feat: primitive styling

client/world/fake_drawer_test.go

@@ -231,10 +231,11 @@ func (d *fakePrimitiveDrawer) CopyShift(dx, dy int) {
 	d.snapshotCommand("CopyShift", float64(dx), float64(dy))
 }
 
-func (d *fakePrimitiveDrawer) ClearAll() {
-	d.snapshotCommand("ClearAll")
+func (d *fakePrimitiveDrawer) ClearAllTo(_ color.Color) {
+	// Store as a command; tests usually only care that it was called.
+	d.snapshotCommand("ClearAllTo")
 }
 
-func (d *fakePrimitiveDrawer) ClearRect(x, y, w, h int) {
-	d.snapshotCommand("ClearRect", float64(x), float64(y), float64(w), float64(h))
+func (d *fakePrimitiveDrawer) ClearRectTo(x, y, w, h int, _ color.Color) {
+	d.snapshotCommand("ClearRectTo", float64(x), float64(y), float64(w), float64(h))
 }