iphone - cocos2d semantic issue -

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getting error in xcode 4. reading book uses 0.99.5 think , using 1.0.0 framework cocos2d.

error: semantic issue: assigning 'cgpoint' (aka 'struct cgpoint') incompatible type 'double'

on line

playervelocity = playervelocity.x * dec + acceleration.x * sens;

any ideas.

full code

float dec = 0.4f; //lower = quicker change direction; float sens = 6.0f; //higher more sensitive; float maxvel = 100;  playervelocity = playervelocity.x * dec + acceleration.x * sens;  if(playervelocity.x > maxvel) {  } else if(playervelocity.x < - maxvel) {     playervelocity.x = - maxvel; }

playervelocity vector, should assign value this:

playervelocity = ccp(playervelocity.x * dec + acceleration.x * sens, 0);

ccp macro build vector 2 component specify. gave 0 y component, feel free change value need.


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