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//! Polygon rooms are the standard rooms in graf karto. They can take the form of anything that a
//! [Polygon](crate::math::Polygon) can have.
use super::Mappable;
use crate::client::colours::DEFAULT_COLOURS;
use crate::client::transform::Transform;
use crate::client::FLOAT_MARGIN;
use crate::math::{self, Triangle};
use crate::world::{Component, Room};
use raylib::drawing::{RaylibDraw, RaylibDrawHandle};
use std::ops::Deref;
/// A polygon room, which can be placed and modified in the world.
pub struct RoomMark {
room: Room,
// The polygon shape, but in triangles, so the polygon does not have to be triangulated every frame.
triangulated: Vec<Triangle<f64>>,
selected: bool,
}
impl RoomMark {
/// Create a room from the given polygon data.
pub fn from_room(room: Room) -> Self {
let shape = room.shape().clone();
Self {
room,
triangulated: math::triangulate(shape, FLOAT_MARGIN),
selected: false,
}
}
/// Replace the room this mark describes with the new room.
pub fn set_room(&mut self, room: Room) {
self.room = room;
self.retriangulate();
}
/* When the internal polygon changes, it must be retriangulated to be drawn on the screen
* properly, so this function must be called any time that happens.
*/
fn retriangulate(&mut self) {
self.triangulated = math::triangulate(self.room.shape().clone(), FLOAT_MARGIN);
}
}
impl Mappable for RoomMark {
fn draw(&self, rld: &mut RaylibDrawHandle, transform: &Transform) {
for triangle in &self.triangulated {
rld.draw_triangle(
transform.point_m_to_px(&triangle.corners()[0]),
transform.point_m_to_px(&triangle.corners()[1]),
transform.point_m_to_px(&triangle.corners()[2]),
if self.selected() {
DEFAULT_COLOURS.room_selected
} else {
DEFAULT_COLOURS.room_normal
},
)
}
}
fn set_selected(&mut self, selected: bool) {
self.selected = selected;
}
fn selected(&self) -> bool {
self.selected
}
fn as_component(&self) -> &dyn Component {
self.deref()
}
}
impl Deref for RoomMark {
type Target = Room;
fn deref(&self) -> &Self::Target {
&self.room
}
}
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