Initial work on FFI

src/static_data/mod.rs

@@ -1,3 +1,4 @@
+use crate::StringKey;
 #[doc(inline)]
 pub use growth_rates::*;
 #[doc(inline)]
@@ -14,6 +15,7 @@ pub use species_data::*;
 pub use statistic_set::*;
 #[doc(inline)]
 pub use statistics::*;
+use std::fmt::{Display, Formatter};
 
 /// Growth rates define how fast a Pokemon can level up.
 mod growth_rates;
@@ -31,3 +33,29 @@ mod species_data;
 mod statistic_set;
 /// Statistics are numerical values on Pokemon that are used in battle.
 mod statistics;
+
+/// A parameter for an effect. This is basically a simple way to dynamically store multiple different
+/// primitives on data.
+#[derive(PartialEq, Debug)]
+#[cfg_attr(feature = "wasm", derive(unique_type_id_derive::UniqueTypeId))]
+pub enum EffectParameter {
+    /// A boolean value.
+    Bool(bool),
+    /// An integer value. Stored as a 64 bit int to deal with potentially large numbers.
+    Int(i64),
+    /// A float value. Stored as a 32 bit float.
+    Float(f32),
+    /// A string value.
+    String(StringKey),
+}
+
+impl Display for EffectParameter {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        match self {
+            EffectParameter::Bool(v) => f.write_fmt(format_args!("EffectParameter::Bool({})", v)),
+            EffectParameter::Int(v) => f.write_fmt(format_args!("EffectParameter::Int({})", v)),
+            EffectParameter::Float(v) => f.write_fmt(format_args!("EffectParameter::Float({})", v)),
+            EffectParameter::String(v) => f.write_fmt(format_args!("EffectParameter::String({})", v)),
+        }
+    }
+}