parser: deprecate short struct init (#10842)

examples/fireworks/modules/objects/particle.v

@@ -32,5 +32,5 @@ pub fn (mut particle Particle) tick(mut rocket Rocket, mut ctx gg.Context) {
 	particle.pos += particle.vel
 	particle.draw(mut ctx)
 
-	particle.accel = {}
+	particle.accel = Vector{}
 }

examples/fireworks/modules/objects/rocket.v

@@ -39,7 +39,7 @@ pub fn (mut rocket Rocket) tick(mut ctx gg.Context) {
 		rocket.pos += rocket.vel
 		rocket.draw(mut ctx)
 
-		rocket.accel = {}
+		rocket.accel = Vector{}
 	}
 
 	for mut particle in rocket.particles {
@@ -50,10 +50,10 @@ pub fn (mut rocket Rocket) tick(mut ctx gg.Context) {
 pub fn new_rocket() Rocket {
 	return Rocket{
 		color: random_color()
-		pos: {
+		pos: Vector{
 			x: rand.f32_in_range(50, get_params().width - 50)
 		}
-		vel: {
+		vel: Vector{
 			x: rand.f32_in_range(-1.5, 1.5)
 			y: rand.f32_in_range(5, 7)
 		}

examples/fireworks/modules/objects/vector.v

@@ -21,7 +21,7 @@ pub fn random_vector_in_circle() Vector {
 	theta := rand.f32n(2 * math.pi)
 	y := rand.f32()
 
-	return {
+	return Vector{
 		x: f32(y * math.sin(theta))
 		y: f32(y * math.cos(theta))
 	}