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| author | yenatch <yenatch@gmail.com> | 2013-09-03 17:36:55 -0400 |
|---|---|---|
| committer | yenatch <yenatch@gmail.com> | 2013-09-03 17:36:55 -0400 |
| commit | b74e63a20dcdb0cf376977426a9dcbe64586273a (patch) | |
| tree | 9398efbc22ef1541b0c87e64724d6b256ccd458c /engine/delay.asm | |
| parent | d2eeab62eac2213b51371ea7359904f652914db3 (diff) | |
split out delay functions
Diffstat (limited to 'engine/delay.asm')
| -rw-r--r-- | engine/delay.asm | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/engine/delay.asm b/engine/delay.asm new file mode 100644 index 000000000..4e8b2147c --- /dev/null +++ b/engine/delay.asm @@ -0,0 +1,23 @@ +DelayFrame: ; 45a +; Wait for one frame + ld a, 1 + ld [VBlankOccurred], a + +; Wait for the next VBlank, halting to conserve battery +.halt + halt ; rgbasm adds a nop after this instruction by default + ld a, [VBlankOccurred] + and a + jr nz, .halt + ret +; 468 + + +DelayFrames: ; 468 +; Wait c frames + call DelayFrame + dec c + jr nz, DelayFrames + ret +; 46f + |