Make viewport the same size as the window

src/app.rs

@@ -15,7 +15,7 @@ use sfml::{
 use crate::{
     debug::DebugState,
     game::{for_each_tile_on_screen, Biome, GameState},
-    graphics::{self, ScreenPos, ScreenPosScalar, NATIVE_RESOLUTION},
+    graphics::{self, ScreenPos, ScreenPosScalar},
     input::Input,
     math::{center_offset, px_per_frame_to_km_h, WorldPos, M_PER_PX, TILE_SIZE},
     res::Res,
@@ -45,8 +45,9 @@ impl App {
         res.surf_music.set_looping(true);
         res.surf_music.set_volume(10.0);
         res.surf_music.play();
-        let rt = RenderTexture::new(NATIVE_RESOLUTION.w.into(), NATIVE_RESOLUTION.h.into())
-            .context("Failed to create render texture")?;
+        let rw_size = rw.size();
+        let rt =
+            RenderTexture::new(rw_size.x, rw_size.y).context("Failed to create render texture")?;
         Ok(Self {
             rw,
             should_quit: false,
@@ -77,6 +78,7 @@ impl App {
             match ev {
                 Event::Closed => self.should_quit = true,
                 Event::Resized { width, height } => {
+                    self.rt = RenderTexture::new(width, height).unwrap();
                     let view = View::from_rect(Rect::new(0., 0., width as f32, height as f32));
                     self.rw.set_view(&view);
                 }
@@ -87,6 +89,7 @@ impl App {
 
     fn do_update(&mut self) {
         self.debug.update(&self.input);
+        let rt_size = self.rt.size();
         if self.debug.freecam {
             self.do_freecam();
         } else {
@@ -115,7 +118,7 @@ impl App {
                 .vspeed
                 .clamp(-terminal_velocity, terminal_velocity);
             let mut on_screen_tile_ents = Vec::new();
-            for_each_tile_on_screen(self.game.camera_offset, |tp, _sp| {
+            for_each_tile_on_screen(self.game.camera_offset, self.rt.size(), |tp, _sp| {
                 let tid = self.game.world.tile_at_mut(tp, &self.game.worldgen).mid;
                 if tid == Tile::EMPTY {
                     return;
@@ -158,13 +161,11 @@ impl App {
                 });
             self.game.player.vspeed += self.game.gravity;
             let (x, y, _w, _h) = self.game.player.col_en.en.xywh();
-            self.game.camera_offset.x =
-                (x - NATIVE_RESOLUTION.w as i32 / 2).try_into().unwrap_or(0);
-            self.game.camera_offset.y =
-                (y - NATIVE_RESOLUTION.h as i32 / 2).try_into().unwrap_or(0);
+            self.game.camera_offset.x = (x - rt_size.x as i32 / 2).try_into().unwrap_or(0);
+            self.game.camera_offset.y = (y - rt_size.y as i32 / 2).try_into().unwrap_or(0);
         }
         let mut loc = self.input.mouse_down_loc;
-        let vco = viewport_center_offset(self.rw.size(), self.rt.size(), self.scale);
+        let vco = viewport_center_offset(self.rw.size(), rt_size, self.scale);
         loc.x -= vco.x;
         loc.y -= vco.y;
         loc.x /= self.scale as ScreenPosScalar;
@@ -241,7 +242,7 @@ impl App {
 
     fn do_rendering(&mut self) {
         self.rt.clear(Color::rgb(55, 221, 231));
-        self.game.render_pre_step(&mut self.res);
+        self.game.render_pre_step(&mut self.res, self.rt.size());
         self.game.draw_world(&mut self.rt, &mut self.res);
         self.game.draw_entities(&mut self.rt, &mut self.res);
         self.rt.display();

src/game.rs

@@ -6,12 +6,12 @@ use sfml::{
         Color, Rect, RectangleShape, RenderStates, RenderTarget, RenderTexture, Shape, Sprite,
         Transformable,
     },
-    system::Clock,
+    system::{Clock, Vector2u},
     SfBox,
 };
 
 use crate::{
-    graphics::{ScreenPos, ScreenPosScalar, NATIVE_RESOLUTION},
+    graphics::{ScreenPos, ScreenPosScalar},
     math::{wp_to_tp, WorldPos},
     res::Res,
     world::{Tile, TileId, TilePos, World},
@@ -45,7 +45,7 @@ impl GameState {
         res.lighting_shader.set_uniform_bool("has_texture", true);
         rs.set_shader(Some(&res.lighting_shader));
         let mut s = Sprite::with_texture(&res.tile_atlas);
-        for_each_tile_on_screen(self.camera_offset, |tp, sp| {
+        for_each_tile_on_screen(self.camera_offset, rw.size(), |tp, sp| {
             let tile = self.world.tile_at_mut(tp, &self.worldgen);
             s.set_position(sp.to_sf_vec());
             if tile.bg != Tile::EMPTY {
@@ -82,21 +82,16 @@ impl GameState {
         ));
         rw.draw(&rect_sh);
     }
-    pub fn render_pre_step(&mut self, res: &mut Res) {
+    pub fn render_pre_step(&mut self, res: &mut Res, rt_size: Vector2u) {
         res.lighting_shader.set_uniform_current_texture("texture");
         res.lighting_shader
             .set_uniform_float("time", self.clock.elapsed_time().as_seconds() * 10.0);
         res.lighting_shader.set_uniform_vec2(
             "mouse",
-            Vec2::new(
-                NATIVE_RESOLUTION.w as f32 / 2.0,
-                NATIVE_RESOLUTION.h as f32 / 2.0,
-            ),
-        );
-        res.lighting_shader.set_uniform_vec2(
-            "resolution",
-            Vec2::new(NATIVE_RESOLUTION.w as f32, NATIVE_RESOLUTION.h as f32),
+            Vec2::new(rt_size.x as f32 / 2.0, rt_size.y as f32 / 2.0),
         );
+        res.lighting_shader
+            .set_uniform_vec2("resolution", Vec2::new(rt_size.x as f32, rt_size.y as f32));
         res.lighting_shader.set_uniform_vec4(
             "lightData",
             Vec4 {
@@ -119,9 +114,13 @@ impl GameState {
     }
 }
 
-pub fn for_each_tile_on_screen(camera_offset: WorldPos, mut f: impl FnMut(TilePos, ScreenPos)) {
-    for y in (-32..(NATIVE_RESOLUTION.h as i16) + 32).step_by(32) {
-        for x in (-32..(NATIVE_RESOLUTION.w as i16) + 32).step_by(32) {
+pub fn for_each_tile_on_screen(
+    camera_offset: WorldPos,
+    rt_size: Vector2u,
+    mut f: impl FnMut(TilePos, ScreenPos),
+) {
+    for y in (-32..(rt_size.y as i16) + 32).step_by(32) {
+        for x in (-32..(rt_size.x as i16) + 32).step_by(32) {
             f(
                 TilePos {
                     x: wp_to_tp(camera_offset.x.saturating_add(x.try_into().unwrap_or(0))),

src/graphics.rs

@@ -37,11 +37,11 @@ impl ScreenPos {
     }
 }
 
-pub const NATIVE_RESOLUTION: ScreenRes = ScreenRes { w: 960, h: 540 };
+const DEFAULT_RES: ScreenRes = ScreenRes { w: 960, h: 540 };
 
 pub fn make_window() -> RenderWindow {
     let mut rw = RenderWindow::new(
-        NATIVE_RESOLUTION.to_sf(),
+        DEFAULT_RES.to_sf(),
         "Mantle Diver",
         Style::DEFAULT,
         &ContextSettings::default(),