Merge branch 'main' of ssh://musuka.dev:2222/paoda/scratch

2021-03-16/zig8/src/display.zig

@@ -37,7 +37,6 @@ pub fn draw_sprite(disp: *Display, pos: *const Point, data: *const []u8) bool {
 
             const temp = (byte >> x_bit_offset) & 0x01;
             const bit = @intCast(u1, temp);
-            // const bit = @as(u1, temp);
 
             const i = DISPLAY_WIDTH * y + x;
 

2021-03-16/zig8/src/emu.zig

@@ -14,7 +14,7 @@ pub const Cpu = struct {
     sp: u16,
     v: [16]u8,
     stack: [16]u16,
-    memory: [4096]u8,
+    memory: [0x1000]u8,
     disp: Display,
 };
 
@@ -34,7 +34,6 @@ pub fn decode(cpu: *Cpu, word: u16) ?Instruction {
     const nib3: u4 = @intCast(u4, (word & 0x00F0) >> 4);
     const nib4: u4 = @intCast(u4, (word & 0x000F) >> 0);
 
-
     if (nib1 == 0x0) {
         // nib2 is 0x0, nib3 is 0xE
 
@@ -84,20 +83,20 @@ pub fn decode(cpu: *Cpu, word: u16) ?Instruction {
 
 pub fn execute(cpu: *Cpu, instr: Instruction) void {
     switch (instr) {
-        .CLS => std.debug.print("CLS\n", .{}),
+        .CLS => std.log.debug("CLS", .{}),
         .RET => {
-            std.debug.print("RET\n", .{});
+            std.log.debug("RET", .{});
 
             cpu.pc = cpu.stack[cpu.sp];
             cpu.sp -= 1;
         },
         .JP => |addr| {
-            std.debug.print("JP 0x{X:}\n", .{ addr });
+            std.log.debug("JP 0x{X:}", .{ addr });
 
             cpu.pc = addr;
         },
         .CALL => |addr| {
-            std.debug.print("CALL 0x{X:}\n", .{ addr });
+            std.log.debug("CALL 0x{X:}", .{ addr });
 
             cpu.sp += 1;
             cpu.stack[cpu.sp] = cpu.pc;
@@ -106,7 +105,7 @@ pub fn execute(cpu: *Cpu, instr: Instruction) void {
         .SE_3 => |args| {
             const x = args.x;
             const kk = args.kk;
-            std.debug.print("SE V{}, 0x{X:}\n", .{ x, kk });
+            std.log.debug("SE V{}, 0x{X:}", .{ x, kk });
 
             if (cpu.v[x] != kk) {
                 cpu.pc += 2;
@@ -115,19 +114,19 @@ pub fn execute(cpu: *Cpu, instr: Instruction) void {
         .LD_6 => |args| {
             const x = args.x;
             const kk = args.kk;
-            std.debug.print("LD V{} 0x{X:}\n", .{ x, kk });
+            std.log.debug("LD V{} 0x{X:}", .{ x, kk });
 
             cpu.v[x] = kk;
         },
         .LD_I => |addr| {
-            std.debug.print("LD I, 0x{X:}\n", .{ addr });
+            std.log.debug("LD I, 0x{X:}", .{ addr });
             cpu.i = addr;
         },
         .DRW => |args| {
             const x = args.x;
             const y = args.y;
             const n = args.n;
-            std.debug.print("DRW V{}, V{}, 0x{X:}\n", .{ x, y, n });
+            std.log.debug("DRW V{}, V{}, 0x{X:}", .{ x, y, n });
 
             const draw_pos: Point = .{ .x = cpu.v[x], .y = cpu.v[y] };
             const sprite_data = cpu.memory[cpu.i..(cpu.i + n)];
@@ -141,7 +140,7 @@ pub fn execute(cpu: *Cpu, instr: Instruction) void {
         .ADD_7 => |args| {
             const x = args.x;
             const kk = args.kk;
-            std.debug.print("ADD V{}, 0x{X:}\n", .{ x, kk });
+            std.log.debug("ADD V{}, 0x{X:}", .{ x, kk });
 
             cpu.v[x] = cpu.v[x] + kk;
         }
@@ -158,18 +157,19 @@ fn load_rom(cpu: *Cpu, buf: []u8) void {
 }
 
 pub fn load_rom_path(cpu: *Cpu, path: []const u8) !void {
-    var alloc = std.heap.page_allocator;
+    var heap = std.heap.page_allocator;
 
     const file = try std.fs.cwd().openFile(path, .{ .read = true });
     defer file.close();
 
     const file_size = try file.getEndPos();
-    const rom_buf = try file.readToEndAlloc(alloc, file_size);
+    const rom_buf = try file.readToEndAlloc(heap, file_size);
+    defer heap.free(rom_buf);
 
     load_rom(cpu, rom_buf);
 }
 
-pub fn cycle(cpu: *Cpu) void {
+pub fn step(cpu: *Cpu) void {
     const opcode = fetch(cpu);
     const maybe_instr = decode(cpu, opcode);
 

2021-03-16/zig8/src/main.zig

@@ -1,107 +1,77 @@
 const std = @import("std");
-const cpu = @import("cpu.zig");
+const emu = @import("emu.zig");
 const Display = @import("display.zig").Display;
-const c = @cImport({
+const c = @cImport(@cInclude("SDL.h"));
-    @cInclude("SDL2/SDL.h");
-});
-const assert = @import("std").debug.assert;
 
-// See https://github.com/zig-lang/zig/issues/565
+const Cpu = emu.Cpu;
-// SDL_video.h:#define SDL_WINDOWPOS_UNDEFINED         SDL_WINDOWPOS_UNDEFINED_DISPLAY(0)
-// SDL_video.h:#define SDL_WINDOWPOS_UNDEFINED_DISPLAY(X)  (SDL_WINDOWPOS_UNDEFINED_MASK|(X))
-// SDL_video.h:#define SDL_WINDOWPOS_UNDEFINED_MASK    0x1FFF0000u
-const SDL_WINDOWPOS_UNDEFINED = @bitCast(c_int, c.SDL_WINDOWPOS_UNDEFINED_MASK);
 
-extern fn SDL_PollEvent(event: *c.SDL_Event) c_int;
+const WIDTH = 64;
+const HEIGHT = 32;
+const WINDOW_WIDTH = WIDTH * 10;
+const WINDOW_HEIGHT = HEIGHT * 10;
+const PIXELBUF_LEN = WIDTH * HEIGHT * @sizeOf(u32);
 
-// SDL_RWclose is fundamentally unrepresentable in Zig, because `ctx` is
-// evaluated twice. One could make the case that this is a bug in SDL,
-// especially since the docs list a real function prototype that would not
-// have this double-evaluation of the parameter.
-// If SDL would instead of a macro use a static inline function,
-// it would resolve the SDL bug as well as make the function visible to Zig
-// and to debuggers.
-// SDL_rwops.h:#define SDL_RWclose(ctx)        (ctx)->close(ctx)
-inline fn SDL_RWclose(ctx: [*]c.SDL_RWops) c_int {
-    return ctx[0].close.?(ctx);
-}
 
 pub fn main() !void {
-    // Initialize SDL2
+    _ = c.SDL_Init(c.SDL_INIT_VIDEO);
-    if (c.SDL_Init(c.SDL_INIT_VIDEO) != 0) {
-        c.SDL_Log("Unable to initialize SDL: %s", c.SDL_GetError());
-        return error.SDLInitializationFailed;
-    }
     defer c.SDL_Quit();
 
-    // Create Screen (Maybe introduce scaling somehow?)
+    const window = c.SDL_CreateWindow("CHIP-8", c.SDL_WINDOWPOS_CENTERED, c.SDL_WINDOWPOS_CENTERED, WINDOW_WIDTH, WINDOW_HEIGHT, c.SDL_WINDOW_OPENGL);
-    const screen = c.SDL_CreateWindow("Zig8", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 320, c.SDL_WINDOW_OPENGL) orelse
+    defer c.SDL_DestroyWindow(window);
-        {
-        c.SDL_Log("Unable to create window: %s", c.SDL_GetError());
-        return error.SDLInitializationFailed;
-    };
-    defer c.SDL_DestroyWindow(screen);
 
-    // Create Renderer
+    const renderer = c.SDL_CreateRenderer(window, -1, c.SDL_RENDERER_ACCELERATED);
-    const renderer = c.SDL_CreateRenderer(screen, -1, c.SDL_RENDERER_ACCELERATED) orelse {
-        c.SDL_Log("Unable to create renderer: %s", c.SDL_GetError());
-        return error.SDLInitializationFailed;
-    };
     defer c.SDL_DestroyRenderer(renderer);
 
-    // Create RGBA Texture
+    const texture = c.SDL_CreateTexture(renderer, c.SDL_PIXELFORMAT_RGBA8888, c.SDL_TEXTUREACCESS_STATIC, WIDTH, HEIGHT);
-    const texture = c.SDL_CreateTexture(renderer, c.SDL_PIXELFORMAT_RGBA8888, c.SDL_TEXTUREACCESS_STREAMING, 64, 32) orelse {
-        c.SDL_Log("Unable to create texture: %s", c.SDL_GetError());
-        return error.SDLInitializationFailed;
-    };
     defer c.SDL_DestroyTexture(texture);
 
-    // Initialize CHIP-8 Emulator
+    var zig8 = emu.Cpu {
-    var chip8 = cpu.Cpu {
         .i = 0x00,
-        .pc = 0x0200,
+        .pc = 0x200,
         .sp = 0x00,
-        .v = [_]u8{0x0} ** 16,
+        .v = [_]u8{0x00} ** 16,
-        .stack = [_]u16{0x0} ** 16,
+        .stack = [_]u16{0x00} ** 16,
-        .memory = [_]u8{0x0} ** 4096,
+        .memory = [_]u8{0x0000} ** 0x1000,
         .disp = Display.new(),
     };
 
-    var path = "./bin/IBM Logo.ch8";
+    try emu.load_rom_path(&zig8, "./bin/IBM Logo.ch8");
+    var pixel_buf: [PIXELBUF_LEN]u8 = [_]u8 {0x00} ** PIXELBUF_LEN;
 
-    // Load Game ROM into CHIP-8 Emulator
+    emuloop: while(true) {
-    try cpu.load_rom_path(&chip8, path);
+        _ = c.SDL_UpdateTexture(texture, null, @ptrCast(*const c_void, &pixel_buf), WIDTH * @sizeOf(u32));
-
+        _ = c.SDL_RenderCopy(renderer, texture, null, null);
-
+        _ = c.SDL_RenderPresent(renderer);
-    // Create Pixel Buffer (Temporary)
-    const buf_size = 64 * 32 * @sizeOf(u32);
-    var pixels: [buf_size]u8 = [_]u8{255} ** buf_size;
-
-    // Render
-    var quit = false;
-    while (!quit) {
-
-        var buf_ptr: [*c]?*c_void = &@ptrCast(?*c_void, &pixels[0]);
-
-        _ = c.SDL_LockTexture(texture, null, buf_ptr, 64 * @sizeOf(u32));
-        c.SDL_UnlockTexture(texture);
 
         var event: c.SDL_Event = undefined;
-        while (SDL_PollEvent(&event) != 0) {
+        while(c.SDL_PollEvent(&event) != 0) {
-            switch (event.@"type") {
+            switch(event.type) {
-                c.SDL_QUIT => {
+                c.SDL_QUIT => break :emuloop,
-                    quit = true;
+                else => {}
-                },
-                else => {},
             }
         }
 
-        _ = c.SDL_RenderClear(renderer);
+        emu.step(&zig8);
-        _ = c.SDL_RenderCopy(renderer, texture, null, null);
+        draw(&zig8.disp, &pixel_buf);  
-        c.SDL_RenderPresent(renderer);
+    }
-
+}
-        cpu.cycle(&chip8);
+
-
+fn draw(display: *const Display, pixel_buf: *[8192]u8) void {
-        c.SDL_Delay(17);
+    var emu_i: usize = 0;
+
+    while (emu_i < display.buf.len) : (emu_i += 1) {
+        var pixel_i = emu_i * 4;
+
+        if (display.buf[emu_i] == 0x01) {
+            pixel_buf[pixel_i] = 0xFF;
+            pixel_buf[pixel_i + 1] = 0xFF;
+            pixel_buf[pixel_i + 2] = 0xFF;
+            pixel_buf[pixel_i + 3] = 0xFF;
+        } else {
+            pixel_buf[pixel_i] = 0xFF;
+            pixel_buf[pixel_i + 1] = 0x00;
+            pixel_buf[pixel_i + 2] = 0x00;
+            pixel_buf[pixel_i + 3] = 0x00;
+        }
     }
 }

2021-04-19/max.py

@@ -0,0 +1,10 @@
+
+dict = {}
+
+
+for line in open("words.txt"):
+    word = line.strip()
+    final_letter = word[-1]
+    dict[final_letter] = word
+
+print(dict)

2021-05-05/gamepad-test/Cargo.lock

@@ -0,0 +1,421 @@
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2021-05-05/gamepad-test/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "gamepad-test"
+version = "0.1.0"
+authors = ["Rekai Musuka <rekai@musuka.dev>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+gilrs = "*"

2021-05-05/gamepad-test/src/main.rs

@@ -0,0 +1,21 @@
+use gilrs::{Button, Event, Gilrs};
+
+fn main() {
+    let mut gilrs = Gilrs::new().unwrap();
+
+    // Iterate over all connected gamepads
+    for (_id, gamepad) in gilrs.gamepads() {
+        println!("{} is {:?}", gamepad.name(), gamepad.power_info());
+    }
+
+    let mut active_gamepad = None;
+
+    loop {
+        if active_gamepad.is_none() {
+            active_gamepad = gilrs.next_event().map(|e| e.id);
+        }
+
+        let maybe_gamepad = active_gamepad.map(|id| gilrs.gamepad(id));
+        maybe_gamepad.map(|gamepad| dbg!(gamepad.is_pressed(Button::South)));
+    }
+}

2021-05-08/nin10news-decode/mod.ts

@@ -0,0 +1 @@
+import * as AES from "https://github.com/brix/crypto-js/src/aes.js";

2021-07-05/michael/index.html

@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>How many Letters?</title>
+</head>
+
+<body>
+    <textarea id="input" name="input" id="" cols="30" rows="10"></textarea>
+    <button id="submit" type="submit">Submit</button>
+    <h3>Output</h3>
+    <table id="output"></table>
+</body>
+
+<style>
+    table,
+    th,
+    td {
+        border: 1px solid black;
+    }
+</style>
+
+
+<script>
+    const btn = document.querySelector("#submit");
+    const textarea = document.querySelector("#input");
+    const table = document.querySelector("#output");
+
+    btn.addEventListener("click", () => {
+        let frequency = getFrequency(textarea.value);
+        output.innerHTML = mapToTableCells(frequency);
+    });
+
+
+    function mapToTableCells(map) {
+        let str = "<tr><th>Character</th><th>Times Appeared</th></tr>";
+
+        for (const pair of map[Symbol.iterator]()) {
+            str += `<tr><td>${pair[0]}</td><td>${pair[1]}</td></tr>`
+        }
+
+        return str;
+    }
+
+
+    function getFrequency(str) {
+        const freq = new Map();
+
+        for (let i = 0; i < str.length; i++) {
+            const char = str.charAt(i);
+            if (freq.has(char)) {
+                let count = freq.get(char);
+                freq.set(char, count + 1);
+            } else {
+                freq.set(char, 1);
+            }
+        }
+
+        return freq;
+    }
+
+</script>
+
+</html>

2021-07-05/michael/main.py

@@ -0,0 +1,27 @@
+# hey bro can I ask for a little help?
+# I want to figure out a script or sumn that can count and separate the characters in a string of text
+# like if I enter in dushdhaosbvdiebwb
+# it’ll tell me how many of which character is in it
+
+
+# key, value
+# string, integer
+# "a": 1
+#
+
+
+def main():
+    freq = {}
+    str = input("Enter Text: ")
+
+    for char in str:
+        if char in freq:
+            freq[char] += 1
+        else:
+            freq[char] = 1
+
+    print(freq)
+
+
+if __name__ == "__main__":
+    main()

2021-07-06/fizz_buzz/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "fizz_buzz"
+version = "0.1.0"

2021-07-06/fizz_buzz/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "fizz_buzz"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

2021-07-06/fizz_buzz/src/main.rs

@@ -0,0 +1 @@
+fn main(){for n in 1..101{let mut m=String::new();if n%3==0{m+="Fizz";}if n%5==0{m+="Buzz";}println!("{}",if m.len()==0{n.to_string()}else{m});}}