| 1 | use common::Point2D; |
| 2 | use common::Radians; |
| 3 | use sdl2::HapticSubsystem; |
| 4 | use sdl2::JoystickSubsystem; |
| 5 | use sdl2::event::Event; |
| 6 | use sdl2::haptic::Haptic; |
| 7 | use sdl2::joystick::Joystick; |
| 8 | use std::cell::RefCell; |
| 9 | use std::collections::HashMap; |
| 10 | use std::rc::Rc; |
| 11 | use time::{Duration, prelude::*}; |
| 12 | |
| 13 | #[derive(Debug, Default)] |
| 14 | pub struct Button { |
| 15 | pub time_pressed: Duration, |
| 16 | pub time_released: Duration, |
| 17 | pub is_pressed: bool, |
| 18 | pub was_pressed: bool, |
| 19 | pub toggle: bool, |
| 20 | } |
| 21 | |
| 22 | impl Button { |
| 23 | fn update(&mut self, device: &Joystick, dt: Duration, btn: u8) { |
| 24 | self.was_pressed = self.is_pressed; |
| 25 | self.is_pressed = match device.button(btn as u32) { |
| 26 | Ok(true) => { |
| 27 | if !self.was_pressed { |
| 28 | self.time_pressed = 0.seconds(); |
| 29 | self.toggle = !self.toggle; |
| 30 | } |
| 31 | self.time_pressed += dt; |
| 32 | true |
| 33 | } |
| 34 | Ok(false) => { |
| 35 | if self.was_pressed { |
| 36 | self.time_released = 0.seconds(); |
| 37 | } |
| 38 | self.time_released += dt; |
| 39 | false |
| 40 | } |
| 41 | Err(_) => { panic!("invalid button {}", btn) } |
| 42 | } |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | #[derive(Debug, Default)] |
| 47 | pub struct Axis { |
| 48 | pub val: f32, |
| 49 | } |
| 50 | |
| 51 | impl Axis { |
| 52 | #[allow(dead_code)] |
| 53 | fn update(&mut self, device: &Joystick, _dt: Duration, axis: u8) { |
| 54 | self.val = match device.axis(axis as u32) { |
| 55 | Ok(val) => val as f32 / 32768.0, |
| 56 | Err(_) => panic!("invalid axis {}", axis), |
| 57 | } |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | #[derive(Debug, Default)] |
| 62 | pub struct Stick { |
| 63 | pub x: f32, |
| 64 | pub y: f32, |
| 65 | pub a: Radians, |
| 66 | pub len: f32, |
| 67 | } |
| 68 | |
| 69 | impl Stick { |
| 70 | fn update(&mut self, device: &Joystick, _dt: Duration, x_axis: u8, y_axis: u8) { |
| 71 | self.x = match device.axis(x_axis as u32) { |
| 72 | Ok(val) => val as f32 / 32768.0, |
| 73 | Err(_) => panic!("invalid x axis {}", x_axis), |
| 74 | }; |
| 75 | self.y = match device.axis(y_axis as u32) { |
| 76 | Ok(val) => val as f32 / 32768.0, |
| 77 | Err(_) => panic!("invalid y axis {}", y_axis), |
| 78 | }; |
| 79 | self.a = Radians(self.y.atan2(self.x) as f64); |
| 80 | self.len = { |
| 81 | let x = (self.x / self.y).abs().min(1.0); |
| 82 | let y = (self.y / self.x).abs().min(1.0); |
| 83 | (self.x.powi(2) + self.y.powi(2)).sqrt() / (x.powi(2) + y.powi(2)).sqrt() |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | #[inline(always)] #[allow(dead_code)] fn up(&self) -> bool { self.y > 0.99 } |
| 88 | #[inline(always)] #[allow(dead_code)] fn down(&self) -> bool { self.y < -0.99 } |
| 89 | #[inline(always)] #[allow(dead_code)] fn left(&self) -> bool { self.x < -0.99 } |
| 90 | #[inline(always)] #[allow(dead_code)] fn right(&self) -> bool { self.x > 0.99 } |
| 91 | |
| 92 | pub fn to_point(&self) -> Point2D<f64> { |
| 93 | Point2D { |
| 94 | x: self.x as f64, |
| 95 | y: self.y as f64, |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | pub fn to_adjusted_point(&self) -> Point2D<f64> { |
| 100 | Point2D::from(self.a) * self.len as f64 |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | impl From<&Stick> for Point2D<f64> { |
| 105 | fn from(item: &Stick) -> Self { |
| 106 | Self { |
| 107 | x: item.x as f64, |
| 108 | y: item.y as f64, |
| 109 | } |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | impl From<&Stick> for (f64, f64) { |
| 114 | fn from(item: &Stick) -> Self { |
| 115 | (item.x as f64, item.y as f64) |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | //#[derive(Debug)] |
| 120 | pub struct Controller { |
| 121 | pub device: Joystick, |
| 122 | haptic: Option<Rc<RefCell<Haptic>>>, |
| 123 | |
| 124 | pub mov: Stick, |
| 125 | pub aim: Stick, |
| 126 | pub jump: Button, |
| 127 | pub start: Button, |
| 128 | pub shoot: Button, |
| 129 | } |
| 130 | |
| 131 | impl Controller { |
| 132 | pub fn new(device: Joystick, haptic: Option<Rc<RefCell<Haptic>>>) -> Self { |
| 133 | Controller { |
| 134 | device, |
| 135 | haptic, |
| 136 | mov: Default::default(), |
| 137 | aim: Default::default(), |
| 138 | jump: Default::default(), |
| 139 | start: Default::default(), |
| 140 | shoot: Default::default(), |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | pub fn update(&mut self, dt: Duration) { |
| 145 | self.mov.update(&self.device, dt, 0, 1); // left stick |
| 146 | self.aim.update(&self.device, dt, 3, 4); // right stick |
| 147 | self.jump.update(&self.device, dt, 4); // left shoulder |
| 148 | self.shoot.update(&self.device, dt, 5); // right shoulder |
| 149 | self.start.update(&self.device, dt, 9); // start |
| 150 | } |
| 151 | |
| 152 | /// strength [0 - 1] |
| 153 | pub fn rumble(&self, strength: f32, duration: Duration) { |
| 154 | if let Some(h) = &self.haptic { |
| 155 | h.borrow_mut().rumble_play(strength, duration.whole_milliseconds() as u32); |
| 156 | } |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | //#[derive(Debug)] |
| 161 | pub struct ControllerManager { |
| 162 | pub joystick: JoystickSubsystem, |
| 163 | haptic: Rc<HapticSubsystem>, |
| 164 | pub controllers: HashMap<u32, Rc<RefCell<Controller>>>, |
| 165 | } |
| 166 | |
| 167 | impl ControllerManager { |
| 168 | pub fn new(joystick: JoystickSubsystem, haptic: HapticSubsystem) -> Self { |
| 169 | joystick.set_event_state(true); |
| 170 | let mut c = ControllerManager { |
| 171 | joystick, |
| 172 | haptic: Rc::new(haptic), |
| 173 | controllers: HashMap::new(), |
| 174 | }; |
| 175 | c.init(); |
| 176 | c |
| 177 | } |
| 178 | |
| 179 | fn init(&mut self) { |
| 180 | for i in 0..self.joystick.num_joysticks().unwrap() { |
| 181 | self.add_device(i); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | pub fn update(&mut self, dt: Duration) { |
| 186 | self.controllers.iter().for_each(|(_, v)| v.borrow_mut().update(dt)); |
| 187 | } |
| 188 | |
| 189 | pub fn handle_event(&mut self, event: &Event) { |
| 190 | match event { |
| 191 | Event::JoyDeviceAdded { which, .. } => { self.add_device(*which) } |
| 192 | Event::JoyDeviceRemoved { which, .. } => { self.remove_device(*which) } |
| 193 | Event::JoyButtonDown { which, button_idx, .. } => { println!("device {} button {} down!", which, button_idx) } |
| 194 | Event::JoyButtonUp { which, button_idx, .. } => { println!("device {} button {} up!", which, button_idx) } |
| 195 | Event::JoyAxisMotion { which, axis_idx, .. } => { println!("device {} axis motion {}!", which, axis_idx) } |
| 196 | _ => {} |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | fn add_device(&mut self, id: u32) { |
| 201 | println!("device added ({})!", id); |
| 202 | let mut device = self.joystick.open(id).unwrap(); |
| 203 | println!("opened {}", device.name()); |
| 204 | |
| 205 | /* |
| 206 | note about set_rumble (for dualshock 3 at least): |
| 207 | the active range for the low frequency is from 65536/4 to 65536 and escalates in large steps throughout the range |
| 208 | the active range for the high frequency is from 256 to 65536 and effect is the same throughout the whole range |
| 209 | */ |
| 210 | let haptic = match device.set_rumble(0, 256, 100) { |
| 211 | Ok(_) => self.haptic.open_from_joystick_id(id).ok(), |
| 212 | Err(_) => None |
| 213 | }; |
| 214 | |
| 215 | if self.controllers.contains_key(&id) { |
| 216 | return; |
| 217 | } |
| 218 | |
| 219 | let detached = self.controllers.values().find(|c| !c.borrow().device.attached()); |
| 220 | match detached { |
| 221 | Some(c) => { |
| 222 | let mut c = c.borrow_mut(); |
| 223 | c.device = device; |
| 224 | c.haptic = haptic.map(|h| Rc::new(RefCell::new(h))); |
| 225 | } |
| 226 | None => { |
| 227 | let c = Rc::new(RefCell::new(Controller::new(device, haptic.map(|h| Rc::new(RefCell::new(h)))))); |
| 228 | self.controllers.insert(id, c); |
| 229 | } |
| 230 | }; |
| 231 | } |
| 232 | |
| 233 | fn remove_device(&mut self, id: i32) { |
| 234 | println!("device removed ({})!", id); |
| 235 | // TODO |
| 236 | } |
| 237 | } |