我如何让实体播放器在按下Up或W时跳转，我搜索和搜索但是没有看到任何方法可以使用我的代码。目前，当按下向上或向上时，角色只是上升而其保持没有边界并且不会下降。这就是我到目前为止所得到的：
function love.load() -- On game load
love.mouse.setVisible(false) -- Makes cursor invisible
imageCloud = love.graphics.newImage("textures/cloud.png") -- Loading cloud image
imageCloud2 = love.graphics.newImage("textures/cloud.png") -- Loading cloud image
imageCloud3 = love.graphics.newImage("textures/cloud.png") -- Loading cloud image
imageBg = love.graphics.newImage("textures/background.png") -- Loading background image
imageMountains = love.graphics.newImage("textures/mountains.png") -- Loading mountains image
imageSky = love.graphics.newImage("textures/sky.jpg") -- Loading mountains image
imageGround = love.graphics.newImage("textures/ground.png") -- Loading ground image
playerleft = love.graphics.newImage("textures/playerleft.png") -- Loading player left
playerright = love.graphics.newImage("textures/playerright.png") -- Loading player right
playershoot = love.graphics.newImage("textures/playershoot.png") -- Loading player shoot
love.graphics.setBackgroundColor( 0, 128, 255 ) -- Color for background
print("Zonisto started succesfully") -- Console text for game starting up
player = playerright -- Sets player to start in right position
xCloud1 = 0 -- Sets Cloud1's starting position
xCloud2 = 45 -- Sets Cloud2's starting position
xCloud3 = 160 -- Sets Cloud3's starting position
xPlayer = 0 -- Sets Player's starting position
playery = 390 -- Sets Player's starting height
shootsound = love.audio.newSource("sounds/shoot.wav", "static") -- Loads shooting sound
jumpsound = love.audio.newSource("sounds/jump.mp3", "static") -- Loads shooting sound
theme = love.audio.newSource("sounds/theme.mp3") -- Loads theme music
love.audio.play(theme) --Plays theme music
theme:setVolume(0.1) -- Sets theme music to 10%
end
function love.draw() -- On frame refresh
local x = love.mouse.getX( ) -- Getting x position for cursor follower
local y = love.mouse.getY( ) -- Getting y position for cursor follower
--Sky start
love.graphics.setColor( 255, 255, 255, 255 ) -- Sets transparency for Mountains
love.graphics.draw( imageSky, 0, 0, 0, 1, 1, 0, 0) -- Mountains image
--Sky end
--Mountains start
love.graphics.setColor( 255, 255, 255, 255 ) -- Sets transparency for Mountains
love.graphics.draw( imageMountains, 0, 300, 0, 1, 1, 0, 0) -- Mountains image
--Mountains end
--Version area start
love.graphics.setColor( 255, 255, 255, 100 ) -- Color for Version box
love.graphics.rectangle( "fill", 0, 0, 165, 15 ) -- Shape for Version box
love.graphics.setColor( 0, 128, 255, 255 ) -- Color for Version text
love.graphics.print( "Zonisto: Pre-Alpha V0.001", 1, 1, 0, 1, 1 ) -- Version text
--Version area end
--Ground start
love.graphics.setColor( 255, 255, 255, 255 ) -- Sets transparency for Ground
love.graphics.draw( imageGround, 0, 500, 0, 1, 1, 0, 0) -- Ground image
--Ground end
--Player start
love.graphics.setColor( 255, 255, 255, 255 ) -- Sets transparency for Player
love.graphics.draw( player, xPlayer, playery, 0, 1, 1, 0, 0) -- Player image
--Player end
--Cloud1 start
love.graphics.setColor( 255, 255, 255, 255 ) -- Sets transparency for Cloud1
love.graphics.draw( imageCloud, xCloud1 - 256, 40, 0, 1, 1, 0, 0) -- Cloud1 image
if xCloud1 >= 1050 then -- Detects when cloud1 surpasses boundaries
xCloud1 = 0 -- Sets position for cloud1 to return to
end
--Cloud1 end
--Cloud2 start
love.graphics.setColor( 255, 255, 255, 95 ) -- Sets transparency for Cloud2
love.graphics.draw( imageCloud2, xCloud2 - 456, 90, 0, 1, 1, 0, 0) -- Cloud2 image
if xCloud2 >= 1050 then -- Detects when cloud2 surpasses boundaries
xCloud2 = 0 -- Sets position for cloud2 to return to
end
--Cloud2 end
--Cloud3 start
love.graphics.setColor( 255, 255, 255, 155 ) -- Sets transparency for Cloud1
love.graphics.draw( imageCloud3, xCloud3 - 356, 40, 0, 1, 1, 0, 0) -- Cloud1 image
if xCloud3 >= 1050 then -- Detects when cloud3 surpasses boundaries
xCloud3 = 0 -- Sets position for cloud3 to return to
end
--Cloud3 end
--Cursor start
love.graphics.setColor( 255, 255, 255, 205 ) -- Color for cursor follower
love.graphics.circle( "fill", x, y, 8, 8) -- Shape for cursor follower
--Cursor end
end
function love.update(dt) -- On frame update
xCloud1 = xCloud1 + 32*dt -- Cloud movement
xCloud2 = xCloud2 + 15*dt -- Cloud movement
xCloud3 = xCloud3 + 48*dt -- Cloud movement
if love.keyboard.isDown("a") then -- Detects if a is being pressed
player = playerleft -- Changes image to left view
elseif love.keyboard.isDown("d") then -- Detects if d is being pressed
player = playerright -- Changes image to right view
end
if love.keyboard.isDown("left") then -- Detects if left is being pressed
player = playerleft -- Changes image to left view
elseif love.keyboard.isDown("right") then -- Detects if right is being pressed
player = playerright -- Changes image to right view
elseif love.keyboard.isDown("kpenter") then -- Detects if key pad enter is being pressed
player = playershoot -- Changes to shooting view
love.audio.play(shootsound) -- Plays shooting sound
elseif love.keyboard.isDown("enter") then -- Detects if enter is being pressed
player = playershoot -- Changes to shooting view
love.audio.play(shootsound) -- Plays shooting sound
elseif love.keyboard.isDown("return") then -- Detects if return is being pressed
player = playershoot -- Changes to shooting view
love.audio.play(shootsound) -- Plays shooting sound
end
if love.keyboard.isDown("up") then -- Detects if up is being pressed
playery = playery - 300 * dt
love.audio.play(jumpsound) -- Plays jumping sound
elseif love.keyboard.isDown("w") then -- Detects if w is being pressed
love.audio.play(jumpsound) -- Plays jumping sound
end
if love.keyboard.isDown("right") then -- Detects if right is pressed
print("Moving right") -- Prints in console that player is being moved right
xPlayer = xPlayer + 48*dt -- Sets timing for amount the player moves
end
if love.keyboard.isDown("left") then -- Detects if left is pressed
print("Moving left") -- Prints in console that player is being moved left
xPlayer = xPlayer + -48*dt -- Sets timing for amount the player moves
end
if love.keyboard.isDown("d") then -- Detects if d is being presssed
print("Moving right") -- Prints in console that player is being moved right
xPlayer = xPlayer + 48*dt -- Sets timing for amount the player moves
end
if love.keyboard.isDown("a") then -- Detects if a is being pressed
print("Moving left") -- Prints in console that player is being moved left
xPlayer = xPlayer + -48*dt -- Sets timing for amount the player moves
end
end
function love.focus(bool) -- On game focus/unfocus
if bool then
print("Game focused") -- Console text for game being focused on
else
print("Game not focused") -- Console text for game not being focused on
end
end
function love.keypressed( key, unicode ) -- On key press
print ("Input pressed: " .. key) -- Console text for key being pressed
end
function love.keyreleased( key, unicode ) -- On key release
print ("Input released: " .. key) -- Console text for key being released
end
function love.mousepressed( x, y, button ) -- On mouse press
print ("Mouse pressed: " .. x, y, button) -- Console text for mouse being pressed
end
function love.mousereleased( x, y, button ) -- On mouse release
print ("Mouse released: " .. x, y, button) -- Console text for mouse being released
end
function love.quit() -- On game exit
print ("Exiting Zonisto... goodbye!") -- Console text for game closing
end
答案 0 :(得分：1)
你在这里说的是：
if love.keyboard.isDown("up") then
playery = playery - 300 * dt
love.audio.play(jumpsound) -- Plays jumping sound
elseif love.keyboard.isDown("w") then -- Detects if w is being pressed
love.audio.play(jumpsound) -- Plays jumping sound
end
如果 ， 仅在 w或更高时按下，请向上移动播放器。你需要做的是创建一个函数，比如这个
function love.load()
--rest of code
playerCanJump = true
end
if love.keyboard.isDown("up") and playerCanJump then -- Detects if up is being pressed
jy = playery
playerJump()
elseif love.keyboard.isDown("w") and playerCanJump then -- Detects if w is being pressed
jy = playery
playerJump()
end
function playerJump()
local dt = love.timer.getDelta()
playerCanJump = false
playery = playery - 300 * dt
love.audio.play(jumpsound)
end
我会留下这个作业：让它在跳跃一定高度后跌倒。 提示：它使用jy变量 对不起，如果代码看起来很混乱，我试着用你的风格编码，但我觉得我有点失败......