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max9xs
Member
Hello,
I am making a game like Tetris using Chipmunk for iPhone/ipod..
->There are having 20X20 pixel dynamic body blocks.
->.in Every second, 5 new blocks are generating.
And FPS rate becomes 5-8... Is there having any solution for it to increase as maximum as possible...
->Also what is the correct way to remove shape, body, and assigned sprites..
please help me.. Thanks in Advance..
Mhh could be many things. Does the drop occur when stackin large amount of pieces?
If it is like tetris having physics seems like an overkill. I am positive you could do it without that.
Are you precreating your objects?
or creating them on the fly?
if you are creating them on the fly, try creating them on init, and when you eliminate them reuse them.
If you are precreating them, check that you are not creating them all in the same spot because they will all trigger collisions.
max9xs
Member
When I am adding in init() 40 dynamic body i get slow fps...
Here is the code....
What could be the value of hash sizes? or is this correct method ?
cpInitChipmunk();
cpResetShapeIdCounter();
//////
cpBody *staticBody = cpBodyNew(INFINITY, INFINITY);
space = cpSpaceNew();
cpSpaceResizeStaticHash(space, 400.0f, 40);
cpSpaceResizeActiveHash(space, 100, 600);
space->gravity = ccp(0, -80);
space->elasticIterations = space->iterations;
//man
CGPoint verts[] = {
ccp(-10,-10),
ccp(-10,10),
ccp(10,10),
ccp(10,-10),
};
for(int i=0;i<50;i++)
{
int q=arc4random()%5+1;
int xp=160-arc4random()%100;
int yp=240-arc4random()%100;
Sprite *block=[Sprite spriteWithFile:[NSString stringWithFormat:@"%d.png",q]];
[block setPosition:ccp(xp,yp)];
[self addChild:block];
block.scale=0.5;
cpBody *blockBody= cpBodyNew(1.0f,cpMomentForPoly(1.0f, 4, verts, CGPointZero));
blockBody->p = ccp(xp,yp);
cpSpaceAddBody(space, blockBody);
cpShape * shape = cpPolyShapeNew(blockBody, 4, verts, CGPointZero);
shape->e = 0.0f; shape->u = 0.5f;
shape->data = block;
shape->collision_type = q;
cpSpaceAddShape(space, shape);
}
moby
Member
try pre-creating a full screen's worth of sprites (blocks) as the extreme worst case, and optimize from that point forward. is that the 40 you're talking about?
also what is your space->iterations value set to? try going for a lower number;
Another idea is to change the physics for the all lower rows under the current top row, since you don't need to continuously recalculate the physics for those.
there is a good PDF tutorial I saw by the creator of Field Runners that builds a similar tetris like game. google for it for some ideas (it doesn't use physics though. instead it layes out the grid in a n x m matrix and tracks collisions based on alignment in that grid layout. imho physics might be overkill for this.
hth
m0by
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