Rework graf karto to fit the client/server structure

1 files changed, 137 insertions, 0 deletions

diff --git a/src/client/mod.rs b/src/client/mod.rs
new file mode 100644
index 0000000..9151d82
--- /dev/null
+++ b/src/client/mod.rs
@@ -0,0 +1,137 @@
+pub mod cli;
+pub mod colours;
+pub mod config;
+pub mod editor;
+pub mod grid;
+pub mod gui;
+pub mod input;
+pub mod map;
+pub mod snapping;
+pub mod svg;
+pub mod tool;
+pub mod transform;
+
+use crate::net::Connection;
+use cli::CLI;
+use config::Config;
+use editor::Editor;
+use float_cmp::F64Margin;
+use gui::{DimensionIndicator, ToolSidebar};
+use input::Input;
+use raylib::prelude::*;
+use snapping::Snapper;
+use std::ffi::CString;
+use std::io;
+use std::net::{SocketAddr, TcpStream};
+use transform::Transform;
+
+/// Location of the file containing the style used for the raylib user interface.
+pub const GUI_STYLE: &str = "assets/style/cyber.rgs";
+/// Location of the graf karto configuration options file.
+pub const CONFIG_FILE: &str = "config.ron";
+
+/// The acceptable error that is used throughout the project for two floats to be considered equal.
+/// If it is set too low, the editor might not work properly, if set too high, the granularity may
+/// become too low for certain purposes.
+pub const FLOAT_MARGIN: F64Margin = F64Margin {
+    epsilon: 10000. * f64::EPSILON,
+    ulps: 0,
+};
+
+pub fn run(server_address: SocketAddr) {
+    let (mut rl, thread) = raylib::init().resizable().title("Hello there!").build();
+    rl.set_target_fps(120);
+    rl.set_exit_key(None);
+
+    // Load the configuration file, if available.
+    let config = match Config::from_file(CONFIG_FILE) {
+        Ok(config) => config,
+        Err(err) => {
+            /* Create a default config file if it doesn't exist, otherwise leave the incorrectly
+             * formatted/corrupted or otherwise unreadable file alone.
+             */
+            let config = Config::default();
+            if err.kind() == io::ErrorKind::NotFound {
+                warn!("Could not find a configuration file. Creating default.");
+                config
+                    .write_file(CONFIG_FILE)
+                    .expect("Could not write config file.");
+            } else {
+                error!(
+                    "Could not read configuration file: {}\nUsing defaults for this run.",
+                    err
+                );
+            }
+
+            config
+        }
+    };
+
+    // Load the preferred gui style
+    rl.gui_load_style(Some(
+        &CString::new(GUI_STYLE).expect("Could not create C string from style file name"),
+    ));
+
+    // Connect to the server at the given address.
+    let server = TcpStream::connect(server_address).expect("Unable to connect to the server.");
+    info!(
+        "Connection to server on `{:?}` established",
+        server.peer_addr()
+    );
+    let server = Connection::new(server);
+
+    let mut input = Input::new(&rl);
+    config::register_bindings(&config, &mut input);
+    let mut editor = Editor::new(&mut rl, &thread, config, server);
+    let mut dimension_indicator = DimensionIndicator::new();
+    let mut tool_sidebar = ToolSidebar::new(&mut rl, &thread, &mut input);
+    let mut snapper = Snapper::default();
+    let mut cli = CLI::new(&mut input);
+
+    let mut transform = Transform::new();
+    let mut last_mouse_pos = rl.get_mouse_position();
+    while !rl.window_should_close() {
+        let screen_width = rl.get_screen_width();
+        let screen_height = rl.get_screen_height();
+
+        input.update(&mut rl);
+
+        // Move the canvas together with the mouse
+        if rl.is_mouse_button_down(MouseButton::MOUSE_MIDDLE_BUTTON) {
+            transform.move_by_px(&(rl.get_mouse_position() - last_mouse_pos).into());
+        }
+        // Update the last mouse position
+        last_mouse_pos = rl.get_mouse_position();
+
+        let mouse_wheel_move = rl.get_mouse_wheel_move();
+        if mouse_wheel_move != 0. {
+            // Zoom in for positive and zoom out for negative mouse wheel rotations.
+            let scale_factor = if mouse_wheel_move > 0. { 1.2 } else { 1. / 1.2 };
+            transform.try_zoom(
+                &rl.get_mouse_position().into(),
+                mouse_wheel_move.abs() as f64 * scale_factor,
+            );
+        }
+
+        cli.update(&mut editor, &mut input);
+        dimension_indicator.update(&mut editor, &mut rl);
+        snapper.update(&mut rl, cli.active());
+        editor.update(&mut rl, &transform, &snapper, &mut input);
+        tool_sidebar.update(screen_height as u16, &mut input);
+
+        // Drawing section
+        {
+            let mut d = rl.begin_drawing(&thread);
+            d.clear_background(Color::BLACK);
+            grid::draw_grid(&mut d, screen_width, screen_height, &transform);
+            editor.map().draw(&mut d, &transform);
+
+            editor.draw_tools(&mut d, &transform);
+            tool_sidebar.draw(&mut d, &mut editor);
+            snapper.draw(&mut d);
+            gui::position_indicator_draw(&mut d, last_mouse_pos.into(), &transform, &snapper);
+            dimension_indicator.draw(&mut d, &transform);
+            cli.draw(&mut d);
+        }
+    }
+}