veloren/common/src/comp/phys.rs

use crate::{sync::Uid, util::Dir};
use serde::{Deserialize, Serialize};
use specs::{Component, FlaggedStorage, NullStorage};
use specs_idvs::IdvStorage;
use vek::*;

// Position
#[derive(Copy, Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
pub struct Pos(pub Vec3<f32>);

impl Component for Pos {
    type Storage = IdvStorage<Self>;
}

// Velocity
#[derive(Copy, Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
pub struct Vel(pub Vec3<f32>);

impl Component for Vel {
    type Storage = IdvStorage<Self>;
}

// Orientation
#[derive(Copy, Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
pub struct Ori(pub Dir);

impl Ori {
    pub fn vec(&self) -> &Vec3<f32> { &*self.0 }
}

impl Component for Ori {
    type Storage = IdvStorage<Self>;
}

// Scale
#[derive(Copy, Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
pub struct Scale(pub f32);

impl Component for Scale {
    type Storage = FlaggedStorage<Self, IdvStorage<Self>>;
}

// Mass
#[derive(Copy, Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
pub struct Mass(pub f32);

impl Component for Mass {
    type Storage = FlaggedStorage<Self, IdvStorage<Self>>;
}

// Mass
#[derive(Copy, Clone, Debug, PartialEq, Serialize, Deserialize)]
pub enum Collider {
    Box { radius: f32, z_min: f32, z_max: f32 },
    Point,
}

impl Component for Collider {
    type Storage = FlaggedStorage<Self, IdvStorage<Self>>;
}

#[derive(Copy, Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
pub struct Gravity(pub f32);

impl Component for Gravity {
    type Storage = FlaggedStorage<Self, IdvStorage<Self>>;
}

#[derive(Copy, Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
pub struct Sticky;

impl Component for Sticky {
    type Storage = FlaggedStorage<Self, NullStorage<Self>>;
}

// PhysicsState
#[derive(Copy, Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
pub struct PhysicsState {
    pub on_ground: bool,
    pub on_ceiling: bool,
    pub on_wall: Option<Vec3<f32>>,
    pub touch_entity: Option<Uid>,
    pub in_fluid: Option<f32>, // Depth
}

impl PhysicsState {
    pub fn on_surface(&self) -> Option<Vec3<f32>> {
        self.on_ground
            .then_some(-Vec3::unit_z())
            .or_else(|| self.on_ceiling.then_some(Vec3::unit_z()))
            .or(self.on_wall)
    }
}

impl Component for PhysicsState {
    type Storage = IdvStorage<Self>;
}

// ForceUpdate
#[derive(Copy, Clone, Debug, Default, PartialEq, Serialize, Deserialize)]
pub struct ForceUpdate;

impl Component for ForceUpdate {
    type Storage = NullStorage<Self>;
}