sm64

fish.inc.c (8559B)

---

 
 /**
  * @file fish.inc.c
  * Implements behaviour and spawning for fish located in the Secret Aquarium and other levels.
  */
 
 /**
  * Spawns fish with settings chosen by oBhvParams2ndByte.
  * These settings are animations, color, and spawn quantity.
  */
 static void fish_spawner_act_spawn(void) {
     s32 i;
     s32 schoolQuantity;
     s16 model;
     f32 minDistToMario;
     const struct Animation * const *fishAnimation;
 
     switch (o->oBhvParams2ndByte) {
         // Cases need to be on one line to match with and without optimizations.
         case FISH_SPAWNER_BP_MANY_BLUE:
             model = MODEL_FISH;      schoolQuantity = 20; minDistToMario = 1500.0f; fishAnimation = blue_fish_seg3_anims_0301C2B0;
             break;
 
         case FISH_SPAWNER_BP_FEW_BLUE:
             model = MODEL_FISH;      schoolQuantity = 5;  minDistToMario = 1500.0f; fishAnimation = blue_fish_seg3_anims_0301C2B0;
             break;
 
         case FISH_SPAWNER_BP_MANY_CYAN:
             model = MODEL_CYAN_FISH; schoolQuantity = 20; minDistToMario = 1500.0f; fishAnimation = cyan_fish_seg6_anims_0600E264;
             break;
 
         case FISH_SPAWNER_BP_FEW_CYAN:
             model = MODEL_CYAN_FISH; schoolQuantity = 5;  minDistToMario = 1500.0f; fishAnimation = cyan_fish_seg6_anims_0600E264;
             break;
     }
 
     // Spawn and animate the schoolQuantity of fish if Mario enters render distance
     // or the stage is Secret Aquarium.
     // Fish moves randomly within a range of 700.0f.
     if (o->oDistanceToMario < minDistToMario || gCurrLevelNum == LEVEL_SA) {
         for (i = 0; i < schoolQuantity; i++) {
             struct Object *fishObject = spawn_object(o, model, bhvFish);
             fishObject->oBhvParams2ndByte = o->oBhvParams2ndByte;
             obj_init_animation_with_sound(fishObject, fishAnimation, 0);
             obj_translate_xyz_random(fishObject, 700.0f);
         }
         o->oAction = FISH_SPAWNER_ACT_IDLE;
     }
 }
 
 /**
  * Sets the spawner to respawn fish if the stage is not Secret Aquarium and
  * Mario is more than 2000 units higher.
  */
 static void fish_spawner_act_idle(void) {
     if ((gCurrLevelNum != LEVEL_SA) && (gMarioObject->oPosY - o->oPosY > 2000.0f)) {
         o->oAction = FISH_SPAWNER_ACT_RESPAWN;
     }
 }
 
 /**
  * Temp action that sets the action to spawn fish. This triggers the old fish to despawn.
  */
 static void fish_spawner_act_respawn(void) {
     o->oAction = FISH_SPAWNER_ACT_SPAWN;
 }
 
 static void (*sFishSpawnerActions[])(void) = {
     fish_spawner_act_spawn,
     fish_spawner_act_idle,
     fish_spawner_act_respawn,
 };
 
 void bhv_fish_spawner_loop(void) {
     cur_obj_call_action_function(sFishSpawnerActions);
 }
 
 /**
  * Allows the fish to swim vertically.
  */
 static void fish_vertical_roam(s32 speed) {
     f32 parentY = o->parentObj->oPosY;
 
     // If the stage is Secret Aquarium, the fish can
     // travel as far vertically as they wish.
     if (gCurrLevelNum == LEVEL_SA) {
         if (500.0f < absf(o->oPosY - o->oFishGoalY)) {
             speed = 10;
         }
         o->oPosY = approach_f32_symmetric(o->oPosY, o->oFishGoalY, speed);
 
      // Allow the fish to roam vertically if within
      // range of the fish spawner.
      } else if (parentY - 100.0f - o->oFishDepthDistance < o->oPosY
                && o->oPosY < parentY + 1000.0f + o->oFishDepthDistance) {
         o->oPosY = approach_f32_symmetric(o->oPosY, o->oFishGoalY, speed);
     }
 }
 
 /**
  * Fish action that randomly roams within a set range.
  */
 static void fish_act_roam(void) {
     f32 fishY = o->oPosY - gMarioObject->oPosY;
 
     // Alters speed of animation for natural movement.
     if (o->oTimer < 10) {
         cur_obj_init_animation_with_accel_and_sound(0, 2.0f);
     } else {
         cur_obj_init_animation_with_accel_and_sound(0, 1.0f);
     }
 
     // Initializes some variables when the fish first begins roaming.
     if (o->oTimer == 0) {
         o->oForwardVel = random_float() * 2 + 3.0f;
         if (gCurrLevelNum == LEVEL_SA) {
             o->oFishHeightOffset = random_float() * 700.0f;
         } else {
             o->oFishHeightOffset = random_float() * 100.0f;
         }
         o->oFishRoamDistance = random_float() * 500 + 200.0f;
     }
 
     o->oFishGoalY = gMarioObject->oPosY + o->oFishHeightOffset;
 
     // Rotate the fish towards Mario.
     cur_obj_rotate_yaw_toward(o->oAngleToMario, 0x400);
 
     if (o->oPosY < o->oFishWaterLevel - 50.0f) {
         if (fishY < 0.0f) {
             fishY = 0.0f - fishY;
         }
         if (fishY < 500.0f) {
             fish_vertical_roam(2);
         } else {
             fish_vertical_roam(4);
         }
 
     // Don't let the fish leave the water vertically.
     } else {
         o->oPosY = o->oFishWaterLevel - 50.0f;
         if (fishY > 300.0f) {
             o->oPosY = o->oPosY - 1.0f;
         }
     }
 
     // Flee from Mario if the fish gets too close.
     if (o->oDistanceToMario < o->oFishRoamDistance + 150.0f) {
         o->oAction = FISH_ACT_FLEE;
     }
 }
 
 /**
  * Interactively maneuver fish in relation to its distance from other fish and Mario.
  */
 static void fish_act_flee(void) {
     f32 fishY = o->oPosY - gMarioObject->oPosY;
     UNUSED s32 distance;
 
     o->oFishGoalY = gMarioObject->oPosY + o->oFishHeightOffset;
 
     // Initialize some variables when the flee action first starts.
     if (o->oTimer == 0) {
         o->oFishActiveDistance = random_float() * 300.0f;
         o->oFishYawVel = random_float() * 1024.0f + 1024.0f;
         o->oFishGoalVel = random_float() * 4.0f + 8.0f + 5.0f;
 
         if (o->oDistanceToMario < 600.0f) {
             distance = 1;
         } else {
             distance = (s32)(1.0 / (o->oDistanceToMario / 600.0));
         }
 
         distance *= 127;
 
         cur_obj_play_sound_2(SOUND_GENERAL_MOVING_WATER);
     }
 
     // Speed the animation up over time.
     if (o->oTimer < 20) {
         cur_obj_init_animation_with_accel_and_sound(0, 4.0f);
     } else {
         cur_obj_init_animation_with_accel_and_sound(0, 1.0f);
     }
 
     // Accelerate over time.
     if (o->oForwardVel < o->oFishGoalVel) {
         o->oForwardVel = o->oForwardVel + 0.5;
     }
 
     o->oFishGoalY = gMarioObject->oPosY + o->oFishHeightOffset;
 
     // Rotate fish away from Mario.
     cur_obj_rotate_yaw_toward(o->oAngleToMario + 0x8000, o->oFishYawVel);
 
     if (o->oPosY < o->oFishWaterLevel - 50.0f) {
         if (fishY < 0.0f) {
             fishY = 0.0f - fishY;
         }
 
         if (fishY < 500.0f) {
             fish_vertical_roam(2);
         } else {
             fish_vertical_roam(4);
         }
 
     // Don't let the fish leave the water vertically.
     } else {
         o->oPosY = o->oFishWaterLevel - 50.0f;
         if (fishY > 300.0f) {
             o->oPosY -= 1.0f;
         }
     }
 
     // If distance to Mario is too great, then set fish to active.
     if (o->oDistanceToMario > o->oFishActiveDistance + 500.0f) {
         o->oAction = FISH_ACT_ROAM;
     }
 }
 
 /**
  * Animate fish and alter scaling at random for a magnifying effect from the water.
  */
 static void fish_act_init(void) {
     cur_obj_init_animation_with_accel_and_sound(0, 1.0f);
     o->header.gfx.animInfo.animFrame = (s16)(random_float() * 28.0f);
     o->oFishDepthDistance = random_float() * 300.0f;
     cur_obj_scale(random_float() * 0.4 + 0.8);
     o->oAction = FISH_ACT_ROAM;
 }
 
 static void (*sFishActions[])(void) = {
     fish_act_init,
     fish_act_roam,
     fish_act_flee,
 };
 
 /**
  * Main loop for fish
  */
 void bhv_fish_loop(void) {
     UNUSED u8 filler[16];
     cur_obj_scale(1.0f);
 
     // oFishWaterLevel tracks if a fish has roamed out of water.
     // This can't happen in Secret Aquarium, so set it to 0.
     o->oFishWaterLevel = find_water_level(o->oPosX, o->oPosZ);
     if (gCurrLevelNum == LEVEL_SA) {
         o->oFishWaterLevel = 0.0f;
     }
 
     // Apply hitbox and resolve wall collisions
     o->oWallHitboxRadius = 30.0f;
     cur_obj_resolve_wall_collisions();
 
     // Delete fish if it's drifted to an area with no water.
     if (gCurrLevelNum != LEVEL_UNKNOWN_32) {
         if (o->oFishWaterLevel < FLOOR_LOWER_LIMIT_MISC) {
             obj_mark_for_deletion(o);
             return;
         }
 
     // Unreachable code, perhaps for debugging or testing.
     } else {
         o->oFishWaterLevel = 1000.0f;
     }
 
     // Call fish action methods and apply physics engine.
     cur_obj_call_action_function(sFishActions);
     cur_obj_move_using_fvel_and_gravity();
 
     // If the parent object has action set to two, then delete the fish object.
     if (o->parentObj->oAction == FISH_SPAWNER_ACT_RESPAWN) {
         obj_mark_for_deletion(o);
     }
 }