Pyjamarama: Routine at F336

F336: Invaders : Initialise

Used by the routines at Wally_Resurrect, Invaders_NextStage and Action13_EnterAcrade.

Input

Output

Invaders_Init

F336

LD HL,(Inv_TypePtr)

F339

LD DE,Inv_FirstInvType

F33C

AND A

F33D

SBC HL,DE

F33F

LD A,L

F340

RR A

F342

ADD A,$1D

F344

LD (Wally_RoomNo),A

F347

CALL ScreenClearEffect

F34A

CALL Draw_CeilingWallFloor

Draw the room's border.

F34D

LD DE,$0F00

Draw left hand door in the wall.

F350

LD HL,item_dc31

F353

CALL FurnitureDraw

F356

CALL Wally_Draw

Draw Wally.

F359

LD HL,Invaders_Data

Draw each invader.

F35C

LD B,$18

Invaders_Init_0

F35E

LD A,(HL)

F35F

LD E,A

F360

INC HL

F361

LD D,(HL)

F362

INC HL

F363

CP $FE

F365

JR Z,Invaders_Init_3

F367

LD (BitmapX),DE

F36B

PUSH HL

F36C

LD DE,(Inv_DataPtr)

F370

INC DE

F371

AND A

F372

SBC HL,DE

F374

JR NC,Invaders_Init_1

F376

LD A,(Inv_NextFrame)

F379

JR Invaders_Init_2

Invaders_Init_1

F37B

LD A,(Inv_CurrentFrame)

Invaders_Init_2

F37E

POP HL

F37F

CALL Bitmap16Draw

Invaders_Init_3

F382

DJNZ Invaders_Init_0

F384

LD HL,Arcade_ExplosionSlots

Reset all explosion animations to 'not active'.

Invaders_Init_4

F387

LD A,(HL)

Check for end of data marker.

F388

CP $FE

F38A

JR Z,Invaders_Init_5

F38C

LD (HL),$FF

F38E

INC HL

F38F

INC HL

F390

INC HL

F391

JR Invaders_Init_4

Invaders_Init_5

F393

LD B,$03

Number of possible bombs.

F395

LD HL,Arcade_BombData

Reset all bombs to 'not active'.

Invaders_Init_6

F398

LD (HL),$FF

F39A

INC HL

F39B

INC HL

F39C

INC HL

F39D

DJNZ Invaders_Init_6

F39F

RET