Implement camera system

src/fighter/manifest.rs

@@ -8,7 +8,7 @@ use strum_macros::EnumIter;
 
 use crate::{
     AppState,
-    fighter::{FighterAttributes, animation::AnimKind},
+    fighter::{FighterAttributes, FighterCameraProfile, animation::AnimKind},
     game_settings::GameSettings,
 };
 
@@ -22,6 +22,7 @@ pub struct FighterManifest {
     pub id: FighterId,
     pub model_path: String,
     pub attributes: FighterAttributes,
+    pub camera: FighterCameraProfile,
     pub animations: HashMap<AnimKind, String>,
 }
 
@@ -93,6 +94,13 @@ pub fn prepare_fighter_manifests(
             );
             return;
         }
+        if !manifest.camera.is_valid() {
+            fail(
+                &mut next_state,
+                &format!("{:?} has an invalid camera profile", manifest.id),
+            );
+            return;
+        }
         if registry.insert(manifest.id, handle.clone()).is_some() {
             fail(
                 &mut next_state,

src/fighter/mod.rs

@@ -4,6 +4,7 @@
 use bevy::prelude::*;
 use bevy_egui::EguiPrimaryContextPass;
 use bevy_ggrs::prelude::*;
+use serde::{Deserialize, Serialize};
 
 pub mod animation;
 pub mod attributes;
@@ -48,6 +49,27 @@ pub enum FighterFacingDirection {
     Left,
     Right,
 }
+#[derive(Component, Copy, Clone, Debug, Reflect, Serialize, Deserialize)]
+#[reflect(opaque)]
+pub struct FighterCameraProfile {
+    pub vertical_origin_offset: FGi32,
+    pub forward_extent: FGi32,
+    pub backward_extent: FGi32,
+    pub upward_extent: FGi32,
+    pub downward_extent: FGi32,
+    /// Reserved for future offscreen indicators and close-up camera modes.
+    pub visibility_radius: FGi32,
+}
+
+impl FighterCameraProfile {
+    pub fn is_valid(&self) -> bool {
+        self.forward_extent >= FGi32::ZERO
+            && self.backward_extent >= FGi32::ZERO
+            && self.upward_extent >= FGi32::ZERO
+            && self.downward_extent >= FGi32::ZERO
+            && self.visibility_radius >= FGi32::ZERO
+    }
+}
 
 impl FighterFacingDirection {
     pub fn to_sign(&self) -> FGi32 {
@@ -126,6 +148,7 @@ pub fn spawn_fighter(
     player_handle: usize,
     spawn_position: FGVec2,
     attributes: FighterAttributes,
+    camera_profile: FighterCameraProfile,
     animations: FighterAnimations,
     visual_root: WorldAssetRoot,
 ) {
@@ -142,6 +165,7 @@ pub fn spawn_fighter(
         FighterVelocity::default(),
         FighterTranslation(spawn_position),
         attributes,
+        camera_profile,
         visual_root,
         animations,
         FighterState::Fall(FallState),