import { getMap, getItemKey } from "../map.js"
import { GameState, Map, Player } from "../types.js"

const ceilHalf = (n: number): number => {
    return Math.ceil(n*2)/2
}

const floorHalf = (n: number): number => {
    return Math.floor(n*2)/2
}

const eatItems = (data: GameState, map: Map, player: Player) => {

    let pos = player.pos
    
    for (let x = ceilHalf(pos.x-.5); x <= floorHalf(pos.x+.5); x += .5) {
        for (let y = ceilHalf(pos.y-.5); y <= floorHalf(pos.y+.5); y += .5) {
            let item_key = getItemKey(x, y, map.width)
            delete data.items[item_key]
        }
    }
}

export const updateItems = (data: GameState) => {

    let map = getMap(data.mapId)
    if (!map) return

	for(const id in data.input) {

        const player = data.players[id]
		
        if(!player) {
			continue;
		}

        eatItems(data, map, player)

    }

}