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Menus: cycle float values correctly

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- Left of MIN: largest value not within MIN/MAX
  - Keep going left to wrap around to MAX
- Right of MAX: smallest value not within MIN/MAX
  - Keep going right to wrap around to MIN
- Always lands on MIN/MAX
- Trailing zeroes removed
  - Keep ".0" at the end (for style)
This commit is contained in:
James R 2023-12-31 18:53:33 -08:00
parent 18ad033ee7
commit 99baf4e8e1
1 changed files with 67 additions and 3 deletions
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70
src/k_menufunc.c
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@ -83,6 +83,72 @@ void Dummystaff_OnChange(void)
// BASIC MENU HANDLING
// =========================================================================
static void M_AddFloatVar(consvar_t *cv, fixed_t step)
{
int minopt = 0;
int maxopt = 0;
int curopt = -1;
int i;
const CV_PossibleValue_t *values = cv->PossibleValue;
for (i = 0; values[i].strvalue; ++i)
{
if (cv->value == values[i].value)
{
curopt = i;
if (i > 1)
break;
}
else if (i > 1)
{
if (!minopt || values[minopt].value > values[i].value)
minopt = i;
if (!maxopt || values[maxopt].value < values[i].value)
maxopt = i;
}
}
if (curopt > 1 || curopt == (step > 0))
{
CV_Set(cv, step < 0 ? (maxopt ? values[maxopt].strvalue : "MAX") : (minopt ? values[minopt].strvalue : "MIN"));
return;
}
fixed_t n = cv->value;
if (step > 0)
{
if (values[1].value - n <= step)
{
CV_Set(cv, "MAX");
return;
}
n = n + step;
n -= n % step;
}
else
{
if (n - values[0].value <= -step)
{
CV_Set(cv, "MIN");
return;
}
fixed_t p = n % -step;
n -= p ? p : -step;
}
char s[20];
double f = FIXED_TO_FLOAT(n);
const char *d = M_Ftrim(f);
sprintf(s, "%ld%s", (long)f, *d ? d : ".0");
CV_Set(cv, s);
}
void M_ChangeCvarDirect(INT32 choice, consvar_t *cv)
{
// Backspace sets values to default value
@ -102,9 +168,7 @@ void M_ChangeCvarDirect(INT32 choice, consvar_t *cv)
}
else if (cv->flags & CV_FLOAT)
{
char s[20];
sprintf(s, "%f", FIXED_TO_FLOAT(cv->value) + (choice) * (1.0f / 16.0f));
CV_Set(cv, s);
M_AddFloatVar(cv, (FRACUNIT/16) * choice);
}
else
{