Ten useful formulas
Copy these into your own games, one number box at a time.
Before you start
Each formula below goes in a number box (or a text box) in a settings dialog. Object names must match yours exactly, in double quotes. The ƒx helper (Advanced and Expert) can insert them for you. If the box turns red, read the sentence under it.
1. A score that shows on screen
"Score: " + Str(Score) in Set the text, in an Always rule. The Score object does this by itself, but this way you choose the words.
2. A dice
Random(6) + 1 gives 1 to 6. Random(6) alone gives 0 to 5.
3. A coin anywhere across the level
Random(FrameWidth) as X (across) in Create an object, with 0 as Y (down). Works whatever the level’s width is.
4. Follow the mouse
Set position with X (across) MouseX and Y (down) MouseY, in an Always rule. The Follows the mouse movement does the same without a rule.
5. Faster every time
Speed("Ball") + 5 in Set speed. Put it on the paddle collision in Chocobreak and the ball speeds up with every hit. Cap it with Min(Speed("Ball") + 5, 80).
6. Points that depend on the clock
Max(100 - Timer / 1000, 10) in Add to score. Timer is in thousandths of a second, so this is 100 minus the seconds so far, never less than 10. Finish fast, score more.
7. Line up with another object
X("Hero") as X (across) in Set position keeps a hat, a shadow or a health bar above the hero. Use Y("Hero") - 40 for the down value.
8. A countdown in words
"Time: " + Str(Floor(60 - Timer / 1000)) counts down from 60 in whole seconds. The Timer display object does this without a formula, with Time runs out when it hits zero.
9. Keys collected across the game
"Keys: " + Str(Global("A")) shows global value A, which keeps its number from level to level. Add 1 to it when a key is picked up. See Global values A to Z.
10. How far the ghost is
Distance(X("Hero"), Y("Hero"), X("Ghost"), Y("Ghost")) < 100 in Compare two values: put the Distance part in First value, choose < less than, and 100 in Second value. The ghost wakes up when you get close.
Two more for Expert mode
Value("Slime", "A") | The picked slime’s own value A, for example its hit points. "HP: " + Str(Value("Hero", "A")) shows the hero’s. |
|---|---|
Flag("Door", 0) | 1 if the door’s switch 0 is on, otherwise 0. Flag("Door", 0) * 10 is 10 points for an open door. |
