/*
 * DESCRIPTION:
 * Scale component.
*/

#include "c_scale.h"

static void add(struct CScale* self);
static void update_f(struct CScale* self);

static void
add(struct CScale* self)
{
	self->isFinished = true;
}

/* Updates an scale component. */
static void
update_f(struct CScale* self)
{
	struct CSprite* sprite;
	struct CText* text;
	f32 progress;
	f32* scale;

	sprite = ecs_get(self->id, ECS_C_SPRITE);
	text = ecs_get(self->id, ECS_C_TEXT);

	if (self->isFinished)
		return;

	if (sprite)
		scale = &sprite->scale;
	else if (text)
		scale = &text->scale;
	else
		return;

	progress = (f32)self->timer / self->timerMax;

	switch (self->type)
	{
		case C_SCALE_TO:
		case C_SCALE_TO_STICK:
			*scale = self->baseValue + (self->value * (1.0f - progress));
			break;
		case C_SCALE_FROM:
		case C_SCALE_FROM_STICK:
			*scale = self->baseValue + (self->value * progress);
			break;
		default:
			break;
	}

	self->timer--;

	if (self->timer <= 0)
	{
		switch (self->type)
		{
			case C_SCALE_TO:
			case C_SCALE_FROM:
				*scale = self->baseValue;
				break;
			case C_SCALE_TO_STICK:
			case C_SCALE_FROM_STICK:
			default:
				break;
		}

		self->isFinished = true;
	}
}

/* Sets scale component. */
void
c_scale_set(struct CScale* self, f32 baseValue, f32 value, s32 timerMax, enum CScaleType type)
{
	self->value = value;
	self->baseValue = baseValue;
	self->timerMax = timerMax;
	self->type = type;

	self->timer = self->timerMax;
	self->isFinished = false;
}

/* Registers scale component. */
void
c_scale_register(void)
{
	ecs_register
	(
		ECS_C_SCALE,
		sizeof(struct CScale),
		C_SCALE_LIMIT,
		(ECSFunction)add,
		NULL,
		(ECSFunction)update_f,
		NULL,
		NULL
	);
}