use super::*;
pub(crate) fn plugin(app: &mut App) {
#[cfg(feature = "scripting")]
lua::plugin(app);
}
impl super::Pico8<'_, '_> {
pub fn line(&mut self, a: IVec2, b: IVec2, color: impl Into<N9Color>) -> Result<Entity, Error> {
let color = self.get_color(color)?;
let a = self.state.draw_state.apply_camera_delta_ivec2(a);
let b = self.state.draw_state.apply_camera_delta_ivec2(b);
let min = a.min(b);
let delta = b - a;
let size = UVec2::new(delta.x.unsigned_abs(), delta.y.unsigned_abs()) + UVec2::ONE;
let mut image = Image::new_fill(
Extent3d {
width: size.x,
height: size.y,
depth_or_array_layers: 1,
},
TextureDimension::D2,
&[0u8, 0u8, 0u8, 0u8],
TextureFormat::Rgba8UnormSrgb,
RenderAssetUsages::RENDER_WORLD | RenderAssetUsages::MAIN_WORLD,
);
image.sampler = ImageSampler::nearest();
let c = a - min;
let d = b - min;
for (x, y) in
bresenham::Bresenham::new((c.x as isize, c.y as isize), (d.x as isize, d.y as isize))
{
image.set_color_at(x as u32, y as u32, Color::WHITE)?;
}
let handle = self.images.add(image);
let clearable = Clearable::default();
let id = self
.commands
.spawn((
Name::new("line"),
Sprite {
image: handle,
color,
anchor: Anchor::TopLeft,
custom_size: Some(Vec2::new(size.x as f32, size.y as f32)),
..default()
},
Transform::from_xyz(min.x as f32, negate_y(min.y as f32), clearable.suggest_z()),
clearable,
))
.id();
Ok(id)
}
}
#[cfg(feature = "scripting")]
mod lua {
use super::*;
use crate::pico8::lua::with_pico8;
use bevy_mod_scripting::bindings::function::{
namespace::{GlobalNamespace, NamespaceBuilder},
script_function::FunctionCallContext,
};
pub(crate) fn plugin(app: &mut App) {
let world = app.world_mut();
NamespaceBuilder::<GlobalNamespace>::new_unregistered(world).register(
"line",
|ctx: FunctionCallContext,
x0: Option<i32>,
y0: Option<i32>,
x1: Option<i32>,
y1: Option<i32>,
c: Option<PColor>| {
let _ = with_pico8(&ctx, move |pico8| {
pico8.line(
IVec2::new(x0.unwrap_or(0), y0.unwrap_or(0)),
IVec2::new(x1.unwrap_or(0), y1.unwrap_or(0)),
c,
)
})?;
Ok(())
},
);
}
}