confettiHitDetection.js

const COLLIDERS = {
    left: {
        topLeft: [-2, -1],
        bottomRight: [-1, 1],
    },
    right: {
        topLeft: [1, -1],
        bottomRight: [2, 1],
    },
    up: {
        topLeft: [-1, -2],
        bottomRight: [1, -1],
    },
    down: {
        topLeft: [-1, 1],
        bottomRight: [1, 2],
    },
}

const DIRECTIONS = {
    5: 'left',
    6: 'left',
    7: 'right',
    8: 'right',
    4: 'up',
    3: 'up',
    2: 'down',
    1: 'down',
}

checkCol = (player) => {
    const area = COLLIDERS[DIRECTIONS[player.direction]]
    const topLeft = [player.x + area.topLeft[0], player.y + area.topLeft[1]]
    const bottomRight = [
        player.x + area.bottomRight[0],
        player.y + area.bottomRight[1],
    ]
    console.log(area, topLeft, bottomRight)

    const isInsideArea = (somePlayer) =>
        somePlayer.x >= topLeft[0] &&
        somePlayer.y >= topLeft[1] &&
        somePlayer.x <= bottomRight[0] &&
        somePlayer.y <= bottomRight[1]

    const hits = Object.values(game.players).filter(isInsideArea)
    return hits.length ? hits : undefined
}

game.subscribeToEvent('playerShootsConfetti', (data, ctx) => {
    //todo maybe add audio feedback when a player gets hit hehehe(cheering sounds?)
    //todo maybe turn the player hit into a ghost or a zombie for a while

    //idea maybe have some kind of scoring of points
    //idea maybe add an HP system
    //idea maybe turn this into a battle minigame which players can agree to start

    const hits = checkCol(ctx.player)
    console.log(hits)
    if (!hits) return
    game.notify(
        `🎉${hits.length > 1 ? 'Players' : 'Player'} ${hits
            .map((x) => x.name)
            .join(', ')} got HIT with Confetti by player ${ctx.player.name}`
    )
})