src/activities/overworld/mod.rs

@@ -1,8 +1,13 @@
 use comfy::{
-	draw_rect_outline, draw_sprite, main_camera_mut, EngineContext, IVec2, Vec2, RED,
+	draw_circle, draw_rect_outline, draw_sprite, main_camera_mut, EngineContext, IVec2,
-	WHITE
+	Vec2, RED, WHITE,
 };
+use log::info;
+use comfy::is_key_pressed;
+use comfy::is_key_down;
+use comfy::KeyCode;
 
+use crate::game::Ghost;
 use crate::game::ZLayer;
 
 pub mod worldgen;
@@ -16,16 +21,54 @@ pub fn draw(state: &crate::State, _engine: &comfy::EngineContext<'_>) {
 				coords.as_vec2(),
 				WHITE,
 				ZLayer::MapMax - i,
-				Vec2::ONE
+				Vec2::ONE,
 			);
 			draw_rect_outline(coords.as_vec2(), Vec2::ONE, 0.1, RED, 10);
 		}
 	}
+	draw_circle(
+		state.ghost.overworld_pos.as_vec2(),
+		0.5,
+		RED,
+		ZLayer::Ghost.into(),
+	);
 }
 
 pub fn update(state: &mut crate::State, _engine: &mut EngineContext<'_>) {
 	let mut camera = main_camera_mut();
 	camera.center = Vec2::ZERO;
 	camera.zoom = 30.0;
-	state.overworld.get_or_generate_tile(IVec2::ZERO);
+
+	let mut ghost_pos = &mut state.ghost.overworld_pos;
+
+	// move player
+	if is_key_down(KeyCode::Up) {
+		ghost_pos.y +=1;
+	}
+	if is_key_down(KeyCode::Down) {
+		ghost_pos.y -=1;
+	}
+	if is_key_down(KeyCode::Left) {
+		ghost_pos.x -=1;
+	}
+	if is_key_down(KeyCode::Right) {
+		ghost_pos.x +=1;
+	}
+
+	// generate more chunks if needed
+	{
+		let half_viewport = (camera.world_viewport() * 0.5 + 3.0).as_ivec2();
+		state
+			.overworld
+			.get_or_generate_tile(*ghost_pos + IVec2::new(half_viewport.x, half_viewport.y));
+		state
+			.overworld
+			.get_or_generate_tile(*ghost_pos + IVec2::new(half_viewport.x, -half_viewport.y));
+		state
+			.overworld
+			.get_or_generate_tile(*ghost_pos + IVec2::new(-half_viewport.x, half_viewport.y));
+		state
+			.overworld
+			.get_or_generate_tile(*ghost_pos + IVec2::new(-half_viewport.x, -half_viewport.y));
+	}
 }

src/activities/overworld/worldgen.rs

@@ -138,7 +138,7 @@ impl Tile {
 
 /// The size of a chunk (both width and height). This value squared gives the amount of
 /// tiles in the chunk.
-const CHUNK_SIZE: u32 = 100;
+const CHUNK_SIZE: u32 = 50;
 
 /// Chunks
 #[derive(Debug)]

src/game.rs

@@ -2,7 +2,7 @@ use crate::{
 	activities::{house, overworld, Activity},
 	State
 };
-use comfy::EngineContext;
+use comfy::{EngineContext, IVec2};
 use std::ops::Sub;
 
 #[derive(Debug)]
@@ -10,14 +10,16 @@ pub struct Ghost {
 	/// current electric charge of the Ghost
 	pub charge: f32,
 	/// max electric charge of the Ghost
-	pub max_charge: f32
+	pub max_charge: f32,
+	pub overworld_pos: IVec2,
 }
 
 impl Default for Ghost {
 	fn default() -> Self {
 		Self {
 			charge: 1000.0,
-			max_charge: 1000.0
+			max_charge: 1000.0,
+			overworld_pos: IVec2::ZERO,
 		}
 	}
 }