Add touch controls, switch to tinymap for keyboard input

Cargo.lock

@@ -976,6 +976,7 @@ dependencies = [
  "shipyard",
  "static_assertions",
  "strum",
+ "tinyset",
  "uflow",
  "winapi",
 ]
@@ -1989,6 +1990,15 @@ dependencies = [
  "bytemuck",
 ]
 
+[[package]]
+name = "tinyset"
+version = "0.4.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2417e47ddd3809ad40222777ac754ee881b3a6401e38cbeeeb3ee1ca5f30aa0"
+dependencies = [
+ "rand",
+]
+
 [[package]]
 name = "toml"
 version = "0.7.3"

README.md

@@ -26,49 +26,64 @@
 <h2>download</h2>
 <a href="https://github.com/griffi-gh/kubi/releases/tag/nightly">Latest nightly release</a>
 
-<h2>building</h2>
+<h2>build for windows/linux</h2>
 
-build/run
+**build/run**
 
 ```bash
 cargo build --bin kubi
 cargo run --bin kubi
 ```
 
-build in release mode, with nightly optimizations
+**build in release mode, with nightly optimizations**
 
 ```bash
 cargo +nightly build --bin kubi --features nightly --release
 ```
 
-build for android
+<h2>build for android</h2>
 
-please note that android support is purely experimental!
+please note that android support is highly experimental!\
-gamepad, keyboard and mouse input is currently borked, and touch controls are not available.
+gamepad, mouse input is currently borked, and proper touch controls are not available.\
 srgb and blending are broken too, which leads to many rendering issues
 
-prerequisites: Android SDK, NDK, platform-tools, latest JDK (all should be in $PATH)
+prerequisites: Android SDK, command line tools, NDK, platform-tools, latest JDK\
+(make sure that your $PATH variable is configured properly)
 
-Setup:
+**Setup:**
 
 ```bash
 cargo install cargo-apk
 cargo target add aarch64-linux-android
 ```
 
-Build:
+**Build:**
-`--no-default-features` is required for keyboard input!
+
+`--no-default-features` is required for keyboard input!\
+(`prefer-raw-events` feature *must* be disabled on android)
+
+Mouse input is not implemented, touch only!
 
 ```bash
 cargo apk build -p kubi --no-default-features
 ```
 
-Run:
+**Run:**
 
 ```bash
-cargo apk run -p kubi --features nightly
+cargo apk run -p kubi --no-default-features
 ```
 
+<h2>android controls</h2>
+
+<img src=".readme/touch_controls.png" alt="touch control scheme" width="300">
+
+- Left side: **Movement**
+- Rigth side: **Camera controls**
+- Bottom right corner:
+  - **B** (e.g. place blocks)
+  - **A** (e.g. break, attack)
+
 <h2>mutiplayer</h2>
 
 to join a multiplayer server, just pass the ip address as an argument

kubi/Cargo.toml

@@ -27,6 +27,7 @@ postcard = { version = "1.0", features = ["alloc"] }
 serde_json = { version = "1.0", optional = true }
 lz4_flex = { version = "0.10", default-features = false, features = ["std", "checked-decode"] }
 static_assertions = "1.1"
+tinyset = "0.4"
 
 [target.'cfg(target_os = "android")'.dependencies]
 ndk = "0.7"

kubi/src/block_placement.rs

@@ -30,7 +30,7 @@ fn pick_block_with_number_keys(
 ) {
   let Some((_, mut holding)) = (&main_player, &mut holding).iter().next() else { return };
   for &(key, block) in BLOCK_KEY_MAP {
-    if input.keyboard_state.contains(&key) {
+    if input.keyboard_state.contains(key as u32) {
       holding.0 = Some(block);
       return
     }

kubi/src/control_flow.rs

@@ -9,7 +9,7 @@ pub fn exit_on_esc(
   raw_inputs: UniqueView<RawKbmInputState>,
   mut control_flow: UniqueViewMut<SetControlFlow>
 ) {
-  if raw_inputs.keyboard_state.contains(&VirtualKeyCode::Escape) {
+  if raw_inputs.keyboard_state.contains(VirtualKeyCode::Escape as u32) {
     control_flow.0 = Some(ControlFlow::Exit);
   }
 }

kubi/src/events.rs

@@ -1,6 +1,6 @@
 use glam::UVec2;
 use shipyard::{World, Component, AllStoragesViewMut, SparseSet, NonSendSync, UniqueView};
-use glium::glutin::event::{Event, DeviceEvent, DeviceId, WindowEvent};
+use glium::glutin::event::{Event, DeviceEvent, DeviceId, WindowEvent, Touch};
 use crate::rendering::Renderer;
 
 pub mod player_actions;
@@ -17,6 +17,10 @@ pub struct InputDeviceEvent{
   pub event: DeviceEvent
 }
 
+#[derive(Component, Clone, Copy, Debug)]
+#[repr(transparent)]
+pub struct TouchEvent(pub Touch);
+
 #[derive(Component, Clone, Copy, Debug, Default)]
 pub struct WindowResizedEvent(pub UVec2);
 
@@ -24,7 +28,6 @@ pub fn process_glutin_events(world: &mut World, event: &Event<'_, ()>) {
   #[allow(clippy::collapsible_match, clippy::single_match)]
   match event {
     Event::WindowEvent { window_id: _, event } => match event {
-      
       WindowEvent::Resized(size) => {
         world.add_entity((
           EventComponent,
@@ -43,6 +46,13 @@ pub fn process_glutin_events(world: &mut World, event: &Event<'_, ()>) {
         ));
       }
 
+      WindowEvent::Touch(touch) => {
+        world.add_entity((
+          EventComponent,
+          TouchEvent(*touch)
+        ));
+      }
+
       _ => ()
     },
 

kubi/src/input.rs

@@ -1,10 +1,14 @@
 use gilrs::{Gilrs, GamepadId, Button, Event, Axis};
-use glam::{Vec2, DVec2, vec2};
+use glam::{Vec2, DVec2, vec2, dvec2};
-use glium::glutin::event::{DeviceEvent, VirtualKeyCode, ElementState};
+use glium::glutin::event::{DeviceEvent, DeviceId, VirtualKeyCode, ElementState, TouchPhase};
-use hashbrown::HashSet;
+use hashbrown::HashMap;
+use tinyset::{SetU32, SetU64};
 use nohash_hasher::BuildNoHashHasher;
 use shipyard::{AllStoragesView, Unique, View, IntoIter, UniqueViewMut, Workload, IntoWorkload, UniqueView, NonSendSync};
-use crate::events::InputDeviceEvent;
+use crate::{
+  events::{InputDeviceEvent, TouchEvent},
+  rendering::WindowSize
+};
 
 #[derive(Unique, Clone, Copy, Default, Debug)]
 pub struct Inputs {
@@ -19,11 +23,62 @@ pub struct PrevInputs(pub Inputs);
 
 #[derive(Unique, Clone, Default, Debug)]
 pub struct RawKbmInputState {
-  pub keyboard_state: HashSet<VirtualKeyCode, BuildNoHashHasher<u32>>,
+  pub keyboard_state: SetU32,
   pub button_state: [bool; 32],
   pub mouse_delta: DVec2
 }
 
+#[derive(Clone, Copy, Debug, Default)]
+pub enum FingerCheck {
+  #[default]
+  Start,
+  Current,
+  StartOrCurrent,
+  StartAndCurrent,
+  NotMoved,
+}
+
+#[derive(Clone, Copy, Debug)]
+pub struct Finger {
+  pub id: u64,
+  pub device_id: DeviceId,
+  pub prev_position: DVec2,
+  pub start_position: DVec2,
+  pub current_position: DVec2,
+  pub has_moved: bool,
+}
+impl Finger {
+  pub fn within_area(&self, area_pos: DVec2, area_size: DVec2, check: FingerCheck) -> bool {
+    let within_area = |pos: DVec2| -> bool {
+      ((pos - area_pos).min_element() >= 0.) &&
+      ((pos - (area_pos + area_size)).max_element() <= 0.)
+    };
+    let start = within_area(self.start_position);
+    let current = within_area(self.current_position);
+    match check {
+      FingerCheck::Start => start,
+      FingerCheck::Current => current,
+      FingerCheck::StartOrCurrent => start || current,
+      FingerCheck::StartAndCurrent => start && current,
+      FingerCheck::NotMoved => current && !self.has_moved,
+    }
+  }
+}
+
+#[derive(Unique, Clone, Default, Debug)]
+pub struct RawTouchState {
+  //TODO: handle multiple touch devices somehow
+  pub fingers: HashMap<u64, Finger, BuildNoHashHasher<u64>>
+}
+
+impl RawTouchState {
+  pub fn query_area(&self, area_pos: DVec2, area_size: DVec2, check: FingerCheck) -> impl Iterator<Item = Finger> + '_ {
+    self.fingers.iter().filter_map(move |(_, &finger)| {
+      finger.within_area(area_pos, area_size, check).then_some(finger)
+    })
+  }
+}
+
 #[derive(Unique)]
 pub struct GilrsWrapper(Option<Gilrs>);
 
@@ -46,8 +101,8 @@ fn process_events(
       DeviceEvent::Key(input) => {
         if let Some(keycode) = input.virtual_keycode {
           match input.state {
-            ElementState::Pressed  => input_state.keyboard_state.insert(keycode),
+            ElementState::Pressed  => input_state.keyboard_state.insert(keycode as u32),
-            ElementState::Released => input_state.keyboard_state.remove(&keycode),
+            ElementState::Released => input_state.keyboard_state.remove(keycode as u32),
           };
         }
       },
@@ -61,6 +116,39 @@ fn process_events(
   }
 }
 
+fn process_touch_events(
+  touch_events: View<TouchEvent>,
+  mut touch_state: UniqueViewMut<RawTouchState>,
+) {
+  for (_, finger) in &mut touch_state.fingers {
+    finger.prev_position = finger.current_position;
+  }
+  for event in touch_events.iter() {
+    let position = dvec2(event.0.location.x, event.0.location.y);
+    match event.0.phase {
+      TouchPhase::Started => {
+        touch_state.fingers.insert(event.0.id, Finger {
+          id: event.0.id,
+          device_id: event.0.device_id,
+          start_position: position,
+          current_position: position,
+          prev_position: position,
+          has_moved: false
+        });
+      },
+      TouchPhase::Moved => {
+        if let Some(finger) = touch_state.fingers.get_mut(&event.0.id) {
+          finger.has_moved = true;
+          finger.current_position = position;
+        }
+      },
+      TouchPhase::Ended | TouchPhase::Cancelled => {
+        touch_state.fingers.remove(&event.0.id);
+      },
+    }
+  }
+}
+
 fn process_gilrs_events(
   mut gilrs: NonSendSync<UniqueViewMut<GilrsWrapper>>,
   mut active_gamepad: UniqueViewMut<ActiveGamepad>
@@ -85,10 +173,10 @@ fn update_input_state (
   mut inputs: UniqueViewMut<Inputs>,
 ) {
   inputs.movement += Vec2::new(
-    raw_inputs.keyboard_state.contains(&VirtualKeyCode::D) as u32 as f32 -
+    raw_inputs.keyboard_state.contains(VirtualKeyCode::D as u32) as u32 as f32 -
-    raw_inputs.keyboard_state.contains(&VirtualKeyCode::A) as u32 as f32,
+    raw_inputs.keyboard_state.contains(VirtualKeyCode::A as u32) as u32 as f32,
-    raw_inputs.keyboard_state.contains(&VirtualKeyCode::W) as u32 as f32 -
+    raw_inputs.keyboard_state.contains(VirtualKeyCode::W  as u32) as u32 as f32 -
-    raw_inputs.keyboard_state.contains(&VirtualKeyCode::S) as u32 as f32
+    raw_inputs.keyboard_state.contains(VirtualKeyCode::S as u32) as u32 as f32
   );
   inputs.look += raw_inputs.mouse_delta.as_vec2();
   inputs.action_a |= raw_inputs.button_state[1];
@@ -112,6 +200,60 @@ fn update_input_state_gamepad (
   }
 }
 
+fn update_input_state_touch (
+  touch_state: UniqueView<RawTouchState>,
+  win_size: UniqueView<WindowSize>,
+  mut inputs: UniqueViewMut<Inputs>,
+) {
+  let w = win_size.0.as_dvec2();
+
+  //Movement
+  if let Some(finger) = touch_state.query_area(
+    dvec2(0., 0.),
+    dvec2(w.x / 2., w.y),
+    FingerCheck::Start
+  ).next() {
+    inputs.movement += (((finger.current_position - finger.start_position) / (w.x / 4.)) * dvec2(1., -1.)).as_vec2();
+  }
+
+  //Action buttons
+  let action_button_fingers = {
+    let mut action_button_fingers = SetU64::new();
+
+    //Creates iterator of fingers that started within action button area
+    let action_finger_iter = || touch_state.query_area(
+      dvec2(w.x * 0.75, w.y * 0.666),
+      dvec2(w.x * 0.25, w.y * 0.333),
+      FingerCheck::Start
+    );
+
+    //Action button A
+    inputs.action_a |= action_finger_iter().filter(|finger| finger.within_area(
+      dvec2(w.x * (0.75 + 0.125), w.y * 0.666),
+      dvec2(w.x * 0.125, w.y * 0.333),
+      FingerCheck::StartOrCurrent
+    )).map(|x| action_button_fingers.insert(x.id)).next().is_some();
+    
+    //Action button B
+    inputs.action_b |= action_finger_iter().filter(|finger| finger.within_area(
+      dvec2(w.x * 0.75, w.y * 0.666),
+      dvec2(w.x * 0.125, w.y * 0.333),
+      FingerCheck::StartOrCurrent
+    )).map(|x| action_button_fingers.insert(x.id)).next().is_some();
+
+    action_button_fingers
+  };
+
+  //Camera controls
+  if let Some(finger) = touch_state.query_area(
+    dvec2(w.x / 2., 0.),
+    dvec2(w.x / 2., w.y),
+    FingerCheck::Start
+  ).find(|x| !action_button_fingers.contains(x.id)) {
+    inputs.look += (((finger.current_position - finger.prev_position) / (w.x / 4.)) * 300.).as_vec2();
+  }
+}
+
 fn input_end(
   mut inputs: UniqueViewMut<Inputs>,
 ) {
@@ -133,14 +275,17 @@ pub fn init_input (
   storages.add_unique(Inputs::default());
   storages.add_unique(PrevInputs::default());
   storages.add_unique(RawKbmInputState::default());
+  storages.add_unique(RawTouchState::default());
 }
 
 pub fn process_inputs() -> Workload {
   (
     process_events,
+    process_touch_events,
     process_gilrs_events,
     input_start,
     update_input_state,
+    update_input_state_touch,
     update_input_state_gamepad,
     input_end,
   ).into_sequential_workload()

kubi/src/loading_screen.rs

@@ -76,7 +76,7 @@ fn override_loading(
   kbm_state: UniqueView<RawKbmInputState>,
   mut state: UniqueViewMut<NextState>
 ) {
-  if kbm_state.keyboard_state.contains(&VirtualKeyCode::F) {
+  if kbm_state.keyboard_state.contains(VirtualKeyCode::F as u32) {
     state.0 = Some(GameState::InGame);
   }
 }