From: Bernie Innocenti <bernie@codewiz.org>
Date: Sun, 9 Apr 2017 01:31:35 +0000 (-0400)
Subject: Implement mouse panning and streamline keyboard movement.
X-Git-Tag: v0.5.0~1
X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;h=082d9095991d445ad839e5ac3eb94bc3bc772951;p=mandelwow.git

Implement mouse panning and streamline keyboard movement.
---

diff --git a/main.rs b/main.rs
index d7e8c00..5507f4a 100644
--- a/main.rs
+++ b/main.rs
@@ -110,17 +110,6 @@ fn main() {
                 KeyboardInput(Pressed, _, Some(VirtualKeyCode::B)) => {
                     bounding_box_enabled ^= true;
                 },
-                KeyboardInput(Pressed, _, Some(VirtualKeyCode::F)) => {
-                    fullscreen ^= true;
-                    if fullscreen {
-                        glutin::WindowBuilder::new()
-                            .with_fullscreen(glutin::get_primary_monitor())
-                            .rebuild_glium(&display).unwrap();
-                    } else {
-                        glutin::WindowBuilder::new()
-                            .rebuild_glium(&display).unwrap();
-                    }
-                },
                 KeyboardInput(Pressed, _, Some(VirtualKeyCode::P)) => {
                     pause ^= true;
                 },
@@ -133,6 +122,19 @@ fn main() {
                 KeyboardInput(Pressed, _, Some(VirtualKeyCode::F10)) => {
                     screenshot(&display);
                 },
+                KeyboardInput(Pressed, _, Some(VirtualKeyCode::F11)) => {
+                    fullscreen ^= true;
+                    if fullscreen {
+                        // Not implemented on Linux
+                        glutin::WindowBuilder::new()
+                            .with_fullscreen(glutin::get_primary_monitor())
+                            .with_depth_buffer(24)
+                            .rebuild_glium(&display).unwrap();
+                    } else {
+                        //glutin::WindowBuilder::new()
+                        //    .rebuild_glium(&display).unwrap();
+                    }
+                },
                 ev => camera.process_input(&ev),
             }
         }
diff --git a/support/camera.rs b/support/camera.rs
index 67beeac..fe1398d 100644
--- a/support/camera.rs
+++ b/support/camera.rs
@@ -1,7 +1,7 @@
 extern crate glutin;
 
 use glutin::ElementState::{Pressed, Released};
-use glutin::Event::KeyboardInput;
+use glutin::Event::{KeyboardInput, MouseMoved};
 use glutin::VirtualKeyCode;
 use support::vec3::Vec3;
 use support::vec3::norm;
@@ -27,6 +27,11 @@ pub struct CameraState {
     turning_left: bool,
     turning_down: bool,
     turning_right: bool,
+
+    mouse_x: i32,
+    mouse_y: i32,
+    rel_x: i32,
+    rel_y: i32,
 }
 
 impl CameraState {
@@ -109,52 +114,53 @@ impl CameraState {
                      s.2 * f.0 - s.0 * f.2,
                      s.0 * f.1 - s.1 * f.0);
 
+        let walk_speed = 0.01;
+        let strife_speed = 0.02;
+        let pan_speed = 0.01;
+
         if self.moving_up {
-            self.pos += u * 0.01;
-        }
-        if self.moving_left {
-            self.pos.0 -= s.0 * 0.01;
-            self.pos.1 -= s.1 * 0.01;
-            self.pos.2 -= s.2 * 0.01;
+            self.pos += u * strife_speed;
         }
         if self.moving_down {
-            self.pos.0 -= u.0 * 0.01;
-            self.pos.1 -= u.1 * 0.01;
-            self.pos.2 -= u.2 * 0.01;
+            self.pos -= u * strife_speed;
+        }
+        if self.moving_left {
+            self.pos -= s * strife_speed;
         }
         if self.moving_right {
-            self.pos += s * 0.01;
+            self.pos += s * strife_speed;
         }
         if self.moving_forward {
-            self.pos += f * 0.01;
+            self.pos += f * walk_speed;
         }
         if self.moving_backward {
-            self.pos.0 -= f.0 * 0.01;
-            self.pos.1 -= f.1 * 0.01;
-            self.pos.2 -= f.2 * 0.01;
-        }
-        if self.turning_left {
-            let a: f32 = 0.05;
-            self.dir = Vec3(f.0 * a.cos() + f.2 * a.sin(), f.1, - f.0 * a.sin() + f.2 * a.cos());
-        }
-        if self.turning_right {
-            let a: f32 = -0.05;
-            self.dir = Vec3(f.0 * a.cos() + f.2 * a.sin(), f.1, - f.0 * a.sin() + f.2 * a.cos());
-        }
-        if self.turning_up {
-            let a: f32 = -0.05;
-            self.dir = Vec3(f.0, f.1 * a.cos() - f.2 * a.sin(), f.1 * a.sin() + f.2 * a.cos());
-        }
-        if self.turning_down {
-            let a: f32 = 0.05;
-            self.dir = Vec3(f.0, f.1 * a.cos() - f.2 * a.sin(), f.1 * a.sin() + f.2 * a.cos());
+            self.pos -= f * walk_speed;
         }
+
+        if self.turning_left { self.rel_x -= 2; }
+        if self.turning_right { self.rel_x += 2; }
+        if self.turning_up { self.rel_y -= 2; }
+        if self.turning_down { self.rel_y += 2; }
+        let vx = -pan_speed * self.rel_x as f32;
+        let vy = -pan_speed * self.rel_y as f32;
+        self.dir = Vec3(f.0 * vx.cos() + f.2 * vx.sin(),
+                        f.1 * vy.cos() - f.2 * vy.sin(),
+                        f.1 * vy.sin() - f.0 * vx.sin() + f.2 * vx.cos() * vy.cos());
+        self.rel_x = 0;
+        self.rel_y = 0;
+
         //println!("camera_pos = {:?}", self.pos);
         //println!("camera_dir = {:?}", self.dir);
     }
 
     pub fn process_input(&mut self, event: &glutin::Event) {
         match event {
+            &MouseMoved(x, y) => {
+                self.rel_x += x - self.mouse_x;
+                self.rel_y += y - self.mouse_y;
+                self.mouse_x = x;
+                self.mouse_y = y;
+            }
             &KeyboardInput(Pressed, _, Some(VirtualKeyCode::Up)) => {
                 self.moving_up = true;
             },
diff --git a/support/vec3.rs b/support/vec3.rs
index 10820fb..a515bde 100644
--- a/support/vec3.rs
+++ b/support/vec3.rs
@@ -4,6 +4,7 @@ use std::f32;
 use std::ops::Add;
 use std::ops::AddAssign;
 use std::ops::Sub;
+use std::ops::SubAssign;
 use std::ops::Mul;
 
 #[derive(Default, PartialEq, Debug, Clone, Copy)]
@@ -29,6 +30,12 @@ impl Sub for Vec3 {
     }
 }
 
+impl SubAssign for Vec3 {
+    fn sub_assign(&mut self, other: Vec3) {
+        *self = Vec3(self.0 - other.0, self.1 - other.1, self.2 - other.2)
+    }
+}
+
 impl Mul<f32> for Vec3 {
     type Output = Vec3;
     fn mul(self, f: f32) -> Vec3 {