Added basic working code
parent
bd138d3db3
commit
f5f52e7e75
GPG Key ID:
C6D63995FE72FD80
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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|
|
||||||
|
[[package]]
|
||||||
|
name = "simd-adler32"
|
||||||
|
version = "0.3.7"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "smallvec"
|
||||||
|
version = "1.11.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "4dccd0940a2dcdf68d092b8cbab7dc0ad8fa938bf95787e1b916b0e3d0e8e970"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "spin"
|
||||||
|
version = "0.9.8"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
|
||||||
|
dependencies = [
|
||||||
|
"lock_api",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "tiff"
|
||||||
|
version = "0.9.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "6d172b0f4d3fba17ba89811858b9d3d97f928aece846475bbda076ca46736211"
|
||||||
|
dependencies = [
|
||||||
|
"flate2",
|
||||||
|
"jpeg-decoder",
|
||||||
|
"weezl",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "version-compare"
|
||||||
|
version = "0.1.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "579a42fc0b8e0c63b76519a339be31bed574929511fa53c1a3acae26eb258f29"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "weezl"
|
||||||
|
version = "0.1.7"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "9193164d4de03a926d909d3bc7c30543cecb35400c02114792c2cae20d5e2dbb"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "zune-inflate"
|
||||||
|
version = "0.2.54"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "73ab332fe2f6680068f3582b16a24f90ad7096d5d39b974d1c0aff0125116f02"
|
||||||
|
dependencies = [
|
||||||
|
"simd-adler32",
|
||||||
|
]
|
||||||
|
|
@ -0,0 +1,12 @@
|
||||||
|
[package]
|
||||||
|
name = "game"
|
||||||
|
version = "0.1.0"
|
||||||
|
edition = "2021"
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
image = "0.24.7"
|
||||||
|
|
||||||
|
[dependencies.sdl2]
|
||||||
|
version = "0.36"
|
||||||
|
default-features = false
|
||||||
|
#features = ["ttf"]
|
||||||
|
|
@ -0,0 +1,74 @@
|
||||||
|
use sdl2::rect::{Point, Rect};
|
||||||
|
use sdl2::render::Canvas;
|
||||||
|
use sdl2::video::Window;
|
||||||
|
|
||||||
|
use crate::physics::PhysVec;
|
||||||
|
use crate::Camera;
|
||||||
|
use crate::Drawable;
|
||||||
|
use crate::SpriteAtlas;
|
||||||
|
|
||||||
|
pub struct Doodad {
|
||||||
|
sprite: String,
|
||||||
|
pos: PhysVec,
|
||||||
|
scale: u32,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Doodad {
|
||||||
|
pub fn new(pos: PhysVec) -> Self {
|
||||||
|
Doodad {
|
||||||
|
sprite: "a0.png".to_owned(),
|
||||||
|
pos,
|
||||||
|
scale: 1,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Drawable for Doodad {
|
||||||
|
fn position(&self) -> PhysVec {
|
||||||
|
self.pos
|
||||||
|
}
|
||||||
|
|
||||||
|
fn draw(
|
||||||
|
&self,
|
||||||
|
canvas: &mut Canvas<Window>,
|
||||||
|
sa: &SpriteAtlas,
|
||||||
|
c: &Camera,
|
||||||
|
) -> Result<(), String> {
|
||||||
|
let win_size = PhysVec::from(canvas.window().size());
|
||||||
|
let draw_pos = self.screen_position(canvas, &c);
|
||||||
|
|
||||||
|
// Don't draw if off screen
|
||||||
|
if draw_pos.x < 0.0
|
||||||
|
|| draw_pos.x > win_size.x
|
||||||
|
|| draw_pos.y < 0.0
|
||||||
|
|| draw_pos.y > win_size.y
|
||||||
|
{
|
||||||
|
return Ok(());
|
||||||
|
}
|
||||||
|
|
||||||
|
let sprite = sa.get(&self.sprite);
|
||||||
|
|
||||||
|
let mut dest_rect_0 = Rect::new(0, 0, 112 / self.scale, 112 / self.scale);
|
||||||
|
dest_rect_0.center_on(Point::new(
|
||||||
|
112 / (2 * self.scale) as i32,
|
||||||
|
112 / (2 * self.scale) as i32,
|
||||||
|
));
|
||||||
|
|
||||||
|
// set the current frame for time
|
||||||
|
dest_rect_0.set_x(draw_pos.x.round() as i32);
|
||||||
|
dest_rect_0.set_y(draw_pos.y.round() as i32);
|
||||||
|
|
||||||
|
// copy the frame to the canvas
|
||||||
|
canvas.copy_ex(
|
||||||
|
&sprite.texture,
|
||||||
|
Some(sprite.rect),
|
||||||
|
Some(dest_rect_0),
|
||||||
|
0.0, // angle
|
||||||
|
Point::new(120 / (2 * self.scale) as i32, 270 / (2 * self.scale) as i32), // center
|
||||||
|
false,
|
||||||
|
false,
|
||||||
|
)?;
|
||||||
|
|
||||||
|
return Ok(());
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,48 @@
|
||||||
|
use sdl2::{event::Event, keyboard::Keycode};
|
||||||
|
|
||||||
|
// TODO: no boolean modification (no pub)
|
||||||
|
pub struct InputStatus {
|
||||||
|
pub key_left: bool,
|
||||||
|
pub key_right: bool,
|
||||||
|
pub key_thrust: bool,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl InputStatus {
|
||||||
|
pub fn new() -> Self {
|
||||||
|
InputStatus {
|
||||||
|
key_left: false,
|
||||||
|
key_right: false,
|
||||||
|
key_thrust: false,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn handle_keyup(&mut self, keycode: Keycode) {
|
||||||
|
match keycode {
|
||||||
|
Keycode::Left => self.key_left = false,
|
||||||
|
Keycode::Right => self.key_right = false,
|
||||||
|
Keycode::Up => self.key_thrust = false,
|
||||||
|
_ => {}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn handle_keydown(&mut self, keycode: Keycode) {
|
||||||
|
match keycode {
|
||||||
|
Keycode::Left => self.key_left = true,
|
||||||
|
Keycode::Right => self.key_right = true,
|
||||||
|
Keycode::Up => self.key_thrust = true,
|
||||||
|
_ => {}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn update(&mut self, event: Event) {
|
||||||
|
match event {
|
||||||
|
Event::KeyDown {
|
||||||
|
keycode: Some(key), ..
|
||||||
|
} => self.handle_keydown(key),
|
||||||
|
Event::KeyUp {
|
||||||
|
keycode: Some(key), ..
|
||||||
|
} => self.handle_keyup(key),
|
||||||
|
_ => {}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,175 @@
|
||||||
|
use sdl2::{event::Event, keyboard::Keycode, render::Canvas, video::Window};
|
||||||
|
use std::{time::Duration, time::Instant};
|
||||||
|
|
||||||
|
mod doodad;
|
||||||
|
mod inputstatus;
|
||||||
|
mod physics;
|
||||||
|
mod ship;
|
||||||
|
mod spriteatlas;
|
||||||
|
|
||||||
|
use crate::doodad::Doodad;
|
||||||
|
use crate::inputstatus::InputStatus;
|
||||||
|
use crate::physics::PhysVec;
|
||||||
|
use crate::ship::Ship;
|
||||||
|
use crate::spriteatlas::SpriteAtlas;
|
||||||
|
|
||||||
|
trait Drawable {
|
||||||
|
/// Return the world position of this object
|
||||||
|
fn position(&self) -> PhysVec;
|
||||||
|
|
||||||
|
/// Get the position of this drawable on the screen
|
||||||
|
/// (0, 0) is at top-left corner.
|
||||||
|
///
|
||||||
|
/// Returned position is this object's center.
|
||||||
|
fn screen_position(&self, canvas: &mut Canvas<Window>, c: &Camera) -> PhysVec {
|
||||||
|
let win_size = PhysVec::from(canvas.window().size());
|
||||||
|
let h = win_size / 2.0;
|
||||||
|
return self.position() - c.pos + h;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Draw this item on the screen
|
||||||
|
fn draw(&self, canvas: &mut Canvas<Window>, sa: &SpriteAtlas, c: &Camera)
|
||||||
|
-> Result<(), String>;
|
||||||
|
}
|
||||||
|
|
||||||
|
enum ShipKind {
|
||||||
|
Gypsum,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl ShipKind {
|
||||||
|
fn sprite(&self) -> &'static str {
|
||||||
|
match self {
|
||||||
|
Self::Gypsum => "gypsum.png",
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
struct Camera {
|
||||||
|
pos: PhysVec,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Camera {
|
||||||
|
fn new() -> Self {
|
||||||
|
Camera {
|
||||||
|
pos: PhysVec::zero(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static FTL: f64 = 1.0 / 140.0; // frame time limit
|
||||||
|
|
||||||
|
struct System {
|
||||||
|
decor: Vec<Box<dyn Drawable>>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl System {
|
||||||
|
fn new() -> Self {
|
||||||
|
let mut s = System { decor: Vec::new() };
|
||||||
|
|
||||||
|
s.decor.push(Box::new(Doodad::new(PhysVec::zero())));
|
||||||
|
s.decor
|
||||||
|
.push(Box::new(Doodad::new(PhysVec { x: 100.0, y: 23.0 })));
|
||||||
|
|
||||||
|
return s;
|
||||||
|
}
|
||||||
|
|
||||||
|
fn draw(
|
||||||
|
&self,
|
||||||
|
canvas: &mut Canvas<Window>,
|
||||||
|
sa: &SpriteAtlas,
|
||||||
|
c: &Camera,
|
||||||
|
) -> Result<(), String> {
|
||||||
|
for d in &self.decor {
|
||||||
|
d.draw(canvas, sa, c)?
|
||||||
|
}
|
||||||
|
|
||||||
|
return Ok(());
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn main() -> Result<(), String> {
|
||||||
|
let sdl_context = sdl2::init()?;
|
||||||
|
let video_subsystem = sdl_context.video()?;
|
||||||
|
|
||||||
|
let window = video_subsystem
|
||||||
|
.window("SDL2", 640, 480)
|
||||||
|
.position_centered()
|
||||||
|
.resizable()
|
||||||
|
.build()
|
||||||
|
.map_err(|e| e.to_string())?;
|
||||||
|
|
||||||
|
let mut canvas = window
|
||||||
|
.into_canvas()
|
||||||
|
.accelerated()
|
||||||
|
.build()
|
||||||
|
.map_err(|e| e.to_string())?;
|
||||||
|
let texture_creator = canvas.texture_creator();
|
||||||
|
|
||||||
|
let sa = SpriteAtlas::new(&texture_creator)?;
|
||||||
|
let mut event_pump = sdl_context.event_pump()?;
|
||||||
|
|
||||||
|
let system = System::new();
|
||||||
|
|
||||||
|
let mut i = InputStatus::new();
|
||||||
|
let mut c = Camera::new();
|
||||||
|
|
||||||
|
let mut s = Ship::new(ShipKind::Gypsum);
|
||||||
|
|
||||||
|
//let mut last_frame_time = 0f64;
|
||||||
|
let mut frame_start;
|
||||||
|
|
||||||
|
let mut running = true;
|
||||||
|
while running {
|
||||||
|
frame_start = Instant::now();
|
||||||
|
|
||||||
|
for event in event_pump.poll_iter() {
|
||||||
|
match event {
|
||||||
|
Event::Quit { .. }
|
||||||
|
| Event::KeyDown {
|
||||||
|
keycode: Some(Keycode::Escape),
|
||||||
|
..
|
||||||
|
} => {
|
||||||
|
running = false;
|
||||||
|
}
|
||||||
|
_ => i.update(event),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
c.pos = s.body.pos;
|
||||||
|
|
||||||
|
// Draw
|
||||||
|
canvas.clear();
|
||||||
|
system.draw(&mut canvas, &sa, &c)?;
|
||||||
|
s.draw(&mut canvas, &sa, &c)?;
|
||||||
|
canvas.present();
|
||||||
|
|
||||||
|
let frame_time = frame_start.elapsed().as_secs_f64();
|
||||||
|
|
||||||
|
// Wait
|
||||||
|
// (limit frame rate)
|
||||||
|
if frame_time < FTL {
|
||||||
|
std::thread::sleep(Duration::from_secs_f64(FTL - frame_time));
|
||||||
|
}
|
||||||
|
|
||||||
|
// Apply input
|
||||||
|
|
||||||
|
let frame_time = frame_start.elapsed().as_secs_f64();
|
||||||
|
//last_frame_time = frame_time;
|
||||||
|
|
||||||
|
s.body.tick(frame_time);
|
||||||
|
|
||||||
|
if i.key_thrust {
|
||||||
|
s.body.thrust(50.0 * frame_time);
|
||||||
|
}
|
||||||
|
|
||||||
|
if i.key_right {
|
||||||
|
s.body.rot(-1.0 * frame_time);
|
||||||
|
}
|
||||||
|
|
||||||
|
if i.key_left {
|
||||||
|
s.body.rot(1.0 * frame_time);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,75 @@
|
||||||
|
use sdl2::rect::{Point, Rect};
|
||||||
|
use sdl2::render::Canvas;
|
||||||
|
use sdl2::video::Window;
|
||||||
|
|
||||||
|
use crate::physics::PhysBody;
|
||||||
|
use crate::physics::PhysVec;
|
||||||
|
use crate::Camera;
|
||||||
|
use crate::Drawable;
|
||||||
|
use crate::ShipKind;
|
||||||
|
use crate::SpriteAtlas;
|
||||||
|
|
||||||
|
pub struct Ship {
|
||||||
|
pub body: PhysBody,
|
||||||
|
kind: ShipKind,
|
||||||
|
scale: u32,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Ship {
|
||||||
|
pub fn new(kind: ShipKind) -> Self {
|
||||||
|
Ship {
|
||||||
|
body: PhysBody::new(),
|
||||||
|
kind,
|
||||||
|
scale: 2,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Drawable for Ship {
|
||||||
|
fn position(&self) -> PhysVec {
|
||||||
|
return self.body.pos;
|
||||||
|
}
|
||||||
|
|
||||||
|
fn draw(
|
||||||
|
&self,
|
||||||
|
canvas: &mut Canvas<Window>,
|
||||||
|
sa: &SpriteAtlas,
|
||||||
|
c: &Camera,
|
||||||
|
) -> Result<(), String> {
|
||||||
|
let win_size = PhysVec::from(canvas.window().size());
|
||||||
|
let draw_pos = self.screen_position(canvas, &c);
|
||||||
|
// Don't draw if off screen
|
||||||
|
if draw_pos.x < 0.0
|
||||||
|
|| draw_pos.x > win_size.x
|
||||||
|
|| draw_pos.y < 0.0
|
||||||
|
|| draw_pos.y > win_size.y
|
||||||
|
{
|
||||||
|
return Ok(());
|
||||||
|
}
|
||||||
|
|
||||||
|
let sprite = sa.get(self.kind.sprite());
|
||||||
|
|
||||||
|
let mut dest_rect_0 = Rect::new(0, 0, 120 / self.scale, 270 / self.scale);
|
||||||
|
dest_rect_0.center_on(Point::new(
|
||||||
|
120 / (2 * self.scale) as i32,
|
||||||
|
270 / (2 * self.scale) as i32,
|
||||||
|
));
|
||||||
|
|
||||||
|
// set the current frame for time
|
||||||
|
dest_rect_0.set_x(draw_pos.x.round() as i32);
|
||||||
|
dest_rect_0.set_y(draw_pos.y.round() as i32);
|
||||||
|
|
||||||
|
// copy the frame to the canvas
|
||||||
|
canvas.copy_ex(
|
||||||
|
&sprite.texture,
|
||||||
|
Some(sprite.rect),
|
||||||
|
Some(dest_rect_0),
|
||||||
|
self.body.angle.to_degrees(), // angle
|
||||||
|
Point::new(120 / (2 * self.scale) as i32, 270 / (2 * self.scale) as i32), // center
|
||||||
|
false,
|
||||||
|
false,
|
||||||
|
)?;
|
||||||
|
|
||||||
|
return Ok(());
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,73 @@
|
||||||
|
use image::io::Reader as ImageReader;
|
||||||
|
use sdl2::{
|
||||||
|
rect::Rect,
|
||||||
|
render::{Texture, TextureCreator},
|
||||||
|
video::WindowContext,
|
||||||
|
};
|
||||||
|
|
||||||
|
use std::collections::HashMap;
|
||||||
|
|
||||||
|
/// A handle for a sprite inside a SpriteAtlas
|
||||||
|
pub struct Sprite<'a> {
|
||||||
|
pub texture: &'a Texture<'a>,
|
||||||
|
pub rect: Rect,
|
||||||
|
}
|
||||||
|
|
||||||
|
/// A cache of textures we use when drawing the screen.
|
||||||
|
///
|
||||||
|
/// This is implemented very carefully, since SDL2 textures have tricky lifetimes.
|
||||||
|
pub struct SpriteAtlas<'a> {
|
||||||
|
data: HashMap<String, (Texture<'a>, Rect)>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl<'a> SpriteAtlas<'a> {
|
||||||
|
pub fn new(texture_creator: &'a TextureCreator<WindowContext>) -> Result<Self, String> {
|
||||||
|
let mut b = Self {
|
||||||
|
data: HashMap::new(),
|
||||||
|
};
|
||||||
|
|
||||||
|
b.load_one(texture_creator, "gypsum.png")?;
|
||||||
|
b.load_one(texture_creator, "a0.png")?;
|
||||||
|
|
||||||
|
return Ok(b);
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn get(&'a self, name: &str) -> Sprite<'a> {
|
||||||
|
let (texture, rect) = self.data.get(name).unwrap();
|
||||||
|
return Sprite {
|
||||||
|
texture,
|
||||||
|
rect: rect.clone(),
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
fn load_one(
|
||||||
|
&mut self,
|
||||||
|
texture_creator: &'a TextureCreator<WindowContext>,
|
||||||
|
s: &str,
|
||||||
|
) -> Result<(), String> {
|
||||||
|
let im = ImageReader::open(format!("assets/{s}"))
|
||||||
|
.unwrap()
|
||||||
|
.decode()
|
||||||
|
.unwrap();
|
||||||
|
let width = im.width();
|
||||||
|
let height = im.height();
|
||||||
|
let mut im = im.as_bytes().to_vec();
|
||||||
|
|
||||||
|
let surface = sdl2::surface::Surface::from_data(
|
||||||
|
&mut im,
|
||||||
|
width,
|
||||||
|
height,
|
||||||
|
width * 4,
|
||||||
|
sdl2::pixels::PixelFormatEnum::RGBA32,
|
||||||
|
)?;
|
||||||
|
|
||||||
|
let texture = texture_creator
|
||||||
|
.create_texture_from_surface(&surface)
|
||||||
|
.map_err(|e| e.to_string())?;
|
||||||
|
|
||||||
|
self.data
|
||||||
|
.insert(s.to_owned(), (texture, Rect::new(0, 0, width, height)));
|
||||||
|
|
||||||
|
return Ok(());
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue