ref: f750d4f4185529cfb440ac7825d202ebcf160766
dir: /engine/overworld/map_object_action.asm/
ObjectActionPairPointers: ; 445f ; entries correspond to OBJECT_ACTION_* constants dw SetFacingStanding, SetFacingStanding dw SetFacingStandAction, SetFacingCurrent dw SetFacingStepAction, SetFacingCurrent dw SetFacingBumpAction, SetFacingCurrent dw SetFacingCounterclockwiseSpin, SetFacingCurrent dw SetFacingCounterclockwiseSpin2, SetFacingStanding dw SetFacingFish, SetFacingFish dw SetFacingShadow, SetFacingStanding dw SetFacingEmote, SetFacingEmote dw SetFacingBigDollSym, SetFacingBigDollSym dw SetFacingBounce, SetFacingFreezeBounce dw SetFacingWeirdTree, SetFacingCurrent dw SetFacingBigDollAsym, SetFacingBigDollAsym dw SetFacingBigDoll, SetFacingBigDoll dw SetFacingBoulderDust, SetFacingStanding dw SetFacingGrassShake, SetFacingStanding dw SetFacingSkyfall, SetFacingCurrent ; 44a3 SetFacingStanding: ; 44a3 ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], STANDING ret ; 44aa SetFacingCurrent: ; 44aa call GetSpriteDirection or FACING_STEP_DOWN_0 ; useless ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], a ret ; 44b5 SetFacingStandAction: ; 44b5 ld hl, OBJECT_FACING_STEP add hl, bc ld a, [hl] and 1 jr nz, SetFacingStepAction jp SetFacingCurrent ; 44c1 SetFacingStepAction: ; 44c1 ld hl, OBJECT_FLAGS1 add hl, bc bit SLIDING, [hl] jp nz, SetFacingCurrent ld hl, OBJECT_STEP_FRAME add hl, bc ld a, [hl] inc a and %00001111 ld [hl], a rrca rrca and %00000011 ld d, a call GetSpriteDirection or FACING_STEP_DOWN_0 ; useless or d ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], a ret ; 44e4 SetFacingSkyfall: ; 44e4 ld hl, OBJECT_FLAGS1 add hl, bc bit SLIDING, [hl] jp nz, SetFacingCurrent ld hl, OBJECT_STEP_FRAME add hl, bc ld a, [hl] add 2 and %00001111 ld [hl], a rrca rrca and %00000011 ld d, a call GetSpriteDirection or FACING_STEP_DOWN_0 ; useless or d ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], a ret ; 4508 SetFacingBumpAction: ; 4508 ld hl, OBJECT_FLAGS1 add hl, bc bit SLIDING, [hl] jp nz, SetFacingCurrent ld hl, OBJECT_STEP_FRAME add hl, bc inc [hl] ld a, [hl] rrca rrca rrca and %00000011 ld d, a call GetSpriteDirection or FACING_STEP_DOWN_0 ; useless or d ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], a ret ; 4529 SetFacingCounterclockwiseSpin: ; 4529 call CounterclockwiseSpinAction ld hl, OBJECT_FACING add hl, bc ld a, [hl] or FACING_STEP_DOWN_0 ; useless ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], a ret ; 4539 SetFacingCounterclockwiseSpin2: ; 4539 call CounterclockwiseSpinAction jp SetFacingStanding ; 453f CounterclockwiseSpinAction: ; 453f ; Here, OBJECT_STEP_FRAME consists of two 2-bit components, ; using only bits 0,1 and 4,5. ; bits 0,1 is a timer (4 overworld frames) ; bits 4,5 determines the facing - the direction is counterclockwise. ld hl, OBJECT_STEP_FRAME add hl, bc ld a, [hl] and %11110000 ld e, a ld a, [hl] inc a and %00001111 ld d, a cp 4 jr c, .ok ld d, 0 ld a, e add $10 and %00110000 ld e, a .ok ld a, d or e ld [hl], a swap e ld d, 0 ld hl, .Directions add hl, de ld a, [hl] ld hl, OBJECT_FACING add hl, bc ld [hl], a ret ; 456a .Directions: ; 456a db OW_DOWN, OW_RIGHT, OW_UP, OW_LEFT ; 456e SetFacingFish: ; 456e call GetSpriteDirection rrca rrca add FACING_FISH_DOWN ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], a ret ; 457b SetFacingShadow: ; 457b ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], FACING_SHADOW ret ; 4582 SetFacingEmote: ; 4582 emote ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], FACING_EMOTE ret ; 4589 SetFacingBigDollSym: ; 4589 ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], FACING_BIG_DOLL_SYM ret ; 4590 SetFacingBounce: ; 4590 ld hl, OBJECT_STEP_FRAME add hl, bc ld a, [hl] inc a and %00001111 ld [hl], a and %00001000 jr z, SetFacingFreezeBounce ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], FACING_STEP_UP_0 ret ; 45a4 SetFacingFreezeBounce: ; 45a4 ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], FACING_STEP_DOWN_0 ret ; 45ab SetFacingWeirdTree: ; 45ab ld hl, OBJECT_STEP_FRAME add hl, bc ld a, [hl] inc a ld [hl], a and %00001100 rrca rrca add FACING_WEIRD_TREE_0 ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], a ret ; 45be SetFacingBigDollAsym: ; 45be ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], FACING_BIG_DOLL_ASYM ret ; 45c5 SetFacingBigDoll: ; 45c5 ld a, [wVariableSprites + SPRITE_BIG_DOLL - SPRITE_VARS] ld d, FACING_BIG_DOLL_SYM ; symmetric cp SPRITE_BIG_SNORLAX jr z, .ok cp SPRITE_BIG_LAPRAS jr z, .ok ld d, FACING_BIG_DOLL_ASYM ; asymmetric .ok ld hl, OBJECT_FACING_STEP add hl, bc ld [hl], d ret ; 45da SetFacingBoulderDust: ; 45da ld hl, OBJECT_STEP_FRAME add hl, bc inc [hl] ld a, [hl] ld hl, OBJECT_FACING_STEP add hl, bc and 2 ld a, FACING_BOULDER_DUST_1 jr z, .ok inc a ; FACING_BOULDER_DUST_2 .ok ld [hl], a ret ; 45ed SetFacingGrassShake: ; 45ed ld hl, OBJECT_STEP_FRAME add hl, bc inc [hl] ld a, [hl] ld hl, OBJECT_FACING_STEP add hl, bc and 4 ld a, FACING_GRASS_1 jr z, .ok inc a ; FACING_GRASS_2 .ok ld [hl], a ret ; 4600