My hero sprite is on a physics sprite. If the player (user) doesn't move the hero for 2 seconds while touching the sprite I want to end the game. In the update method I am checking to see if the two sprites are touching for longer than 2 seconds and if true run "game over" action. This is the code
if( TWO SPRITES ARE TOUCHING && USER ISN"T TOUCHING THE SCREEN ){
[_hero runAction:[CCActionSequence actions:[CCActionDelay actionWithDuration:2.0f],
_gameOverAction,
nil]];
}
The end game action runs even if the user is holding down. Basically if you don't touch the screen to move the sprite the game should end. Any suggestions?
In your current code as soon as two sprites are touching and the user isn't touching the screen it will quick off the action. It will happen in 2 seconds no matter what as it is never cancelled.
What you need to do instead is keep a variable of the time it last happened and check to see if 2 seconds have passed since then in your update loop. If it has then you can call the game over method.
Related
I have a character sheet for the player that triggers when they are idle for a while. The sheet has them going from standing to laying down in 6 frames, sleeping for 3 frames and then standing back up in 7 frames.
I'm looking to pause the animation when it reaches the 9th frame without using timers (as the character sheet may change in the future). Is there a function that will let me query which animation frame is currently being displayed?
Alternatively, is there a way to know if a character sheet has reached the last frame and is about to return to the first frame. I need to know when this animation has finished a cycle so I can smoothly transition back into the walking animation.
I'm extending Modern Algebra's ExtraMovementFrames plugin, so the solution ended up being to capture the output of this:
var patternIndex = (this._pattern % this.emfCharacterState().pattern.length);
which uses the ._pattern property of the player, modulo the length of the animation.
I then used this.setStepAnime(false); to pause the walking animation of the character once it reached the desired frame.
Also asked this on the rpg maker mv forums: https://forums.rpgmakerweb.com/index.php?threads/checking-which-frame-of-a-character-sheet-is-currently-active.115662/
Cocos2d offers two ways to let the player jump up, but by using jumpto() and jumpby(), people could not change the position of the sprite any more when it is jumping up.
How to write a method so that the sprite can jump like the "Super Mario"?
Some time ago I contributed some cocos2d code which made CCMove and CCJump actions stackable. See here. Starting from cocos2d 2.1, you can apply a CCJump actions concurrently with other movements.
However, if you want to deeply fine tune how the controls of your game feel, I'd avoid using CCActions altogether and I'd manage the sprite.position directly by processing player input.
you have to check for two condition for making your player to jump, same as in Super Mario.
Condition 1)
Only jump button is pressed at that time in CCJumpTo action you have to give the next position as the current position , height and no. jumps as one.
id jump = [CCJumpTo actionWithDuration:1 position:ccp(player.position.x, player.position.y)) height:20 jumps:1];
Condition 2)
When jump and forward button is pressed at that time in CCJumpTo action you have to give the next position as the current position.x + the distance you want to cover by jump,this will be static all the time , height and no. jumps as one.
id jump = [CCJumpTo actionWithDuration:1 position:ccp(player.position.x+20, player.position.y)) height:20 jumps:1];
And at the end you have to run jump action on player, hope you found this as solution for your question...!!
I'm working on a two player iOS game that is similar to checkers. I'm using cocos2d to create this game.
I want a think time of .5 seconds between when the player's move renders and when the computer's move renders to simulate think time.
The flow of the game is controlled using NSNotification events and looks like this...
Player (computer or human) submits a move -> The board adds the new sprite -> The game controller updates the current player and asks them to submit a move.
I've tried adding usleep(500000) at the end of the board update or the beginning of the game update. What ends up happening is the sprites added in the board update, for the human player, don't show up until after the computer player has submitted his move. So the game waits 500 milliseconds and then updates with both moves.
Is there a way to force the CCLayer to update its child sprites before the usleep, or is there just a better way of adding this think time?
Thanks
if you schedule for receiving an update in your controller, you could slip time in the update:(ccTime)dt function.
in your .h
float _slipTime;
in your .m
// with other declaratives
static float THINK_TIME=.5f;
// last line before the stall
_slipTime=0.f;
[self schedule:#selector(pauseForThink:)];
-(void) pauseForThink:(ccTime) dt {
_slipTime+=dt;
if(_slipTime>THINK_TIME) {
[self unschedule:#selector(pauseForThink:)];
// trigger here whatever you wanted to accomplish after
// the think pause.
}
}
ok, this is simple, but will prevent the main loop from being blocked (this is what happens with your sleep). When running at 60 FPS, the pauseForThink method will be called about 30 times, and cocos will have 30 draw cycles during the pause.
Just wondering how Cocos manages the CPU cycle and graphics engine for CCSprites that are offscreen, including those in the middle of an animation. If you have many animated sprites going on and off the screen, I could check and stop each animation when it's off the screen then restart it when it is about to come back on, but I'm wondering if this is necessary?
Suppose you had a layer with a bunch of them and you make the layer invisible, but don't stop the sprite animations. Will they still use CPU time?
I just did a quick test (good question :) ), in a game where i can slide the screen over a large map that contains images of soldiers performing an 'idle' animation. They continue running when off-screen (I tacked a CCCallFunc in a sequence in a repeat forever, to a simple selector that logs).
I suspect they would also run when the object is not visible. It kind of makes sense, especially for animations. If you look at my use case, if the animation were stopped, it could cause a cognitive disconnect if the user slided the soldier in and out of view, especially when the soldier is doing a walk on the map - he could actually walk-in the view without the user having done any interaction with the screen.
I have designed a small tutorial named "Stacker", As the name suggests, The game involves stacking blocks on each other. I have a large number of blocks to be stacked and hence all cant be accomodated in the screen itself... I m new to cocos2d and box2d but have managed to create a body with its adjoining sprite wen a user clicks on the screen. I have used MouseJoint to give movement to the body till the user performs the drag action that is till the user takes his finger off the screen.
The problem is that i need to follow the sprite (actually need the camera to follow the sprite) when the user drags it above the screen space, i referred the following links with no success... i guess wat i need is to move the body to a virtual coordinates which m not getting coz even if the screen does shift using the camera methods, but the sprite doesnt move with respect to the screen...
cocos2d forum link
flash concept but box2d
Can some1 guide me in case i need to have some pre-requisites before following camera in the manner i specified.. Thanx!
Ok Guys!
Got it guys! Had to take a global variable which records the increments per frame, The increments were equal to the layer movement which i did by setting the position of the layer to a unit less in every frame! Then set the Mouse join to the target which is (ScreenCoordinates + increment) dis too has to be done in every frame!
Done!
Cool method but needed a bit of brainstorming!!