{"record":{"id":"a92e9124c2f608ac","repo":"FyroxEngine/Fyrox","slug":"animation-unable-to-set-value-of-type-types-m","errorCode":null,"errorMessage":"Animation: unable to set value of type {}! Types mismatch!","messagePattern":"Animation: unable to set value of type (.+?)! Types mismatch!","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"fyrox-animation/src/value.rs","lineNumber":267,"sourceCode":"        }\n\n        fn convert_vec4<T>(vec4: &Vector4<f32>) -> Vector4<T>\n        where\n            f32: AsPrimitive<T>,\n            T: Copy + 'static,\n        {\n            Vector4::new(vec4.x.as_(), vec4.y.as_(), vec4.z.as_(), vec4.w.as_())\n        }\n\n        fn set<T>(any: &mut dyn Any, value: T) -> bool\n        where\n            T: Any + Copy,\n        {\n            if let Some(any_val) = any.downcast_mut::<T>() {\n                *any_val = value;\n                true\n            } else {\n                Log::err(format!(\n                    \"Animation: unable to set value of type {}! Types mismatch!\",\n                    any::type_name::<T>()\n                ));\n                false\n            }\n        }\n\n        match self {\n            TrackValue::Real(real) => match value_type {\n                ValueType::Bool => set(any, real.ne(&0.0)),\n                ValueType::F32 => set(any, *real),\n                ValueType::F64 => set(any, *real as f64),\n                ValueType::U64 => set(any, *real as u64),\n                ValueType::I64 => set(any, *real as i64),\n                ValueType::U32 => set(any, *real as u32),\n                ValueType::I32 => set(any, *real as i32),\n                ValueType::U16 => set(any, *real as u16),\n                ValueType::I16 => set(any, *real as i16),","sourceCodeStart":249,"sourceCodeEnd":285,"githubUrl":"https://github.com/FyroxEngine/Fyrox/blob/76c91aad8eca488ce527b1af707be8b3b24ad72d/fyrox-animation/src/value.rs#L249-L285","documentation":"Animation value bindings set typed values through Box<dyn Any>. The set function downcasts the target any-value to type T and, on failure, logs 'Animation: unable to set value of type {}! Types mismatch!' and returns false instead of panicking. It means the bound property's runtime type does not match the type the animation curve produces.","triggerScenarios":"Binding an animation track whose produced value type (e.g. f32, Vector3<f32>) differs from the property it is applied to — e.g. animating a Vector3 property with an f32 curve or vice versa via ValueBinding::apply_to_any.","commonSituations":"Editor animation created against one node type then reused on another; refactor changed a property's type (f32 -> f64, Vector2 -> Vector3); scripts manually constructing tracks with mismatched element types.","solutions":["Make the track's value type match the property's type (use TrackValueKind / correct generic parameter when building the track).","Verify the target node's property type in the editor before binding the track.","Check apply_to_any's return/false result and log which property path is mismatched, then fix the track definition."],"exampleFix":"// before\nlet mut track = Track::new(0, TrackValueKind::Real32); // f32\ntrack.set_target_property(\"Position\"); // Vector3 property\n// after\nlet mut track = Track::new(0, TrackValueKind::Vector3);\ntrack.set_target_property(\"Position\");","handlingStrategy":"validation","validationCode":"assert_eq!(track.value_kind(), target_property_kind(path)); // kinds must match","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Match TrackValueKind to the target property's type","Re-create tracks when property types change during refactors"],"tags":["animation","type-mismatch","value-binding","fyrox"],"backgroundTag":"type-mismatch","analyzedSha":"76c91aad8eca488ce527b1af707be8b3b24ad72d","analyzedAt":"2026-09-10T16:04:01.633Z","contentChangedAt":"2026-09-10T16:04:01.633Z","schemaVersion":2},"datasetVersion":"2026-09-16T09:17:16.951Z"}