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Add a special case for 0-time interpolations

This commit is contained in:
kobewi 2021-09-17 00:50:07 +02:00
parent 60d67f93c6
commit 5c1195e456
2 changed files with 5 additions and 0 deletions
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1
doc/classes/Tween.xml
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@ -86,6 +86,7 @@
[code]initial_value[/code] is the starting value of the interpolation.
[code]delta_value[/code] is the change of the value in the interpolation, i.e. it's equal to [code]final_value - initial_value[/code].
[code]duration[/code] is the total time of the interpolation.
[b]Note:[/b] If [code]duration[/code] is equal to [code]0[/code], the method will always return the final value, regardless of [code]elapsed_time[/code] provided.
</description>
</method>
<method name="is_running">

4
thirdparty/misc/easing_equations.cpp vendored
View File

@ -312,6 +312,10 @@ Tween::interpolater Tween::interpolaters[Tween::TRANS_MAX][Tween::EASE_MAX] = {
};
real_t Tween::run_equation(TransitionType p_trans_type, EaseType p_ease_type, real_t t, real_t b, real_t c, real_t d) {
if (d == 0) {
// Special case to avoid dividing by 0 in equations.
return b + c;
}
interpolater cb = interpolaters[p_trans_type][p_ease_type];
ERR_FAIL_COND_V(cb == NULL, b);