我正在尝试使用 WASD 为 Irrlicht 中的 3D 球体设置动画。运动部分工作正常,但转动不工作。只要我只按 W / S 或 A / D 就可以了。如果我将它们混合起来或从不同的点开始,旋转就会旋转。
宣言
scene::ISceneNode* ballSceneNode = sceneManager->addSphereSceneNode(5);
if (ballSceneNode) {
ballSceneNode->setPosition(core::vector3df(0, 0, 100));
ballSceneNode->setMaterialTexture(0, driver->getTexture("media/ball.bmp"));
ballSceneNode->setMaterialFlag(video::EMF_LIGHTING, false);
}
主循环
core::vector3df ballRotation = ballSceneNode->getRotation();
core::vector3df ballRotation = ballSceneNode->getPosition();
if(receiver.isKeyDown(irr::KEY_KEY_W)) {
ballPosition.Z += movement;
ballRotation.X++;
} else if(receiver.isKeyDown(irr::KEY_KEY_S)) {
ballPosition.Z -= movement;
ballRotation.X--;
}
if(receiver.isKeyDown(irr::KEY_KEY_A)) {
ballPosition.X -= movement;
ballRotation.Z++;
} else if(receiver.isKeyDown(irr::KEY_KEY_D)) {
ballPosition.X += movement;
ballRotation.Z--;
}
ballSceneNode->setPosition(ballPosition);
ballSceneNode->setRotation(ballRotation);
我已经读到您需要core::matrix4
轮换或更好地说它会有所帮助/更容易并且也许也是正确的,但我不知道如何使用它。
编辑
if(receiver.isKeyDown(irr::KEY_KEY_W)) {
ballPosition.Z += movement;
cameraPosition.Z += movement;
core::quaternion test;
test.fromAngleAxis(xAxisAngle, core::vector3df(1,0,0));
xAxisAngle += 0.1f;
test.normalize();
core::vector3df rot;
test.toEuler(rot);
ballSceneNode->setRotation(rot * core::RADTODEG);
} else if(receiver.isKeyDown(irr::KEY_KEY_S)) {
ballPosition.Z -= movement;
cameraPosition.Z -= movement;
core::quaternion test;
test.fromAngleAxis(xAxisAngle, core::vector3df(1,0,0));
xAxisAngle -= 0.1f;
test.normalize();
core::vector3df rot;
test.toEuler(rot);
ballSceneNode->setRotation(rot * core::RADTODEG);
}
if(receiver.isKeyDown(irr::KEY_KEY_A)) {
ballPosition.X -= movement;
cameraPosition.X -= movement;
core::quaternion test;
test.fromAngleAxis(zAxisAngle, core::vector3df(0,0,1));
zAxisAngle += 0.1f;
test.normalize();
core::vector3df rot;
test.toEuler(rot);
ballSceneNode->setRotation(rot * core::RADTODEG);
} else if(receiver.isKeyDown(irr::KEY_KEY_D)) {
ballPosition.X += movement;
cameraPosition.X += movement;
core::quaternion test;
test.fromAngleAxis(zAxisAngle, core::vector3df(0,0,1));
zAxisAngle -= 0.1f;
test.normalize();
core::vector3df rot;
test.toEuler(rot);
ballSceneNode->setRotation(rot * core::RADTODEG);
}
xAxisAngle
并且zAxisAngle
只是 f32,默认值为 0。
现在的问题是:WWD(跳转到原始状态并丢失 2 个 W)