1 files changed, 12 insertions(+), 3 deletions(-)

M client/src/rendering/renderer.rs

@@ 2,7 2,7 @@ use std::error::Error;
 use async_trait::async_trait;
 use web_sys::{CanvasRenderingContext2d, HtmlCanvasElement};
 use crate::rendering::Renderer;
-use wasm_bindgen::JsCast;
+use wasm_bindgen::{JsCast, JsValue};
 use crate::CLIENT;
 
 #[derive(Debug)]


@@ 25,8 25,17 @@ impl Renderer for WebRenderer {
         let document = window.document().ok_or("window.document needs to exist")?;
         let canvas_element = document.get_element_by_id(&self.canvas_element_id).ok_or("canvas element does not exist")?;
         let typed_canvas_element: HtmlCanvasElement = canvas_element.dyn_into::<web_sys::HtmlCanvasElement>().map_err(|_| ()).unwrap();
-        let _context = typed_canvas_element.get_context("2d").unwrap().unwrap().dyn_into::<CanvasRenderingContext2d>().unwrap();
-        let _client = CLIENT.read()?;
+        let context = typed_canvas_element.get_context("2d").unwrap().unwrap().dyn_into::<CanvasRenderingContext2d>().unwrap();
+        let client = CLIENT.read()?;
+
+        context.set_transform(1f64, 0f64, 0f64, 1f64, 0f64, 0f64).map_err(|e: JsValue| e.as_string().unwrap())?;
+        context.clear_rect(0f64, 0f64, typed_canvas_element.width() as f64, typed_canvas_element.height() as f64);
+
+        let camera_translate_x = -client.x + (typed_canvas_element.width() / 2) as f64;
+        let camera_translate_y = -client.y + (typed_canvas_element.height() / 2) as f64;
+
+        context.translate(camera_translate_x, camera_translate_y).map_err(|e: JsValue| e.as_string().unwrap())?;
+
         Ok(())
     }
 }=
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