Implements struggle.

gen_7_scripts/src/moves/mod.rs

@@ -13,3 +13,4 @@ pub mod drain;
 pub mod light_screen;
 pub mod multi_hit_move;
 pub mod reflect;
+pub mod struggle;

gen_7_scripts/src/moves/struggle.rs

@@ -0,0 +1,55 @@
+use crate::script;
+use core::any::Any;
+use pkmn_lib_interface::app_interface::{DamageSource, ExecutingMove, Pokemon, TurnChoice};
+use pkmn_lib_interface::handling::{Script, ScriptCapabilities};
+
+script!(Struggle, "struggle");
+
+impl Script for Struggle {
+    fn new() -> Self {
+        Self {}
+    }
+
+    fn get_name(&self) -> &'static str {
+        Self::get_const_name()
+    }
+
+    fn get_capabilities(&self) -> &[ScriptCapabilities] {
+        &[
+            ScriptCapabilities::ChangeEffectiveness,
+            ScriptCapabilities::IsInvulnerable,
+            ScriptCapabilities::ChangeNumberOfHits,
+            ScriptCapabilities::OnSecondaryEffect,
+        ]
+    }
+
+    fn change_effectiveness(
+        &self,
+        _move: ExecutingMove,
+        _target: Pokemon,
+        _hit: u8,
+        effectiveness: &mut f32,
+    ) {
+        *effectiveness = 1.0;
+    }
+
+    fn is_invulnerable(&self, _move: ExecutingMove, _target: Pokemon, invulnerable: &mut bool) {
+        *invulnerable = false;
+    }
+
+    fn change_number_of_hits(&self, _choice: TurnChoice, number_of_hits: &mut u8) {
+        *number_of_hits = 1
+    }
+
+    fn on_secondary_effect(&self, mv: ExecutingMove, _target: Pokemon, hit: u8) {
+        let mut damage = mv.user().max_health() / 4;
+        if damage == 0 {
+            damage = 1
+        }
+        mv.user().damage(damage, DamageSource::Struggle);
+    }
+
+    fn as_any(&self) -> &dyn Any {
+        self
+    }
+}