preparing for 0.2.0 release

CHANGLOG.md

@@ -1,6 +1,7 @@
 # 0.2.0 -
 - added README.md
 - renamed tilemaps to backgrounds to make space for... tilemaps
+- tile idx 0xffff and palette idx 0xff are now transparent rather than 0x0000
 
 # 0.1.0 - 2023-07-21
 initial release

Cargo.toml

@@ -1,7 +1,7 @@
 
 [package]
 name = "gsa"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
 description = "Game development library modelled after an imaginary console"
 license = "0BSD"

src/gsa.rs

@@ -2,8 +2,8 @@ use crate::background::Background;
 use crate::rgb::Rgb;
 use crate::sprite::Sprite;
 use crate::{
-    Buttons, BACKGROUND_MAX_SIZE, DPAD_DOWN, DPAD_LEFT, DPAD_RIGHT, DPAD_UP, MAX_BACKGROUNDS,
+    Buttons, BACKGROUND_MAX_SIZE, DPAD_DOWN, DPAD_LEFT, DPAD_RIGHT, DPAD_UP, EMPTY_TILE,
-    MAX_SPRITES,
+    MAX_BACKGROUNDS, MAX_SPRITES,
 };
 use ascii::{AsciiChar, AsciiStr};
 use glam::IVec2;
@@ -16,7 +16,7 @@ pub struct Gsa {
     /// Palette used to draw graphics, initially loaded from gfx.gif
     pub palette: [Rgb; 256],
 
-    /// Tilemap layers available
+    /// Tilemap layers available, layer 0 in the back, layer 3 in front; layer 3 defaults to half-tile mode
     pub bgs: [Background; MAX_BACKGROUNDS],
 
     /// Currently selected font
@@ -30,16 +30,36 @@ pub struct Gsa {
 }
 
 impl Gsa {
-    /// Clears all tiles of given map to 0
+    /// Clears all tiles of given bg
-    pub fn clear_map(&mut self, map: usize) {
+    pub fn clear_bg(&mut self, bg: usize) {
-        self.fill_map(map, 0);
+        self.fill_bg(bg, EMPTY_TILE);
     }
 
-    /// Sets all tiles of map to val
+    /// Resets all bg
-    pub fn fill_map(&mut self, map: usize, val: u16) {
+    pub fn reset_bgs(&mut self) {
+        for bg in 0..MAX_BACKGROUNDS {
+            self.clear_bg(bg);
+            self.bgs[bg].scroll = IVec2::ZERO;
+            self.bgs[bg].half_tile = false;
+        }
+        //todo: document ui layer defaulting to half tile
+        self.bgs[3].half_tile = true;
+    }
+
+    /// Clears all sprites
+    pub fn reset_sprites(&mut self) {
+        for sprite in 0..MAX_SPRITES {
+            self.sprites[sprite].pos = IVec2::ZERO;
+            self.sprites[sprite].tile = EMPTY_TILE;
+            self.sprites[sprite].priority = 0;
+        }
+    }
+
+    /// Sets all tiles of bg to val
+    pub fn fill_bg(&mut self, bg: usize, val: u16) {
         for x in 0..BACKGROUND_MAX_SIZE {
             for y in 0..BACKGROUND_MAX_SIZE {
-                self.bgs[map].tiles[x][y] = val;
+                self.bgs[bg].tiles[x][y] = val;
             }
         }
     }

src/gsa_render_to_screen.rs

@@ -40,7 +40,7 @@ fn render_map(target: &mut [u8], map: &Background, tileset: &[u8]) {
     for x in startx..endx {
         for y in starty..endy {
             let tile = map.tiles[x as usize][y as usize];
-            if tile > EMPTY_TILE {
+            if tile != EMPTY_TILE {
                 draw_tile(
                     target,
                     IVec2 {
@@ -60,7 +60,7 @@ pub(crate) fn render_to_screen(target: &mut [u8], gsa: &Gsa, tileset: &[u8]) {
     for i in 0..MAX_BACKGROUNDS {
         render_map(target, &gsa.bgs[i], tileset);
         for sprite in &gsa.sprites {
-            if sprite.tile > 0 && sprite.priority == i as u8 {
+            if sprite.tile != EMPTY_TILE && sprite.priority == i as u8 {
                 draw_tile(target, sprite.pos, sprite.tile, tileset, false);
             }
         }

src/lib.rs

@@ -14,6 +14,15 @@
 //! - Sprites: 256 of size 16x16 (pondering allowing larger sprites)
 //! - Backgrounds: 4 of size 1024x1024, scrollable
 //!
+//! ## Getting started
+//! `cargo install gsa`
+//!
+//! `gsa new my_project`
+//!
+//! `cd my_project`
+//!
+//! `cargo run`
+//!
 //! ## Features not yet implemented
 //! - Background effects
 //!   - Rotation? Scaling?

src/main.rs

@@ -77,11 +77,12 @@ fn main() {
                 Some(local) => {
                     writeln!(
                         cargo,
-                        "{} = {{path = \"{}\"}}",
+                        "{} = {{path = \"{}\"}}\nglam = \"0.24.0\"\n\n[profile.dev.package.{}]\nopt-level = 3",
                         crate_name!(),
                         canonicalize(local)
                             .expect("couldn't find path")
-                            .to_slash_lossy()
+                            .to_slash_lossy(),
+                        crate_name!()
                     )
                     .unwrap();
                 }

src/run.rs

@@ -1,7 +1,11 @@
 use crate::buttons::{button_from_gilrs, button_from_scancode};
 use crate::gsa_render_to_screen::{render_to_screen, render_to_window};
 use crate::tileset::load_tileset;
-use crate::{Buttons, Gsa, Sprite, FONT_BOLD, MAX_SPRITES, SCREEN_HEIGHT, SCREEN_WIDTH};
+use crate::{
+    Buttons, Gsa, Sprite, FONT_BOLD, MAX_BACKGROUNDS, MAX_SPRITES, SCREEN_HEIGHT, SCREEN_WIDTH,
+    TRANSPARENT,
+};
+use clap::crate_version;
 use gilrs::EventType;
 use glam::IVec2;
 use std::cmp::min;
@@ -46,22 +50,17 @@ pub fn run<TGame: 'static>(
         released: 0,
         down: 0,
     };
-    let mut game = init_fn(&mut gsa);
-    /*let state = State::<TGame> {
-        gsa,
-        game,
-        tileset,
-        update_fn,
-        first: true,
-        gilrs: Gilrs::new().unwrap(),
-    };
 
-     */
+    gsa.reset_bgs();
+    gsa.reset_sprites();
+
+    let mut game = init_fn(&mut gsa);
 
     let event_loop = EventLoop::new();
     let size = LogicalSize::new(SCREEN_WIDTH as u32, SCREEN_HEIGHT as u32);
+    //todo: custom title
     let window = WindowBuilder::new()
-        .with_title("Game Skunk Advance v0.1")
+        .with_title(format!("Game Skunk Advance v{}", crate_version!()))
         .with_inner_size(size)
         .with_min_inner_size(size)
         .build(&event_loop)
@@ -119,8 +118,6 @@ pub fn run<TGame: 'static>(
             last_second += Duration::from_secs(1);
         }
 
-        let mut screen_buffer = [0u8; SCREEN_WIDTH * SCREEN_HEIGHT];
-
         match event {
             Event::WindowEvent {
                 event:
@@ -197,6 +194,7 @@ pub fn run<TGame: 'static>(
                     *off_x = (size.width as usize - SCREEN_WIDTH * *scale) / 2;
                     *off_y = (size.height as usize - SCREEN_HEIGHT * *scale) / 2;
 
+                    let mut screen_buffer = [TRANSPARENT; SCREEN_WIDTH * SCREEN_HEIGHT];
                     let mut window_buffer = surface.buffer_mut().unwrap();
                     render_to_screen(&mut screen_buffer, &gsa, &tileset);
                     render_to_window(