c64-livecoding/wip-hugo/routines/triangle/triangle.inc

17 lines
457 B
PHP

;;The triangles 3 corner-positions, they may be in any given order.
A_X = $EA
A_Y = $E9
B_X = $E8
B_Y = $E7
C_X = $E6
C_Y = $E5
;; Differense in height (after these points have been sorted look in triangle.s for more detail)
AB = $E4
BC = $E3
;; These come from mem.inc
;; Takes up FF - F5
X_pos = $FC
Y_pos = $FB
byte_to_paint = $FE ; Byte with one 1 that corisponds to a pixel.
btp_mem_pos = $F9 ; 16-bit value (uses FA), byte to paint memory position