activating shader

src/activities/house/magnet-shader.wgsl

@@ -0,0 +1,5 @@
+@fragment
+fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
+    let global_coord: vec3<f32> = in.world_position;
+    return vec4(in.color[3],in.color[3],in.color[3], in.color[3]);
+}

src/activities/house/mod.rs

@@ -41,18 +41,19 @@ impl HouseState {
 	}
 }
 
-pub fn draw(state: &crate::State, _ctx: &comfy::EngineContext<'_>) {
+pub fn draw(state: &crate::State, _ctx: &mut comfy::EngineContext<'_>) {
 	let Some(house) = state.house() else {
 		error!("How can I render a house when I'm not in one?!?");
 		return;
 	};
 
 	//Draw House
-	house
-		.rooms
-		.get(house.current_room_id)
-		.unwrap()
-		.draw(house.human_layer, house.player.can_see_metal(0.1));
+	house.rooms.get(house.current_room_id).unwrap().draw(
+		house.human_layer,
+		house.player.can_see_metal(0.1),
+		house.player.get_position(),
+		_ctx
+	);
 
 	//Draw Grid
 	//state.house.grid.draw();

src/activities/house/player.rs

@@ -32,6 +32,9 @@ impl Player {
 		}
 	}
 
+	pub fn get_position(&self) -> Vec2 {
+		self.position
+	}
 	pub fn draw(&self) {
 		draw_circle(self.position, 0.5, RED, 0);
 	}

src/activities/house/room.rs

@@ -1,7 +1,7 @@
 use super::{furniture::Furniture, grid::Grid};
 use crate::game;
 use comfy::{
-	draw_rect, draw_rect_outline, draw_sprite, error, random_i32, vec2, EngineContext, HashSet, Index, RandomRange as _, Vec2, GREEN, PURPLE, RED, WHITE
+	create_reloadable_sprite_shader, draw_rect, draw_rect_outline, draw_sprite, error, hashmap, random_i32, set_uniform_f32, use_default_shader, use_shader, vec2, EngineContext, HashSet, Index, RandomRange as _, ReloadableShaderSource, UniformDef, Vec2, GREEN, PURPLE, RED, WHITE
 };
 use indexmap::IndexSet;
 
@@ -88,7 +88,10 @@ impl Room {
 			empty_spots.swap_remove_index(random_idx)
 		}
 
-		fn random_empty_spot_size(empty_spots: &mut IndexSet<u8>, size: u8) -> Option<u8> {
+		fn random_empty_spot_size(
+			empty_spots: &mut IndexSet<u8>,
+			size: u8
+		) -> Option<u8> {
 			let mut empty_spots_size = IndexSet::<u8>::new();
 
 			for &index in empty_spots.iter() {
@@ -281,7 +284,8 @@ impl Room {
 				}
 			},
 
-			RoomType::LivingRoom => {
+			_ => {
+				//RoomType::LivingRoom => {
 				let has_couch = match u8::gen_range(0, 2) {
 					0 => false,
 					1 => true,
@@ -296,7 +300,6 @@ impl Room {
 							z: 0
 						});
 					}
-					
 				}
 
 				if let Some(pos) = random_empty_spot(&mut empty_spots) {
@@ -316,10 +319,8 @@ impl Room {
 						z: 0
 					});
 				}
-				
-			},
-
-			_ => {}
+			}
+			//_ => {}
 		}
 
 		furnitures
@@ -375,7 +376,13 @@ impl Room {
 		Grid::new(nodes, connections)
 	}
 
-	pub fn draw(&self, human_layer: bool, magnet_layer: bool) {
+	pub fn draw(
+		&self,
+		human_layer: bool,
+		magnet_layer: bool,
+		position: Vec2,
+		_ctx: &mut comfy::EngineContext<'_>
+	) {
 		let (width, height) = self.size;
 
 		draw_rect(
@@ -416,7 +423,27 @@ impl Room {
 				}
 			}
 
-			if magnet_layer {
+			if true {
+				let magnet_shader_id = Some(
+					create_reloadable_sprite_shader(
+						&mut _ctx.renderer.shaders.borrow_mut(),
+						"magnet-shader",
+						ReloadableShaderSource {
+							static_source: include_str!("magnet-shader.wgsl").to_string(),
+							path: "src/activities/house/magnet-shader.wgsl".to_string()
+						},
+						hashmap! {
+							// "px".to_string() => UniformDef::F32(None),
+							// "py".to_string() => UniformDef::F32(None),
+						}
+					)
+					.unwrap()
+				).unwrap();
+
+				use_shader(magnet_shader_id);
+				// set_uniform_f32("px", position.x);
+				// set_uniform_f32("py", position.y);
+
 				if let Some(texture) = tile.f.get_magnet_texture_handle() {
 					draw_sprite(
 						texture,
@@ -426,6 +453,7 @@ impl Room {
 						tile.size * SCALE
 					);
 				}
+				use_default_shader();
 			}
 
 			if tile.f.is_on() {

src/game.rs

@@ -103,7 +103,7 @@ pub fn update(state: &mut State, engine: &mut EngineContext<'_>) {
 	}
 }
 
-pub fn draw(state: &State, engine: &EngineContext<'_>) {
+pub fn draw(state: &State, engine: &mut EngineContext<'_>) {
 	match state.activity {
 		Activity::House(_) => house::draw(state, engine),
 		Activity::Overworld => overworld::draw(state, engine)