output is a system now too

1 files changed, 57 insertions, 0 deletions

diff --git a/src/systems.rs b/src/systems.rs
index ac19b45..41f7d18 100644
--- a/src/systems.rs
+++ b/src/systems.rs
@@ -1,6 +1,7 @@
 
 use std::collections::{HashMap, HashSet};
 
+
 use specs::{
 	ReadStorage,
 	WriteStorage,
@@ -29,9 +30,16 @@ use super::resources::{
 	Size,
 	Floor,
 	Input,
+	Output,
 	NewEntities
 };
 
+use super::worldmessages::{
+	WorldMessage,
+	WorldUpdate,
+	FieldMessage
+};
+
 use super::assemblages::Player;
 
 
@@ -125,3 +133,52 @@ impl <'a> System<'a> for ClearControllers {
 	}
 }
 
+pub struct View;
+impl <'a> System<'a> for View {
+	type SystemData = (Read<'a, TopView>, Read<'a, Size>, ReadStorage<'a, Played>, Write<'a, Output>);
+	fn run(&mut self, (topview, size, players, mut output): Self::SystemData) {
+		
+		
+		let width = size.width;
+		let height = size.height;
+		let (values, mapping) = draw_room(&topview.cells, (width, height));
+		
+		let message = WorldMessage{updates: vec![WorldUpdate::Field(FieldMessage{
+			width,
+			height,
+			field: values,
+			mapping
+		})]};
+		output.output.clear();
+		for player in (&players).join() {
+			output.output.insert(player.name.clone(), message.clone());
+		}
+	}
+}
+
+fn draw_room(cells: &HashMap<Position, Vec<Visible>>, (width, height): (i32, i32)) -> (Vec<usize>, Vec<Vec<String>>){
+	let size = width * height;
+	let mut values :Vec<usize> = Vec::with_capacity(size as usize);
+	let mut mapping: Vec<Vec<String>> = Vec::new();
+	for y in 0..height {
+		for x in 0..width {
+			let sprites: Vec<String> = match cells.get(&Position{x: x, y: y}) {
+				Some(sprites) => {sprites.iter().map(|v| v.sprite.clone()).collect()}
+				None => {vec![]}
+			};
+			values.push(
+				match mapping.iter().position(|x| x == &sprites) {
+					Some(index) => {
+						index
+					}
+					None => {
+						mapping.push(sprites);
+						mapping.len() - 1
+					}
+				}
+			)
+		}
+	}
+	(values, mapping)
+}
+