From 0a485dd5f676bdf87b708c4c0ec44a3a263f25d0 Mon Sep 17 00:00:00 2001
From: tom barrett <spalf0@gmail.com>
Date: Sat, 15 Jun 2019 10:00:12 -0500
Subject: starting out

---
 src/main.rs | 111 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 src/main.rs

(limited to 'src')

diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..7ce26c9
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,111 @@
+use ggez::conf::Conf;
+use ggez::event::{self, EventHandler};
+use ggez::filesystem;
+use ggez::graphics::{self, spritebatch::SpriteBatch, DrawParam, FilterMode, Image};
+use ggez::nalgebra::{Point2, Vector2};
+use ggez::timer::delta;
+use ggez::{Context, ContextBuilder, GameResult};
+use std::collections::HashMap;
+use std::io::Read;
+use std::time::Duration;
+
+struct State {
+    dt: Duration,
+    spritebatches: HashMap<Tiles, SpriteBatch>,
+    map: Vec<char>,
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+enum Tiles {
+    Grass,
+    Dirt,
+}
+
+impl State {
+    fn new(context: &mut Context) -> GameResult<State> {
+        let mut grass = Image::new(context, "/grass.png")?;
+        grass.set_filter(FilterMode::Nearest);
+
+        let mut dirt = Image::new(context, "/dirt.png")?;
+        dirt.set_filter(FilterMode::Nearest);
+
+        let mut spritebatches = HashMap::new();
+        spritebatches.insert(Tiles::Grass, SpriteBatch::new(grass));
+        spritebatches.insert(Tiles::Dirt, SpriteBatch::new(dirt));
+
+        let mut map_str = String::new();
+        filesystem::open(context, "/map.txt")
+            .unwrap()
+            .read_to_string(&mut map_str)
+            .unwrap();
+
+        Ok(State {
+            dt: Duration::new(0, 0),
+            spritebatches,
+            map: map_str.replace("\n", "").chars().collect(),
+        })
+    }
+}
+
+const TILE_SIZE: f32 = 16.0;
+const TILE_SCALE: f32 = 4.0;
+
+impl EventHandler for State {
+    fn update(&mut self, context: &mut Context) -> GameResult {
+        self.dt = delta(context);
+        Ok(())
+    }
+
+    fn draw(&mut self, context: &mut Context) -> GameResult {
+        graphics::clear(context, graphics::BLACK);
+
+        for x in 0..4 {
+            for y in 0..4 {
+                let draw_param = DrawParam::default()
+                    .dest(Point2::new(
+                        TILE_SIZE * TILE_SCALE * x as f32,
+                        TILE_SIZE * TILE_SCALE * y as f32,
+                    ))
+                    .scale(Vector2::new(TILE_SCALE, TILE_SCALE));
+
+                let index = (x as usize) + (y as usize * 4);
+                match self.map[index] {
+                    'G' => {
+                        self.spritebatches
+                            .get_mut(&Tiles::Grass)
+                            .unwrap()
+                            .add(draw_param);
+                    }
+                    'D' => {
+                        self.spritebatches
+                            .get_mut(&Tiles::Dirt)
+                            .unwrap()
+                            .add(draw_param);
+                    }
+                    _ => (),
+                }
+            }
+        }
+
+        for (_, spritebatch) in self.spritebatches.iter_mut() {
+            graphics::draw(context, spritebatch, DrawParam::default())?;
+            spritebatch.clear();
+        }
+
+        graphics::present(context)?;
+        Ok(())
+    }
+}
+
+fn main() -> GameResult {
+    let conf = Conf::new();
+
+    let (ref mut context, ref mut event_loop) = ContextBuilder::new("pax-romana", "tom barrett")
+        .conf(conf)
+        .add_resource_path("./resources")
+        .build()?;
+
+    let state = &mut State::new(context)?;
+
+    event::run(context, event_loop, state)
+}
-- 
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