This Defold native extension implements a seeded psuedo-random number generator using the Mulberry32 method.
-- Set the seed. Must be an integer.
prng.set_seed(12345)
-- Generate a random float between 0 and 1.
local randomFloat = prng.rand_float()
-- Generate a random integer between 0 and the maximum you provide.
local randomInt = prng.rand_int(5)
-- Flips a coin. Returns 0 or 1.
local coinFlip = prng.coin()
-- Get a card suit. Returns 0, 1, 2, or 3.
local randomCardSuit = prng.suit()
-- Roll one or more dice.
local dice = prng.dice(1, 8)
-- Rolls twice and takes the higher result. More likely to return 1 than 0.
local success = prng.advantage()
-- Rolls twice and takes the lower result. More likely to return 0 than 1.
local success = prng.disadvantage()
- Edit game.project
- Add dependency
https://github.com/thinknathan/defold-prng/archive/main.zip
for the current version- Or add a specific release
This extension includes types for use with TypeScript + Defold.
- Install these types
yarn add git+https://[email protected]/thinknathan/defold-prng.git#^1.0.0 -D
# or
npm install git+https://[email protected]/thinknathan/defold-prng.git#^1.0.0 --save-dev
- Add
defold-prng
totypes
intsconfig.json
{
"compilerOptions": {
"types": [
+ "defold-prng",
],
}
}
- Add
node_modules/@types
totypeRoots
intsconfig.json
if it's not already there
{
"compilerOptions": {
"typeRoots": [
+ "node_modules/@types",
],
}
}
See SplitMix64, PCG Random and rand16. Compare PRNG implementations.