Spread state context architecture (Fixes #18) (#30)

Reviewed-on: #30
Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>

src/fighter/collision.rs

@@ -1,9 +1,10 @@
 //! Resolving an integrated fighter position against the stage.
 
-use crate::fighter::state::FighterStateContext;
+use crate::fighter::ecb::FighterPreviousECB;
+use crate::fighter::{FighterECB, FighterPreviousTranslation, FighterTranslation};
 use crate::math::segment::FGSegment2d;
 use crate::math::vec::FGVec2;
-use crate::stage::line::StageLineID;
+use crate::stage::line::{StageCollision, StageLineID};
 /*
 pub fn collide_fighter_with_scene(
     fighters: Query<(&FighterECB, &mut FighterVelocity, &mut FighterTranslation)>,
@@ -38,16 +39,20 @@ pub struct AirCollisionWithStageResult {
 }
 
 pub fn air_collide_with_stage(
-    state_context: &FighterStateContext,
+    prev_translation: &FighterPreviousTranslation,
+    translation: &FighterTranslation,
+    prev_ecb: &FighterPreviousECB,
+    ecb: &FighterECB,
+    stage_collision: &StageCollision,
 ) -> Option<AirCollisionWithStageResult> {
     let ray_segment = FGSegment2d::new(
-        state_context.prev_translation.0 + state_context.prev_ecb.get_bottom_point(),
-        state_context.translation.0 + state_context.ecb.get_bottom_point(),
+        prev_translation.0 + prev_ecb.get_bottom_point(),
+        translation.0 + ecb.get_bottom_point(),
     );
 
     let mut intersect_results = vec![];
 
-    for (poly_idx, poly) in state_context.stage_collision.stage_polys.iter().enumerate() {
+    for (poly_idx, poly) in stage_collision.stage_polys.iter().enumerate() {
         if let Some(intersect_result) = poly.intersect_ray(ray_segment) {
             intersect_results.push((
                 AirCollisionWithStageResult {