spd sprite loading in kickassembler

sprite_macros.s

.var spdDataTemplate = "Magic=$0,Version=$3,NumSprites=$4,NumAnims=$5,Bg=$6,Multicol1=$7,Multicol2=$8"
.var iiro = LoadBinary("sprites/iiro.spd", spdDataTemplate)

.macro setupSprites(spd, data, dblw, dblh) {
    .const numSprites = spd.getNumSprites()+1
    .const spriteMask = ((1 << numSprites)-1)
    .var xScale = 1
    .var yScale = 1
    lda #spriteMask
    .if (dblw || dblh) {
        .if (dblw) {
            .eval xScale = 2
            sta $d01d
        }
        .if (dblh) {
            .eval yScale = 2
            sta $d017
        }
    }
    sta $d015 // enable sprites
    .const multicolor = true
    .if (multicolor) {
        sta $d01c // multicolor
        lda #spd.getMulticol1()
        sta $d025
        lda #spd.getMulticol2()
        sta $d026
    }
    .for (var si = 0; si < numSprites; si++) {
        lda data + si*64 + 63
        sta $d027 + si
        // init sprite ptrs (note: have to config ptrs to both screen RAMs
        // since we are double buffering.
        lda #(data/64) + si
        sta screen0+$03f8 + si
        sta screen1+$03f8 + si
    }
    // load x,y position
    ldx #100
    .for (var s = 0; s < 4; s++) {
        stx $d000+s*2
        ldy #850+s*21*yScale
        sty $d000+s*2+1
    }
}

// how to use the macro
main:
  setupSprites(iiro, iiro_spritedata, true, true)


.align 64
iiro_spritedata:
.for (var si = 0; si < iiro.getNumSprites()+1; si++) {
    .for (var bi = 0; bi < 64; bi++) {
        .byte iiro.get(si*64 + bi + 9)
    }
}