Added scroll wheel zoom

src/inputstatus.rs

@@ -1,9 +1,11 @@
-use winit::event::{ElementState, VirtualKeyCode};
+use winit::event::{ElementState, MouseButton, MouseScrollDelta, TouchPhase, VirtualKeyCode};
 
 pub struct InputStatus {
+	scroll_speed: f32,
 	pub key_left: bool,
 	pub key_right: bool,
 	pub key_thrust: bool,
+	pub v_scroll: f32,
 }
 
 impl InputStatus {
@@ -12,10 +14,12 @@ impl InputStatus {
 			key_left: false,
 			key_right: false,
 			key_thrust: false,
+			v_scroll: 0.0,
+			scroll_speed: 10.0,
 		}
 	}
 
-	pub fn process(&mut self, state: &ElementState, key: &VirtualKeyCode) {
+	pub fn process_key(&mut self, state: &ElementState, key: &VirtualKeyCode) {
 		let down = state == &ElementState::Pressed;
 		match key {
 			VirtualKeyCode::Left => self.key_left = down,
@@ -24,4 +28,23 @@ impl InputStatus {
 			_ => {}
 		}
 	}
+
+	pub fn process_click(&mut self, state: &ElementState, key: &MouseButton) {
+		let _down = state == &ElementState::Pressed;
+		match key {
+			_ => {}
+		}
+	}
+
+	pub fn process_scroll(&mut self, delta: &MouseScrollDelta, _phase: &TouchPhase) {
+		match delta {
+			MouseScrollDelta::LineDelta(_h, v) => {
+				self.v_scroll -= self.scroll_speed * v;
+			}
+			// TODO: handle this better
+			MouseScrollDelta::PixelDelta(v) => {
+				self.v_scroll -= v.x as f32;
+			}
+		}
+	}
 }

src/main.rs

@@ -78,8 +78,16 @@ impl Game {
 		}
 	}
 
-	fn process_input(&mut self, gpu: &ElementState, key: &VirtualKeyCode) {
-		self.input.process(gpu, key)
+	fn process_key(&mut self, state: &ElementState, key: &VirtualKeyCode) {
+		self.input.process_key(state, key)
+	}
+
+	fn process_click(&mut self, state: &ElementState, key: &MouseButton) {
+		self.input.process_click(state, key)
+	}
+
+	fn process_scroll(&mut self, delta: &MouseScrollDelta, phase: &TouchPhase) {
+		self.input.process_scroll(delta, phase)
 	}
 
 	fn update(&mut self) {
@@ -98,6 +106,11 @@ impl Game {
 			self.player.body.rot(Deg { 0: -15.0 } * t);
 		}
 
+		if self.input.v_scroll != 0.0 {
+			self.camera.zoom += self.input.v_scroll;
+			self.input.v_scroll = 0.0;
+		}
+
 		self.player.body.tick(t);
 		self.camera.pos = self.player.body.pos;
 
@@ -160,7 +173,13 @@ pub async fn run() -> Result<()> {
 								..
 							},
 						..
-					} => game.process_input(state, key),
+					} => game.process_key(state, key),
+					WindowEvent::MouseInput { state, button, .. } => {
+						game.process_click(state, button)
+					}
+					WindowEvent::MouseWheel { delta, phase, .. } => {
+						game.process_scroll(delta, phase)
+					}
 					WindowEvent::Resized(physical_size) => {
 						gpu.resize(*physical_size);
 					}