From ba78b90209c5fd3a183043ad3f5110c4a60bf335 Mon Sep 17 00:00:00 2001
From: eug-vs <eugene@eug-vs.xyz>
Date: Wed, 27 Oct 2021 21:16:29 +0300
Subject: feat: control camera with VIM keys

---
 src/main.rs | 44 +++++++++++++++++++++++++++++++++++---------
 1 file changed, 35 insertions(+), 9 deletions(-)

(limited to 'src/main.rs')

diff --git a/src/main.rs b/src/main.rs
index 9fec82d..804ddfa 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,11 +2,11 @@ extern crate ncurses;
 
 mod camera;
 mod canvas;
-use std::f32::consts::PI;
+use std::{f32::consts::PI, time::Instant};
 use cgmath::Vector3;
 use ncurses::*;
 
-use crate::camera::{Buffer, Camera, WIDTH, HEIGHT};
+use crate::camera::{Buffer, Camera, WIDTH, HEIGHT, rotate_z};
 
 fn main() {
     let mut cam = Camera {
@@ -22,14 +22,40 @@ fn main() {
 
     initscr();
 
-    for _round in 0..20 {
-        for i in 0..60 {
-            cam.time = (i as f32 / 60.0) * 2.0 * PI;
-            cam.render();
+    let time = 0;
 
-            clear();
-            addstr(&cam.buffer.to_string());
-            refresh();
+    while true {
+        clear();
+        flushinp();
+
+        // Render
+        cam.time = (time as f32 / 60.0) * 2.0 * PI;
+        let timestamp = Instant::now();
+        cam.render();
+        addstr(&cam.buffer.to_string());
+        addstr(&format!("\nRendered in {:?}\n", timestamp.elapsed()).to_string());
+        refresh();
+
+        // Handle input
+        let char = getch();
+
+        let cam_speed = 0.5;
+        let cam_turn_rate = 30.0;
+
+        if char == 106 || char == 74 {
+            cam.position -= cam.direction * cam_speed;
+        } else if char == 107 || char == 75 {
+            cam.position += cam.direction * cam_speed;
+        } else if char == 104 {
+            cam.direction = rotate_z(cam.direction, -2.0 * PI / cam_turn_rate);
+        } else if char == 108 {
+            cam.direction = rotate_z(cam.direction, 2.0 * PI / cam_turn_rate);
+        } else if char == 72 {
+            cam.position -= rotate_z(cam.direction, PI / 2.0) * cam_speed;
+        } else if char == 76 {
+            cam.position += rotate_z(cam.direction, PI / 2.0) * cam_speed;
+        } else if char == 70 { // F
+            cam.direction = -cam.direction;
         }
     }
 
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