我有一条附有物理身体的船。这艘船是静态物理机构。船从CCAnimateMoveTo从左向右移动。当我点击屏幕时，我的角色掉了下来。我很好地发现了碰撞。但是我希望碰撞后我的角色只是落在船上并随身携带。性格是动态的身体。链接到示例视频：Sample video
我在这里创造一艘船：
- (void)createBoat
{
currentBoat = [CCSprite spriteWithImageNamed:@"Boat.png"];
currentBoat.position = ccp(0 - currentBoat.boundingBox.size.width, winSize.height * 0.2);
// currentBoat.physicsBody = [CCPhysicsBody bodyWithRect:(CGRect){0, 0, currentBoat.contentSize.width, currentBoat.contentSize.height * 0.5} cornerRadius:0];
CGPoint shape[6];
shape[0] = ccp(0, 30);
shape[1] = ccp(64, 10);
shape[2] = ccp(128, 30);
shape[3] = ccp(128, 0);
shape[4] = ccp(0, 0);
shape[5] = ccp(0, 30);
currentBoat.physicsBody = [CCPhysicsBody bodyWithPolylineFromPoints:shape count:6 cornerRadius:0 looped:NO];
currentBoat.physicsBody.type = CCPhysicsBodyTypeStatic;
currentBoat.physicsBody.collisionGroup = @"BoatGroup";
currentBoat.physicsBody.collisionType = @"BoatCollision";
[physicsWorld addChild:currentBoat z:PHYSICS_Z+3];
id actionMoveBoat = [[CCActionMoveTo alloc] initWithDuration:5.0f position:ccp(winSize.width + currentBoat.boundingBox.size.width, currentBoat.position.y)];
id actionMethod = [CCActionCallFunc actionWithTarget:self selector:@selector(createBoat)];
[currentBoat runAction:[CCActionSequence actions:actionMoveBoat, [[CCActionRemove alloc] init], actionMethod, nil]];
}
角色创作：
- (void)createCharacter
{
if (needCharacter)
{
CCSprite *newCharacter = [CCSprite spriteWithImageNamed:@"Character.png"];
newCharacter.opacity = 0;
newCharacter.position = ccp(winSize.width * 0.5, winSize.height * 0.76);
newCharacter.physicsBody = [CCPhysicsBody bodyWithRect:(CGRect){CGPointZero, newCharacter.contentSize} cornerRadius:0];
newCharacter.physicsBody.affectedByGravity = NO;
newCharacter.physicsBody.allowsRotation = YES;
newCharacter.physicsBody.collisionGroup = @"playerGroup";
newCharacter.physicsBody.collisionType = @"playerCollision";
[physicsWorld addChild:newCharacter z:PHYSICS_Z+4];
id actionFadeIn = [[CCActionFadeIn alloc] initWithDuration:0.5];
[newCharacter runAction:actionFadeIn];
[allCharacters addObject:newCharacter];
needCharacter = false;
touchDone = false;
}
}
然后检测触碰和碰撞：
- (void)touchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{
CCNode *lastCharacter = [allCharacters lastObject];
if (!touchDone)
{
[lastCharacter.physicsBody applyImpulse:ccp(0, 300)];
lastCharacter.physicsBody.type = CCPhysicsBodyTypeDynamic;
lastCharacter.physicsBody.affectedByGravity = YES;
touchDone = true;
}
}
- (BOOL)ccPhysicsCollisionBegin:(CCPhysicsCollisionPair *)pair playerCollision:(CCNode *)currentCharacterC BoatCollision:(CCNode *)currentBoatC {
currentCharacterC.physicsBody.collisionType = @"tmpCollision";
CCLOG(@"score++");
if ([allCharacters containsObject:currentCharacterC])
{
score++;
[scores setString:[NSString stringWithFormat:@"%d", score]];
[allCharacters removeAllObjects];
if (lives != 0)
{
needCharacter = true;
[self createCharacter];
}
}
CCLOG(@"allCharacters = %@", allCharacters);
return YES;
}
答案 0 :(得分：2)
我也遇到了同样的问题，尝试增加摩擦/表面速度等，但它并没有真正起作用。 最后必须以我自己的方式解决它，每当玩家落在任何身体上时，你保持一个指向该身体的指针，如玩家对象的_bodyUnderFeet。 现在，在更新循环中，将_bodyUnderFeet的速度添加到玩家计算的速度。请参阅zeroVel_x
的使用示例代码在这里：
void Player::update(float dt)
{
float zeroVel_x = 0;
if(_bodyUnderFeet != NULL)
{
zeroVel_x = _bodyUnderFeet->v.x;
}
cpBody *bd = getCPBody();
assert(bd);
//log("Body angle %f", bd->a);
//check forward backward or at rest
float accel = _accelGround;
if(_onGroundBoost < UP_BOOST)
{
accel = _accelAir;
}
if(_touchPressedB)
{
if(!isFlippedX())
{
setFlippedX(true);
}
//cpBodySetVel(bd, cpv(cpBodyGetVel(bd).x - accel*0.25, 0));
cpVect bdv = cpBodyGetVel(bd);
bdv.x = bdv.x - zeroVel_x;
if(bdv.x > 0) bdv.x = 0;
if(bdv.x > -_maxVelocity.x)
cpBodySetVel(bd, cpv(zeroVel_x + bdv.x - accel*0.25, bdv.y));
}
else if(_touchPressedF)
{
if(isFlippedX())
{
setFlippedX(false);
}
//cpBodySetVel(bd, cpv(cpBodyGetVel(bd).x + accel*0.25, 0));
cpVect bdv = cpBodyGetVel(bd);
bdv.x = bdv.x - zeroVel_x;
if(bdv.x < 0) bdv.x = 0;
if(bdv.x < _maxVelocity.x)
cpBodySetVel(bd, cpv(zeroVel_x+bdv.x + accel*0.25, bdv.y));
}
else
{
cpFloat bd_x = cpBodyGetVel(bd).x;
bd_x = bd_x - zeroVel_x;
if(bd_x>0)
{
if(bd_x > accel*0.25)
{
cpBodySetVel(bd, cpv(zeroVel_x+bd_x - accel*0.25, cpBodyGetVel(bd).y));
}
else
{
cpBodySetVel(bd, cpv(zeroVel_x+0, cpBodyGetVel(bd).y));
}
}
else if(bd_x < 0)
{
if(bd_x < accel*0.25)
{
cpBodySetVel(bd, cpv(zeroVel_x+bd_x + accel*0.25, cpBodyGetVel(bd).y));
}
else
{
cpBodySetVel(bd, cpv(zeroVel_x+0, cpBodyGetVel(bd).y));
}
}
}
//check jump
if(_touchPressedJ)
{
if(_onGroundBoost)
{
cpVect bdv = cpBodyGetVel(bd);
if(bdv.y < 0) bdv.y = 0;
if((bdv.y + _accelUp) < _maxVelocity.y)
{
cpBodySetVel(bd, cpv(bdv.x, bdv.y + _accelUp));
--_onGroundBoost;
}
else
{
cpBodySetVel(bd, cpv(bdv.x, _maxVelocity.y));
_onGroundBoost = 0;
}
}
}
//check shots
if(_touchPressedS)
{
if(!_bulletFired)
{
}
}
//check home
if(_touchPressedH)
{
}
boundRotation(bd);
}
答案 1 :(得分：0)
我想， 你跌倒后可以增加人与船之间的摩擦力。并降低弹性。然后船可以“采取”＃39;那个男人一起去......
只是一招。