Custom actor for OoT64 for animation showcase purposes

model_show.c

#include <z64ovl/oot/debug.h>
#include <z64ovl/z64ovl_helpers.h>

#define OBJ_ID         0x4
#define ACT_ID         0x1

#define PAD            0x0

#define MODEL          0x0600CDE0
#define ANIM_DAMAGE    0x060072CC
#define ANIM_KICK      0x06009264
#define ANIM_DEATH     0x0600B074
#define ANIM_RUN       0x0600BAE4
#define ANIM_DEFENSE   0x0600CB78

#define N_ANIMATIONS 5
#define ANIMATIONS {ANIM_DAMAGE, ANIM_KICK, ANIM_DEATH, ANIM_RUN, ANIM_DEFENSE}
#define ANIMATIONS_NAMES {"damage", "kick", "death", "run", "defense"}

#ifdef __IDE_VS__
// copied from z64ovl/h/mips.h
typedef uint8_t  u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef uint64_t u64;
typedef int8_t   s8;
typedef int16_t  s16;
typedef int32_t  s32;
typedef int64_t  s64;
typedef float    f32;
typedef double   f64;
#endif

typedef struct {

	z64_actor_t actor;
	z64_skelanime_t anim;
	u32 animId;

	u32 t;
	u32 lastAnimChange;

} entity_t;

static void init(entity_t* en, z64_global_t* global) {
	//actor_set_scale(&en->actor, 1);
	_z_skelanime_mtx_init(global, &en->anim, MODEL, ANIM_RUN, 0, 0, 0);
	z_skelanime_change_anim(&en->anim, ANIM_RUN, 1, 0, 0, 1);
	en->animId = 3;
	en->t = 0;
	en->lastAnimChange = 0;
}

static void update(entity_t* en, z64_global_t* global) {
	en->t++;
	actor_anime_frame_update_mtx(&en->anim);
	z64_input_t* in = &global->common.input[0];
	u32 i = en->animId;
	if (en->t - en->lastAnimChange > 5)
	{
		if (in->raw.dl)
			i--;
		if (in->raw.dr)
			i++;
	}
	if (i != en->animId)
	{
		u32 animations[] = ANIMATIONS;
		if (i < 0 || i >= N_ANIMATIONS)
			i = 0;
		z_skelanime_change_anim(&en->anim, animations[i], 1, 0, 0, 1);
		en->animId = i;
		en->lastAnimChange = en->t;
	}
}

static void dest(entity_t* en, z64_global_t* global) {

}

static void draw(entity_t* en, z64_global_t* global) {
	// seems that drawing model directly crashes the game
	// z_cheap_proc_draw_opa(global, MODEL);
	_z_skelanime_draw_mtx(global, (u32)en->anim.limb_index, (u32)en->anim.draw_table_rot, en->anim.dlist_count, 0, 0, (void*)&en->actor);
	char* names[] = ANIMATIONS_NAMES;
	zh_draw_debug_text(global, 0xFFFFFFFF, 1, 1, "anim #%d %s", en->animId, names[en->animId]);
}

z64_actor_init_t init_vars = {
	.number = ACT_ID,
	.type = 0x01,
	.room = 0x00,
	.flags = 0x00000010,
	.object = OBJ_ID,
	.padding = PAD,
	.instance_size = sizeof(entity_t),
	.init = init,
	.dest = dest,
	.main = update,
	.draw = draw
};