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|
use super::Tool;
use crate::math;
use crate::transform::Transform;
use raylib::core::drawing::{RaylibDraw, RaylibDrawHandle};
use raylib::ffi::{Color, MouseButton};
use raylib::math::{Rectangle, Vector2};
use raylib::RaylibHandle;
pub struct RoomTool {
/// Vector of all Rectangles representing rooms that have already been drawn.
room_rects: Vec<Rectangle>,
/// The rectangle that is currently being drawn by the user. Once it is finished, it will be
/// pushed into the room_rects.
unfinished_rect: Option<(Vector2, Vector2)>,
}
impl RoomTool {
/// Create a new room tool where no rooms have been drawn yet.
pub fn new() -> Self {
Self {
room_rects: Vec::new(),
unfinished_rect: None,
}
}
}
impl Tool for RoomTool {
fn active_update(&mut self, rl: &RaylibHandle, transform: &Transform) {
let mouse_pos_m = transform.point_px_to_m(rl.get_mouse_position());
// Update the currently drawn rectangle, if it exists
if let Some((_, ref mut pos2)) = &mut self.unfinished_rect {
let snapped_mouse_pos = Vector2::new(
math::round(mouse_pos_m.x, 0.5),
math::round(mouse_pos_m.y, 0.5),
);
*pos2 = snapped_mouse_pos;
}
// Start or finish drawing the currently unfinished rectangle
if rl.is_mouse_button_pressed(MouseButton::MOUSE_LEFT_BUTTON) {
if let Some((pos1, pos2)) = self.unfinished_rect {
self.room_rects.push(math::bounding_rect(pos1, pos2));
self.unfinished_rect = None;
} else {
let snapped_mouse_pos = Vector2::new(
math::round(mouse_pos_m.x, 0.5),
math::round(mouse_pos_m.y, 0.5),
);
self.unfinished_rect = Some((snapped_mouse_pos, snapped_mouse_pos))
}
}
// Abort drawing the room (if any) in case the right mouse button was pressed.
if rl.is_mouse_button_pressed(MouseButton::MOUSE_RIGHT_BUTTON) {
self.unfinished_rect = None;
}
}
fn draw(&self, rld: &mut RaylibDrawHandle, transform: &Transform) {
// Draw all finished rectangles.
for &rect in &self.room_rects {
rld.draw_rectangle_rec(
transform.rect_m_to_px(rect),
Color {
r: 180,
g: 180,
b: 180,
a: 255,
},
);
}
// Do the same for the unfinished rectangle
if let Some((pos1, pos2)) = self.unfinished_rect {
rld.draw_rectangle_rec(
transform.rect_m_to_px(math::bounding_rect(pos1, pos2)),
Color {
r: 150,
g: 200,
b: 150,
a: 255,
},
);
}
}
}
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