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/**
* @file zeldaFollower.c
* @ingroup NPCs
*
* @brief Zelda Follower NPC
*/
#include "npc/zelda.h"
#include "common.h"
#include "entity.h"
#include "asm.h"
#include "physics.h"
#include "player.h"
extern s32 sub_080041E8(s32 x1, s32 y1, s32 x2, s32 y2);
typedef union {
struct {
u16 x;
u16 y;
s16 z;
u8 framestate;
u8 animationState : 6;
u8 collisionLayer : 2;
} FIELDS;
u64 DWORD;
} ZeldaFollowerItem;
#define ZELDA_FOLLOWER_HEAP_LEN 20
#define ZELDA_FOLLOWER_HEAP ((ZeldaFollowerItem*)super->myHeap)
#define ZELDA_FOLLOWER_HEAP_END ((ZeldaFollowerItem*)super->myHeap + (ZELDA_FOLLOWER_HEAP_LEN - 1))
#define ZELDA_FOLLOWER_HEAP_SHIFT_RIGHT(this, heapPtr) \
do { \
int i; \
heapPtr = ((ZeldaFollowerItem*)this->myHeap); \
heapPtr += (ZELDA_FOLLOWER_HEAP_LEN - 2); \
for (i = 0; i < (ZELDA_FOLLOWER_HEAP_LEN - 1); i++) { \
heapPtr[1] = heapPtr[0]; \
heapPtr--; \
} \
} while (0)
void sub_08068318(ZeldaFollowerEntity*);
void sub_0806854C(ZeldaFollowerEntity*, u32*);
void sub_08068578(ZeldaFollowerEntity* this);
void ZeldaFollower(ZeldaFollowerEntity* this) {
if (super->action == 0) {
super->action++;
super->spriteSettings.draw = TRUE;
super->animationState = 4;
this->unk_68 = 0;
this->unk_69 = 0;
SetEntityPriority(super, PRIO_MESSAGE);
InitAnimationForceUpdate(super, 0);
sub_0806854C(this, NULL);
}
if ((s8)this->unk_68 != 0) {
sub_08068318(this);
} else {
super->spriteSettings.draw = FALSE;
}
}
void sub_08068318(ZeldaFollowerEntity* this) {
s32 dist;
u32 animIndex;
u32 animIndexTmp;
ZeldaFollowerItem* heapPtr;
ZeldaFollowerItem item;
item.FIELDS.x = gPlayerEntity.base.x.HALF_U.HI;
item.FIELDS.y = gPlayerEntity.base.y.HALF_U.HI;
item.FIELDS.z = gPlayerEntity.base.z.HALF_U.HI;
item.FIELDS.framestate = gPlayerState.framestate;
item.FIELDS.animationState = gPlayerEntity.base.animationState;
item.FIELDS.collisionLayer = gPlayerEntity.base.collisionLayer;
heapPtr = super->myHeap;
if ((heapPtr->FIELDS.framestate == 0xa && item.FIELDS.framestate != 0xa) ||
(heapPtr->FIELDS.framestate == 0x16 && item.FIELDS.framestate != 0x16)) {
super->x.HALF.HI = gPlayerEntity.base.x.HALF.HI;
super->y.HALF.HI = gPlayerEntity.base.y.HALF.HI;
super->spriteSettings.draw = 1;
sub_08068578(this);
}
animIndex = 0;
if (item.DWORD != heapPtr->DWORD || item.FIELDS.framestate == 0x16 || item.FIELDS.framestate == 0xa) {
ZELDA_FOLLOWER_HEAP_SHIFT_RIGHT(super, heapPtr);
heapPtr = ZELDA_FOLLOWER_HEAP;
heapPtr[0] = item;
animIndex = 0x4;
if ((s8)this->unk_69 > 0) {
this->unk_69 = this->unk_69 - 1;
}
} else {
heapPtr += ZELDA_FOLLOWER_HEAP_LEN - 1;
if (heapPtr->FIELDS.z < 0) {
ZELDA_FOLLOWER_HEAP_SHIFT_RIGHT(super, heapPtr);
animIndex = 0x4;
} else {
dist = sub_080041E8(gPlayerEntity.base.x.HALF.HI, gPlayerEntity.base.y.HALF.HI, (u16)heapPtr->FIELDS.x,
(u16)heapPtr->FIELDS.y);
dist = ((u32)dist) >> 0x4;
if (dist > 0x18) {
ZELDA_FOLLOWER_HEAP_SHIFT_RIGHT(super, heapPtr);
animIndex = 0x4;
}
}
}
heapPtr = ZELDA_FOLLOWER_HEAP;
heapPtr += ZELDA_FOLLOWER_HEAP_LEN - 1;
super->x.HALF.HI = heapPtr->FIELDS.x;
super->y.HALF.HI = heapPtr->FIELDS.y;
super->z.HALF.HI = heapPtr->FIELDS.z;
super->animationState = heapPtr->FIELDS.animationState;
super->collisionLayer = heapPtr->FIELDS.collisionLayer;
if (heapPtr->FIELDS.framestate == 0x16 || heapPtr->FIELDS.framestate == 0xa) {
super->spriteSettings.draw = 0;
}
if (((s8)this->unk_69) > 0) {
this->unk_69 = this->unk_69 - 1;
}
animIndexTmp = animIndex;
animIndex += super->animationState >> 1;
if (!(animIndex == super->animIndex || (animIndexTmp == 0 && ((s8)this->unk_69) > 0))) {
InitAnimationForceUpdate(super, animIndex);
this->unk_69 = 0x1e;
} else {
UpdateAnimationSingleFrame(super);
}
sub_0800451C(super);
if (super->z.HALF.HI < 0) {
sub_0806F854(super, 0x0, -0xc);
}
}
void sub_0806854C(ZeldaFollowerEntity* this, u32* none) {
super->myHeap = zMalloc(sizeof(ZeldaFollowerItem[ZELDA_FOLLOWER_HEAP_LEN]));
if (super->myHeap != NULL) {
this->unk_68 = 1;
RemoveInteractableObject(super);
super->hitbox = NULL;
sub_08068578(this);
}
}
void sub_08068578(ZeldaFollowerEntity* this) {
s32 dx, dy;
s32 i;
ZeldaFollowerItem *heapPtr, item;
// Copy from the player's position/state.
item.FIELDS.x = gPlayerEntity.base.x.HALF_U.HI;
item.FIELDS.y = gPlayerEntity.base.y.HALF_U.HI;
item.FIELDS.z = gPlayerEntity.base.z.HALF_U.HI;
item.FIELDS.framestate = gPlayerState.framestate;
item.FIELDS.animationState = gPlayerEntity.base.animationState;
item.FIELDS.collisionLayer = gPlayerEntity.base.collisionLayer;
// Compute the distance between zelda and the player.
dx = gPlayerEntity.base.x.HALF.HI - super->x.HALF.HI;
dy = gPlayerEntity.base.y.HALF.HI - super->y.HALF.HI;
// Divide it into ZELDA_FOLLOWER_HEAP_LEN increments.
dx = FixedDiv(dx, ZELDA_FOLLOWER_HEAP_LEN);
dy = FixedDiv(dy, ZELDA_FOLLOWER_HEAP_LEN);
heapPtr = ZELDA_FOLLOWER_HEAP;
for (i = 0; i < ZELDA_FOLLOWER_HEAP_LEN; i++) {
heapPtr->FIELDS.x = item.FIELDS.x - ((i * dx) >> 8);
heapPtr->FIELDS.y = item.FIELDS.y - ((i * dy) >> 8);
heapPtr->FIELDS.z = item.FIELDS.z;
heapPtr->FIELDS.framestate = item.FIELDS.framestate;
heapPtr->FIELDS.animationState = super->animationState;
heapPtr->FIELDS.collisionLayer = super->collisionLayer;
heapPtr++;
}
}
void ZeldaFollower_Hide(Entity* zelda, ZeldaFollowerEntity* follower) {
follower->unk_68 = 0;
follower->base.spriteSettings.draw = 0;
}
void ZeldaFollower_Show(Entity* zelda, ZeldaFollowerEntity* follower) {
follower->unk_68 = 1;
follower->base.spriteSettings.draw = 1;
follower->base.animationState = zelda->animationState;
sub_08068578(follower);
InitAnimationForceUpdate(&follower->base, follower->base.animationState / 2);
}
void sub_080686C4(Entity* zelda, ZeldaFollowerEntity* follower) {
follower->base.y.HALF.HI -= 0x10;
sub_08068578(follower);
}
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