Player movement and sprites

I am trying to code a simple player/sprite movement engine, which will hopefully evolve into my first game as I add more to it. Basically I want to have it so my player moves in 8 directions, viewed from a top-down view.

I am baffled as what to do next. I created some example code to convey what I DO know so far...but it is totally not complete and I gave up halfway for now because I didn't know what else to put.

'*******************************
'*      PLAYER MOVEMENT        *
'*        AND SPRITES          *
'* --------------------------- *
'*  this code does NOT work    *
'*    and is meant only        *
'*    as a demonstration.      *
'*                             *
'*      DO NOT COMPILE         *
'*******************************

' Set up graphics mode
Graphics 640,480,0
SuperStrict' define every variable myself

'******** SPRITES (IMAGES) ********

' Mask all images
SetMaskColor 255,0,255

' Load the player images (4 cardinal directions)
spr_n = LoadAnimImage("n.png",64,64,0,4)' facing up (north)
spr_s = LoadAnimImage("s.png",64,64,0,4)' facing down (south)
spr_e = LoadAnimImage("e.png",64,64,0,4)' facing right (east)
spr_w = LoadAnimImage("w.png",64,64,0,4)' facing left (west)

' Load the player images (4 intermediate directions)
spr_ne = LoadAnimImage("ne.png",64,64,0,4)' diagonal up-right (northeast)
spr_nw = LoadAnimImage("nw.png",64,64,0,4)' diagonal up-left (northwest)
spr_sw = LoadAnimImage("sw.png",64,64,0,4)' diagonal down-left (southwest)
spr_se = LoadAnimImage("se.png",64,64,0,4)' diagonal down-right (southeast)

'******** TYPES ********

' Create the player type
Type t_player
	Field x_pos: Int' x_pos is an integer
	Field y_pos: Int' y_pos is an integer
	Field c_sprite: t_csprite' c_sprite is a type
End Type

' Create the csprite type
Type t_csprite
	Field c_frame: '?
End Type	

' Create new player instance
player:t_player = New t_player

I just want to know how I can have it so the player type holds the values for both the current "state" (walking/standing in different directions...ultimately I'll even add attacking animations, but that comes later) and the current frame of the current animation. Or is there a simpler way to do it? It all just makes my head spin.