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