summaryrefslogtreecommitdiff
path: root/engine/events/field_moves.asm
blob: 130ec411d53fed73890a0e87ada04670120b7572 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
FIELDMOVE_GRASS EQU $80
FIELDMOVE_TREE EQU $84
FIELDMOVE_FLY EQU $84

PlayWhirlpoolSound:
	call WaitSFX
	ld de, SFX_SURF
	call PlaySFX
	call WaitSFX
	ret

BlindingFlash:
	farcall FadeOutPalettes
	ld hl, wStatusFlags
	set STATUSFLAGS_FLASH_F, [hl]
	farcall ReplaceTimeOfDayPals
	farcall UpdateTimeOfDayPal
	ld b, SCGB_MAPPALS
	call GetSGBLayout
	farcall LoadOW_BGPal7
	farcall FadeInPalettes
	ret

ShakeHeadbuttTree:
	farcall ClearSpriteAnims
	ld de, CutGrassGFX
	ld hl, vTiles0 tile FIELDMOVE_GRASS
	lb bc, BANK(CutGrassGFX), 4
	call Request2bpp
	ld de, HeadbuttTreeGFX
	ld hl, vTiles0 tile FIELDMOVE_TREE
	lb bc, BANK(HeadbuttTreeGFX), 8
	call Request2bpp
	call Cut_Headbutt_GetPixelFacing
	ld a, SPRITE_ANIM_INDEX_HEADBUTT
	call InitSpriteAnimStruct
	ld hl, SPRITEANIMSTRUCT_TILE_ID
	add hl, bc
	ld [hl], FIELDMOVE_TREE
	ld a, 36 * SPRITEOAMSTRUCT_LENGTH
	ld [wCurSpriteOAMAddr], a
	farcall DoNextFrameForAllSprites
	call HideHeadbuttTree
	ld a, 32
	ld [wFrameCounter], a
	call WaitSFX
	ld de, SFX_SANDSTORM
	call PlaySFX
.loop
	ld hl, wFrameCounter
	ld a, [hl]
	and a
	jr z, .done
	dec [hl]
	ld a, 36 * SPRITEOAMSTRUCT_LENGTH
	ld [wCurSpriteOAMAddr], a
	farcall DoNextFrameForAllSprites
	call DelayFrame
	jr .loop

.done
	call OverworldTextModeSwitch
	call WaitBGMap
	xor a
	ldh [hBGMapMode], a
	farcall ClearSpriteAnims
	ld hl, wVirtualOAMSprite36
	ld bc, wVirtualOAMEnd - wVirtualOAMSprite36
	xor a
	call ByteFill
	ld de, Font
	ld hl, vTiles1
	lb bc, BANK(Font), 12
	call Get1bpp
	call UpdatePlayerSprite
	ret

HeadbuttTreeGFX:
INCBIN "gfx/overworld/headbutt_tree.2bpp"

HideHeadbuttTree:
	xor a
	ldh [hBGMapMode], a
	ld a, [wPlayerDirection]
	and %00001100
	srl a
	ld e, a
	ld d, 0
	ld hl, TreeRelativeLocationTable
	add hl, de
	ld a, [hli]
	ld h, [hl]
	ld l, a

	ld a, $05 ; grass block
	ld [hli], a
	ld [hld], a
	ld bc, SCREEN_WIDTH
	add hl, bc
	ld [hli], a
	ld [hld], a
	call WaitBGMap
	xor a
	ldh [hBGMapMode], a
	ret

TreeRelativeLocationTable:
	dwcoord 8,     8 + 2 ; RIGHT
	dwcoord 8,     8 - 2 ; LEFT
	dwcoord 8 - 2, 8     ; DOWN
	dwcoord 8 + 2, 8     ; UP

OWCutAnimation:
	; Animation index in e
	; 0: Split tree in half
	; 1: Mow the lawn
	ld a, e
	and 1
	ld [wJumptableIndex], a
	call .LoadCutGFX
	call WaitSFX
	ld de, SFX_PLACE_PUZZLE_PIECE_DOWN
	call PlaySFX
.loop
	ld a, [wJumptableIndex]
	bit 7, a
	jr nz, .finish
	ld a, 36 * SPRITEOAMSTRUCT_LENGTH
	ld [wCurSpriteOAMAddr], a
	callfar DoNextFrameForAllSprites
	call OWCutJumptable
	call DelayFrame
	jr .loop

.finish
	ret

.LoadCutGFX:
	callfar ClearSpriteAnims ; pointless to farcall
	ld de, CutGrassGFX
	ld hl, vTiles0 tile FIELDMOVE_GRASS
	lb bc, BANK(CutGrassGFX), 4
	call Request2bpp
	ld de, CutTreeGFX
	ld hl, vTiles0 tile FIELDMOVE_TREE
	lb bc, BANK(CutTreeGFX), 4
	call Request2bpp
	ret

CutTreeGFX:
INCBIN "gfx/overworld/cut_tree.2bpp"

CutGrassGFX:
INCBIN "gfx/overworld/cut_grass.2bpp"

OWCutJumptable:
	jumptable .dw, wJumptableIndex

.dw
	dw Cut_SpawnAnimateTree
	dw Cut_SpawnAnimateLeaves
	dw Cut_StartWaiting
	dw Cut_WaitAnimSFX

Cut_SpawnAnimateTree:
	call Cut_Headbutt_GetPixelFacing
	ld a, SPRITE_ANIM_INDEX_CUT_TREE ; cut tree
	call InitSpriteAnimStruct
	ld hl, SPRITEANIMSTRUCT_TILE_ID
	add hl, bc
	ld [hl], FIELDMOVE_TREE
	ld a, 32
	ld [wFrameCounter], a
; Cut_StartWaiting
	ld hl, wJumptableIndex
	inc [hl]
	inc [hl]
	ret

Cut_SpawnAnimateLeaves:
	call Cut_GetLeafSpawnCoords
	xor a
	call Cut_SpawnLeaf
	ld a, $10
	call Cut_SpawnLeaf
	ld a, $20
	call Cut_SpawnLeaf
	ld a, $30
	call Cut_SpawnLeaf
	ld a, 32 ; frames
	ld [wFrameCounter], a
; Cut_StartWaiting
	ld hl, wJumptableIndex
	inc [hl]
	ret

Cut_StartWaiting:
	ld a, 1
	ldh [hBGMapMode], a
; Cut_WaitAnimSFX
	ld hl, wJumptableIndex
	inc [hl]

Cut_WaitAnimSFX:
	ld hl, wFrameCounter
	ld a, [hl]
	and a
	jr z, .finished
	dec [hl]
	ret

.finished
	ld hl, wJumptableIndex
	set 7, [hl]
	ret

Cut_SpawnLeaf:
	push de
	push af
	ld a, SPRITE_ANIM_INDEX_LEAF ; leaf
	call InitSpriteAnimStruct
	ld hl, SPRITEANIMSTRUCT_TILE_ID
	add hl, bc
	ld [hl], FIELDMOVE_GRASS
	ld hl, SPRITEANIMSTRUCT_VAR3
	add hl, bc
	ld [hl], $4
	pop af
	ld hl, SPRITEANIMSTRUCT_VAR1
	add hl, bc
	ld [hl], a
	pop de
	ret

Cut_GetLeafSpawnCoords:
	ld de, 0
	ld a, [wMetatileStandingX]
	bit 0, a
	jr z, .left_side
	set 0, e
.left_side
	ld a, [wMetatileStandingY]
	bit 0, a
	jr z, .top_side
	set 1, e
.top_side
	ld a, [wPlayerDirection]
	and %00001100
	add e
	ld e, a
	ld hl, .Coords
	add hl, de
	add hl, de
	ld e, [hl]
	inc hl
	ld d, [hl]
	ret

.Coords:
	dbpixel 11, 12 ; facing down,  top left
	dbpixel  9, 12 ; facing down,  top right
	dbpixel 11, 14 ; facing down,  bottom left
	dbpixel  9, 14 ; facing down,  bottom right

	dbpixel 11,  8 ; facing up,    top left
	dbpixel  9,  8 ; facing up,    top right
	dbpixel 11, 10 ; facing up,    bottom left
	dbpixel  9, 10 ; facing up,    bottom right

	dbpixel  7, 12 ; facing left,  top left
	dbpixel  9, 12 ; facing left,  top right
	dbpixel  7, 10 ; facing left,  bottom left
	dbpixel  9, 10 ; facing left,  bottom right

	dbpixel 11, 12 ; facing right, top left
	dbpixel 13, 12 ; facing right, top right
	dbpixel 11, 10 ; facing right, bottom left
	dbpixel 13, 10 ; facing right, bottom right

Cut_Headbutt_GetPixelFacing:
	ld a, [wPlayerDirection]
	and %00001100
	srl a
	ld e, a
	ld d, 0
	ld hl, .Coords
	add hl, de
	ld e, [hl]
	inc hl
	ld d, [hl]
	ret

.Coords:
	dbpixel 10, 13
	dbpixel 10,  9
	dbpixel  8, 11
	dbpixel 12, 11

FlyFromAnim:
	call DelayFrame
	ld a, [wVramState]
	push af
	xor a
	ld [wVramState], a
	call FlyFunction_InitGFX
	depixel 10, 10, 4, 0
	ld a, SPRITE_ANIM_INDEX_RED_WALK
	call InitSpriteAnimStruct
	ld hl, SPRITEANIMSTRUCT_TILE_ID
	add hl, bc
	ld [hl], FIELDMOVE_FLY
	ld hl, SPRITEANIMSTRUCT_ANIM_SEQ_ID
	add hl, bc
	ld [hl], SPRITE_ANIM_SEQ_FLY_FROM
	ld a, 128
	ld [wFrameCounter], a
.loop
	ld a, [wJumptableIndex]
	bit 7, a
	jr nz, .exit
	ld a, 0 * SPRITEOAMSTRUCT_LENGTH
	ld [wCurSpriteOAMAddr], a
	callfar DoNextFrameForAllSprites
	call FlyFunction_FrameTimer
	call DelayFrame
	jr .loop

.exit
	pop af
	ld [wVramState], a
	ret

FlyToAnim:
	call DelayFrame
	ld a, [wVramState]
	push af
	xor a
	ld [wVramState], a
	call FlyFunction_InitGFX
	depixel 31, 10, 4, 0
	ld a, SPRITE_ANIM_INDEX_RED_WALK
	call InitSpriteAnimStruct
	ld hl, SPRITEANIMSTRUCT_TILE_ID
	add hl, bc
	ld [hl], FIELDMOVE_FLY
	ld hl, SPRITEANIMSTRUCT_ANIM_SEQ_ID
	add hl, bc
	ld [hl], SPRITE_ANIM_SEQ_FLY_TO
	ld hl, SPRITEANIMSTRUCT_VAR4
	add hl, bc
	ld [hl], 11 * 8
	ld a, 64
	ld [wFrameCounter], a
.loop
	ld a, [wJumptableIndex]
	bit 7, a
	jr nz, .exit
	ld a, 0 * SPRITEOAMSTRUCT_LENGTH
	ld [wCurSpriteOAMAddr], a
	callfar DoNextFrameForAllSprites
	call FlyFunction_FrameTimer
	call DelayFrame
	jr .loop

.exit
	pop af
	ld [wVramState], a
	call .RestorePlayerSprite_DespawnLeaves
	ret

.RestorePlayerSprite_DespawnLeaves:
	ld hl, wVirtualOAMSprite00TileID
	xor a
	ld c, 4
.OAMloop
	ld [hli], a ; tile id
rept SPRITEOAMSTRUCT_LENGTH - 1
	inc hl
endr
	inc a
	dec c
	jr nz, .OAMloop
	ld hl, wVirtualOAMSprite04
	ld bc, wVirtualOAMEnd - wVirtualOAMSprite04
	xor a
	call ByteFill
	ret

FlyFunction_InitGFX:
	callfar ClearSpriteAnims
	ld de, CutGrassGFX
	ld hl, vTiles0 tile FIELDMOVE_GRASS
	lb bc, BANK(CutGrassGFX), 4
	call Request2bpp
	ld a, [wCurPartyMon]
	ld hl, wPartySpecies
	ld e, a
	ld d, 0
	add hl, de
	ld a, [hl]
	ld [wTempIconSpecies], a
	ld e, FIELDMOVE_FLY
	farcall FlyFunction_GetMonIcon
	xor a
	ld [wJumptableIndex], a
	ret

FlyFunction_FrameTimer:
	call .SpawnLeaf
	ld hl, wFrameCounter
	ld a, [hl]
	and a
	jr z, .exit
	dec [hl]
	cp $40
	ret c
	and $7
	ret nz
	ld de, SFX_FLY
	call PlaySFX
	ret

.exit
	ld hl, wJumptableIndex
	set 7, [hl]
	ret

.SpawnLeaf:
	ld hl, wFrameCounter2
	ld a, [hl]
	inc [hl]
	and $7
	ret nz
	ld a, [hl]
	and (6 * 8) >> 1
	sla a
	add 8 * 8 ; gives a number in [$40, $50, $60, $70]
	ld d, a
	ld e, 0
	ld a, SPRITE_ANIM_INDEX_FLY_LEAF
	call InitSpriteAnimStruct
	ld hl, SPRITEANIMSTRUCT_TILE_ID
	add hl, bc
	ld [hl], FIELDMOVE_GRASS
	ret