#include "global.h"
#include "entity.h"
#include "link.h"

typedef struct {
    u8 filler[8];
    u8 unk;
} struct_02002A40;

extern SpriteLoadData gUnk_08113910[];
extern void sub_0805E3A0(Entity*, u32);
extern void sub_0807DD50(Entity*);
extern u32 GetFacingDirection(Entity*, Entity*);
extern u32 sub_0806F5A4(u32);
extern void sub_0806F118(Entity*);
extern void sub_0807DD94(Entity*, u32);
extern u32 sub_0801E99C();
extern void sub_08078784(Entity*, u32);
extern u32 UpdateFuseInteraction(Entity*);
extern void sub_0807000C(Entity*);
extern void ShowNPCDialogue(Entity*, u16*);

extern struct_02002A40 gUnk_02002A40;
extern u16 gUnk_08113930[];

void Teachers(Entity* this) {
    switch (this->action) {
        case 0:
            if (LoadExtraSpriteData(this, &gUnk_08113910[this->entityType.form * 4])) {
                this->action = 1;
                this->spriteSettings.b.draw = TRUE;
                this->animationState = this->actionDelay;
                this->field_0x69 = 0;
                sub_0805E3A0(this, 2);
                sub_0807DD50(this);
            }
            break;
        case 1:
            if (this->interactType == 2) {
                this->action = 2;
                this->interactType = 0;
                this->field_0x69 = this->animIndex;
                InitializeAnimation(this,
                                    (this->animIndex & -4) + sub_0806F5A4(GetFacingDirection(this, &gLinkEntity)));
                sub_0806F118(this);
            } else {
                sub_0807DD94(this, 0);
            }
            break;
        case 2:
            if (UpdateFuseInteraction(this)) {
                this->action = 1;
                InitializeAnimation(this, this->field_0x69);
            }
    }
}

void sub_0806C674(Entity *this)
{
    this->field_0x68 = sub_0801E99C();
    sub_08078784(this, this->field_0x68);
}

void Teachers_Head(Entity *this)
{
  u8 bVar1;
  u8 bVar2;
  u32 uVar3;


  uVar3 = this->frames.all & -0x81;
  bVar1 = this->frameIndex;
  bVar2 = this->frameSpriteSettings & 0x3f;
  if ((this->entityType).form == 0) {
    SetExtraSpriteFrame(this,0, (uVar3 + 3));
    SetExtraSpriteFrame(this,1, bVar1);
    SetSpriteSubEntryOffsetData1(this, 1, 0);
    sub_0807000C(this);
  }
  else {
    SetExtraSpriteFrame(this, 0, (uVar3 + 6));
    SetExtraSpriteFrame(this, 1, ((bVar2) + 3));
    SetExtraSpriteFrame(this, 2, bVar1);
    SetSpriteSubEntryOffsetData1(this, 2, 1);
    SetSpriteSubEntryOffsetData2(this, 2, 0);
    sub_0807000C(this);
  }
}

void sub_0806C70C(Entity *this)
{
  int offset;
  
  offset = gUnk_02002A40.unk - 2;
  if (offset < 0) {
    offset = 0;
  }
  ShowNPCDialogue(this, gUnk_08113930 + this->entityType.form * 0x20 + offset * 4);
}

void Teachers_Fusion(Entity *this)
{  
  if (this->action == 0) {
    if (LoadExtraSpriteData(this, &gUnk_08113910[this->entityType.form * 4])) {
      this->action++;
      this->spriteSettings.b.draw = TRUE;
      InitializeAnimation(this, 2);
    }
  }
  else {
    GetNextFrame(this);
  }
}