bomberman/Animation.cpp at main · AnanasikDev/bomberman · GitHub

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#include "precomp.h"
#include "tmpl8math.h"
#include "game.h"
#include "sprite.h"
#include "Animation.h"

void Animation::Init(Game* context, int begin, int length, float fps, Playback playback) noexcept {
	m_game = context;
	m_length = length;
	m_fps = fps;
	m_begin = begin;
	m_index = 0;
	m_playback = playback;
}

void Animation::Start() {
	m_index = 0;
	m_timer.reset();
}

void Animation::Start(float addtime) {
	m_timer.reset(static_cast<double>(addtime));
}

Sprite* Animation::GetCurrent() {
	return m_game->m_sheet.GetSpriteWithID(GetCurrentID());
}

int Animation::GetCurrentIDUnscoped() const {
	return m_begin + static_cast<int>(m_timer.elapsed() * static_cast<double>(m_fps));
}

int Animation::GetCurrentID() {
	switch (m_playback) {
		case Playback::Pingpong:
			m_index = pingpong(static_cast<int>(m_timer.elapsed() * m_fps), m_length);
			break;
		case Playback::Repeat:
			m_index = static_cast<int>(repeat(m_timer.elapsed() * m_fps, static_cast<float>(m_length)));
			break;
		case Playback::Clamp:
			m_index = static_cast<int>(clamp(m_timer.elapsed() * m_fps, 0.0f, static_cast<float>(m_length)));
			break;
		default:
			THROW("Unknown animation playback type\n");
	}
	return m_begin + m_index;
}

bool Animation::IsOver() const {
	ASSERT_VAR(m_fps, m_fps > 10e-2, "Animation FPS must be larger than 0.01\n");
	return m_timer.elapsed() >= (TO_FLOAT(m_length) / m_fps);
}