From d42a9178dab00d399b851cbedc8433b4b7a3e47a Mon Sep 17 00:00:00 2001
From: foosinn <foosinn@f2o.io>
Date: Wed, 27 May 2020 13:09:11 +0200
Subject: [PATCH] wip

---
 src/day13/main.rs | 80 ++++++++++++++---------------------------------
 src/intcode.rs    | 47 ++++++++++++++++++++++++++++
 2 files changed, 71 insertions(+), 56 deletions(-)

diff --git a/src/day13/main.rs b/src/day13/main.rs
index 7ae3008..840e5f9 100644
--- a/src/day13/main.rs
+++ b/src/day13/main.rs
@@ -9,13 +9,13 @@ fn main() -> Result<(), Box<dyn Error>> {
     let f = File::open("input13")?;
     let mut computer = intcode::Computer::from(f);
     let mut grid: Grid = HashMap::new();
-    while let Some(output) = &computer.run_until_n_output(3) {
+    while let Some(output) = computer.run_until_n_output(3) {
         let mut output = output.into_iter();
         let xy = XY {
-            x: *output.next().unwrap(),
-            y: *output.next().unwrap(),
+            x: output.next().unwrap(),
+            y: output.next().unwrap(),
         };
-        let tile = Tile::from(*output.next().unwrap());
+        let tile = Tile::from(output.next().unwrap());
         grid.insert(xy, tile);
     }
 
@@ -25,63 +25,31 @@ fn main() -> Result<(), Box<dyn Error>> {
 
     // part2
     let mut computer = computer.clone_with_modified_program(vec![(0, 2)]);
-    let mut xmin = 0;
-    let mut xmax = 0;
-    let mut ymin = 0;
-    let mut ymax = 0;
-    grid.iter().for_each(|(xy, _)| {
-        if xy.x < xmin {
-            xmin = xy.x;
-        }
-        if xy.x > xmax {
-            xmax = xy.x
-        }
-        if xy.y < ymin {
-            ymin = xy.y;
-        }
-        if xy.y > ymax {
-            ymax = xy.y
-        }
-    });
     ncurses::initscr();
-    ncurses::refresh();
-    let mut score: isize;
+    ncurses::noecho();
     loop {
-        let key = ncurses::getch();
-        ncurses::clear();
-        let joystick = match key {
-            104 => 1,
-            108 => -1,
+        while let Some(output) = &computer.run_until_input() {
+            output.chunks(3).for_each(|c| {
+                let mut score = 0;
+                if let &[x, y, value] = c {
+                    if x == -1 && y == 0 {
+                        score = value;
+                    } else {
+                        let tile = Tile::from(value);
+                        ncurses::mvprintw((y + 1) as i32, x as i32, tile.char());
+                    }
+                    ncurses::mvprintw(0, 0, &format!("score: {}", score));
+                }
+            });
+        }
+        ncurses::refresh();
+        let joystick = match ncurses::getch() {
+            104 => -1,
+            108 => 1,
             _ => 0,
         };
-        let mut drawcount = 0;
-        let mut itemdrawcount = 0;
-        'computer: while let Some(output) = &computer.run_until_n_output(3) {
-            drawcount += 1;
-            computer.push_input(joystick);
-            let mut output = output.into_iter();
-            let x = *output.next().unwrap();
-            let y = *output.next().unwrap();
-            if x == -1 && y == 0 {
-                score = *output.next().unwrap();
-            } else {
-                let tile = Tile::from(*output.next().unwrap());
-                ncurses::mvprintw(y as i32, x as i32, tile.char());
-                if tile == Tile::HorizontalPaddle {
-                    itemdrawcount = drawcount;
-                    break 'computer;
-                }
-            }
-        }
-
-        ncurses::mvprintw(
-            0,
-            0,
-            &format!("{} {} {} {}", key, joystick, drawcount, itemdrawcount),
-        );
-        ncurses::refresh();
+        computer.push_input_and_step(joystick);
     }
-    //println!("{} {} {} {}", xmin, xmax, ymin, ymax);
 }
 
 #[derive(Eq, PartialEq)]
diff --git a/src/intcode.rs b/src/intcode.rs
index 7befcc2..b1b96e8 100644
--- a/src/intcode.rs
+++ b/src/intcode.rs
@@ -181,6 +181,12 @@ impl Computer {
         self.outputs.pop_front()
     }
 
+    pub fn push_input_and_step(&mut self, input: isize) {
+        self.inputs.push_back(input);
+        self.halted = false;
+        self.step()
+    }
+
     pub fn clone_with_modified_program(&self, u: Vec<(usize, isize)>) -> Computer {
         let mut computer = self.clone();
         for (pos, val) in u {
@@ -201,6 +207,26 @@ impl Computer {
         }
     }
 
+    pub fn run_until_input(&mut self) -> Option<Vec<isize>> {
+        self.step_until_input();
+        if self.outputs.len() > 0 {
+            return Some(self.outputs.split_off(0).into_iter().collect());
+        }
+        return None;
+    }
+
+    pub fn run_until_n_output(&mut self, n: usize) -> Option<Vec<isize>> {
+        loop {
+            self.step();
+            if self.outputs.len() >= n {
+                return Some(self.outputs.split_off(0).into_iter().collect());
+            }
+            if self.halted {
+                return None;
+            }
+        }
+    }
+
     pub fn run_until_output(&mut self) -> Option<isize> {
         loop {
             self.step();
@@ -223,6 +249,27 @@ impl Computer {
         self.run_until_output()
     }
 
+    fn step_until_input(&mut self) {
+        loop {
+            let instruction = self.program[self.pos];
+            let instruction = ModedOpcode::from(instruction);
+            self.modes = Modes::from(&instruction);
+            let advance = match Opcode::from(&instruction) {
+                Opcode::Add => self.add(),
+                Opcode::Multiply => self.multiply(),
+                Opcode::Input => return,
+                Opcode::Output => self.output(),
+                Opcode::JumpIfTrue => self.jump_if_true(),
+                Opcode::JumpIfFalse => self.jump_if_false(),
+                Opcode::LessThan => self.less_than(),
+                Opcode::Equals => self.equals(),
+                Opcode::RelativeAdj => self.relative_adj(),
+                Opcode::Halt => self.halt(),
+            };
+            self.pos += advance;
+        }
+    }
+
     fn step(&mut self) {
         let instruction = self.program[self.pos];
         let instruction = ModedOpcode::from(instruction);