fp: Add waves to mob spawner

feely_pona.cpp

@@ -1414,7 +1414,16 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input
                     link = FP_SentinelList_Erase(&entity->spawn_list, link, game->chunk_pool);
             }
 
-            if (entity->spawn_list.size < entity->spawn_cap) { // NOTE: Spawn new entities
+            if (entity->enemies_spawned_this_wave >= entity->enemies_per_wave) {
+                // NOTE: If all enemies for the current wave have been spawned,
+                // wait for the cooldown period before starting next wave
+
+                if (input->timer_s >= entity->wave_cooldown_timestamp_s) {
+                    entity->current_wave++;
+                    entity->enemies_per_wave         *= 2; // NOTE: Double the enemies for the next wave
+                    entity->enemies_spawned_this_wave = 0;
+                }
+            } else if (entity->spawn_list.size < entity->spawn_cap) { // NOTE: Spawn new entities
                 if (input->timer_s >= entity->next_spawn_timestamp_s) {
                     entity->next_spawn_timestamp_s = DQN_CAST(uint64_t)(input->timer_s + 5.f);
 
@@ -1442,6 +1451,14 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input
                         waypoint->data.arrive                          = FP_GameWaypointArrive_WhenWithinEntitySize;
                         waypoint->data.value                           = 1.5f;
                     }
+                    
+                    entity->enemies_spawned_this_wave++;
+
+                    // NOTE: If all enemies for the current wave have been spawned
+                    // set the cooldown time for the next wave
+                    if (entity->enemies_spawned_this_wave >= entity->enemies_per_wave) {
+                        entity->wave_cooldown_timestamp_s = DQN_CAST(uint64_t)(input->timer_s + 30.f); // NOTE: 30s cooldown
+                    }
                 }
             }
         }

feely_pona_entity_create.cpp

@@ -119,6 +119,11 @@ static FP_GameEntityHandle FP_Entity_CreateMobSpawner(FP_Game *game, Dqn_V2 pos,
     entity->spawn_cap                  = spawn_cap;
     entity->spawn_list                 = FP_SentinelList_Init<FP_GameEntityHandle>(game->chunk_pool);
 
+    entity->current_wave               = 1;
+    entity->enemies_per_wave           = 5;
+    entity->enemies_spawned_this_wave  = 0;
+    entity->wave_cooldown_timestamp_s  = 0;
+
     FP_GameShape *shape                = Dqn_FArray_Make(&entity->shapes, Dqn_ZeroMem_Yes);
     shape->type                        = FP_GameShapeType_Rect;
     shape->p1                          = {};

feely_pona_game.h

@@ -177,6 +177,11 @@ struct FP_GameEntity
     uint64_t                              next_spawn_timestamp_s;
     uint64_t                              spawn_cap;
 
+    uint64_t                              current_wave;
+    uint64_t                              enemies_per_wave;
+    uint64_t                              enemies_spawned_this_wave;
+    uint64_t                              wave_cooldown_timestamp_s;
+
     uint64_t                              flags;
     uint64_t                              hp;
     FP_GameDirection                      direction;