Difference between revisions of "love.keyboard.isDown"
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=== Increase a value while a key is held down === | === Increase a value while a key is held down === | ||
<source lang="lua"> | <source lang="lua"> | ||
− | val = 0 | + | local val = 0; |
function love.update(dt) | function love.update(dt) | ||
− | + | -- We will increase the variable by 1 for every second the key is held down. | |
− | + | if love.keyboard.isDown("up") then | |
− | + | val = val + dt; | |
+ | print(val); | ||
+ | end | ||
+ | |||
+ | -- We will decrease the variable by 1/s if any of the wasd keys is pressed. | ||
+ | if love.keyboard.isDown('w', 'a', 's', 'd') then | ||
+ | val = val - dt; | ||
+ | print(val); | ||
+ | end | ||
end | end | ||
</source> | </source> |
Revision as of 02:31, 26 October 2014
Checks whether a certain key is down. Not to be confused with love.keypressed or love.keyreleased.
Contents
Function
Synopsis
down = love.keyboard.isDown( key )
Arguments
KeyConstant key
- The key to check.
Returns
boolean down
- True if the key is down, false if not.
Function
Available since LÖVE 0.7.2 |
This variant is not supported in earlier versions. |
Synopsis
anyDown = love.keyboard.isDown( key1, key2, key3, ... )
Arguments
KeyConstant keyN
- A key to check.
Returns
boolean anyDown
- True if any supplied key is down, false if not.
Examples
Increase a value while a key is held down
local val = 0;
function love.update(dt)
-- We will increase the variable by 1 for every second the key is held down.
if love.keyboard.isDown("up") then
val = val + dt;
print(val);
end
-- We will decrease the variable by 1/s if any of the wasd keys is pressed.
if love.keyboard.isDown('w', 'a', 's', 'd') then
val = val - dt;
print(val);
end
end
See Also
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