1 files changed, 126 insertions, 0 deletions
diff --git a/macros/data.asm b/macros/data.asm
new file mode 100755
index 00000000..32903b0f
--- /dev/null
+++ b/macros/data.asm
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+; Value macros
+
+percent EQUS "* $ff / 100"
+
+; Constant data (db, dw, dl) macros
+
+dwb: MACRO
+	dw \1
+	db \2
+ENDM
+
+dbw: MACRO
+	db \1
+	dw \2
+ENDM
+
+dbbw: MACRO
+	db \1, \2
+	dw \3
+ENDM
+
+dbww: MACRO
+	db \1
+	dw \2, \3
+ENDM
+
+dbwww: MACRO
+	db \1
+	dw \2, \3, \4
+ENDM
+
+dn: MACRO ; nybbles
+rept _NARG / 2
+	db ((\1) << 4) | (\2)
+	shift
+	shift
+endr
+ENDM
+
+dc: MACRO ; "crumbs"
+rept _NARG / 4
+	db ((\1) << 6) | ((\2) << 4) | ((\3) << 2) | (\4)
+	shift
+	shift
+	shift
+	shift
+endr
+ENDM
+
+dx: MACRO
+x = 8 * ((\1) - 1)
+rept \1
+	db ((\2) >> x) & $ff
+x = x + -8
+endr
+ENDM
+
+dt: MACRO ; three-byte (big-endian)
+	dx 3, \1
+ENDM
+
+dd: MACRO ; four-byte (big-endian)
+	dx 4, \1
+ENDM
+
+bigdw: MACRO ; big-endian word
+	dx 2, \1 ; db HIGH(\1), LOW(\1)
+ENDM
+
+dba: MACRO ; dbw bank, address
+rept _NARG
+	dbw BANK(\1), \1
+	shift
+endr
+ENDM
+
+dab: MACRO ; dwb address, bank
+rept _NARG
+	dwb \1, BANK(\1)
+	shift
+endr
+ENDM
+
+dba_pic: MACRO ; dbw bank, address
+	db BANK(\1) - PICS_FIX
+	dw \1
+ENDM
+
+dbpixel: MACRO
+if _NARG >= 4
+; x tile, x pxl, y tile, y pxl
+	db \1 * 8 + \3, \2 * 8 + \4
+else
+; x, y
+	db \1 * 8, \2 * 8
+endc
+ENDM
+
+dsprite: MACRO
+; y tile, y pxl, x tile, x pxl, vtile offset, attributes
+	db (\1 * 8) % $100 + \2, (\3 * 8) % $100 + \4, \5, \6
+ENDM
+
+menu_coords: MACRO
+; x1, y1, x2, y2
+	db \2, \1 ; start coords
+	db \4, \3 ; end coords
+ENDM
+
+bcd: MACRO
+rept _NARG
+	dn ((\1) % 100) / 10, (\1) % 10
+	shift
+endr
+ENDM
+
+sine_table: MACRO
+; \1: amplitude
+
+x = 0
+	rept $20
+	; Round up.
+	dw (sin(x) + (sin(x) & $ff)) >> 8
+x = x + (\1) * $40000
+	endr
+ENDM