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Fix final tween value with custom interpolator

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This commit is contained in:
kobewi 2025-03-24 22:55:57 +01:00
parent 6b5b84c0c5
commit 8f657977fc
2 changed files with 23 additions and 12 deletions
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33
scene/animation/tween.cpp
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@ -542,6 +542,20 @@ Tween::Tween(SceneTree *p_parent_tree) {
valid = true;
}
double PropertyTweener::_get_custom_interpolated_value(const Variant &p_value) {
const Variant *argptr = &p_value;
Variant result;
Callable::CallError ce;
custom_method.callp(&argptr, 1, result, ce);
if (ce.error != Callable::CallError::CALL_OK) {
ERR_FAIL_V_MSG(false, "Error calling custom method from PropertyTweener: " + Variant::get_callable_error_text(custom_method, &argptr, 1, ce) + ".");
} else if (result.get_type() != Variant::FLOAT) {
ERR_FAIL_V_MSG(false, vformat("Wrong return type in PropertyTweener custom method. Expected float, got %s.", Variant::get_type_name(result.get_type())));
}
return result;
}
Ref<PropertyTweener> PropertyTweener::from(const Variant &p_value) {
Ref<Tween> tween = _get_tween();
ERR_FAIL_COND_V(tween.is_null(), nullptr);
@ -638,17 +652,7 @@ bool PropertyTweener::step(double &r_delta) {
if (time < duration) {
if (custom_method.is_valid()) {
const Variant t = tween->interpolate_variant(0.0, 1.0, time, duration, trans_type, ease_type);
const Variant *argptr = &t;
Variant result;
Callable::CallError ce;
custom_method.callp(&argptr, 1, result, ce);
if (ce.error != Callable::CallError::CALL_OK) {
ERR_FAIL_V_MSG(false, "Error calling custom method from PropertyTweener: " + Variant::get_callable_error_text(custom_method, &argptr, 1, ce) + ".");
} else if (result.get_type() != Variant::FLOAT) {
ERR_FAIL_V_MSG(false, vformat("Wrong return type in PropertyTweener custom method. Expected float, got %s.", Variant::get_type_name(result.get_type())));
}
double result = _get_custom_interpolated_value(t);
target_instance->set_indexed(property, Animation::interpolate_variant(initial_val, final_val, result));
} else {
target_instance->set_indexed(property, tween->interpolate_variant(initial_val, delta_val, time, duration, trans_type, ease_type));
@ -656,7 +660,12 @@ bool PropertyTweener::step(double &r_delta) {
r_delta = 0;
return true;
} else {
target_instance->set_indexed(property, final_val);
if (custom_method.is_valid()) {
double final_t = _get_custom_interpolated_value(1.0);
target_instance->set_indexed(property, Animation::interpolate_variant(initial_val, final_val, final_t));
} else {
target_instance->set_indexed(property, final_val);
}
r_delta = elapsed_time - delay - duration;
_finish();
return false;

2
scene/animation/tween.h
View File

@ -200,6 +200,8 @@ VARIANT_ENUM_CAST(Tween::EaseType);
class PropertyTweener : public Tweener {
GDCLASS(PropertyTweener, Tweener);
double _get_custom_interpolated_value(const Variant &p_value);
public:
Ref<PropertyTweener> from(const Variant &p_value);
Ref<PropertyTweener> from_current();