controller.script

go.property("speed", 6)

local grid = 460
local platform_heights = { 100, 200, 350 }
local coins = 3

function init(self)
    self.gridw = 0
    self.spawns = {}
end

function update(self, dt)
    self.gridw = self.gridw + self.speed

    if self.gridw >= grid then
        self.gridw = 0

        -- Maybe spawn a platform at random height
        if math.random() > 0.2 then
            local h = platform_heights[math.random(#platform_heights)]
            local f = "#platform_factory"
            local coins = coins
            if math.random() > 0.5 then
               f = "#platform_long_factory"
               coins = coins * 2 -- Twice the number of coins on long platforms
            end

            local p = factory.create(f, vmath.vector3(1600, h, 0), nil, {}, 0.6)
            msg.post(p, "set_speed", { speed = self.speed })
            msg.post(p, "create_coins", { coins = coins })
            table.insert(self.spawns, p)
        end
    end
end

function on_message(self, message_id, message, sender)
    if message_id == hash("reset") then
        -- Tell the hero to reset.
        msg.post("hero#script", "reset")
        -- Delete all platforms
        for i,p in ipairs(self.spawns) do
            go.delete(p)
        end
        self.spawns = {}
    elseif message_id == hash("delete_spawn") then
        for i,p in ipairs(self.spawns) do
            if p == message.id then
                table.remove(self.spawns, i)
                go.delete(p)
            end
        end
    end
end