Rewrite emulatorv1.0.0-alpha1

This is a complete rewrite and restructure of the entire emulator
project, as part of the effort in locking down the Bedrock specification
and in creating much better tooling for creating and using Bedrock
programs.

This commit adds a command-line argument scheme, an embedded assembler,
a headless emulator for use in non-graphical environments, deferred
window creation for programs that do not access the screen device,
and new versions of phosphor and bedrock-core. The new version of
phosphor supports multi-window programs, which will make it possible to
implement program forking in the system device later on, and the new
version of bedrock-core implements the final core specification.

1 files changed, 0 insertions, 164 deletions

diff --git a/src/devices/input.rs b/src/devices/input.rs
deleted file mode 100644
index 462f569..0000000
--- a/src/devices/input.rs
+++ /dev/null
@@ -1,164 +0,0 @@
-use crate::*;
-use phosphor::*;
-use std::collections::VecDeque;
-
-const CONTROL:  u8 = 0x80;
-const ALT:      u8 = 0x40;
-const SHIFT:    u8 = 0x20;
-
-const UP:       u8 = 0x80;
-const DOWN:     u8 = 0x40;
-const LEFT:     u8 = 0x20;
-const RIGHT:    u8 = 0x10;
-const CONFIRM:  u8 = 0x08;
-const CANCEL:   u8 = 0x04;
-const NEXT:     u8 = 0x02;
-const PREVIOUS: u8 = 0x01;
-
-macro_rules! test { ($value:expr, $mask:expr) => { $value & $mask != 0 }; }
-
-
-pub struct InputDevice {
-    pub wake_flag: bool,
-
-    pub pointer_position: ScreenPosition,
-    pub pointer_buttons: u8,
-    pub pointer_active: bool,
-
-    pub horizontal_scroll: i8,
-    pub vertical_scroll: i8,
-    pub horizontal_scroll_delta: f64,
-    pub vertical_scroll_delta: f64,
-
-    pub text_queue: VecDeque<u8>,
-    pub modifiers: u8,
-    pub navigation: u8,
-
-    pub controller_1: u8,
-    pub controller_2: u8,
-    pub controller_3: u8,
-    pub controller_4: u8,
-}
-
-impl InputDevice {
-    pub fn new() -> Self {
-        Self {
-            wake_flag: false,
-
-            pointer_position: ScreenPosition::ZERO,
-            pointer_buttons: 0x00,
-            pointer_active: false,
-
-            horizontal_scroll: 0x00,
-            vertical_scroll: 0x00,
-            horizontal_scroll_delta: 0.0,
-            vertical_scroll_delta: 0.0,
-
-            text_queue: VecDeque::new(),
-            modifiers: 0x00,
-            navigation: 0x00,
-
-            controller_1: 0x00,
-            controller_2: 0x00,
-            controller_3: 0x00,
-            controller_4: 0x00,
-        }
-    }
-
-    pub fn read_horizontal_scroll(&mut self) -> u8 {
-        std::mem::take(&mut self.horizontal_scroll) as u8
-    }
-
-    pub fn read_vertical_scroll(&mut self) -> u8 {
-        std::mem::take(&mut self.vertical_scroll) as u8
-    }
-
-    pub fn on_pointer_button(&mut self, mask: u8, action: Action) {
-        let new_buttons = match action {
-            Action::Pressed => self.pointer_buttons | mask,
-            Action::Released => self.pointer_buttons & !mask,
-        };
-        if new_buttons != self.pointer_buttons {
-            self.pointer_buttons = new_buttons;
-            self.wake_flag = true;
-        }
-    }
-
-    pub fn on_pointer_move(&mut self, position: ScreenPosition) {
-        if position != self.pointer_position {
-            self.pointer_position = position;
-            self.wake_flag = true;
-        }
-    }
-
-    pub fn on_scroll_horizontal(&mut self, delta: f64) {
-        self.horizontal_scroll_delta += delta;
-        while self.horizontal_scroll_delta >= 1.0 {
-            self.horizontal_scroll = self.horizontal_scroll.saturating_add(1);
-            self.horizontal_scroll_delta -= 1.0;
-            self.wake_flag = true;
-        }
-        while self.horizontal_scroll_delta <= -1.0 {
-            self.horizontal_scroll = self.horizontal_scroll.saturating_sub(1);
-            self.horizontal_scroll_delta += 1.0;
-            self.wake_flag = true;
-        }
-    }
-
-    pub fn on_scroll_vertical(&mut self, delta: f64) {
-        self.vertical_scroll_delta += delta;
-        while self.vertical_scroll_delta >= 1.0 {
-            self.vertical_scroll = self.vertical_scroll.saturating_add(1);
-            self.vertical_scroll_delta -= 1.0;
-            self.wake_flag = true;
-        }
-        while self.vertical_scroll_delta <= -1.0 {
-            self.vertical_scroll = self.vertical_scroll.saturating_sub(1);
-            self.vertical_scroll_delta += 1.0;
-            self.wake_flag = true;
-        }
-    }
-
-    pub fn on_character_input(&mut self, input: char) {
-        if let Ok(byte) = u8::try_from(u32::from(input)) {
-            self.text_queue.push_back(byte);
-            self.wake_flag = true;
-        }
-    }
-
-    pub fn on_keyboard_input(&mut self, input: KeyboardInput) {
-        let mask = match input.key {
-            KeyCode::Up     => UP,
-            KeyCode::Down   => DOWN,
-            KeyCode::Left   => LEFT,
-            KeyCode::Right  => RIGHT,
-            KeyCode::Return => CONFIRM,
-            KeyCode::Escape => CANCEL,
-            KeyCode::Tab => match test!(self.modifiers, SHIFT) {
-                false => NEXT,
-                true  => PREVIOUS
-            },
-            _ => return,
-        };
-        let navigation = match input.action {
-            Action::Pressed => self.navigation | mask,
-            Action::Released =>  self.navigation & !mask,
-        };
-        if navigation != self.navigation {
-            self.navigation = navigation;
-            self.wake_flag = true;
-        }
-    }
-
-    pub fn on_modifier_change(&mut self, modifiers: ModifiersState) {
-        let mut new_modifiers = 0x00;
-        if modifiers.ctrl()  { new_modifiers |= CONTROL }
-        if modifiers.alt()   { new_modifiers |= ALT     }
-        if modifiers.shift() { new_modifiers |= SHIFT   }
-        if new_modifiers != self.modifiers {
-            self.modifiers = new_modifiers;
-            self.wake_flag = true;
-        }
-
-    }
-}