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Ball.hpp
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Ball.hpp
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#pragma once
#include <cmath>
#include <array>
#include "Timer.hpp"
#include "Unit.hpp"
struct Player;
struct Ball {
Unit unit;
Timer timer;
static constexpr int
TIME_LOOSE_BALL_BEGINS = 0,
TIME_ABLE_TO_INTERACT = 1;
const float loose_ball_cooldown = 0.1;
static constexpr Timer::time_t CANT_INTERACT_SHOT = .7;
static constexpr Timer::time_t CANT_INTERACT_SLIDE = .45;
/* Unit::vec_t speed{0, 0, 0}; */
const float default_height = Unit::GAUGE * 10;
static constexpr float GROUND_FRICTION = .05;
static constexpr float GROUND_HIT_SLOWDOWN = .02;
const float G = Unit::GAUGE * 2.3;
/* const float gravity = 2.3; */
/* const float mass = 1.0f; */
const float min_speed = Unit::GAUGE;
float vertical_speed = .0;
bool is_in_air = false;
static constexpr int NO_OWNER = -1;
int current_owner = NO_OWNER;
int last_touched = NO_OWNER;
Ball():
unit(Unit::loc_t(0, 0, 0), M_PI * 4)
{
reset_height();
}
void set_timer() {
reset_height();
timer.set_timeout(TIME_LOOSE_BALL_BEGINS, loose_ball_cooldown);
}
Unit::vec_t &position() { return unit.pos; }
/* Unit::vec_t &velocity() { return speed; } */
void reset_height() {
unit.height() = default_height;
}
void idle(double curtime) {
/* printf("ball pos: %f %f %f\n", unit.pos.x,unit.pos.y,unit.pos.z); */
/* printf("ball speed: %f %f\n", unit.moving_speed, vertical_speed); */
timer.set_time(curtime);
Timer::time_t timediff = timer.elapsed();
if(owner() == NO_OWNER || is_loose()) {
if(unit.moving_speed < min_speed) {
unit.stop();
unit.moving_speed = min_speed;
} else {
unit.move(unit.point_offset(1., unit.facing_dest));
}
if(is_in_air) {
if(vertical_speed < 0. && unit.height() <= default_height) {
// ball hits the ground
unit.moving_speed -= GROUND_HIT_SLOWDOWN;
reset_height();
if(std::abs(vertical_speed) < min_speed) {
is_in_air = false;
vertical_speed = 0.;
} else {
vertical_speed -= .3 * vertical_speed;
vertical_speed = std::abs(vertical_speed);
}
} else {
// update height
unit.height() += 8. * vertical_speed * timediff;
vertical_speed -= 8. * G * timediff;
}
} else {
unit.moving_speed -= GROUND_FRICTION * timediff;
reset_height();
}
}
unit.idle(timer);
}
void face(float angle) {
unit.facing_dest = angle;
}
void face(Unit::loc_t point) {
unit.facing_dest = atan2(point.y - unit.pos.y, point.x - unit.pos.x);
}
void timestamp_set_owner(int new_owner) {
if(current_owner == new_owner)return;
current_owner = new_owner;
if(current_owner != -1) {
timer.set_event(TIME_LOOSE_BALL_BEGINS);
last_touched = current_owner;
}
}
int owner() const {
return current_owner;
}
bool is_loose() const {
return owner() != NO_OWNER && !timer.timed_out(TIME_LOOSE_BALL_BEGINS);
}
void disable_interaction(Timer::time_t lock_for=CANT_INTERACT_SHOT) {
timer.set_event(TIME_ABLE_TO_INTERACT);
timer.set_timeout(TIME_ABLE_TO_INTERACT, lock_for);
}
bool can_interact() const {
return timer.timed_out(TIME_ABLE_TO_INTERACT);
}
};