Make light offset of tiles variable

src/app.rs

@@ -14,7 +14,7 @@ use sfml::{
 use crate::{
     debug::{self, DebugState},
     game::{for_each_tile_on_screen, Biome, GameState},
-    graphics::{self, ScreenPos, ScreenPosScalar},
+    graphics::{self, ScreenSc, ScreenVec},
     input::Input,
     math::{center_offset, TILE_SIZE},
     res::Res,
@@ -178,8 +178,8 @@ impl App {
         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;
-        loc.y /= self.scale as ScreenPosScalar;
+        loc.x /= self.scale as ScreenSc;
+        loc.y /= self.scale as ScreenSc;
         let mut wpos = self.game.camera_offset;
         wpos.x = wpos.x.saturating_add_signed(loc.x.into());
         wpos.y = wpos.y.saturating_add_signed(loc.y.into());
@@ -289,13 +289,13 @@ impl App {
     }
 }
 
-fn viewport_center_offset(rw_size: Vector2u, rt_size: Vector2u, scale: u8) -> ScreenPos {
+fn viewport_center_offset(rw_size: Vector2u, rt_size: Vector2u, scale: u8) -> ScreenVec {
     let rw_size = rw_size;
     let rt_size = rt_size * scale as u32;
     let x = center_offset(rt_size.x as i32, rw_size.x as i32);
     let y = center_offset(rt_size.y as i32, rw_size.y as i32);
-    ScreenPos {
-        x: x as ScreenPosScalar,
-        y: y as ScreenPosScalar,
+    ScreenVec {
+        x: x as ScreenSc,
+        y: y as ScreenSc,
     }
 }

src/game.rs

@@ -9,8 +9,8 @@ use sfml::{
 };
 
 use crate::{
-    graphics::{ScreenPos, ScreenPosScalar},
-    math::{wp_to_tp, WorldPos, TILE_SIZE},
+    graphics::{ScreenSc, ScreenVec},
+    math::{wp_to_tp, WorldPos},
     res::Res,
     tiles::TileDb,
     world::{Tile, TileId, TilePos, World},
@@ -41,7 +41,7 @@ pub struct GameState {
 
 #[derive(Debug, Inspect)]
 pub struct LightSource {
-    pub pos: ScreenPos,
+    pub pos: ScreenVec,
 }
 
 #[derive(PartialEq, Eq, Clone, Copy, Debug, Inspect)]
@@ -63,11 +63,12 @@ impl GameState {
             }
             if tile.mid != Tile::EMPTY {
                 s.set_texture_rect(self.tile_db[tile.mid].atlas_offset.to_sf_rect());
-                if self.tile_db[tile.mid].emits_light {
-                    let mut pos = sp;
-                    pos.x += (TILE_SIZE / 2) as i16;
-                    pos.y += (TILE_SIZE / 2) as i16;
-                    self.light_sources.push(LightSource { pos: sp });
+                if let Some(light) = self.tile_db[tile.mid].light {
+                    let pos = ScreenVec {
+                        x: sp.x + light.x,
+                        y: sp.y + light.y,
+                    };
+                    self.light_sources.push(LightSource { pos });
                 }
                 rt.draw(&s);
             }
@@ -121,7 +122,7 @@ impl GameState {
 pub fn for_each_tile_on_screen(
     camera_offset: WorldPos,
     rt_size: Vector2u,
-    mut f: impl FnMut(TilePos, ScreenPos),
+    mut f: impl FnMut(TilePos, ScreenVec),
 ) {
     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) {
@@ -130,9 +131,9 @@ pub fn for_each_tile_on_screen(
                     x: wp_to_tp(camera_offset.x.saturating_add(x.try_into().unwrap_or(0))),
                     y: wp_to_tp(camera_offset.y.saturating_add(y.try_into().unwrap_or(0))),
                 },
-                ScreenPos {
-                    x: ((x as i64) - ((camera_offset.x as i64) % 32)) as ScreenPosScalar,
-                    y: ((y as i64) - ((camera_offset.y as i64) % 32)) as ScreenPosScalar,
+                ScreenVec {
+                    x: ((x as i64) - ((camera_offset.x as i64) % 32)) as ScreenSc,
+                    y: ((y as i64) - ((camera_offset.y as i64) % 32)) as ScreenSc,
                 },
             )
         }

src/graphics.rs

@@ -1,4 +1,5 @@
 use egui_inspect::derive::Inspect;
+use serde::{Deserialize, Serialize};
 use sfml::{
     graphics::RenderWindow,
     system::Vector2f,
@@ -23,16 +24,17 @@ impl ScreenRes {
     }
 }
 
-// We assume this game won't be played above 32767*32767 resolution
-#[derive(Default, Clone, Copy, Debug, Inspect)]
-pub struct ScreenPos {
-    pub x: ScreenPosScalar,
-    pub y: ScreenPosScalar,
+#[derive(Default, Clone, Copy, Debug, Inspect, Serialize, Deserialize)]
+pub struct ScreenVec {
+    pub x: ScreenSc,
+    pub y: ScreenSc,
 }
 
-pub type ScreenPosScalar = i16;
+/// Screen position/offset scalar
+/// We assume this game won't be played above 32767*32767 resolution
+pub type ScreenSc = i16;
 
-impl ScreenPos {
+impl ScreenVec {
     pub fn to_sf_vec(self) -> Vector2f {
         Vector2f::new(self.x.into(), self.y.into())
     }

src/input.rs

@@ -1,7 +1,7 @@
 use fnv::FnvHashSet;
 use sfml::window::{mouse, Event, Key};
 
-use crate::graphics::ScreenPos;
+use crate::graphics::ScreenVec;
 
 #[derive(Default, Debug)]
 pub struct Input {
@@ -9,7 +9,7 @@ pub struct Input {
     pressed: FnvHashSet<Key>,
     pub lmb_down: bool,
     pub rmb_down: bool,
-    pub mouse_down_loc: ScreenPos,
+    pub mouse_down_loc: ScreenVec,
     pub mid_pressed: bool,
 }
 
@@ -24,7 +24,7 @@ impl Input {
                 self.down.remove(code);
             }
             &Event::MouseButtonPressed { button, x, y } => {
-                self.mouse_down_loc = ScreenPos {
+                self.mouse_down_loc = ScreenVec {
                     x: x as i16,
                     y: y as i16,
                 };

src/tiles.rs

@@ -7,12 +7,17 @@ use log::warn;
 use serde::{Deserialize, Serialize};
 use sfml::graphics::IntRect;
 
-use crate::{math::TILE_SIZE, world::TileId};
+use crate::{
+    graphics::{ScreenSc, ScreenVec},
+    math::TILE_SIZE,
+    world::TileId,
+};
 
 #[derive(Serialize, Deserialize, Default, Debug, Inspect)]
 pub struct TileDef {
     pub solid: bool,
-    pub emits_light: bool,
+    /// Whether the tile emits light, and the light source offset
+    pub light: Option<ScreenVec>,
     pub atlas_offset: AtlasOffset,
 }
 
@@ -32,7 +37,7 @@ impl Default for TileDb {
 
 const EMPTY: TileDef = TileDef {
     solid: false,
-    emits_light: false,
+    light: None,
     // Rendering empty tile is actually special cased, and no rendering is done.
     // But just in case, put the offset to UNKNOWN
     atlas_offset: UNKNOWN_ATLAS_OFF,
@@ -72,7 +77,10 @@ const UNKNOWN_ATLAS_OFF: AtlasOffset = AtlasOffset { x: 320, y: 0 };
 
 static UNKNOWN_TILE: TileDef = TileDef {
     solid: true,
-    emits_light: true,
+    light: Some(ScreenVec {
+        x: TILE_SIZE as ScreenSc / 2,
+        y: TILE_SIZE as ScreenSc / 2,
+    }),
     atlas_offset: UNKNOWN_ATLAS_OFF,
 };
 

src/tiles/tiledb_edit_ui.rs

@@ -1,7 +1,34 @@
+use crate::{
+    graphics::{ScreenSc, ScreenVec},
+    math::TILE_SIZE,
+};
+
 use super::TileDb;
 
 pub fn tiledb_edit_ui(ctx: &egui::Context, tile_db: &mut TileDb) {
     egui::Window::new("Tiledb editor").show(ctx, |ui| {
+        ui.label(format!("Number of tile defs: {}", tile_db.db.len()));
+        ui.separator();
+        for (i, def) in tile_db.db.iter_mut().enumerate() {
+            ui.label(i.to_string());
+            match &mut def.light {
+                Some(light) => {
+                    ui.label("x");
+                    ui.add(egui::DragValue::new(&mut light.x));
+                    ui.label("y");
+                    ui.add(egui::DragValue::new(&mut light.y));
+                }
+                None => {
+                    if ui.button("Insert light emit").clicked() {
+                        def.light = Some(ScreenVec {
+                            x: TILE_SIZE as ScreenSc / 2,
+                            y: TILE_SIZE as ScreenSc / 2,
+                        });
+                    }
+                }
+            }
+        }
+        ui.separator();
         if ui.button("Add new default").clicked() {
             tile_db.db.push(super::TileDef::default());
         }