Create a new scene with a Node2D as the root

Rename it to Confetti_Cannon

Add a new GPUParticles2D as a child

Rename it to Blue

In the GPUParticles2D properties

Set emitting to false

Set Amount to 16

Expand the Time property

Turn One Shot On

Set Explosiveness to 0.6

Set Randomness to 0.2

Expand the Drawing property

Set Local Coords to On

This just ensures that the particles

Appear wherever the flag pole is

in the level

Expand the Process Material Property

Add a new ParticleProcessMaterial

Click on the new ParticleProcessMaterial to expand it

Expand the ParticleFlags property

Set Rotate Y to On

Set Disable Z to On

Expand the Spawn property

Expand the Angle property

Set min angle to 209

Set max angle to 327

Expand the Velocity property

Set the direction to X: 0.0, Y: -1.0, Z: 0.0

Set Initial Velocity to min 50.0, max 100.0

Expand Animated Velocity

Expand Angular Velocity

Set Velocity min to 1.0 and max to 5.0

Expand Accelerations

Expand Gravity

Set Gravity to X: 0.0, Y: 98.0, Z: 0.0

Expand Display

Expand Scale

Set the Scale min to 5.0 and max to 10.0

In the Scale Curve property

Add a new CurveTexture

Use a Preset which suits you

Ease-In is good

Still in the Display settings

Expand Color Curves

Pick a Sky Blue color

I chose #6cd9f1

To make different colors of confetti

Duplicate the Blue confetti node

Rename it to Orange

Expand the Process Material property

Right-click on the ProcessMaterial

Select Make Unique

Now click on the ProcessMaterial to expand its properties

Expand the Display property

Expand the Color Curves property

Choose a new color in the Color property

I used f2bc7e for Orange

Add an AudioStreamPlayer node as a child of Confetti_Cannon

Rename it to PopPlayer

This will play the popping sounds

Add a Timer node as a child of Confetti_Cannon

Rename it to PopTimer

This will trigger the pops to play