Game Programming using Qt 5 Beginner's Guide - Second Edition

Time for action – Vanishing coins spawning particles

It is now time to practice our freshly acquired skills. The task is to add a particle effect to the game we created in the previous chapter. When the player collects a coin, it will explode into a sprinkle of colorful stars.

Start by declaring a particle system as filling the game scene, along with the particle painter definition:

ParticleSystem {    id: coinParticles    anchors.fill: parent // scene is the parent        ImageParticle {        source: "images/particle.png"        colorVariation: 1        rotationVariation: 180        rotationVelocityVariation: 10    }} 

Next, modify the definition of Coin to include an emitter:

Emitter {    id: emitter    system: coinParticles    emitRate: 0    lifeSpan: 1500    lifeSpanVariation: 100 velocity: ...