fp: Separate entity input from update

feely_pona.cpp

@@ -816,6 +816,8 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input
     }
 
     Dqn_ProfilerZone update_zone = Dqn_Profiler_BeginZoneWithIndex(DQN_STRING8("FP_Update: Entity loop"), FP_ProfileZone_FPUpdate_EntityLoop);
+
+    // NOTE: Handle input ==========================================================================
     for (FP_GameEntityIterator it = {}; FP_Game_DFSPostOrderWalkEntityTree(game, &it, game->root_entity); ) {
         FP_GameEntity *entity  = it.entity;
         entity->alive_time_s  += PHYSICS_STEP;
@@ -982,6 +984,13 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input
             }
         }
 
+        // NOTE: Move entity by mouse ==============================================================
+        if (game->active_entity == entity->handle && entity->flags & FP_GameEntityFlag_MoveByMouse) {
+            entity->velocity          = {};
+            acceleration_meters_per_s = {};
+            entity->local_pos += input->mouse_p_delta;
+        }
+
         // NOTE: Core equations of motion ==========================================================
         bool has_collision = false;
         {
@@ -1073,14 +1082,15 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input
             }
         }
 
-        // NOTE: Move entity by mouse ==============================================================
+        // NOTE: Tick the state machine
-        if (game->active_entity == entity->handle && entity->flags & FP_GameEntityFlag_MoveByMouse) {
+        FP_EntityActionStateMachine(game, input, entity, dir_vector);
-            if (entity->flags & FP_GameEntityFlag_MoveByMouse) {
+    }
-                entity->velocity   = {};
-                entity->local_pos += input->mouse_p_delta;
-            }
-        }
 
+    // NOTE: Update entity =========================================================================
+    for (FP_GameEntityIterator it = {}; FP_Game_DFSPostOrderWalkEntityTree(game, &it, game->root_entity); ) {
+        FP_GameEntity *entity  = it.entity;
+
+        // NOTE: Derive dynmamic bounding boxes ====================================================
         if (entity->flags & FP_GameEntityFlag_DeriveHitBoxFromChildrenBoundingBox) {
             Dqn_Rect children_bbox = {};
 
@@ -1101,9 +1111,6 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input
             entity->local_hit_box_size   = padded_bbox.size;
         }
 
-        // NOTE: Handle input on entity ============================================================
-        FP_EntityActionStateMachine(game, input, entity, dir_vector);
-
         // NOTE: Mob spawner =======================================================================
         if (entity->flags & FP_GameEntityFlag_MobSpawner) {
 
@@ -1144,55 +1151,55 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input
                 }
             }
         }
+
+        // NOTE: Do attacks ============================================================================
+        {
+            Dqn_Profiler_ZoneScopeWithIndex("FP_Update: Attacks", FP_ProfileZone_FPUpdate_Attacks);
+            FP_GameEntity *attacker = entity;
+
+            // NOTE: Resolve attack boxes
+            if (!Dqn_V2_Area(attacker->attack_box_size))
+                continue;
+
+            Dqn_Rect attacker_box     = FP_Game_CalcEntityAttackWorldHitBox(game, attacker->handle);
+            Dqn_V2 attacker_world_pos = FP_Game_CalcEntityWorldPos(game, attacker->handle);
+
+            for (FP_GameEntityIterator defender_it = {}; FP_Game_DFSPostOrderWalkEntityTree(game, &defender_it, game->root_entity); ) {
+                FP_GameEntity *defender = defender_it.entity;
+                if (defender->handle == attacker->handle)
+                    continue;
+
+                if ((defender->flags & FP_GameEntityFlag_Attackable) == 0)
+                    continue;
+
+                Dqn_Rect defender_box = FP_Game_CalcEntityWorldHitBox(game, defender->handle);
+                if (!Dqn_Rect_Intersects(attacker_box, defender_box))
+                    continue;
+
+                // NOTE: Do HP =========================================================================
+                defender->hp -= 1;
+                if (defender->hp <= 0)
+                    defender->is_dying = true;
+
+                // NOTE: Kickback ======================================================================
+                Dqn_V2 defender_world_pos = Dqn_Rect_Center(defender_box);
+                Dqn_V2 attack_dir_vector  = {};
+                if (attacker_world_pos.x < defender_world_pos.x)
+                    attack_dir_vector.x = 1.f;
+                else
+                    attack_dir_vector.x = -1.f;
+
+                Dqn_V2 acceleration  = attack_dir_vector * 500'000.f;
+                Dqn_f32 t            = DQN_CAST(Dqn_f32)DQN_SQUARED(PHYSICS_STEP);
+                Dqn_f32 t_squared    = DQN_SQUARED(t);
+
+                Dqn_V2 delta_p     = (acceleration * 0.5f * t_squared) + (defender->velocity * t);
+                defender->velocity = (acceleration * t) + defender->velocity * 2.0f;
+            }
+        }
     }
     Dqn_Profiler_EndZone(update_zone);
 
-    // NOTE: Do attacks ============================================================================
-    auto attack_zone = Dqn_Profiler_BeginZoneWithIndex(DQN_STRING8("FP_Update: Attacks"), FP_ProfileZone_FPUpdate_Attacks);
-    for (FP_GameEntityIterator attacker_it = {}; FP_Game_DFSPostOrderWalkEntityTree(game, &attacker_it, game->root_entity); ) {
-        FP_GameEntity *attacker = attacker_it.entity;
-
-        // NOTE: Resolve attack boxes
-        if (!Dqn_V2_Area(attacker->attack_box_size))
-            continue;
-
-        Dqn_Rect attacker_box     = FP_Game_CalcEntityAttackWorldHitBox(game, attacker->handle);
-        Dqn_V2 attacker_world_pos = FP_Game_CalcEntityWorldPos(game, attacker->handle);
-
-        for (FP_GameEntityIterator defender_it = {}; FP_Game_DFSPostOrderWalkEntityTree(game, &defender_it, game->root_entity); ) {
-            FP_GameEntity *defender = defender_it.entity;
-            if (defender->handle == attacker->handle)
-                continue;
-
-            if ((defender->flags & FP_GameEntityFlag_Attackable) == 0)
-                continue;
-
-            Dqn_Rect defender_box = FP_Game_CalcEntityWorldHitBox(game, defender->handle);
-            if (!Dqn_Rect_Intersects(attacker_box, defender_box))
-                continue;
-
-            // NOTE: Do HP =========================================================================
-            defender->hp -= 1;
-            if (defender->hp <= 0)
-                defender->is_dying = true;
-
-            // NOTE: Kickback ======================================================================
-            Dqn_V2 defender_world_pos = Dqn_Rect_Center(defender_box);
-            Dqn_V2 attack_dir_vector  = {};
-            if (attacker_world_pos.x < defender_world_pos.x)
-                attack_dir_vector.x = 1.f;
-            else
-                attack_dir_vector.x = -1.f;
-
-            Dqn_V2 acceleration  = attack_dir_vector * 500'000.f;
-            Dqn_f32 t            = DQN_CAST(Dqn_f32)DQN_SQUARED(PHYSICS_STEP);
-            Dqn_f32 t_squared    = DQN_SQUARED(t);
-
-            Dqn_V2 delta_p     = (acceleration * 0.5f * t_squared) + (defender->velocity * t);
-            defender->velocity = (acceleration * t) + defender->velocity * 2.0f;
-        }
-    }
-    Dqn_Profiler_EndZone(attack_zone);
 }
 
 void FP_Render(FP_Game *game, TELY_Platform *platform, TELY_Renderer *renderer)