Add pulsing effect when invulnerable/intangible, make airdodge make the player intangible. (#75)

Reviewed-on: #75
Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>

src/fighter/state/air.rs

@@ -169,6 +169,8 @@ mod tests {
             air_dodge_duration: 0,
             air_dodge_velocity: FGi32::ZERO,
             air_dodge_decay: FGi32::ZERO,
+            air_dodge_intangible_duration: 29,
+            air_dodge_intangible_start: 4,
         }
     }
 

src/fighter/state/air_dodge.rs

@@ -1,16 +1,13 @@
 use crate::{
     fighter::{
-        animation::AnimKind,
-        state::{
+        FighterInvulnerabilityState, animation::AnimKind, state::{
             CollisionContext, EnterContext, FighterState, FighterStateImpl, InterruptContext,
             UpdateContext,
             air::{self, AirborneStateCommon},
             fall::FallState,
             land::LandingType,
         },
-    },
-    input,
-    math::vec::FGVec2,
+    }, input, math::vec::FGVec2,
 };
 
 #[derive(Debug, Clone, Hash)]
@@ -32,6 +29,12 @@ impl FighterStateImpl for AirDodgeState {
     }
 
     fn update(&mut self, state_context: &mut UpdateContext) {
+        let airdodge_intangible_end = state_context.fighter_attributes.air_dodge_intangible_start + state_context.fighter_attributes.air_dodge_intangible_duration;
+        if state_context.animation_frame == state_context.fighter_attributes.air_dodge_intangible_start {
+            *state_context.vulnerability = FighterInvulnerabilityState::Intangible;
+        } else if state_context.animation_frame >= airdodge_intangible_end {
+            *state_context.vulnerability = FighterInvulnerabilityState::Vulnerable;
+        }
         state_context.velocity.0 *= state_context.fighter_attributes.air_dodge_decay;
 
         air::apply_air_motion(
@@ -62,6 +65,14 @@ impl FighterStateImpl for AirDodgeState {
     fn surface_policy(&self) -> super::SurfacePolicy {
         super::SurfacePolicy::Airborne(crate::fighter::surface::EcbLockPolicy::StartOnDetach)
     }
+    
+    fn on_exit(&mut self, state_context: &mut super::ExitContext) {
+        *state_context.vulnerability = FighterInvulnerabilityState::Vulnerable;
+    }
+    
+    fn name(&self) -> String {
+        Self::NAME.to_owned()
+    }
 }
 
 pub fn check_input(state_context: &InterruptContext) -> Option<FighterState> {

src/fighter/state/mod.rs

@@ -18,10 +18,7 @@ use crate::fighter::state::hitstun::HitstunState;
 use crate::fighter::surface::EcbLockPolicy;
 use crate::fighter::visual::FighterAnimations;
 use crate::fighter::{
-    Fighter, FighterECB, FighterFacingDirection, FighterHitboxes, FighterHitstop,
-    FighterHitstopShake, FighterHitstopShakeKind, FighterHitstopShakeRole, FighterPendingRespawn,
-    FighterPresentationSnap, FighterPreviousTranslation, FighterSurfaceState, FighterTranslation,
-    FighterVelocity, FighterDamage,
+    Fighter, FighterDamage, FighterECB, FighterFacingDirection, FighterHitboxes, FighterHitstop, FighterHitstopShake, FighterHitstopShakeKind, FighterHitstopShakeRole, FighterInvulnerabilityState, FighterPendingRespawn, FighterPresentationSnap, FighterPreviousTranslation, FighterSurfaceState, FighterTranslation, FighterVelocity,
 };
 use crate::game_settings::GameSettings;
 use crate::input::FighterInput;
@@ -173,6 +170,7 @@ impl EnterContext<'_> {
 pub struct ExitContext<'a> {
     pub hitboxes: &'a mut FighterHitboxes,
     pub surface: &'a mut FighterSurfaceState,
+    pub vulnerability: &'a mut FighterInvulnerabilityState,
 }
 
 pub struct UpdateContext<'a> {
@@ -183,6 +181,7 @@ pub struct UpdateContext<'a> {
     pub velocity: &'a mut FighterVelocity,
     pub surface: &'a mut FighterSurfaceState,
     pub knockback_velocity: &'a mut FighterKnockbackVelocity,
+    pub vulnerability: &'a mut FighterInvulnerabilityState,
     pub game_settings: &'a GameSettings,
     pub animation_frame: u32,
     pub fighter_attributes: &'a FighterAttributes,
@@ -265,6 +264,7 @@ pub struct FighterFrameQuery {
     pub prev_ecb: &'static FighterPreviousECB,
     pub facing_direction: &'static mut FighterFacingDirection,
     pub animation_frame: &'static mut FighterAnimationFrame,
+    pub vulnerability: &'static mut FighterInvulnerabilityState,
     pub fighter: &'static Fighter,
 }
 
@@ -330,6 +330,7 @@ impl<'w, 's> FighterFrameQueryItem<'w, 's> {
         ExitContext {
             hitboxes: &mut self.hitboxes,
             surface: &mut self.surface,
+            vulnerability: &mut self.vulnerability,
         }
     }
 
@@ -350,6 +351,7 @@ impl<'w, 's> FighterFrameQueryItem<'w, 's> {
             knockback_velocity: &mut self.knockback_velocity,
             game_settings,
             animation_frame: self.animation_frame.frame,
+            vulnerability: &mut self.vulnerability,
             fighter_attributes: attributes,
             attack_scripts,
             attack_script_assets,