For this sample we will be looking at how we can create a countdown timer in order to limit a round and communicate the remaining time to the player. The concept is simple to understand in that we need to start at a set number and then subtract a single value each second. Some things we will have to manage are the counting and also the pausing of the number decremented when it hits the value of zero.

### How to Make a Clock Ticking Down

You need to follow these below mentioned steps to test your animations in a scene:

- Add a
**Math:SetNumber**node and setting the value to**99**. This will be the length of our round. - Add a
**Game:Start**node at the beginning and then hook the number value out of**SetNumber**into the**Show**and**Message**slots of a**Debug:DisplayMessage**node. - Jump into your level (
**Ctrl+G**) and test to see that the value is printed on the top left of the screen. - With the value now printed at
**99**we will begin to add a countdown by first adding a**Time:Timer**node to update each frame (**1**) and a**Math:Counter**node in order to increment the count of a value. - In order to connect the
**SetNumber**and the**Math:Counter**we need to add a**Math:Sub**node and then subtract the**SetNumber**of**99**in the**A**slot and the**Math:Counter**subtracting in the**B**slot. - Complete the checking to see if the counter has reached 0 by checking the
**Counter**through a**Math:Equal**node set to**99**and it connecting to the**Time:Timer Pause**slot when the counter of**99**outputs true. - The last step is simply connecting the
**output**of the**Math:Sub**node into the**DisplayMessage**node in the**Show**and**Message**slots.

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