commit 369e31c26c9374e7cf42c9de7a59ef2862441b46
from: Witcher01 <witcher01+github@posteo.net>
date: Tue Jul 20 21:41:30 2021 UTC

initial commit

commit - /dev/null
commit + 369e31c26c9374e7cf42c9de7a59ef2862441b46
blob - /dev/null
blob + ea8c4bf7f35f6f77f75d92ad8ce8349f6e81ddba (mode 644)
--- /dev/null
+++ .gitignore
@@ -0,0 +1 @@
+/target
blob - /dev/null
blob + 0d5d13fef0de4be642f68668397a1dd5f0788607 (mode 644)
--- /dev/null
+++ Cargo.lock
@@ -0,0 +1,63 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "bitflags"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+
+[[package]]
+name = "cfg-if"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.98"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320cfe77175da3a483efed4bc0adc1968ca050b098ce4f2f1c13a56626128790"
+
+[[package]]
+name = "sdl2"
+version = "0.34.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "deecbc3fa9460acff5a1e563e05cb5f31bba0aa0c214bb49a43db8159176d54b"
+dependencies = [
+ "bitflags",
+ "lazy_static",
+ "libc",
+ "sdl2-sys",
+]
+
+[[package]]
+name = "sdl2-sys"
+version = "0.34.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41a29aa21f175b5a41a6e26da572d5e5d1ee5660d35f9f9d0913e8a802098f74"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "version-compare",
+]
+
+[[package]]
+name = "version-compare"
+version = "0.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d63556a25bae6ea31b52e640d7c41d1ab27faba4ccb600013837a3d0b3994ca1"
+
+[[package]]
+name = "yac8e"
+version = "0.1.0"
+dependencies = [
+ "sdl2",
+]
blob - /dev/null
blob + e37f2505d58993aa1d6f26eb18d4a07382039575 (mode 644)
--- /dev/null
+++ Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "yac8e"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+sdl2 = "0.34"
blob - /dev/null
blob + 4b055bbd7b017259a2000c802efb1f80797b9570 (mode 644)
--- /dev/null
+++ src/chip8.rs
@@ -0,0 +1,40 @@
+#[derive(Debug)]
+/// Represents a Chip8 machine
+pub struct Chip8 {
+    /// Memory of 4096 8 bit wide locations
+    /// 0x000 - 0x1FF is usually reserved for the interpreter
+    /// 0x200 is where most Chip8 programs start
+    mem: [u8; 4096],
+    /// 16 registers, commonly named V0-VF
+    regs: [u8; 16],
+    /// 12 bit wide address register
+    i_reg: u16,
+    /// 16-bit Program Counter
+    pc: u16,
+    /// Call stack with a maximum size of 16
+    stack: [u16; 16],
+    /// Stack pointer, pointing to the topmost level of the stack
+    stack_pointer: u8,
+    /// Delay timer
+    /// The value of timer is being decremented at a rate of 60Hz
+    delay_timer: u8,
+    /// Sound timer
+    /// The value of this timer is being decremented at a rate of 60Hz
+    sound_timer: u8,
+}
+
+// should be implemented ourselves since Default is not implemented for array with sizes > 32
+impl Default for Chip8 {
+    fn default() -> Self {
+        Self {
+            mem: [0; 4096],
+            regs: [0; 16],
+            i_reg: 0,
+            pc: 0,
+            stack: [0; 16],
+            stack_pointer: 0,
+            delay_timer: 0,
+            sound_timer: 0,
+        }
+    }
+}
blob - /dev/null
blob + 75610e3ae29c81229f75bf314274646c7e7f51c3 (mode 644)
--- /dev/null
+++ src/drivers/mod.rs
@@ -0,0 +1,3 @@
+mod video_driver;
+
+pub use video_driver::VideoDriver;
blob - /dev/null
blob + 90f40acbcae29e6deb41ee3c1b092bb3dd23b87d (mode 644)
--- /dev/null
+++ src/drivers/video_driver.rs
@@ -0,0 +1,32 @@
+use sdl2::render::Canvas;
+use sdl2::video::Window;
+use sdl2::pixels::Color;
+
+/// Contains the canvas to draw to.
+pub struct VideoDriver {
+    canvas: Canvas<Window>,
+}
+
+impl VideoDriver {
+    /// Create a new canvas from a sdl2 context.
+    pub fn new(sdl_context: &sdl2::Sdl) -> Self {
+        let video_subsystem = sdl_context.video().expect("unable to initialize video subsystem");
+
+        let window = video_subsystem.window("yet another chip8 emulator", 64, 32)
+            .position_centered()
+            .build()
+            .expect("unable to initialize video subsystem");
+
+        let mut canvas = window.into_canvas().build().expect("unable to crate canvas");
+        canvas.set_draw_color(Color::RGB(0, 255, 255));
+        canvas.clear();
+        canvas.present();
+
+        Self { canvas: canvas }
+    }
+
+    /// Draw the given array to the canvas.
+    pub fn draw(&mut self, pixels: &[[u8; CHIP8_WIDTH]; CHIP8_HEIGHT]) {
+        todo!();
+    }
+}
blob - /dev/null
blob + 956667c61a5dbe4d84da9cbde5083c4c49892d78 (mode 644)
--- /dev/null
+++ src/main.rs
@@ -0,0 +1,14 @@
+extern crate sdl2;
+mod chip8;
+mod drivers;
+
+use drivers::VideoDriver;
+
+fn main() -> Result<(), String> {
+    let sdl_context = sdl2::init().expect("unable to initialize sdl2");
+    let v = VideoDriver::new(&sdl_context);
+
+    std::thread::sleep(std::time::Duration::from_secs(1));
+
+    Ok(())
+}