fantaye-1 / man_pac Goto Github PK

After testing 9f2a567, attempting to restore original functionality with restore() resulted in an irrecoverable error in the kernel that required a hard restart. This only occurs when terminating after the last ghost is registered as terminating, konami.c:270.

Consider these data types for the implementation in ghost.c:

// Represents a coordinate pair
typedef struct {
int x;
int y;
} coord_t;

// Represents a width/height pair
typedef struct {
int w;
int h;
} dims_t;

// Represents a ghost
typedef struct {
pid_t pid; // Ghost process ID
coord_t pos; // Pixel-based position of Ghost
dims_t dims; // 
int order; // Order in which a Ghost was instantiated (first = 0, second = 1, etc.)
} ghost_t;

Each ghost:

• Moves independent of each other (cannot access other ghost)
• Moves in a deterministic manner
• Does not collide, intersect, or overlap other ghosts
• Should use a provided set of dimensions as the screen width and height

Complete this functions in ghost.c to be used later:

// Returns the next position for a ghost
coord_t
next_position(ghost_t *ghost, dims_t *screen)
{
coord_t new_pos = {.x = 0, .y = 0};
return new_pos;
}

There is duplicated code between ghost.c and manpac.c.
To reduce our line count, we should refactor the shared code into a shared.c file, add the function protoypes to shared.h.
The original behavior should be maintained.

Use @yashito's next movement code to determine a ghost's next position given a timer of some sub-second interval.

Must accept keyboard input at a global scope without a window.
Movement should be proportional to Ghost's movement.

It seems that the proc hook specifically is causing issues during teardown for a restart.

Intercept key events at the kernel level to check for the Konami code.
This is not a keylogger, it should only store the state necessary to check the. Storing only the previous character and a boolean valid state should be sufficient.

When manpac process was executed, it created about 120 idle processes of manpac, even after it supposed to be terminated.

Review shared.h. Note the structures coord_t and dims_t which are used to represent the location and dimensions of a ghost (ghost_t).

Complete the following function in manpac.c, it will return NULL when there is no collision, otherwise it returns the first Ghost which collides with Manpac:

ghost_t*
collided_ghost() {
	ghost_t *ghost = NULL;
	int i;
	for (i = 0; i < 4; i++)
	{
		ghost = &shared->ghosts[i];
	}
}

Update the list of ghosts at an interval you think makes sense. This should be done in manpac.c, not a new file. Using the order of a ghost, assign a color that will be used to identify the ghost.
List the PID of the ghost in that color.

You can use ANSI escape codes to color text, like this:

#include <stdio.h>

#define RED   "\x1B[31m"
#define GRN   "\x1B[32m"
#define YEL   "\x1B[33m"
#define BLU   "\x1B[34m"
#define MAG   "\x1B[35m"
#define CYN   "\x1B[36m"
#define WHT   "\x1B[37m"
#define RESET "\x1B[0m"

void main(int argc, char **argv) {
printf(RED "red text" RESET "\n");
}

A good starting point for your implementation:
https://github.com/fantaye-1/man_pac/blob/master/manpac.c#L131

Setup:

• Makefile
• konami.c
• manpac.c
• pacman.c

Wraps exec system call to replace calls of "/usr/bin/man" "man pac".

The GUI implementation using GTK.
The windows will be created for each Manpac and the Ghosts that moves.

It describes:

• What it is expected to accomplish
• What it does

It should explain how to:

• Compile
• Run
• Interact with the project

When called properly, spawns "ghost" executable

Using the kernel file descriptor for "/proc", wrap the implementation of readdir so that instances of ghost are not visible.