Round at draw stage

main.js

@@ -38,7 +38,7 @@ for (let c of [sky, terrain, traces, foreground]) {
 // Init players
 let i=0;
 for (let color of PLAYER_COLORS) {
-  const x = Math.round(50 + (W-100) / 5 * i);
+  const x = 50 + (W-100) / 5 * i;
   const y = landHeight(terrain, x) + 1;
   const a = x > W/2 ? 45 : 180-45;
   players.push({
@@ -152,8 +152,8 @@ function update() {
         PROJECTILE_MIN_SOUND_FREQUENCY
       );
       projectile.t += PROJECTILE_ITERATION_PROGRESS;
-      projectile.x = Math.ceil(x);
-      projectile.y = Math.floor(y);
+      projectile.x = x;
+      projectile.y = y;
       projectile.osc.frequency.setValueAtTime(f, audio.currentTime);
 
       if (projectile.y > H || isTerrain(terrain, projectile.x, projectile.y)) {
@@ -315,8 +315,8 @@ function updateParticles() {
     );
 
     particle.t++;
-    particle.x = Math.round(tx);
-    particle.y = Math.round(ty);
+    particle.x = tx;
+    particle.y = ty;
   }
 }
 
@@ -337,7 +337,7 @@ function drawPlayers() {
     const {x, y, a, c, dead} = player;
     if (dead) continue;
     const [px, py] = vec(x, y-3, a+180, 3);
-    drawLine(foreground, x, y-3, Math.round(px), Math.round(py), c);
+    drawLine(foreground, x, y-3, px, py, c);
     drawRect(foreground, x-4, y-2, 8, 2, c);
     drawRect(foreground, x-3, y-0, 6, 1, c);
   }