sm64pc/src/game/behaviors/fire_piranha_plant.inc.c

struct ObjectHitbox sFirePiranhaPlantHitbox = {
    /* interactType:      */ INTERACT_BOUNCE_TOP,
    /* downOffset:        */ 0,
    /* damageOrCoinValue: */ 2,
    /* health:            */ 0,
    /* numLootCoins:      */ 1,
    /* radius:            */ 80,
    /* height:            */ 160,
    /* hurtboxRadius:     */ 50,
    /* hurtboxHeight:     */ 150,
};

f32 D_80331B5C[] = {
    0.5f,
    2.0f,
};

struct ObjectHitbox sPiranhaPlantFireHitbox = {
    /* interactType:      */ INTERACT_FLAME,
    /* downOffset:        */ 10,
    /* damageOrCoinValue: */ 0,
    /* health:            */ 0,
    /* numLootCoins:      */ 0,
    /* radius:            */ 10,
    /* height:            */ 20,
    /* hurtboxRadius:     */ 10,
    /* hurtboxHeight:     */ 20,
};

s32 sNumActiveFirePiranhaPlants;
s32 sNumKilledFirePiranhaPlants;

void bhv_fire_piranha_plant_init(void) {
    o->oFirePiranhaPlantNeutralScale = D_80331B5C[(u16)(o->oBehParams >> 16)];
    set_object_hitbox(o, &sFirePiranhaPlantHitbox);

    if ((u16)(o->oBehParams >> 16) != 0) {
        o->oFlags |= 0x00004000;
        o->oHealth = 1;

        if (o->oBehParams & 0x0000FF00) {
            o->oNumLootCoins = 0;
        } else {
            o->oNumLootCoins = 2;
        }
    }

    sNumKilledFirePiranhaPlants = 0;
    sNumActiveFirePiranhaPlants = 0;
}

static void fire_piranha_plant_act_hide(void) {
    if (o->oFirePiranhaPlantDeathSpinTimer != 0) {
        o->oMoveAngleYaw += (s32) o->oFirePiranhaPlantDeathSpinVel;
        approach_f32_ptr(&o->oFirePiranhaPlantDeathSpinVel, 0.0f, 200.0f);

        if (func_8029F788()) {
            if (--o->oFirePiranhaPlantDeathSpinTimer == 0) {
                PlaySound2(SOUND_EMEMY_DEFEAT_SHRINK);
            }
        }
    } else if (approach_f32_ptr(&o->oFirePiranhaPlantScale, 0.0f,
                                0.04f * o->oFirePiranhaPlantNeutralScale)) {
        obj_become_intangible();
        if (o->oFirePiranhaPlantActive) {
            sNumActiveFirePiranhaPlants -= 1;
            o->oFirePiranhaPlantActive = FALSE;

            if ((u16)(o->oBehParams >> 16) != 0 && o->oHealth == 0) {
                if (++sNumKilledFirePiranhaPlants == 5) {
                    CreateStar(-6300.0f, -1850.0f, -6300.0f);
                }

                obj_die_if_health_non_positive();
                set_object_respawn_info_bits(o, 1);
            }
        } else if (sNumActiveFirePiranhaPlants < 2 && o->oTimer > 100 && o->oDistanceToMario > 100.0f
                   && o->oDistanceToMario < 800.0f) {
            PlaySound2(SOUND_OBJECT_PIRANHAPLANTAPPEAR);

            o->oFirePiranhaPlantActive = TRUE;
            sNumActiveFirePiranhaPlants += 1;

            obj_unhide();
            o->oAction = FIRE_PIRANHA_PLANT_ACT_GROW;
            o->oMoveAngleYaw = o->oAngleToMario;
        } else {
            obj_hide();
        }
    }

    func_8029F728();
}

static void fire_piranha_plant_act_grow(void) {
    func_802F927C(4);

    if (approach_f32_ptr(&o->oFirePiranhaPlantScale, o->oFirePiranhaPlantNeutralScale,
                         0.04f * o->oFirePiranhaPlantNeutralScale)) {
        if (o->oTimer > 80) {
            PlaySound2(SOUND_OBJECT_PIRANHAPLANTSHRINK);
            o->oAction = FIRE_PIRANHA_PLANT_ACT_HIDE;
            set_obj_animation_and_sound_state(0);
        } else if (o->oTimer < 50) {
            obj_rotate_yaw_toward(o->oAngleToMario, 0x400);
        } else { // TODO: Check if we can put these conditionals on same line
            if (obj_is_rendering_enabled()) {
                if (obj_check_anim_frame(56)) {
                    PlaySound2(SOUND_OBJECT_FLAMEBLOWN);
                    obj_spit_fire(0, (s32)(30.0f * o->oFirePiranhaPlantNeutralScale),
                                  (s32)(140.0f * o->oFirePiranhaPlantNeutralScale),
                                  2.5f * o->oFirePiranhaPlantNeutralScale, MODEL_RED_FLAME_SHADOW,
                                  20.0f, 15.0f, 0x1000);
                }
            }
        }
    } else if (o->oFirePiranhaPlantScale > o->oFirePiranhaPlantNeutralScale / 2.0f) {
        obj_become_tangible();
    }
}

void bhv_fire_piranha_plant_update(void) {
    obj_scale(o->oFirePiranhaPlantScale);

    switch (o->oAction) {
        case FIRE_PIRANHA_PLANT_ACT_HIDE:
            fire_piranha_plant_act_hide();
            break;
        case FIRE_PIRANHA_PLANT_ACT_GROW:
            fire_piranha_plant_act_grow();
            break;
    }

    if (obj_check_attacks(&sFirePiranhaPlantHitbox, o->oAction)) {
        if (--o->oHealth < 0) {
            if (o->oFirePiranhaPlantActive) {
                sNumActiveFirePiranhaPlants -= 1;
            }
        } else {
            set_obj_animation_and_sound_state(2);
        }

        o->oAction = FIRE_PIRANHA_PLANT_ACT_HIDE;
        o->oFirePiranhaPlantDeathSpinTimer = 10;
        o->oFirePiranhaPlantDeathSpinVel = 8000.0f;

        obj_become_intangible();
    }
}