mm/asm/dpad control.asm

dpad_control:
    // a0: number you want to control
    // a1: button state
    // v0: number after modifications
    la      t1, dpad_values
    srl     t0, a1, 8
    andi    t0, 0xF
    add     t0, t1
    lb      t0, 0(t0)
    jr
    add     v0, a0, t0

dpad_values:
    // use table of values for branchless operation
    .byte 0,    1,    -1,   0
    .byte -16,  -4,   -64,  -16
    .byte +16,  +64,  +4,   +16
    .byte 0,    1,    -1,   0
.align
work on onscreen actor num/var control 2016-01-12 06:59:29 -08:00			`dpad_control:`
			`// a0: number you want to control`
			`// a1: button state`
			`// v0: number after modifications`
			`la t1, dpad_values`
			`srl t0, a1, 8`
refactor build scripts, use new lips features 2016-04-26 15:28:58 -07:00			`andi t0, 0xF`
			`add t0, t1`
work on onscreen actor num/var control 2016-01-12 06:59:29 -08:00			`lb t0, 0(t0)`
			`jr`
			`add v0, a0, t0`

			`dpad_values:`
			`// use table of values for branchless operation`
			`.byte 0, 1, -1, 0`
update lips; use new features 2016-01-13 11:20:28 -08:00			`.byte -16, -4, -64, -16`
			`.byte +16, +64, +4, +16`
work on onscreen actor num/var control 2016-01-12 06:59:29 -08:00			`.byte 0, 1, -1, 0`
			`.align`