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|
use glam::{IVec2, Vec2};
use winit::{
event::{KeyEvent, MouseButton, WindowEvent},
keyboard::{KeyCode, PhysicalKey},
};
use crate::{camera::Camera, sim::cell_manager::manager::CellManager};
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub enum Input {
// movement
Up = 0,
Left,
Down,
Right,
// camera
FreeCamera,
CameraUp,
CameraLeft,
CameraDown,
CameraRight,
// sim management
Pause,
Step,
ClearGrid,
ClearEntities,
ClearParticles,
// game controls?
Grenade,
Tnt,
// placeholder actions
Action1,
Action2,
Action3,
Action4,
Action5,
Action6,
}
const INPUT_VAR_LEN: usize = 22;
const KEYMAP: [(KeyCode, Input); INPUT_VAR_LEN] = [
(KeyCode::KeyW, Input::Up),
(KeyCode::KeyA, Input::Left),
(KeyCode::KeyS, Input::Down),
(KeyCode::KeyD, Input::Right),
(KeyCode::KeyZ, Input::FreeCamera),
(KeyCode::ArrowUp, Input::CameraUp),
(KeyCode::ArrowLeft, Input::CameraLeft),
(KeyCode::ArrowDown, Input::CameraDown),
(KeyCode::ArrowRight, Input::CameraRight),
(KeyCode::KeyU, Input::Pause),
(KeyCode::KeyX, Input::Step),
(KeyCode::KeyC, Input::ClearGrid),
(KeyCode::KeyV, Input::ClearEntities),
(KeyCode::KeyP, Input::ClearParticles),
(KeyCode::KeyG, Input::Grenade),
(KeyCode::KeyT, Input::Tnt),
(KeyCode::Digit1, Input::Action1),
(KeyCode::Digit2, Input::Action2),
(KeyCode::Digit3, Input::Action3),
(KeyCode::Digit4, Input::Action4),
(KeyCode::Digit5, Input::Action5),
(KeyCode::Digit6, Input::Action6),
];
pub struct InputManager {
pub screen_mouse_pos: Vec2,
pub world_mouse_pos: Vec2,
pub chunk_mouse_pos: IVec2,
pub local_mouse_pos: IVec2,
pub lmb_pressed: bool,
pub lmb_held: bool,
pub rmb_pressed: bool,
pub rmb_held: bool,
pressed: [bool; INPUT_VAR_LEN],
held: [bool; INPUT_VAR_LEN],
}
impl InputManager {
pub fn reset_for_frame(&mut self) {
self.pressed = [false; INPUT_VAR_LEN];
self.lmb_pressed = false;
self.rmb_pressed = false;
}
pub fn apply_event(&mut self, event: &WindowEvent, camera: &Camera) {
match event {
WindowEvent::KeyboardInput {
event:
KeyEvent {
physical_key: PhysicalKey::Code(code),
repeat: false,
state,
..
},
..
} => {
if let Some(&(_, input)) = KEYMAP.iter().find(|m| m.0 == *code) {
if state.is_pressed() {
self.held[input as usize] = true;
self.pressed[input as usize] = true;
} else {
self.held[input as usize] = false;
}
}
}
WindowEvent::CursorMoved { position, .. } => {
let wp = camera
.screen_position_to_world(Vec2::new(position.x as f32, position.y as f32));
let ((cx, cy), (lx, ly)) =
CellManager::split_game_position(wp.x.round() as i32, wp.y.round() as i32);
self.screen_mouse_pos = Vec2::new(position.x as f32, position.y as f32);
self.world_mouse_pos = wp;
self.chunk_mouse_pos = IVec2::new(cx, cy);
self.local_mouse_pos = IVec2::new(lx as i32, ly as i32);
}
WindowEvent::MouseInput { state, button, .. } => {
if *button == MouseButton::Left {
if state.is_pressed() {
self.lmb_pressed = true;
self.lmb_held = true;
} else {
self.lmb_held = false;
}
} else if *button == MouseButton::Right {
if state.is_pressed() {
self.rmb_pressed = true;
self.rmb_held = true;
} else {
self.rmb_held = false;
}
}
}
_ => {}
}
}
pub fn pressed(&self, input: Input) -> bool {
if input as usize >= INPUT_VAR_LEN {
false
} else {
self.pressed[input as usize]
}
}
pub fn held(&self, input: Input) -> bool {
if input as usize >= INPUT_VAR_LEN {
false
} else {
self.held[input as usize]
}
}
pub fn new() -> Self {
InputManager {
screen_mouse_pos: Vec2::ZERO,
world_mouse_pos: Vec2::ZERO,
chunk_mouse_pos: IVec2::ZERO,
local_mouse_pos: IVec2::ZERO,
lmb_pressed: false,
lmb_held: false,
rmb_pressed: false,
rmb_held: false,
pressed: [false; INPUT_VAR_LEN],
held: [false; INPUT_VAR_LEN],
}
}
}
|
