diff options
Diffstat (limited to 'engine/overworld/movement.asm')
| -rw-r--r-- | engine/overworld/movement.asm | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/engine/overworld/movement.asm b/engine/overworld/movement.asm index 5b9f878d..30793dec 100644 --- a/engine/overworld/movement.asm +++ b/engine/overworld/movement.asm @@ -188,7 +188,7 @@ UpdateNPCSprite: ; 4ed1 (1:4ed1) call LoadDEPlusA ; a = [wNPCMovementDirections + $fe] (?) jr .determineDirection .randomMovement - call getTileSpriteStandsOn + call GetTileSpriteStandsOn call Random .determineDirection ld b, a @@ -504,7 +504,7 @@ CheckSpriteAvailability: ; 50dc (1:50dc) .skipXVisibilityTest ; make the sprite invisible if a text box is in front of it ; $5F is the maximum number for map tiles - call getTileSpriteStandsOn + call GetTileSpriteStandsOn ld d, $60 ld a, [hli] cp d @@ -685,7 +685,7 @@ CanWalkOntoTile: ; 516e (1:516e) ; calculates the tile pointer pointing to the tile the current sprite stancs on ; this is always the lower left tile of the 2x2 tile blocks all sprites are snapped to ; hl: output pointer -getTileSpriteStandsOn: ; 5207 (1:5207) +GetTileSpriteStandsOn: ; 5207 (1:5207) ld h, $c1 ld a, [H_CURRENTSPRITEOFFSET] add $4 @@ -724,6 +724,10 @@ LoadDEPlusA: ; 522f (1:522f) ret DoScriptedNPCMovement: ; 5236 (1:5236) +; This is an alternative method of scripting an NPC's movement and is only used +; a few times in the game. It is used when the NPC and player must walk together +; in sync, such as when the player is following the NPC somewhere. An NPC can't +; be moved in sync with the player using the other method. ld a, [wd730] bit 7, a ret z @@ -740,28 +744,28 @@ DoScriptedNPCMovement: ; 5236 (1:5236) .noCarry ld a, [hl] ; check if moving up - cp $40 + cp NPC_MOVEMENT_UP jr nz, .checkIfMovingDown call GetSpriteScreenYPointer ld c, SPRITE_FACING_UP ld a, -2 jr .move .checkIfMovingDown - cp $0 + cp NPC_MOVEMENT_DOWN jr nz, .checkIfMovingLeft call GetSpriteScreenYPointer ld c, SPRITE_FACING_DOWN ld a, 2 jr .move .checkIfMovingLeft - cp $80 + cp NPC_MOVEMENT_LEFT jr nz, .checkIfMovingRight call GetSpriteScreenXPointer ld c, SPRITE_FACING_LEFT ld a, -2 jr .move .checkIfMovingRight - cp $c0 + cp NPC_MOVEMENT_RIGHT jr nz, .noMatch call GetSpriteScreenXPointer ld c, SPRITE_FACING_RIGHT @@ -781,11 +785,11 @@ DoScriptedNPCMovement: ; 5236 (1:5236) ld a, c ld [hl], a ; facing direction call AnimScriptedNPCMovement - ld hl, wcf18 + ld hl, wScriptedNPCWalkCounter dec [hl] ret nz - ld a, $8 - ld [wcf18], a + ld a, 8 + ld [wScriptedNPCWalkCounter], a ld hl, wNPCMovementDirections2Index inc [hl] ret @@ -793,8 +797,8 @@ DoScriptedNPCMovement: ; 5236 (1:5236) InitScriptedNPCMovement: ; 52a6 (1:52a6) xor a ld [wNPCMovementDirections2Index], a - ld a, $8 - ld [wcf18], a + ld a, 8 + ld [wScriptedNPCWalkCounter], a jp AnimScriptedNPCMovement GetSpriteScreenYPointer: ; 52b2 (1:52b2) |