Add more helper functions

src/parser/entities.rs

@@ -109,3 +109,9 @@ impl EntityContext {
         )))
     }
 }
+
+impl EntityState {
+    pub fn get_prop(&self, name: &str) -> Option<&EntityProp> {
+        self.props.iter().find(|p| p.prop_info.prop_name.as_ref() == name)
+    }
+}

src/parser/variant.rs

@@ -24,3 +24,26 @@ pub struct Sticker {
     pub x: f32,
     pub y: f32,
 }
+
+impl Variant {
+    pub fn as_f32(&self) -> Option<f32> {
+        match self {
+            Self::F32(v) => Some(*v),
+            _ => None,
+        }
+    }
+
+    pub fn as_u32(&self) -> Option<u32> {
+        match self {
+            Self::U32(v) => Some(*v),
+            _ => None,
+        }
+    }
+
+    pub fn as_i32(&self) -> Option<i32> {
+        match self {
+            Self::I32(v) => Some(*v),
+            _ => None,
+        }
+    }
+}