Crops !

client/systems/clickable_system.ts

@@ -0,0 +1,52 @@
+import { System } from "$/common/ecs/mod.ts";
+import { Position } from "$/common/components/position.ts";
+import { Sprite } from "../components/sprite.ts";
+import { ClientWorld } from "../client_world.ts";
+import { ClickableSprite } from "../components/clickable.ts";
+import { point_inside_rec } from "$/common/utils.ts";
+import { InputManager } from "../input_manager.ts";
+import { Camera, screen_to_world } from "../components/camera.ts";
+
+export class ClickableSystem extends System {
+	update(world: ClientWorld, _delta: number): void {
+		const [player] = world.get_tag("player")!;
+		const camera = player.get(Camera)!;
+
+		const mouse = InputManager.get_mouse_position();
+
+		const world_mouse = screen_to_world(
+			mouse.x,
+			mouse.y,
+			camera,
+			world.canvas.width,
+			world.canvas.height,
+		);
+
+		for (const entity of world.get_entities()) {
+			const position = entity.get(Position);
+
+			if (!position) {
+				continue;
+			}
+
+			const clickable_sprite = entity.get(ClickableSprite);
+			const sprite = entity.get(Sprite);
+
+			if (clickable_sprite && sprite) {
+				clickable_sprite.clicked = false;
+				const hovered = point_inside_rec(
+					world_mouse.x,
+					world_mouse.y,
+					position.x,
+					position.y,
+					sprite.width,
+					sprite.height,
+				);
+				if (hovered && InputManager.is_mouse_pressed(clickable_sprite.button)) {
+					InputManager.consume_mouse(clickable_sprite.button);
+					clickable_sprite.clicked = true;
+				}
+			}
+		}
+	}
+}