add function for minimap

src/engine.rs

@@ -173,7 +173,17 @@ impl Engine {
         }
     }
 
-    pub fn render(&mut self, buffer: &mut Vec<u32>) {
+    fn color_for_tile_pos(&self, pos: &Position) -> u32 {
+        return match pos {
+            p if (p.x.trunc() + p.y.trunc()) % 4.0 == 0.0 => 0x3333ee, //[0.2, 0.2, 0.9, 1.0],
+            p if (p.x.trunc() + p.y.trunc()) % 4.0 == 1.0 => 0x6666ee, //[0.4, 0.4, 0.9, 1.0],
+            p if (p.x.trunc() + p.y.trunc()) % 4.0 == 2.0 => 0x9999ee, //[0.6, 0.6, 0.9, 1.0],
+            p if (p.x.trunc() + p.y.trunc()) % 4.0 == 3.0 => 0xaa55ee, //[0.7, 0.3, 0.9, 1.0],
+            _ => 0xff0000,
+        };
+    }
+
+    pub fn render(&self, buffer: &mut Vec<u32>) {
         let half = buffer.len() / 2;
 
         // Ceiling
@@ -201,13 +211,7 @@ impl Engine {
             let distance = self.player.player_space_distance(pos);
             if tile == Tile::Wall {
                 let wall_height = (self.h / (distance * 3.0)).min(self.h);
-                let wall_color = match pos {
-                    p if (p.x.trunc() + p.y.trunc()) % 4.0 == 0.0 => 0x3333ee, //[0.2, 0.2, 0.9, 1.0],
-                    p if (p.x.trunc() + p.y.trunc()) % 4.0 == 1.0 => 0x6666ee, //[0.4, 0.4, 0.9, 1.0],
-                    p if (p.x.trunc() + p.y.trunc()) % 4.0 == 2.0 => 0x9999ee, //[0.6, 0.6, 0.9, 1.0],
-                    p if (p.x.trunc() + p.y.trunc()) % 4.0 == 3.0 => 0xaa55ee, //[0.7, 0.3, 0.9, 1.0],
-                    _ => 0xff0000,
-                };
+                let wall_color = self.color_for_tile_pos(&pos);
                 println!(
                     "ray: {}, angle: {}, wall at {:?}, distance: {}",
                     n, ray_angle, pos, distance
@@ -226,6 +230,8 @@ impl Engine {
         //std::process::exit(0);
     }
 
+    pub fn render_minimap(&self, framebuffer: &mut Vec<u32>) {}
+
     pub fn load_level(&mut self, level: Level) {
         self.level = level;
     }

src/main.rs

@@ -53,6 +53,7 @@ fn main() {
         // };
 
         engine.render(&mut buffer);
+        engine.render_minimap(&mut buffer);
 
         // if let Some(args) = event.update_args() {
         //     engine.update(args.dt);