I'm writing a Snake game in C++, I have a structure for a section of the snake which contains, data such as x position, y position, direction etc.
I have it all working, setting all the data to integers, I just would like to change some of the data types to enum's because it looks a lot neater and easier to understand. I've tried lots and looked online but I can't seem to find anything.
This is some of the Structure:
struct SnakeSection
{
int snakePosX;
int snakePosY;
int SectionType;
// Tail = 0, Body = 1, Head = 2
int animation;
enum Direction
{
Up = 0,
Right = 1,
Down = 2,
Left = 3
};
};
My attempt at trying to pass one of the Directions to another function:
void PlayerSnake::createSnake()
{
// Parameters are direction, x and y pos, the blocks are 32x32
addSection(SnakeSection::Direction::Right, mStartX, mStartY, 2);
}
Then I tried setting the direction to the one passed in in that function:
void PlayerSnake::addSection(SnakeSection::Direction dir, int x, int y, int type)
{
//Create a temp variable of a Snake part structure
SnakeSection bufferSnake;
bufferSnake.Direction = dir;
bufferSnake.animation = 0;
//is it head tail or what? This is stored in the Snake section struct
//TODO Add different sprites for each section
bufferSnake.SectionType = type;
//assign the x and y position parameters to the snake section struct buffer
bufferSnake.snakePosX = x;
bufferSnake.snakePosY = y;
//Push the new section to the back of the snake.
lSnake.push_back(bufferSnake);
}
error: invalid use of enum SnakeSection::Direction
Thanks
The error on the following line ...
bufferSnake.Direction = dir;
... is reasoned, that besides declaring the enum
type, you'll still have to have a class member variable to store it:
struct SnakeSection
{
int snakePosX;
int snakePosY;
int SectionType;
// Tail = 0, Body = 1, Head = 2
int animation;
enum Direction
{
Up = 0,
Right = 1,
Down = 2,
Left = 3
};
Direction direction_; // <<<<<<<<<<<<<< THAT'S WHAT'S MISSING IN YOUR CODE
};
And refer to
bufferSnake.direction_= dir; // <<<<<<<<<<<<<< THAT'S THE MEMBER VARIABLE YOU'LL
// HAVE TO REFER TO!
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