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|
use super::Tool;
use crate::button::Button;
use crate::config::{PolygonRoomToolKeybindings, ToolKeybindings};
use crate::dimension_indicator::DimensionIndicator;
use crate::grid::{snap_to_grid, SNAP_SIZE};
use crate::map_data::MapData;
use crate::math::{self, Polygon, Vec2};
use crate::transform::Transform;
use raylib::core::drawing::{RaylibDraw, RaylibDrawHandle};
use raylib::ffi::Color;
use raylib::RaylibHandle;
pub struct PolygonRoomTool {
keybindings: PolygonRoomToolKeybindings,
unfinished_polygon: Option<Vec<Vec2<f32>>>,
dimension_indicator: DimensionIndicator,
}
impl PolygonRoomTool {
pub fn new(keybindings: PolygonRoomToolKeybindings) -> Self {
Self {
keybindings,
unfinished_polygon: None,
dimension_indicator: DimensionIndicator::new(),
}
}
}
impl Tool for PolygonRoomTool {
fn activate(&mut self) {}
fn deactivate(&mut self) {
self.unfinished_polygon = None;
}
fn active_update(
&mut self,
map: &mut MapData,
rl: &RaylibHandle,
transform: &Transform,
mouse_blocked: bool,
) {
let mouse_pos_m = transform.point_px_to_m(rl.get_mouse_position().into());
let snapped_mouse_pos_m = snap_to_grid(mouse_pos_m, SNAP_SIZE);
// Update the position of the node that would be placed into the polygon next.
if let Some(ref mut corners) = &mut self.unfinished_polygon {
let last_element = corners.len() - 1;
corners[last_element] = snapped_mouse_pos_m;
self.dimension_indicator.update_dimensions(&corners);
}
if self.keybindings.finish.is_pressed(rl, mouse_blocked)
&& self.unfinished_polygon.is_some()
{
// Make sure the polygon is at least a triangle, so it can be drawn.
if self.unfinished_polygon.as_ref().unwrap().len() >= 3 {
let polygon = Polygon::new(self.unfinished_polygon.take().unwrap());
self.dimension_indicator.clear_dimensions();
map.polygons_mut().push(polygon);
}
}
if self.keybindings.place_node.is_pressed(rl, mouse_blocked) {
if let Some(ref mut corners) = self.unfinished_polygon.as_mut() {
if snapped_mouse_pos_m == corners[0] {
// Make sure the polygon is at least a triangle, so it can be drawn.
if corners.len() >= 3 {
// The last corner is redundant.
corners.pop();
let polygon = Polygon::new(self.unfinished_polygon.take().unwrap());
self.dimension_indicator.clear_dimensions();
map.polygons_mut().push(polygon);
}
} else {
corners.push(snapped_mouse_pos_m);
}
} else {
self.unfinished_polygon = Some(vec![snapped_mouse_pos_m, snapped_mouse_pos_m]);
}
}
if self.keybindings.abort.is_pressed(rl, false) {
self.unfinished_polygon = None;
}
}
fn draw(&self, map: &MapData, rld: &mut RaylibDrawHandle, transform: &Transform) {
// TODO: Buffer triangles so the polygons don't always have to be retriangulated.
for polygon in map.polygons() {
let triangles = math::triangulate(polygon.clone());
for triangle in triangles {
let triangle: [Vec2<f32>; 3] = triangle.into();
rld.draw_triangle(
transform.point_m_to_px(triangle[0]),
transform.point_m_to_px(triangle[1]),
transform.point_m_to_px(triangle[2]),
Color {
r: 180,
g: 180,
b: 180,
a: 255,
},
)
}
}
// Draw the current polygon
if let Some(corners) = &self.unfinished_polygon {
let mut corners = corners.clone();
corners.dedup();
match corners.len() {
0 | 1 => {}
2 => rld.draw_line_ex(
transform.point_m_to_px(corners[0]),
transform.point_m_to_px(corners[1]),
transform.length_m_to_px(0.1),
Color {
r: 150,
g: 200,
b: 150,
a: 255,
},
),
_ => {
let polygon = Polygon::new(corners);
let triangles = math::triangulate(polygon);
for triangle in triangles {
let triangle: [Vec2<f32>; 3] = triangle.into();
rld.draw_triangle(
transform.point_m_to_px(triangle[0]),
transform.point_m_to_px(triangle[1]),
transform.point_m_to_px(triangle[2]),
Color {
r: 150,
g: 200,
b: 150,
a: 255,
},
)
}
}
}
self.dimension_indicator.draw(rld, transform);
}
}
fn activation_key(&self) -> Button {
self.keybindings.activation_key()
}
}
|
