-- bring in the util module
local util = require("util")

local entities = {}

-- initialize the entities table
function entities.init()
    entities.staticEntities = {}
    entities.dynamicEntities = {}
end

-- load all sprites to memory
function entities.loadSprites()
    entities.sprites = {}
    entities.sprites.town = love.graphics.newImage("img/building.png")
end

-- create a new static entity that will always align with the map grid
function entities.newStatic(x, y, z, type)
    local static = {}
    static.x = x
    static.y = y
    static.z = z 
    static.type = type

    table.insert(entities.staticEntities, static)
end

-- render all entities
function entities.render(offset)
    -- render static entities
    for _, entity in ipairs(entities.staticEntities) do
        local type = entity.type
        local loc = util.cartToIso({x = entity.x, y = entity.y})

        if type == "town" then
            image = entities.sprites.town
        end

        if image ~= nil then
            love.graphics.draw(image, loc.x * 16 + offset.x, loc.y * 16 + offset.y - entity.z * 16)
        end
    end

end

return entities