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self.player:update(dt)

for i = #self.entities, 1, -1 do
    local entity = self.entities[i]

    -- if entity is dead, skip the next code block
    if not entity.dead then
        -- if entity has been just defeated
        if entity.health <= 0 then
            -- mark entity as dead
            entity.dead = true
            -- spawn a heart with 10% probability
            if math.random(10) <= 7 then
                self:spawnHeart(entity.x, entity.y)
            end
        -- if entity has not been defeated yet
        else 
            entity:processAI({room = self}, dt)
            entity:update(dt)
        end

        -- collision between the player and entities in the room
        if self.player:collides(entity) and not self.player.invulnerable then
            gSounds['hit-player']:play()
            self.player:damage(1)
            self.player:goInvulnerable(1.5)

            if self.player.health == 0 then
                gStateMachine:change('game-over')
            end
        end
    end
end

    -- trigger collision callback on object
    if self.player:collides(object) then
        if object.type == 'heart' then
            Event.dispatch('heartCollected')
        end
        object:onCollide()
        if object.consumable then
            table.remove(self.objects, k)
        end
    end

    if object.type == 'pot' and object.state == 'thrown' then
        -- wall collision check
        if self:wallsCollideWith(object) then
            table.remove(self.objects, k)
        end

        -- for each entity (enemy)
        for i = #self.entities, 1, -1 do
            local entity = self.entities[i]
            -- if entity is dead, skip the next code block
            if not entity.dead then
                if entity:collides(object) then
                    -- pot collided with enemy, so deal damage
                    entity:damage(1)
                    -- and destroy the pot, removing it from the objects table
                    table.remove(self.objects, k)
                end
            end     
        end
        
        if object.type == 'pot' and object.state == 'idle' and distance == true then
            table.remove(self.objects, k)
        end
    end
end
Timer.update(dt)