60 lines
1.1 KiB
NASM
60 lines
1.1 KiB
NASM
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;----------------
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; Animation Subs
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;----------------
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SECTION "Animation Variables", HRAM
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hCameraX: dw
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hCameraY: dw
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hWorkingX: dw
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hWorkingY: dw
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hWorkingScreenX: db
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hWorkingScreenY: db
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hWorkingState: db
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hWorkingCounter: db
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hWorkingData: dw
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hWorkingTile: dw
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hWorkingEnd:
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SECTION "Animations Subs", ROM0
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; RenderActor:
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; takes a pointer to an actor struct
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; and renders it to shadow OAM, advancinc
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; the animation frame and constructing
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; each frame as needed.
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; initial input:
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; [hl] <- start of Actor Struct in WRAM
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; output:
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; an oam object for each line in the frame data,
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; copied to shadowOAM (wShadowOAM)
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RenderActor::
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; load world X and Y to temp RAM
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ld a, [hli]
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ld [hWorkingX], a
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ld a, [hli]
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ld [hWorkingX+1], a
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ld a, [hli]
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ld [hWorkingY], a
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ld a, [hli]
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ld [hWorkingY+1], a
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; done loading X and Y
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; figure out if within 256 of camera
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; ---------
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; first compare upper byte of XXYY
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; if this is more than 1 away, break
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ld a, [hCameraX]
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ld b, a
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ld a, [hWorkingX]
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; b = camera byte
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; a = actor byte
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; work out if actor minus camera is <= 1
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sub b
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; ---------
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.skipRendering
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