/*
This file is part of Minitrem.

Minitrem is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

Minitrem is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Minitrem.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "game.hpp"

namespace game {

effect_t::effect_t(state_t *game_) : game::entity_t(game_, ET_EFFECT)
{
}

void effect_t::on_think(void)
{
	if (game->now >= ttl)
		destroy();
}

fx_tracer_t::fx_tracer_t(state_t *game_, v2f_t x0_, v2f_t x1_) : effect_t(game_)
{
	ttl = game->now + 0.07;

	x0 = x0_;
	x1 = x1_;

	render_bounds[0] = x0;
	render_bounds[1] = x1;
	render_bounds = render_bounds.norm();
	cmodel.bounds = render_bounds;
	cmodel.cflags = 0;

	ignore_waking = true;
	wake();
}

void fx_tracer_t::render_to(render::state_t *render)
{
	v2f_t x0l, x1l;
	float t;

	t = 1.0f - (ttl - game->now) / 0.07f * 0.7f;

	x0l[0] = lerp(x0[0], x1[0], t);
	x0l[1] = lerp(x0[1], x1[1], t);
	x1l[0] = lerp(x0[0], x1[0], t + 0.3f);
	x1l[1] = lerp(x0[1], x1[1], t + 0.3f);

	render->render_line(x0l, x1l, sf::Color::Yellow);
}

fx_blood_t::fx_blood_t(state_t *game_, v2f_t x_, bool alien_) : effect_t(game_)
{
	ttl = game->now + 0.3f;

	x = x_;
	alien = alien_;

	render_bounds[0] = x - v2f_t(0.2, 0.2);
	render_bounds[1] = x + v2f_t(0.2, 0.2);
	cmodel.bounds = render_bounds;
	cmodel.cflags = 0;

	ignore_waking = true;
	wake();
}

void fx_blood_t::render_to(render::state_t *render)
{
	double phase;
	sf::Color color;

	phase = (game->now - ttl) / 0.3 + 1;

	if (alien)
		color = sf::Color::Green;
	else
		color = sf::Color::Red;

	render->render(phase, &assets::fx.blood, render_bounds, color);
}

fx_move_marker_t::fx_move_marker_t(state_t *game_, v2f_t x_) : effect_t(game_)
{
	x = x_;
	render_bounds[0] = x + v2f_t(-0.15, -0.4);
	render_bounds[1] = x + v2f_t(0.15, 0.2);
	cmodel.bounds = render_bounds;
	cmodel.cflags = 0;

	ignore_waking = true;
	link(&game->world);
}

fx_move_marker_t::~fx_move_marker_t(void)
{
	unlink();
	sleep();
}

void fx_move_marker_t::render_to(render::state_t *render)
{
	render->render(game->now * 2, &assets::move_marker, render_bounds, sf::Color::White);
}

} // namespace game