src/activities/overworld.rs

@@ -1,9 +1,23 @@
 use comfy::{draw_circle, vec2, EngineContext, GREEN};
 
+use crate::game::ZLayer;
+
 pub mod worldgen;
 
-pub fn draw(_state: &crate::State, _engine: &EngineContext<'_>) {
+pub fn draw(state: &crate::State, _engine: &comfy::EngineContext) {
 	draw_circle(vec2(0.0, 0.0), 0.5, GREEN, 0);
+	for (coords, tile) in state.overworld.iter_tiles() {
+		for (i, texture) in tile.textures.iter().rev().enumerate() {
+			let i = i as i32;
+			draw_sprite(
+				*texture,
+				coords.as_vec2(),
+				Default::default(),
+				ZLayer::MapMax - i,
+				Vec2::ONE
+			)
+		}
+	}
 }
 
 pub fn update(_state: &mut crate::State, _engine: &mut EngineContext<'_>) {}

src/activities/overworld/worldgen.rs

@@ -1,7 +1,8 @@
-use comfy::{IVec2, UVec2};
+use comfy::{IVec2, TextureHandle, UVec2};
+
 use std::collections::HashMap;
 
-enum MovementCost {
+pub enum MovementCost {
 	/// No movement possible - cost infinitely high.
 	Infinite,
 	/// There is a path for this movement - movement is cheap.
@@ -13,7 +14,9 @@ enum MovementCost {
 }
 
 #[derive(Debug)]
-struct Tile;
+pub struct Tile {
+	pub textures: Vec<TextureHandle>
+}
 
 impl Tile {
 	pub fn can_stand_inside(&self) -> bool {

src/game.rs

@@ -1,3 +1,5 @@
+use std::ops::Sub;
+
 use comfy::*;
 
 use crate::{
@@ -5,6 +7,28 @@ use crate::{
 	State
 };
 
+#[repr(i32)]
+pub enum ZLayer {
+	MapMax = -1,
+	Human = 0,
+	Ghost = 1
+}
+
+impl From<ZLayer> for i32 {
+	fn from(value: ZLayer) -> Self {
+		// safe because #[repr(i32)]
+		value as i32
+	}
+}
+
+impl Sub<i32> for ZLayer {
+	type Output = i32;
+
+	fn sub(self, other: i32) -> Self::Output {
+		i32::from(self) - other
+	}
+}
+
 pub fn update(state: &mut State, engine: &mut EngineContext<'_>) {
 	match state.activity {
 		Activity::House => house::update(state, engine),

src/main.rs

@@ -1,3 +1,4 @@
+#[allow(dead_code, unused_variables)]
 #![warn(rust_2018_idioms)]
 #![forbid(clippy::wildcard_imports, elided_lifetimes_in_paths, unsafe_code)]