hello
i was facing the error in this line 54
– Change the center point to bottom left
screenText:setReferencePoint(display.BottomLeftReferencePoint);
– Place the text on screen
screenText.x = _W / 2 - 210;
screenText.y = _H - 20;
and its saying cannot implement in 1.0 something like that instead of that use anchorpoint
any solutions please i have also updated main file in the form off text
setReferencePoint has been outdated
Use anchor points instead
screenText.anchorX = 0
screenText.anchorY = 0
this will place your reference point to top left
if you want bottom left, then :
screenText.anchorX = 0
screenText.anchorY = 1
https://coronalabs.com/blog/2013/10/15/tutorial-anchor-points-in-graphics-2-0/
Can u please help me out ??? Where all I need to do replace ??? With reference to the attached file…
Instead of: (in other words remove this line)
screenText:setReferencePoint(display.BottomLeftReferencePoint);
and in its place write:
screenText.anchorX = 0 -- 0 is left, 0.5 is center, 1 is right screenText.anchorY = 1 -- 0 is top, 0.5 is center, 1 is bottom
But you need to understand what this is about. In Corona all display objects are basically rectangles. While circles and lines are not rectangles, they still have a bounding box making them a virtual rectangle.
By default Corona SDK with Graphics 2.0 (today’s standard) every display object if you don’t make changes, has their .x and .y mean the center of the object. That is you position everything by its center. In really old version of Corona SDK, what we call Graphics 1. Some objects were positioned assuming .x and .y were the top left corner of the rectangle. Others were centered. There was no consistency.
In both cases, Graphics 1 and today’s Graphics 2, we allowed you to change the rules on where an object was drawn. Graphics one used :setReferencePoint() and you could provide 9 basic locations like display.TopCenterReferencePoint or in your example display.BottomLeftReferencePoint. If you set .x and .y to 100 and 100, the bottom left point of the box would be at 100, 100.
Graphics 2.0 got rid of ReferencePoints and introduced .anchorPoints (.anchorX and .anchorY). By setting these to a value between 0 and 1 you could put the .x and .y value to be any where within the bounding box and a later update allows for negative numbers and numbers greater than one that lets you put the .x and .y outside the box.
Why would you want to do this? If you’re creating a bunch of display.newTextObjects and you want them all to left-align you can change the .anchorX to 0 and now they will all align nicely. Want to position something at the bottom of the screen?
object.y = display.actualContentHeight
object.anchorY = 1
Rob
still the error is their in 146 line
as setanchopoint(nil)
– Hide status bar
display.setStatusBar(display.HiddenStatusBar);
– Display a background image
–[[ Here we are inserting
a background image of clouds --]]
local background = display.newImage(“images/clouds.png”);
– Generate Physics Engine
local physics = require(“physics”);
– 1. Enable drawing mode for testing, you can use “normal”, “debug” or “hybrid”
physics.setDrawMode(“normal”)
– 2. Enable multitouch so more than 1 balloon can be touched at a time
system.activate(“multitouch”);
– 3. Find device display height and width
_H = display.contentHeight;
_W = display.contentWidth;
– 4. Number of balloons variable
balloons = 0;
– 5. How many balloons do we start with?
numBalloons = 100;
– 6. Game time in seconds that we’ll count down
startTime = 20;
– 7. Total amount of time
totalTime = 20;
– 8. Is there any time left?
timeLeft = true;
– 9. Ready to play?
playerReady = false;
– 10. Generate math equation for randomization
Random = math.random;
– 11. Load background music
local music = audio.loadStream(“sounds/music.mp3”);
– 12. Load balloon pop sound effect
local balloonPop = audio.loadSound(“sounds/balloonPop.mp3”);
– Create a new text field using native device font
local screenText = display.newText("…Loading Balloons…", 0, 0, native.systemFont, 16*2);
screenText.xScale = 0.5
screenText.yScale = 0.5;
– Change the center point to bottom left
screenText.anchorX = 0
screenText.anchorY = 0
– Place the text on screen
screenText.x = _W / 2 - 210;
screenText.y = _H - 20;
– Create a new text field to display the timer
local timeText = display.newText("Time: "…startTime, 0, 0, native.systemFont, 16*2);
screenText.anchorX = 0.5
screenText.anchorY = 0.5;
timeText.x = _W / 2;
timeText.y = _H - 20;
local gameTimer;
– Did the player win or lose the game?
local function gameOver(condition)
– If the player pops all of the balloons they win
if (condition == “winner”) then
screenText.text = “Amazing!”;
– If the player pops 70 or more balloons they did okay
elseif (condition == “notbad”) then
screenText.text = “Not too shabby.”
– If the player pops less than 70 balloons they didn’t do so well
elseif (condition == “loser”) then
screenText.text = “You can do better.”;
end
end
– Remove balloons when touched and free up the memory they once used
local function removeBalloons(obj)
obj:removeSelf();
– Subtract a balloon for each pop
balloons = balloons - 1;
– If time isn’t up then play the game
if (timeLeft ~= false) then
– If all balloons were popped
if (balloons == 0) then
timer.cancel(gameTimer);
gameOver(“winner”)
elseif (balloons <= 30) then
gameOver(“notbad”);
elseif (balloons >=31) then
gameOver(“loser”);
end
end
end
local function countDown(e)
– When the game loads, the player is ready to play
if (startTime == totalTime) then
– Loop background music
audio.play(music, {loops =- 1});
playerReady = true;
screenText.text = “Hurry!”
end
– Subtract a second from start time
startTime = startTime - 1;
timeText.text = "Time: "…startTime;
– If remaining time is 0, then timeLeft is false
if (startTime == 0) then
timeLeft = false;
end
end
– 1. Start the physics engine
physics.start()
– 2. Set gravity to be inverted
physics.setGravity(0, -0.4)
–[[ Create “walls” on the left, right and ceiling to keep balloon on screen
display.newRect(x coordinate, y coordinate, x thickness, y thickness)
So the walls will be 1 pixel thick and as tall as the stage
The ceiling will be 1 pixel thick and as wide as the stage
–]]
local leftWall = display.newRect (0, 0, 1, display.contentHeight);
local rightWall = display.newRect (display.contentWidth, 0, 1, display.contentHeight);
local ceiling = display.newRect (0, 0, display.contentWidth, 1);
– Add physics to the walls. They will not move so they will be “static”
physics.addBody (leftWall, “static”, { bounce = 0.1 } );
physics.addBody (rightWall, “static”, { bounce = 0.1 } );
physics.addBody (ceiling, “static”, { bounce = 0.1 } );
local function startGame()
– 3. Create a balloon, 25 pixels by 25 pixels
local myBalloon = display.newImageRect(“images/balloon.png”, 25, 25);
– 4. Set the reference point to the center of the image
myBalloon:setanchorpoint(display.CenterReferencePoint);
– 5. Generate balloons randomly on the X-coordinate
myBalloon.x = Random(50, _W-50);
– 6. Generate balloons 10 pixels off screen on the Y-Coordinate
myBalloon.y = (_H+10);
– 7. Apply physics engine to the balloons, set density, friction, bounce and radius
physics.addBody(myBalloon, “dynamic”, {density=0.1, friction=0.0, bounce=0.9, radius=10});
– Allow the user to touch the balloons
function myBalloon:touch(e)
– If time isn’t up then play the game
if (timeLeft ~= false) then
– If the player is ready to play, then allow the balloons to be popped
if (playerReady == true) then
if (e.phase == “ended”) then
– Play pop sound
audio.play(balloonPop);
– Remove the balloons from screen and memory
removeBalloons(self);
end
end
end
end
– Increment the balloons variable by 1 for each balloon created
balloons = balloons + 1;
– Add event listener to balloon
myBalloon:addEventListener(“touch”, myBalloon);
– If all balloons are present, start timer for totalTime (10 sec)
if (balloons == numBalloons) then
gameTimer = timer.performWithDelay(1000, countDown, totalTime);
else
– Make sure timer won’t start until all balloons are loaded
playerReady = false;
end
end
– 8. Create a timer for the game at 20 milliseconds, spawn balloons up to the number we set numBalloons
gameTimer = timer.performWithDelay(20, startGame, numBalloons);
“setanchorpoint” is not a valid command. That is why it comes up as ‘nil’. The answers are already in the posts above, so make sure you read them carefully!
setReferencePoint has been outdated
Use anchor points instead
screenText.anchorX = 0
screenText.anchorY = 0
this will place your reference point to top left
if you want bottom left, then :
screenText.anchorX = 0
screenText.anchorY = 1
https://coronalabs.com/blog/2013/10/15/tutorial-anchor-points-in-graphics-2-0/
Can u please help me out ??? Where all I need to do replace ??? With reference to the attached file…
Instead of: (in other words remove this line)
screenText:setReferencePoint(display.BottomLeftReferencePoint);
and in its place write:
screenText.anchorX = 0 -- 0 is left, 0.5 is center, 1 is right screenText.anchorY = 1 -- 0 is top, 0.5 is center, 1 is bottom
But you need to understand what this is about. In Corona all display objects are basically rectangles. While circles and lines are not rectangles, they still have a bounding box making them a virtual rectangle.
By default Corona SDK with Graphics 2.0 (today’s standard) every display object if you don’t make changes, has their .x and .y mean the center of the object. That is you position everything by its center. In really old version of Corona SDK, what we call Graphics 1. Some objects were positioned assuming .x and .y were the top left corner of the rectangle. Others were centered. There was no consistency.
In both cases, Graphics 1 and today’s Graphics 2, we allowed you to change the rules on where an object was drawn. Graphics one used :setReferencePoint() and you could provide 9 basic locations like display.TopCenterReferencePoint or in your example display.BottomLeftReferencePoint. If you set .x and .y to 100 and 100, the bottom left point of the box would be at 100, 100.
Graphics 2.0 got rid of ReferencePoints and introduced .anchorPoints (.anchorX and .anchorY). By setting these to a value between 0 and 1 you could put the .x and .y value to be any where within the bounding box and a later update allows for negative numbers and numbers greater than one that lets you put the .x and .y outside the box.
Why would you want to do this? If you’re creating a bunch of display.newTextObjects and you want them all to left-align you can change the .anchorX to 0 and now they will all align nicely. Want to position something at the bottom of the screen?
object.y = display.actualContentHeight
object.anchorY = 1
Rob
still the error is their in 146 line
as setanchopoint(nil)
– Hide status bar
display.setStatusBar(display.HiddenStatusBar);
– Display a background image
–[[ Here we are inserting
a background image of clouds --]]
local background = display.newImage(“images/clouds.png”);
– Generate Physics Engine
local physics = require(“physics”);
– 1. Enable drawing mode for testing, you can use “normal”, “debug” or “hybrid”
physics.setDrawMode(“normal”)
– 2. Enable multitouch so more than 1 balloon can be touched at a time
system.activate(“multitouch”);
– 3. Find device display height and width
_H = display.contentHeight;
_W = display.contentWidth;
– 4. Number of balloons variable
balloons = 0;
– 5. How many balloons do we start with?
numBalloons = 100;
– 6. Game time in seconds that we’ll count down
startTime = 20;
– 7. Total amount of time
totalTime = 20;
– 8. Is there any time left?
timeLeft = true;
– 9. Ready to play?
playerReady = false;
– 10. Generate math equation for randomization
Random = math.random;
– 11. Load background music
local music = audio.loadStream(“sounds/music.mp3”);
– 12. Load balloon pop sound effect
local balloonPop = audio.loadSound(“sounds/balloonPop.mp3”);
– Create a new text field using native device font
local screenText = display.newText("…Loading Balloons…", 0, 0, native.systemFont, 16*2);
screenText.xScale = 0.5
screenText.yScale = 0.5;
– Change the center point to bottom left
screenText.anchorX = 0
screenText.anchorY = 0
– Place the text on screen
screenText.x = _W / 2 - 210;
screenText.y = _H - 20;
– Create a new text field to display the timer
local timeText = display.newText("Time: "…startTime, 0, 0, native.systemFont, 16*2);
screenText.anchorX = 0.5
screenText.anchorY = 0.5;
timeText.x = _W / 2;
timeText.y = _H - 20;
local gameTimer;
– Did the player win or lose the game?
local function gameOver(condition)
– If the player pops all of the balloons they win
if (condition == “winner”) then
screenText.text = “Amazing!”;
– If the player pops 70 or more balloons they did okay
elseif (condition == “notbad”) then
screenText.text = “Not too shabby.”
– If the player pops less than 70 balloons they didn’t do so well
elseif (condition == “loser”) then
screenText.text = “You can do better.”;
end
end
– Remove balloons when touched and free up the memory they once used
local function removeBalloons(obj)
obj:removeSelf();
– Subtract a balloon for each pop
balloons = balloons - 1;
– If time isn’t up then play the game
if (timeLeft ~= false) then
– If all balloons were popped
if (balloons == 0) then
timer.cancel(gameTimer);
gameOver(“winner”)
elseif (balloons <= 30) then
gameOver(“notbad”);
elseif (balloons >=31) then
gameOver(“loser”);
end
end
end
local function countDown(e)
– When the game loads, the player is ready to play
if (startTime == totalTime) then
– Loop background music
audio.play(music, {loops =- 1});
playerReady = true;
screenText.text = “Hurry!”
end
– Subtract a second from start time
startTime = startTime - 1;
timeText.text = "Time: "…startTime;
– If remaining time is 0, then timeLeft is false
if (startTime == 0) then
timeLeft = false;
end
end
– 1. Start the physics engine
physics.start()
– 2. Set gravity to be inverted
physics.setGravity(0, -0.4)
–[[ Create “walls” on the left, right and ceiling to keep balloon on screen
display.newRect(x coordinate, y coordinate, x thickness, y thickness)
So the walls will be 1 pixel thick and as tall as the stage
The ceiling will be 1 pixel thick and as wide as the stage
–]]
local leftWall = display.newRect (0, 0, 1, display.contentHeight);
local rightWall = display.newRect (display.contentWidth, 0, 1, display.contentHeight);
local ceiling = display.newRect (0, 0, display.contentWidth, 1);
– Add physics to the walls. They will not move so they will be “static”
physics.addBody (leftWall, “static”, { bounce = 0.1 } );
physics.addBody (rightWall, “static”, { bounce = 0.1 } );
physics.addBody (ceiling, “static”, { bounce = 0.1 } );
local function startGame()
– 3. Create a balloon, 25 pixels by 25 pixels
local myBalloon = display.newImageRect(“images/balloon.png”, 25, 25);
– 4. Set the reference point to the center of the image
myBalloon:setanchorpoint(display.CenterReferencePoint);
– 5. Generate balloons randomly on the X-coordinate
myBalloon.x = Random(50, _W-50);
– 6. Generate balloons 10 pixels off screen on the Y-Coordinate
myBalloon.y = (_H+10);
– 7. Apply physics engine to the balloons, set density, friction, bounce and radius
physics.addBody(myBalloon, “dynamic”, {density=0.1, friction=0.0, bounce=0.9, radius=10});
– Allow the user to touch the balloons
function myBalloon:touch(e)
– If time isn’t up then play the game
if (timeLeft ~= false) then
– If the player is ready to play, then allow the balloons to be popped
if (playerReady == true) then
if (e.phase == “ended”) then
– Play pop sound
audio.play(balloonPop);
– Remove the balloons from screen and memory
removeBalloons(self);
end
end
end
end
– Increment the balloons variable by 1 for each balloon created
balloons = balloons + 1;
– Add event listener to balloon
myBalloon:addEventListener(“touch”, myBalloon);
– If all balloons are present, start timer for totalTime (10 sec)
if (balloons == numBalloons) then
gameTimer = timer.performWithDelay(1000, countDown, totalTime);
else
– Make sure timer won’t start until all balloons are loaded
playerReady = false;
end
end
– 8. Create a timer for the game at 20 milliseconds, spawn balloons up to the number we set numBalloons
gameTimer = timer.performWithDelay(20, startGame, numBalloons);
“setanchorpoint” is not a valid command. That is why it comes up as ‘nil’. The answers are already in the posts above, so make sure you read them carefully!