fp: Integrate clinger as a spawnable mob

build_assets.bat

@@ -13,3 +13,4 @@ if not exist "%sprite_packer%" (
 %sprite_packer% 4096x4096 %script_dir%\Data\Textures\sprite_spec.txt %script_dir%\Data\Textures\terry_resized_25%% || exit /b 1
 %sprite_packer% 4096x2048 %script_dir%\Data\Textures\sprite_spec.txt %script_dir%\Data\Textures\terry_merchant_resized_25%% || exit /b 1
 %sprite_packer% 4096x2048 %script_dir%\Data\Textures\sprite_spec.txt %script_dir%\Data\Textures\smoochie_resized_25%% || exit /b 1
+%sprite_packer% 4096x2048 %script_dir%\Data\Textures\sprite_spec.txt %script_dir%\Data\Textures\clinger_resized_25%% || exit /b 1

feely_pona.cpp

@@ -15,6 +15,7 @@ struct FP_GlobalAnimations
     Dqn_String8 terry_attack_side     = DQN_STRING8("terry_attack_side");
     Dqn_String8 terry_attack_down     = DQN_STRING8("terry_attack_down");
     Dqn_String8 terry_merchant        = DQN_STRING8("terry_merchant");
+
     Dqn_String8 smoochie_walk_up      = DQN_STRING8("smoochie_walk_up");
     Dqn_String8 smoochie_walk_down    = DQN_STRING8("smoochie_walk_down");
     Dqn_String8 smoochie_walk_left    = DQN_STRING8("smoochie_walk_left");
@@ -23,6 +24,13 @@ struct FP_GlobalAnimations
     Dqn_String8 smoochie_hurt_side    = DQN_STRING8("smoochie_hurt_side");
     Dqn_String8 smoochie_attack_heart = DQN_STRING8("smoochie_attack_heart");
     Dqn_String8 smoochie_death        = DQN_STRING8("smoochie_death");
+
+    Dqn_String8 clinger_attack_down = DQN_STRING8("clinger_attack_down");
+    Dqn_String8 clinger_attack_side = DQN_STRING8("clinger_attack_side");
+    Dqn_String8 clinger_attack_up   = DQN_STRING8("clinger_attack_up");
+    Dqn_String8 clinger_death       = DQN_STRING8("clinger_death");
+    Dqn_String8 clinger_walk_up     = DQN_STRING8("clinger_walk_up");
+    Dqn_String8 clinger_walk_down   = DQN_STRING8("clinger_walk_down");
 }
 g_anim_names;
 
@@ -176,6 +184,7 @@ void TELY_DLL_Init(void *user_data)
         game->terry_sprite_sheet          = FP_LoadSpriteSheetFromSpec(platform, assets, &platform->arena, DQN_STRING8("terry_resized_25%"));
         game->terry_merchant_sprite_sheet = FP_LoadSpriteSheetFromSpec(platform, assets, &platform->arena, DQN_STRING8("terry_merchant_resized_25%"));
         game->smoochie_sprite_sheet       = FP_LoadSpriteSheetFromSpec(platform, assets, &platform->arena, DQN_STRING8("smoochie_resized_25%"));
+        game->clinger_sprite_sheet        = FP_LoadSpriteSheetFromSpec(platform, assets, &platform->arena, DQN_STRING8("clinger_resized_25%"));
     }
 
     game->entities    = Dqn_VArray_Init<FP_GameEntity>(&platform->arena, 1024 * 8);
@@ -589,6 +598,116 @@ void FP_EntityActionStateMachine(FP_Game *game, TELY_PlatformInput *input, FP_Ga
             }
         } break;
 
+        case FP_EntityType_Clinger: {
+            FP_EntityClingerState *state = DQN_CAST(FP_EntityClingerState *)&action->state;
+            TELY_AssetSpriteSheet *sheet = &game->clinger_sprite_sheet;
+
+            switch (*state) {
+                case FP_EntityClingerState_Nil: {
+                    action->next_state = FP_EntityClingerState_Idle;
+                } break;
+
+                case FP_EntityClingerState_Idle: {
+                    if (entering_new_state) {
+                        TELY_AssetAnimatedSprite sprite = TELY_Asset_MakeAnimatedSprite(sheet, g_anim_names.clinger_walk_down, TELY_AssetFlip_No);
+                        uint64_t duration_ms              = FP_GAME_ENTITY_ACTION_INFINITE_TIMER;
+                        FP_Game_EntityActionReset(game, entity->handle, duration_ms, sprite);
+                    }
+
+                    if (we_are_clicked_entity) {
+                        if (TELY_Platform_InputScanCodeIsPressed(input, TELY_PlatformInputScanCode_J) ||
+                            TELY_Platform_InputGamepadButtonCodeIsPressed(input, 0, TELY_PlatformInputGamepadButtonCode_X)) {
+                            action->next_state = FP_EntityClingerState_Attack;
+                        } else if (dir_vector.x || dir_vector.y) {
+                            action->next_state = FP_EntityClingerState_Run;
+                        }
+                    }
+
+                    if (entity_has_velocity) {
+                        action->next_state = FP_EntityClingerState_Run;
+                    }
+                } break;
+
+                case FP_EntityClingerState_Attack: {
+                    uint32_t asset_flip             = {};
+                    Dqn_String8 desired_action_name = {};
+                    switch (entity->direction) {
+                        case FP_GameDirection_Up:    desired_action_name = g_anim_names.clinger_attack_up;   break;
+                        case FP_GameDirection_Down:  desired_action_name = g_anim_names.clinger_attack_down; break;
+                        case FP_GameDirection_Left:  desired_action_name = g_anim_names.clinger_attack_side; asset_flip |= TELY_AssetFlip_X; break;
+                        case FP_GameDirection_Right: desired_action_name = g_anim_names.clinger_attack_side; break;
+                    }
+
+                    if (entering_new_state) {
+                        TELY_AssetAnimatedSprite sprite = TELY_Asset_MakeAnimatedSprite(sheet, desired_action_name, DQN_CAST(TELY_AssetFlip)asset_flip);
+                        uint64_t duration_ms            = sprite.anim->count * sprite.anim->ms_per_frame;
+                        FP_Game_EntityActionReset(game, entity->handle, duration_ms, sprite);
+                    }
+
+                    if (action_has_finished)
+                        action->next_state = FP_EntityClingerState_Idle;
+                } break;
+
+                case FP_EntityClingerState_Death: {
+                    // TODO(doyle): Implement
+                } break;
+
+                case FP_EntityClingerState_Run: {
+                    Dqn_String8 desired_action_name = {};
+                    switch (entity->direction) {
+                        case FP_GameDirection_Up:    desired_action_name = g_anim_names.clinger_walk_up;   break;
+                        case FP_GameDirection_Down:  desired_action_name = g_anim_names.clinger_walk_down; break;
+                        case FP_GameDirection_Left:  desired_action_name = g_anim_names.clinger_walk_down; break;
+                        case FP_GameDirection_Right: desired_action_name = g_anim_names.clinger_walk_down; break;
+                    }
+
+                    if (entering_new_state || action->sprite.anim->label != desired_action_name) {
+                        TELY_AssetAnimatedSprite sprite = TELY_Asset_MakeAnimatedSprite(sheet, desired_action_name, TELY_AssetFlip_No);
+                        uint64_t duration_ms              = FP_GAME_ENTITY_ACTION_INFINITE_TIMER;
+                        FP_Game_EntityActionReset(game, entity->handle, duration_ms, sprite);
+                    }
+
+                    if (we_are_clicked_entity) {
+                        if (TELY_Platform_InputScanCodeIsPressed(input, TELY_PlatformInputScanCode_J) ||
+                            TELY_Platform_InputGamepadButtonCodeIsPressed(input, 0, TELY_PlatformInputGamepadButtonCode_X)) {
+                            action->next_state = FP_EntityClingerState_Attack;
+                        }
+                    }
+
+                    if (!entity_has_velocity) {
+                        action->next_state = FP_EntityClingerState_Idle;
+                    }
+                } break;
+            }
+
+            if (*state == FP_EntityClingerState_Attack) { // NOTE: Position the attack box
+                entity->attack_box_size = entity->local_hit_box_size;
+                switch (entity->direction) {
+                    case FP_GameDirection_Left: {
+                        entity->attack_box_offset = Dqn_V2_InitNx2(entity->local_hit_box_offset.x - entity->attack_box_size.w,
+                                                                   entity->local_hit_box_offset.y);
+                    } break;
+
+                    case FP_GameDirection_Right: {
+                        entity->attack_box_offset = Dqn_V2_InitNx2(entity->local_hit_box_offset.x + entity->attack_box_size.w,
+                                                                   entity->local_hit_box_offset.y);
+                    } break;
+
+                    case FP_GameDirection_Up: {
+                        entity->attack_box_offset = Dqn_V2_InitNx2(entity->local_hit_box_offset.x,
+                                                                   entity->local_hit_box_offset.y - entity->attack_box_size.h);
+                    } break;
+
+                    case FP_GameDirection_Down: {
+                        entity->attack_box_offset = Dqn_V2_InitNx2(entity->local_hit_box_offset.x,
+                                                                   entity->local_hit_box_offset.y + entity->attack_box_size.h);
+                    } break;
+                }
+            } else {
+                entity->attack_box_size = {};
+            }
+        } break;
+
         case FP_EntityType_Merchant: {
             FP_EntityTerryMerchantState *state = DQN_CAST(FP_EntityTerryMerchantState *)&action->state;
             TELY_AssetSpriteSheet  *sheet      = &game->terry_merchant_sprite_sheet;
@@ -776,7 +895,14 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input
                             // from the entity's current state
                             entity->action.next_state = FP_EntitySmoochieState_AttackDown;
                         } break;
+
+                        case FP_EntityType_Clinger: {
+                            entity->action.next_state = FP_EntityClingerState_Attack;
+                        } break;
                     }
+
+                    // NOTE: Aggro makes the entity attack Terry, we will
+                    // exit here preserving the waypoint in the entity.
                     break;
                 } else {
                     FP_SentinelList_Erase(&entity->waypoints, waypoint_link, game->chunk_pool);
@@ -952,6 +1078,10 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input
 
                     Dqn_V2 entity_world_pos                        = FP_Game_CalcEntityWorldPos(game, entity->handle);
                     FP_SentinelListLink<FP_GameEntityHandle> *link = FP_SentinelList_Make(&entity->spawn_list, game->chunk_pool);
+
+                    if (Dqn_PCG32_NextF32(&game->rng) >= 0.5f)
+                        link->data = FP_Entity_CreateClinger(game, entity_world_pos, "Clinger");
+                    else
                         link->data = FP_Entity_CreateSmoochie(game, entity_world_pos, "Smoochie");
 
                     // NOTE: Setup the mob with waypoints

feely_pona_entity.cpp

@@ -35,6 +35,25 @@ static FP_GameEntityHandle FP_Entity_CreateWaypointF(FP_Game *game, Dqn_V2 pos,
     return result;
 }
 
+static FP_GameEntityHandle FP_Entity_CreateClinger(FP_Game *game, Dqn_V2 pos, DQN_FMT_STRING_ANNOTATE char const *fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    FP_GameEntity      *entity = FP_Game_MakeEntityPointerFV(game, fmt, args);
+    FP_GameEntityHandle result = entity->handle;
+    va_end(args);
+
+    entity->type                 = FP_EntityType_Clinger;
+    entity->hp                   = 3;
+    entity->local_pos            = pos;
+    entity->sprite_height.meters = 1.6f;
+    entity->local_hit_box_size   = FP_Game_MetersToPixelsNx2(game, 0.4f, 1.7f);
+    FP_Entity_AddDebugEditorFlags(game, entity->handle);
+    entity->flags              |= FP_GameEntityFlag_NonTraversable;
+    entity->flags              |= FP_GameEntityFlag_Attackable;
+    return result;
+}
+
 static FP_GameEntityHandle FP_Entity_CreateSmoochie(FP_Game *game, Dqn_V2 pos, DQN_FMT_STRING_ANNOTATE char const *fmt, ...)
 {
     va_list args;

feely_pona_entity.h

@@ -9,6 +9,7 @@ enum FP_EntityType
     FP_EntityType_Terry,
     FP_EntityType_Smoochie,
     FP_EntityType_Merchant,
+    FP_EntityType_Clinger,
 };
 
 enum FP_EntityTerryState
@@ -32,6 +33,15 @@ enum FP_EntitySmoochieState
     FP_EntitySmoochieState_Run,
 };
 
+enum FP_EntityClingerState
+{
+    FP_EntityClingerState_Nil,
+    FP_EntityClingerState_Idle,
+    FP_EntityClingerState_Attack,
+    FP_EntityClingerState_Death,
+    FP_EntityClingerState_Run,
+};
+
 enum FP_EntityTerryMerchantState
 {
     FP_EntityTerryMerchantState_Nil,

feely_pona_game.h

@@ -192,6 +192,7 @@ struct FP_Game
     TELY_AssetSpriteSheet                 terry_sprite_sheet;
     TELY_AssetSpriteSheet                 smoochie_sprite_sheet;
     TELY_AssetSpriteSheet                 terry_merchant_sprite_sheet;
+    TELY_AssetSpriteSheet                 clinger_sprite_sheet;
 
     FP_GameEntity                        *root_entity;
     FP_GameEntity                        *entity_free_list;