixed_common()
{
    // limit and change direction
    if ((*it_param & 127) == *it_extra)
    {
        *it_param &= 128;
        *it_param ^= 128;
    }

    ++(*it_param);

    if (*it_param & 128)
        *it_x += 1;
    else
        *it_x -= 1;
}