layer system for map edit

Cargo.toml

@@ -13,7 +13,7 @@ keywords = ["gamedev"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-glam = "0.24.0"
+glam = {version = "0.24.0", features = ["serde"]}
 ascii = "1.1.0"
 gilrs = "0.10.2"
 winit = "0.28.6"
@@ -22,7 +22,8 @@ gif = "0.12.0"
 clap = {version = "4.3.8", features = ["derive", "cargo"]}
 dunce = "1.0.4"
 path-slash = "0.2.1"
-serde = "1.0.181"
+serde = {version = "1.0.181", features = ["derive"]}
+postcard = {version = "1.0.6", features = ["alloc"]}
 
 [profile.release-dani]
 inherits = "release"

examples/basic/main.rs

@@ -8,6 +8,7 @@ fn init(gsa: &mut Gsa) -> Game {
     gsa.sprites[1].tile = 0x0200;
     gsa.bgs[0].tiles[1][1] = 0x0300;
     gsa.bgs[1].half_tile = true;
+    gsa.load_map(1337);
     gsa.write_string(1, IVec2::ONE, "Hello world nyaa~");
     Game {}
 }
@@ -15,7 +16,7 @@ fn init(gsa: &mut Gsa) -> Game {
 fn update(_game: &mut Game, gsa: &mut Gsa) {
     gsa.sprites[0].pos.x = (gsa.sprites[0].pos.x + 1) % 300;
     gsa.sprites[1].pos += gsa.input_dir();
-    gsa.bgs[1].scroll.x += 1;
+    //gsa.bgs[1].scroll.x += 1;
     if gsa.button_pressed(FACE_DOWN) {
         gsa.sprites[1].tile += 1;
     }

src/gsa.rs

@@ -1,4 +1,5 @@
 use crate::background::Background;
+use crate::maps::Maps;
 use crate::rgb::Rgb;
 use crate::sprite::Sprite;
 use crate::{
@@ -27,6 +28,7 @@ pub struct Gsa {
     pub(crate) pressed: Buttons,
     pub(crate) released: Buttons,
     pub(crate) down: Buttons,
+    pub(crate) maps: Maps,
 }
 
 impl Gsa {
@@ -64,6 +66,23 @@ impl Gsa {
         }
     }
 
+    /// Loads tilemap into backgrounds
+    pub fn load_map(&mut self, map: u16) {
+        for (i, map) in self.maps.maps[&map].iter().enumerate() {
+            self.bgs[i].size = map.size;
+            for y in 0..map.size.y as usize {
+		for x in 0..map.size.x as usize {
+                    self.bgs[i].tiles[x][y] = map.data[x + y * map.size.x as usize]
+		}
+            }
+	}
+    }
+
+    /// Does a tilemap with this id exist?
+    pub fn map_exists(&mut self, map: u16) -> bool {
+	self.maps.maps.contains_key(&map)
+    }
+
     /// Checks if any of given buttons currently held down
     pub fn button_down(&self, button: Buttons) -> bool {
         self.down & button != 0

src/gsa_render_to_screen.rs

@@ -1,8 +1,8 @@
 use std::usize;
 
 use crate::{
-    Background, Gsa, Rgb, BACKGROUND_MAX_SIZE, EMPTY_TILE, HALF_TILE_SIZE, MAX_BACKGROUNDS,
+    Background, Gsa, Rgb, EMPTY_TILE, HALF_TILE_SIZE, MAX_BACKGROUNDS, TILESET_SIZE, TILE_SIZE,
-    SCREEN_HEIGHT, SCREEN_WIDTH, TILESET_SIZE, TILE_SIZE, TRANSPARENT,
+    TRANSPARENT,
 };
 use glam::IVec2;
 use softbuffer::Buffer;

src/lib.rs

@@ -43,9 +43,11 @@ mod background;
 mod buttons;
 mod gsa;
 mod gsa_render_to_screen;
+mod maps;
 mod rgb;
 mod run;
 mod sprite;
+mod tilemap;
 mod tileset;
 
 pub use crate::background::*;

src/main.rs

@@ -3,9 +3,11 @@ mod buttons;
 mod gsa;
 mod gsa_render_to_screen;
 mod mapedit;
+mod maps;
 mod rgb;
 mod run;
 mod sprite;
+mod tilemap;
 mod tileset;
 
 //todo: figure out how to not repeat all the lib.rs stuff :(

src/mapedit.rs

@@ -4,22 +4,31 @@ use std::num::NonZeroU32;
 use crate::gsa::Gsa;
 use crate::gsa_render_to_screen::render_to_screen;
 use crate::gsa_render_to_screen::render_to_window;
+use crate::maps::Maps;
 use crate::sprite::Sprite;
+use crate::tilemap::Tilemap;
 use crate::tileset::*;
 use crate::*;
 use clap::crate_version;
 use glam::IVec2;
 use winit::{
     dpi::LogicalSize,
-    event::{Event, KeyboardInput, VirtualKeyCode, WindowEvent},
+    event::{Event, VirtualKeyCode, WindowEvent},
     event_loop::{ControlFlow, EventLoop},
     window::WindowBuilder,
 };
 
 const SPR_CURSOR: usize = 0x01;
-const TILE_CURSOR: u16 = 0x7308;
+const TILE_CURSOR: u16 = 0x7110;
-const TILE_MARKER: u16 = 0x7309;
+const TILE_MARKER: u16 = 0x7210;
-const TILE_BG: u16 = 0x730a;
+//const TILE_BG: u16 = 0x730a;
+
+const BUT_SAVE: usize = 0;
+const BUT_LAYER1: usize = 2;
+const BUT_LAYER2: usize = 3;
+const BUT_LAYER3: usize = 4;
+const BUT_LAYERS: usize = 5;
+const BUT_EXIT: usize = 7;
 
 struct Surface<'a> {
     pub data: &'a mut [u8],
@@ -40,12 +49,40 @@ impl<'a> Surface<'a> {
     }
 }
 
+enum State {
+    Edit,
+    SelectTile,
+}
+
+fn update_layer_state(gsa: &mut Gsa, gsa2: &mut Gsa, layer: usize, all: bool) {
+    gsa2.bgs[2].tiles[0][BUT_LAYER1] = if layer == 0 {0x7111} else {0x7011};
+    gsa2.bgs[2].tiles[0][BUT_LAYER2] = if layer == 1 {0x7112} else {0x7012};
+    gsa2.bgs[2].tiles[0][BUT_LAYER3] = if layer == 2 {0x7113} else {0x7013};
+    gsa2.bgs[2].tiles[0][BUT_LAYERS] = if all {0x7114} else {0x7014};
+    if all {
+	gsa.bgs[0].active = true;
+	gsa.bgs[1].active = true;
+	gsa.bgs[2].active = true;
+    } else {
+	gsa.bgs[0].active = layer == 0;
+	gsa.bgs[1].active = layer == 1;
+	gsa.bgs[2].active = layer == 2;	
+    }
+}
+
 pub(crate) fn run_mapedit() {
     println!("running map edit");
 
     let tileset_path = "examples/basic/gfx.gif";
     let (tileset, palette) = load_tileset(&fs::read(tileset_path).unwrap());
 
+    let maps_path = "examples/basic/maps.dat";
+    let maps = if Path::new(maps_path).exists() {
+        postcard::from_bytes(&fs::read(maps_path).unwrap()).unwrap()
+    } else {
+        Maps::default()
+    };
+
     let mut gsa = Gsa {
         sprites: [Sprite::default(); MAX_SPRITES],
         palette,
@@ -54,15 +91,25 @@ pub(crate) fn run_mapedit() {
         pressed: 0,
         released: 0,
         down: 0,
+        maps,
     };
 
     gsa.reset_bgs();
     gsa.reset_sprites();
+
+    if gsa.map_exists(1337) {
+	gsa.load_map(1337);
+    }
+
     for i in 0..3 {
-        gsa.bgs[i].scroll = IVec2 { x: -16, y: 0 };
+        gsa.bgs[i].scroll = IVec2 {
+            x: -16 - 32,
+            y: -32,
+        };
     }
 
     gsa.sprites[SPR_CURSOR].tile = TILE_CURSOR;
+    gsa.sprites[SPR_CURSOR].priority = 3;
     let mut gsa2 = Gsa {
         sprites: [Sprite::default(); MAX_SPRITES],
         palette,
@@ -71,11 +118,15 @@ pub(crate) fn run_mapedit() {
         pressed: 0,
         released: 0,
         down: 0,
+        maps: Maps::default(),
     };
     gsa2.reset_bgs();
     gsa2.reset_sprites();
     for i in 0..2 {
-        gsa2.bgs[i].scroll = IVec2 { x: -16, y: 0 };
+        gsa2.bgs[i].scroll = IVec2 {
+            x: -16 - 32,
+            y: -32,
+        };
     }
 
     for y in 0..TILESET_SIZE {
@@ -89,10 +140,11 @@ pub(crate) fn run_mapedit() {
     gsa2.bgs[2].size = IVec2 { x: 120, y: 68 }; //enough to cover 4k monitors? <_<
 
     for y in 0..BACKGROUND_MAX_SIZE {
-        gsa2.bgs[2].tiles[0][y] = 0x7408;
+        gsa2.bgs[2].tiles[0][y] = 0x7010;
     }
-    gsa2.bgs[2].tiles[0][0] = 0x7409;
+    gsa2.bgs[2].tiles[0][BUT_SAVE] = 0x7211;
-    gsa2.bgs[2].tiles[0][2] = 0x740a;
+    // layer buttons set up later
+    gsa2.bgs[2].tiles[0][BUT_EXIT] = 0x7212;
 
     let event_loop = EventLoop::new();
     let size = LogicalSize::new(1280, 720);
@@ -116,6 +168,10 @@ pub(crate) fn run_mapedit() {
     let mut right_down = false;
     let mut selected_tile = IVec2::ZERO;
     gsa2.bgs[1].tiles[0][0] = TILE_MARKER;
+    let mut state = State::Edit;
+    let mut current_layer = 0usize;
+    let mut all_layers = true;
+    update_layer_state(&mut gsa, &mut gsa2, current_layer, all_layers);
     event_loop.run(move |event, _, control_flow| {
         let mouse_pos = &mut mouse_pos;
         let tile_pos = &mut tile_pos;
@@ -124,6 +180,9 @@ pub(crate) fn run_mapedit() {
         let middle_down = &mut middle_down;
         let right_down = &mut right_down;
         let selected_tile = &mut selected_tile;
+        let state = &mut state;
+	let current_layer = &mut current_layer;
+	let all_layers = &mut all_layers;
 
         match event {
             Event::WindowEvent { event, .. } => match event {
@@ -143,6 +202,7 @@ pub(crate) fn run_mapedit() {
                             gsa2.bgs[1].active = true;
                             gsa.sprites[SPR_CURSOR].tile = EMPTY_TILE;
                             gsa2.sprites[SPR_CURSOR].tile = TILE_CURSOR;
+                            *state = State::SelectTile;
                         }
                         (winit::event::ElementState::Released, VirtualKeyCode::LShift) => {
                             gsa.bgs[0].active = true;
@@ -152,14 +212,47 @@ pub(crate) fn run_mapedit() {
                             gsa2.bgs[1].active = false;
                             gsa.sprites[SPR_CURSOR].tile = TILE_CURSOR;
                             gsa2.sprites[SPR_CURSOR].tile = EMPTY_TILE;
+                            *state = State::Edit;
                         }
                         _ => {}
                     }
                 }
                 WindowEvent::MouseInput { state, button, .. } => match (state, button) {
                     (winit::event::ElementState::Pressed, winit::event::MouseButton::Left) => {
+                        if mouse_pos.x < 16 {
+                            match (mouse_pos.y / 16) as usize {
+                                BUT_SAVE => {
+                                    println!("saving");
+                                    gsa.maps.maps.insert(1337, [Tilemap::from_bg(&gsa.bgs[0]), Tilemap::from_bg(&gsa.bgs[1]), Tilemap::from_bg(&gsa.bgs[2])]);
+                                    fs::write(
+                                        maps_path,
+                                        postcard::to_allocvec(&gsa.maps).unwrap(),
+                                    )
+                                    .unwrap();
+                                }
+                                BUT_LAYER1 => {
+                                    *current_layer = 0;
+                                }
+                                BUT_LAYER2 => {
+                                    *current_layer = 1;
+                                }
+                                BUT_LAYER3 => {
+                                    *current_layer = 2;
+                                }
+				BUT_LAYERS => {
+				    *all_layers = !*all_layers;
+				}
+                                BUT_EXIT => {
+                                    println!("exit");
+                                    *control_flow = ControlFlow::Exit;
+                                }
+                                _ => {}
+                            }
+			    update_layer_state(&mut gsa, &mut gsa2, *current_layer, *all_layers);
+                        } else {
                             *left_down = true;
                         }
+                    }
                     (winit::event::ElementState::Released, winit::event::MouseButton::Left) => {
                         *left_down = false;
                     }
@@ -184,17 +277,21 @@ pub(crate) fn run_mapedit() {
                     };
                     let delta = new_pos - *mouse_pos;
                     if *middle_down {
-                        if gsa.bgs[0].active {
+                        match *state {
+                            State::Edit => {
                                 // normal mode
                                 gsa.bgs[0].scroll -= delta;
                                 gsa.bgs[1].scroll -= delta;
                                 gsa.bgs[2].scroll -= delta;
-                        } else {
+                            }
+                            State::SelectTile => {
                                 // tile select mode
                                 gsa2.bgs[0].scroll -= delta;
                                 gsa2.bgs[1].scroll -= delta;
                                 //gsa2.bgs[2].scroll -= delta;
                             }
+                            _ => {}
+                        }
                     }
                     *mouse_pos = new_pos;
                     *tile_pos = IVec2 {
@@ -214,8 +311,8 @@ pub(crate) fn run_mapedit() {
             },
 
             Event::MainEventsCleared => {
-                if gsa.bgs[0].active {
+                match *state {
-                    // normal mode
+                    State::Edit => {
                         if *left_down {
                             if tile_pos.x >= 0
                                 && tile_pos.y >= 0
@@ -223,7 +320,7 @@ pub(crate) fn run_mapedit() {
                                 && tile_pos.y < BACKGROUND_MAX_SIZE as i32
                             {
                                 let tile = (selected_tile.x + (selected_tile.y << 8)) as u16;
-                            gsa.bgs[0].tiles[tile_pos.x as usize][tile_pos.y as usize] = tile;
+                                gsa.bgs[*current_layer].tiles[tile_pos.x as usize][tile_pos.y as usize] = tile;
                             }
                         } else if *right_down {
                             if tile_pos.x >= 0
@@ -231,25 +328,27 @@ pub(crate) fn run_mapedit() {
                                 && tile_pos.x < BACKGROUND_MAX_SIZE as i32
                                 && tile_pos.y < BACKGROUND_MAX_SIZE as i32
                             {
-                            gsa.bgs[0].tiles[tile_pos.x as usize][tile_pos.y as usize] = EMPTY_TILE;
+                                gsa.bgs[*current_layer].tiles[tile_pos.x as usize][tile_pos.y as usize] =
+                                    EMPTY_TILE;
                             }
                         }
-                } else {
+                    }
-                    // tile select mode
+                    State::SelectTile => {
                         if *left_down {
                             if tile_pos2.x >= 0
                                 && tile_pos2.y >= 0
                                 && tile_pos2.x < BACKGROUND_MAX_SIZE as i32
                                 && tile_pos2.y < BACKGROUND_MAX_SIZE as i32
                             {
-                            gsa2.bgs[1].tiles[selected_tile.x as usize][selected_tile.y as usize] =
+                                gsa2.bgs[1].tiles[selected_tile.x as usize]
-                                EMPTY_TILE;
+                                    [selected_tile.y as usize] = EMPTY_TILE;
                                 *selected_tile = *tile_pos2;
-                            gsa2.bgs[1].tiles[selected_tile.x as usize][selected_tile.y as usize] =
+                                gsa2.bgs[1].tiles[selected_tile.x as usize]
-                                TILE_MARKER;
+                                    [selected_tile.y as usize] = TILE_MARKER;
                             }
                         }
                     }
+                };
 
                 // render
                 let size = window.inner_size();
@@ -272,7 +371,8 @@ pub(crate) fn run_mapedit() {
                     data: &mut screen_buffer,
                     size: screen_size,
                 };
-                if gsa.bgs[0].active {
+                match *state {
+                    State::Edit => {
                         let xs = -gsa.bgs[0].scroll.x - 1;
                         let ys = -gsa.bgs[0].scroll.y - 1;
                         let xe = xs + gsa.bgs[0].size.x * TILE_SIZE as i32 + 1;
@@ -298,6 +398,8 @@ pub(crate) fn run_mapedit() {
                             screen.draw_hline(IVec2 { x: startx, y: ye }, len, 0xfc);
                         }
                     }
+                    _ => {}
+                }
 
                 render_to_window(
                     &mut window_buffer,

src/maps.rs

@@ -0,0 +1,10 @@
+use std::collections::HashMap;
+
+use serde::{Deserialize, Serialize};
+
+use crate::tilemap::Tilemap;
+
+#[derive(Default, Deserialize, Serialize)]
+pub(crate) struct Maps {
+    pub(crate) maps: HashMap<u16, [Tilemap; 3]>,
+}

src/run.rs

@@ -1,5 +1,6 @@
 use crate::buttons::{button_from_gilrs, button_from_scancode};
 use crate::gsa_render_to_screen::{render_to_screen, render_to_window};
+use crate::maps::Maps;
 use crate::tileset::load_tileset;
 use crate::{
     Buttons, Gsa, Sprite, FONT_BOLD, MAX_SPRITES, SCREEN_HEIGHT, SCREEN_WIDTH, TRANSPARENT,
@@ -27,7 +28,12 @@ use winit::window::WindowBuilder;
 macro_rules! run {
     ($init: ident, $update: ident) => {
         fn main() {
-            run($init, $update, include_bytes!("gfx.gif"));
+            run(
+                $init,
+                $update,
+                include_bytes!("gfx.gif"),
+                include_bytes!("maps.dat"),
+            );
         }
     };
 }
@@ -37,6 +43,7 @@ pub fn run<TGame: 'static>(
     init_fn: fn(gsa: &mut Gsa) -> TGame,
     update_fn: fn(game: &mut TGame, gsa: &mut Gsa),
     image_data: &[u8],
+    maps_data: &[u8],
 ) {
     let (tileset, palette) = load_tileset(image_data);
 
@@ -48,6 +55,7 @@ pub fn run<TGame: 'static>(
         pressed: 0,
         released: 0,
         down: 0,
+        maps: postcard::from_bytes(maps_data).unwrap(),
     };
 
     gsa.reset_bgs();

src/tilemap.rs

@@ -0,0 +1,26 @@
+use glam::IVec2;
+use serde::{Deserialize, Serialize};
+
+use crate::Background;
+
+#[derive(Serialize, Deserialize)]
+pub(crate) struct Tilemap {
+    pub(crate) data: Vec<u16>,
+    pub(crate) size: IVec2,
+}
+
+impl Tilemap {
+    pub(crate) fn from_bg(bg: &Background) -> Self {
+        let mut data = vec![0u16; (bg.size.x * bg.size.y) as usize];
+        for y in 0..bg.size.y as usize {
+            for x in 0..bg.size.x as usize {
+                data[x + y * bg.size.x as usize] = bg.tiles[x][y];
+            }
+        }
+
+        Self {
+            data,
+            size: bg.size,
+        }
+    }
+}