Madison Weaver / Guides

PICO-8 provides two simple ways to draw a circle: CIRC() and CIRCFILL(). CIRC() will draw an empty circle with a 1 pixel-wide border and CIRCFILL() will draw a filled circle. Each function takes an x coordinate, a y coordinate, a radius, and a color.

RED = 8

X=64
Y=32
R=4
C=RED

-- DRAWS A RED CIRCLE IN THE CENTER OF THE SCREEN
CIRC(X,Y,R,C)

-- DRAWS A FILLED, RED CIRCLE IN THE CENTER OF THE SCREEN
CIRCFILL(X,Y,R,C)

If you’re drawing a lot of shapes with the same color, you may omit the color parameter by setting the current color with the COLOR() function.

RED=8

FUNCTION _DRAW()
    X=64
    Y=64
    R=4
    COLOR(RED)
    CIRCFILL(X+4*0,Y,R)
    CIRCFILL(X+4*1,Y,R)
    CIRCFILL(X+4*2,Y,R)
    CIRCFILL(X+4*3,Y,R)
    CIRCFILL(X+4*4,Y,R)
    CIRCFILL(X+4*5,Y,R)
    CIRCFILL(X+4*6,Y,R)
    CIRCFILL(X+4*7,Y,R)
    CIRCFILL(X+4*8,Y,R)
    CIRCFILL(X+4*9,Y,R)
END