;;==========================================================================;; ;; Joe Zbiciak's Space Patrol for Intellivision. ;; ;; Sound Effects and Music Data ;; ;;==========================================================================;; ;; ======================================================================== ;; ;; SFXI Macro for generating an SFXINI (init) table entry. ;; ;; SFXT Macro for generating an SFXIND (thinker) table entry. ;; ;; ======================================================================== ;; MACRO SFXI fxn, t, n, v, i, b DECLE ($F AND (%b%)) OR (($1E AND (%n%)) SHL 3) OR (($FF AND (%i%)) SHL 8) DECLE (($F AND (%v%)) SHL 12) OR ($FFF AND (%t%)) ENDM MACRO SFXT fxn @@%fxn% DECLE SFX%fxn% FX%fxn% EQU $ - SFXIND ENDM ;; ======================================================================== ;; ;; SFXINI Indirection table for SFX initializers ;; ;; SFXIND Indirection table for SFX thinkers ;; ;; ======================================================================== ;; SFXINI PROC SFXI BFIRE, $03A, $000, $8, $00, $F SFXI SMEXP, $888, $01E, $B, $07, $C ; MC only SFXI JUMP2, $A04, $000, $D, $07, $3 ; ... ECS only or both? SFXI ALIEN, $0BE, $000, $A, $00, $F SFXI LGEXP, $BBB, $01E, $D, $07, $C ; MC only SFXI DING, $098, $000, $D, $34, $F SFXI JUMP, $0BE, $000, $C, $07, $F SFXI PLANT, $55E, $000, $B, $00, $3 ; ECS only SFXI SAUC, $06B, $000, $9, $00, $3 ; ECS only SFXI DIED, $000, $010, $D, $20, $C ; MC only. SFXI SKID, $0AA, $000, $D, $30, $C ; MC only ENDP SFXIND PROC SFXT BFIRE SFXT SMEXP SFXT JUMP2 SFXT ALIEN SFXT LGEXP SFXT DING SFXT JUMP SFXT PLANT SFXT SAUC SFXT DIED SFXT SKID ENDP ;; ======================================================================== ;; ;; SFXPLANT -- Doodle Doodle Deedle Doodle ;; ;; ======================================================================== ;; SFXPLANT PROC ; Note sequence: a, b, c, b, d, b, c, b @@a EQU $2CF*2 @@b EQU $2A7*2 @@c EQU $271*2 @@d EQU $25D*2 MVI@ R4, R1 DECR R4 INCR R1 MVO@ R1, R4 DECR R4 MOVR R1, R0 ANDI #7, R0 BNEQ SFXRET CALL SFXGET SARC R1, 2 SARC R1, 1 ANDI #7, R1 BNEQ @@ok MVII #$A, R2 @@ok ADDI #@@tbl, R1 MVI@ R1, R0 CALL SFXPUT.1 ; Die if there are no plants left MVII #BGMPTBL, R2 @@loop MVI@ R2, R0 CMPI #BGI.plant0, R0 BEQ SFXRET CMPI #BGI.plant1, R0 BEQ SFXRET @@next ADDI #4, R2 CMPI #BGMPTBL+20, R2 BLT @@loop B SFXDIE ; no plants @@tbl DECLE @@a, @@b, @@c, @@b, @@d, @@b, @@c, @@b ENDP ;; ======================================================================== ;; ;; SFXSAUC ;; ;; ======================================================================== ;; SFXSAUC PROC MVI@ R4, R1 DECR R4 MOVR R1, R2 ANDI #7, R1 ADDI #@@tgt, R1 MVI@ R1, R0 ; Get target pitch SUB@ R3, R0 ; Compare against current CMPI #3, R0 ; \ BGT @@same ; |_ If more than +/- 3 CMPI #-3, R0 ; | away, keep advancing BLT @@same ; / towards target. INCR R2 MVO@ R2, R4 DECR R4 ; Get louder/softer ADDI #$B, R3 MVI@ R3, R0 ANDI #4, R1 SUBI #2, R1 SARC R1, 1 SUBR R1, R0 MVO@ R0, R3 SUBI #$B, R3 ; Die if there are no saucers left MVI WAVE, R0 TSTR R0 BEQ SFXDIE B SFXRET ; R0 contains delta between target and actual @@same MVI SFXSTMP, R1 XORI #$80, R1 SUBI #$80, R1 SARC R0, 2 SARC R0, 1 ADDR R1, R0 BMI @@nrnd SARC R0, 1 ADCR R0 MVO R0, SFXSTMP SARC R0, 1 ADCR R0 B @@doit @@nrnd SARC R0, 1 MVO R0, SFXSTMP SARC R0, 1 @@doit ADD@ R3, R0 MVO@ R0, R3 B SFXRET @@tgt DECLE $87, $AA, $8F, $B4, $87, $AA, $8F, $BE ENDP ;; ======================================================================== ;; ;; SFXJUMP/SFXJUMP2 ;; ;; Rapidly descending ramp. Tone only. ;; ;; ======================================================================== ;; SFXJUMP PROC CALL SFXGET MVI@ R4, R1 ; Get state byte DECR R4 DECR R1 ; Count down BPL @@novol ; No expiry, no volume update DECR R2 ; Decrement volume MVII #6, R1 ; Restart counter @@novol: MVO@ R1, R4 ; Store updated counter DECR R4 ADDI #2, R0 ; Go down one period CMPI #$140, R0 ; \_ Die at end BGT SFXDIE ; / B SFXPUT ; Update pitch/volume and leave ENDP ;; ======================================================================== ;; ;; SFXSMEXP/SFXLGEXP ;; ;; Explosions: Enveloped noise modulated by random tones. ;; ;; ======================================================================== ;; SFXSMEXP SFXLGEXP PROC CALL SFXGET ADDI #$0400, R0 CMPI #$0100, R0 BC SFXJUMP2.1 MVII #1, R0 @@ok: B SFXJUMP2.1 ENDP ;; ======================================================================== ;; ;; SFXJUMP2 ;; ;; Second half of the JUMP sound effect -- Enveloped low constant pitch. ;; ;; ======================================================================== ;; SFXJUMP2 PROC CALL SFXGET @@1 MVI@ R4, R1 ; Get state byte DECR R4 DECR R1 ; Count down BPL @@novol ; No expiry, no volume update MVII #6, R1 ; Restart counter DECR R2 ; Decr volume every 7 tics CMPI #2, R2 ; Die when it reaches 2 BEQ SFXDIE @@novol: MVO@ R1, R4 ; Store updated counter DECR R4 B SFXPUT ; Update pitch/vol and leave ENDP ;; ======================================================================== ;; ;; SFXDIED ;; ;; Tank fall down go boom. Four staccato blasts of noise that fade out. ;; ;; ======================================================================== ;; SFXDIED PROC MVII #$07, R0 ; \_ Special case: Own MVO R0, $1F8 ; / the entire PSG0 MOVR R4, R2 ; MVI@ R2, R0 ; CMPI #7, R0 BLT @@fade DECR R0 MVO@ R0, R2 SARC R0, 1 BC SFXRET ADDI #$B, R3 MVI@ R3, R1 ANDI #$0F, R1 ; Some PSGs set bits 6..7 SUBI #$B, R3 DECR R1 CMPI #9, R1 BGT @@ok MVII #13, R1 @@ok: MVO R1, $1FB MVO R1, $1FC MVO R1, $1FD B SFXRET @@fade: DECR R0 BPL @@leave MVII #6, R0 MVO@ R0, R2 ADDI #$B, R3 MVI@ R3, R1 ANDI #$0F, R1 ; Some PSGs set bits 6..7 SUBI #$B, R3 DECR R1 BPL @@ok MVII #$38, R0 MVO R0, $1F8 B SFXDIE @@leave MVO@ R0, R2 B SFXRET ENDP ;; ======================================================================== ;; ;; SFXBFIRE ;; ;; ======================================================================== ;; SFXBFIRE PROC MVI@ R3, R0 ; Get pitch SUBI #2, R0 ; Fast decreasing rate CMPI #$28, R0 ; End after $2C BLT SFXDIE MVO@ R0, R3 ; Otherwise update B SFXRET ENDP ;; ======================================================================== ;; ;; SFXALIEN ;; ;; ======================================================================== ;; SFXALIEN PROC MVI@ R4, R1 ; \ INCR R1 ; | MOVR R1, R2 ; | Increment state byte ANDI #3, R2 ; | CMPI #3, R2 ADCR R1 @@ok: DECR R4 ; | MVO@ R1, R4 ; / DECR R4 CMPI #80, R1 ; \__ Quit after 60 tics BGE SFXDIE ; / ANDI #1, R2 ; \__ Update every 4 counts BEQ SFXRET ; / (4 tics/2 tics) SLR R1, 2 ; Divide count by 4 CALL SFXGET MOVR R1, R2 ; \ ADDI #@@vtbl,R2 ; |- Get volume (20 steps) MVI@ R2, R2 ; / ANDI #3, R1 ; Alternate among 4 tones ADDI #@@ttbl,R1 ; \_ Get tone (4 tones) MVI@ R1, R0 ; / B SFXPUT @@vtbl DECLE $A,$A,$A,$A,9,9,9,8,8,8,7,7,7,6,6,5,4,3,2,0 @@ttbl DECLE $0A0,$0BE,$0E2,$0BE ENDP ;; ======================================================================== ;; ;; SFXDING ;; ;; ======================================================================== ;; SFXDING PROC MOVR R4, R2 MVI@ R2, R0 DECR R0 MVO@ R0, R2 SLR R0, 2 BEQ SFXDIE ADDI #$B, R3 MVO@ R0, R3 SUBI #$B, R3 B SFXRET ENDP ;; ======================================================================== ;; ;; SFXSKID ;; ;; ======================================================================== ;; SFXSKID PROC MVI@ R3, R0 ; SUBI #$40, R0 ; ANDI #$7F, R0 ; ADDI #$20, R0 XORI #$33, R0 MVO@ R0, R3 MVI@ R4, R0 DECR R4 DECR R0 BMI @@switch MVO@ R0, R4 DECR R4 B SFXRET @@switch: MVII #FXDIED,R0 MVO R0, SFXQ B SFXDIE ENDP ;* ======================================================================== *; ;* This program is free software; you can redistribute it and/or modify *; ;* it under the terms of the GNU General Public License as published by *; ;* the Free Software Foundation; either version 2 of the License, or *; ;* (at your option) any later version. *; ;* *; ;* This program is distributed in the hope that it will be useful, *; ;* but WITHOUT ANY WARRANTY; without even the implied warranty of *; ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *; ;* General Public License for more details. *; ;* *; ;* You should have received a copy of the GNU General Public License *; ;* along with this program; if not, write to the Free Software *; ;* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *; ;* ======================================================================== *; ;* Copyright (c) 2006, Joseph Zbiciak *; ;* ======================================================================== *;