Adding more stuff in

Cargo.toml

@@ -5,12 +5,11 @@ edition = "2024"
 host = "x86_64-unknown-linux-gnu"
 
 [dependencies]
-sdl3 = "0.17.*"
-sdl3-ttf-sys = "0.6.*"
-serde = "*"
-gtfs-structures = "0.47.*"
-zip = "8.3.*"
-csv = "1.4.*"
+sdl3 = {version = "0.17", features = ["ttf"]}
+serde = "1.0"
+gtfs-structures = "0.47"
+zip = "8.3"
+csv = "1.4"
 
 [profile.dev]
 opt-level = 0

src/gtfs/loader.rs

@@ -1,9 +1,16 @@
-use std::{collections::{HashMap, HashSet}, fs::File, hash::Hash};
 use gtfs_structures::{Calendar, CalendarDate, RawStopTime, RawTrip, Route, Stop};
 use serde::de::DeserializeOwned;
+use std::{
+    collections::{HashMap, HashSet},
+    fs::File,
+    hash::Hash,
+};
 use zip::ZipArchive;
 
-use crate::gtfs::{structs::Gtfs, utils::{route_ids_from_numbers, stop_ids_from_codes}};
+use crate::gtfs::{
+    structs::Gtfs,
+    utils::{route_ids_from_numbers, stop_ids_from_codes},
+};
 
 trait Filter<T> {
     fn accept(&self, v: &T) -> bool;
@@ -80,11 +87,11 @@ fn load_map<K, V, IndexFn, FilterT>(
     index: IndexFn,
     filter: FilterT,
 ) where
-  K: Eq + Hash,
-  V: DeserializeOwned,
-  IndexFn: Fn(&V) -> K,
-  FilterT: Filter<V>,
- {
+    K: Eq + Hash,
+    V: DeserializeOwned,
+    IndexFn: Fn(&V) -> K,
+    FilterT: Filter<V>,
+{
     let file_reader = zip_reader.by_name(table_name).unwrap();
     let mut rdr = csv::Reader::from_reader(file_reader);
 
@@ -111,10 +118,10 @@ fn load_vector_map<'a, K, V, IndexFn, FilterT>(
     index: IndexFn,
     filter: FilterT,
 ) where
-  K: Eq + Hash,
-  V: DeserializeOwned,
-  IndexFn: Fn(&V) -> K,
-  FilterT: Filter<V>,
+    K: Eq + Hash,
+    V: DeserializeOwned,
+    IndexFn: Fn(&V) -> K,
+    FilterT: Filter<V>,
 {
     let file_reader = zip_reader.by_name(table_name).unwrap();
     let mut rdr = csv::Reader::from_reader(file_reader);
@@ -128,9 +135,12 @@ fn load_vector_map<'a, K, V, IndexFn, FilterT>(
     }
 }
 
-
-pub fn load_gtfs(gtfs: &mut Gtfs, zip_reader: &mut ZipArchive<File>, route_numbers: &HashSet<String>, stop_codes: &HashSet<String>) {
-
+pub fn load_gtfs(
+    gtfs: &mut Gtfs,
+    zip_reader: &mut ZipArchive<File>,
+    route_numbers: &HashSet<String>,
+    stop_codes: &HashSet<String>,
+) {
     // Agencies
     load_vector(&mut gtfs.agencies, zip_reader, "agency.txt");
 

src/gtfs/mod.rs

@@ -2,20 +2,17 @@ mod loader;
 mod utils;
 pub mod structs;
 use std::{
-    collections::{HashMap, HashSet},
+    collections::{HashMap},
     fs::File,
 };
 use crate::gtfs::{loader::load_gtfs, structs::{Arrival, Gtfs, Preferences}};
 
-
-pub fn get_next_stops(gtfs: &Gtfs) -> Vec<Arrival> {
+pub fn _get_next_stops(_gtfs: &Gtfs) -> Vec<Arrival> {
     let arrivals = Vec::<Arrival>::new();
 
     return arrivals;
 }
 
-
-
 /// Load a GTFS structure from a zip file
 pub fn load(src_file: &str, prefs: &Preferences) -> Gtfs {
     // Open zip file

src/main.rs

@@ -1,23 +1,28 @@
 mod gtfs;
-use std::{collections::HashSet, time::Instant};
+mod renderer;
+use std::{collections::HashSet};
 
-use crate::gtfs::structs;
 
 const SRC_FILE: &str = "/home/nahuel/Downloads/GTFS_Realtime.zip";
 
 fn main() {
 
-    let gtfs_prefs = structs::Preferences  {
+    let gtfs_prefs = gtfs::structs::Preferences  {
         route_numbers: HashSet::from([String::from("15A"), String::from("F1"), String::from("F2"), String::from("F3")]),
         stop_codes: HashSet::from([String::from("1117")])
     };
 
+    let screen_prefs = renderer::structs::Prefs {
+        font_path: String::from("todo!()"),
+        screen_width: 1920,
+        screen_height: 720,
+    };
+
     // Init GTFS static info
-    for _ in 0..1000 {
-        let start_gtfs = Instant::now();
-        println!("Loading GTFS data...");
-        let gtfs = gtfs::load(SRC_FILE, &gtfs_prefs);
-        println!("Loaded records in {:#?}. Data size: {:#?}", start_gtfs.elapsed(), ::std::mem::size_of_val(&gtfs))
-    }
+    println!("Loading GTFS data...");
+    let _gtfs = gtfs::load(SRC_FILE, &gtfs_prefs);
+
+    // Init screen
+    let _screen = renderer::init(&screen_prefs);
 
 }

src/renderer/mod.rs

@@ -0,0 +1,36 @@
+
+pub mod structs;
+use sdl3::{pixels::Color};
+use structs::{Prefs, Screen};
+
+/// Initialize video, allocate buffers and load fonts
+/// Based on https://github.com/vhspace/sdl3-rs/blob/master/examples/ttf-demo.rs
+
+pub fn init(prefs: &Prefs) -> &mut structs::Screen {
+    // Initialize the screen   
+    let sdl_context = sdl3::init().unwrap();
+    let video_subsys = sdl_context.video().unwrap();
+
+    let window = video_subsys
+    .window("Dublin Bus", prefs.screen_width, prefs.screen_height)
+    .position_centered()
+    .borderless()
+    //.fullscreen()
+    .build().unwrap();
+
+    // Load font
+    let ttf_context = sdl3::ttf::init().unwrap();
+    let mut font = ttf_context.load_font(&prefs.font_path, 128.0).unwrap();
+
+    // Clear screen
+    let mut canvas = window.into_canvas();
+    canvas.set_draw_color(Color::BLACK);
+    canvas.clear();
+    canvas.present();
+
+    let screen = Screen { 
+        canvas:  &canvas, 
+        font: &font,
+    };
+    return &mut &screen;
+}

src/renderer/structs.rs

@@ -0,0 +1,13 @@
+use sdl3::{render::Canvas, ttf::Font, video::Window};
+
+
+pub struct Prefs {
+    pub font_path: String,
+    pub screen_width: u32,
+    pub screen_height: u32,
+}
+
+pub struct Screen<'a> {
+    pub canvas: &'a Canvas<Window>,
+    pub font: &'a Font<'a>,
+}