diff --git a/aard1.asm b/aard1.asm new file mode 100755 index 0000000..af203eb --- /dev/null +++ b/aard1.asm @@ -0,0 +1,2040 @@ + ; + ; Aardvark + ; + ; by Oscar Toledo G. (nanochess) + ; + ; Creation date: Sep/02/2016. + ; Revision date: Dec/02/2016. Added holes and playfield mouth/eggs. + ; Revision date: Dec/03/2016. Added enemy bitmaps and color. + ; Revision date: Dec/04/2016. Tongue can be started/reverted with joystick. + ; Added eggs in board. + ; Revision date: Dec/06/2016. Tongue rules more close to arcade. Queen ants + ; are now fixed and flashing. Counts eaten eggs + ; and score. Displays score. + ; Revision date: Dec/07/2016. Enemies are filled randomly, also two speeds. + ; Aardvark centered. Dots are thicker now (uses + ; 2 rows). Aardvark walks slower. + ; Revision date: Dec/11/2016. Now is main bank of 8K ROM. Worm appears at + ; tongue tip level. Player can eat ants and + ; worms. + ; Revision date: Dec/12/2016. Enemy collisions now are checked here to avoid + ; too many cycles used in display. + ; Revision date: Jan/18/2016. Added Ranz des Vaches and Mountain King music. + ; Revision date: Jan/19/2016. Corrected lack of feet in aardvark. Added + ; tongue touched music. Added sound effects. + ; Aardvark exits level when all eggs eaten. + ; Remade code for collision of tongue. Corrected + ; bug where eating right queen would delete left + ; queen. + ; Revision date: May/27/2017. Moved all display code to bank 0, this makes it + ; to work with Atari Flashback Portable. + ; Revision date: Oct/02/2017. Sun moves to left. Counts level. + ; Revision date: Oct/08/2017. Added tongue retrain sound effect. Changes hole + ; position randomly. + ; Revision date: Oct/09/2017. Lives counting. Avoids worm appearing over ant. + ; Going down has priority over going left/right + ; but tries also left/right. New enemies: red + ; ant and caterpillar. Only one worm can appear + ; at any moment. Added more difficulty per level. + ; Calculates bonus. New enemy: spider. + ; Revision date: Oct/10/2017. Solved bug where worm would overwrite spider. + ; Solved bug where tongue removed eggs without + ; adjusting egg count. Solved bug where 150 points + ; sprites wouldn't disappear. Added click sound + ; effect for sunset. Added title screen. + ; Revision date: Nov/01/2017. Changed holes1-6 to bitmap interpretation. + ; Revision date: Nov/02/2017. Moved eggs and tongue to extra RAM (Sara chip). + ; Revision date: Nov/03/2017. Renamed level as antHill. Now tongue and eggs + ; bitmaps are intermixed (new display kernel). + ; Sprites now appear at right places. Now hole + ; map is aligned with kernelLst. Updated egg + ; count. Configurable X-limit. + ; Revision date: Nov/04/2017. Relocated direction bit. Collisions working + ; again. + ; Revision date: Nov/05/2017. Corrected worm catch. Score resets REFP0/1. + ; Collision working again. Supports player + ; reflection in display kernel. + ; + + ; Next available label: aa128 + ; Free label: aa84, aa85 + + ; TODO: + ; * Bug: live counting isn't working right. + ; * Bug: egg counting isn't working right. + ; * Tune collisions. + ; * Check if spider is working. + ; * Bug: slight bam tone after winning music. + ; * Bug: spider is slow to appear or doesn't appear. + ; * Handle holes like a bitset instead of coordinate. + ; * Allow backtracking (using up) + ; * Test in MAME for movement details + ; * Clouds (using PF) + ; * Maybe new aardvark sprite, maybe multicolor, maybe 48px: + ; * Aardvark moving ears. + ; * Aardvark sprite sitting when tongue is touched. + ; * Aardvark walking. + ; * Options in title screen. + ; * Starting level. + ; * Message "Press start" in title screen. + ; * Intermediate screen (losing live and completing level): + ; ants + ; x worms + ; * 10 = bonus + ; * Game over (shown below intermediate screen) + ; * Give an extra live each 20000 points. + + ; Differences versus arcade: + ; * Arcade has 8 tunnels, we have 7. + ; * Red ant appears at tunnel 4, in arcade is 5. + ; * Centipede appears at tunnel 5, in arcade is 6. + ; * Worm can appear at tunnel 7 in arcade (we have no space in screen) + + ; Things in unreleased ROM: + ; * Sun timer using a digit counter. + ; * White line after first bottom section + ; * Level and time in second bottom section (separated) + + ; Game in brief: + ; * Move tongue in joystick direction. + ; * Press button to retrain tongue. + ; * Bugs appear randomly on both sides. + ; * Bug touching tongue -> lost life. + ; * Tongue touching bug from behind -> score. + ; * Spider descends from top to bottom, if touch tip -> lost life. + ; * If tongue eats queen -> all enemies in board disappear. + ; * Eating all dots -> level change. + ; * Each level has different configuration of holes in floors. + ; * Ant: 100 points, appears starting in level 1, tunnels 1-4 + ; * Red ant: 150 points, appears starting in level 2, tunnel 5 + ; * Centipede: 150 points, appears starting in level 3, tunnel 6 + ; * Worm: 200 points, appears always at level of tongue. + ; * Only enemy that can appear at tunnel 7. + ; * Tongue cannot move in tunnel 8, nor there are points, only can eat queen. + ; * On restarting level the holes configuration changes. + ; * On restarting level preserves darkness even if the initial animation is + ; done again. + ; * Sun starts more at left per level. Since level 22 always starts barely + ; some pixels from left. + ; * Extra lives each 20000 points + + processor 6502 + + include aardm.asm + + ; + ; Set object in X + ; A = X position + ; First argument = Object to position (0=P0, 1=P1, 2=M0, 3=M1, 4=BALL) + ; + MAC set_x_position + sta WSYNC ; 0- Start line synchro + sec ; 2- Set carry flag (avoids it in loop) +.AE2: sbc #15 ; 4- Uses required time dividing A by 15 + bcs .AE2 ; 6/7 - 11/16/21/26/31/36/41/46/51/56/61/66 + tay ; 8 + lda fine_adjustment-$f1,y; 13 - Eats 5 cycles crossing page + sta HMP0+{1} + nop + sta RESP0+{1} ; 21/26/31/36/41/46/51/56/61/66/71 - "big" positioning + ENDM + + org $f000 ; ROM start address (4K) + + REPEAT 256 + .byte $4f + REPEND + +START: + sta bank1 ; Ghost + sei ; Disable interruptions + cld ; Disable decimal mode + jmp START2 + +ba0: sta bank0 + jmp 0 ; Ghost + + sta bank1 ; Ghost + jmp ba1 + +ba2: sta bank0 + jmp 0 ; Ghost + + sta bank1 + jmp ba3 + +START2: + ldy rand + ; Clean up the memory + ldx #$ff ; Load X with $FF... + txs ; ...copy to stack pointer + lda #0 ; Load zero in accumulator +AE1: sta 0,X ; Save in address 0 plus X + dex ; Decrement X + bne AE1 ; Repeat until X is zero. + sta SWACNT ; Allow to read joysticks + sta SWBCNT ; Allow to read buttons + tsx ; ldx #$ff + stx prev_button + sty rand + + lda rand + sta level_seed + +title_screen: + lda #20 + sta temp1 + jmp ba2 + +ba3: + lda #0 + sta antHill + lda #4 + sta lives + + lda #0 + sta score + sta score+1 + sta score+2 + + ldx #tongue_size*2-12 +aa124: lda #0 + sta tongue1+W,x + sta tongue1+W+1,x + sta tongue1+W+2,x + sta tongue1+W+3,x + sta tongue1+W+4,x + sta tongue1+W+5,x + txa + sec + sbc #12 + tax + bpl aa124 + + ; + ; Goes to next level + ; +next_level: + inc antHill + inc level_seed + + ; + ; Setup starting sun position + ; + lda antHill + asl + bmi aa82 + asl + bpl aa83 +aa82: lda #$80 +aa83: eor #$ff + adc #$98 + sta sun_pos + + lda #$00 + sta COLUBK ; Background color + + ; VERTICAL_SYNC + lda #2 + sta VSYNC ; Start vertical synchro + sta WSYNC ; Wait for 3 lines + sta WSYNC + sta WSYNC + ; + lda #43 + sta TIM64T + lda #0 + sta VSYNC ; Stop vertical synchro + + ldx #tongue_size*2-12 +aa29: lda #0 + sta tongue1+W,x + sta tongue1+W+1,x + sta tongue1+W+2,x + sta tongue1+W+3,x + sta tongue1+W+4,x + sta tongue1+W+5,x + cpx #0 + beq .+4 + lda #$aa + sta eggs1+W,x + sta eggs1+W+2,x + sta eggs1+W+3,x + sta eggs1+W+5,x + lsr + sta eggs1+W+1,x + sta eggs1+W+4,x + txa + sec + sbc #12 + tax + bpl aa29 + + lda #7*20 + sta eggs + + ; + ; Setup queen ants + ; + lda #sprite_queen_ant+ENEMY_DIR_MASK + sta enemy0_t + sta enemy8_t + lda #$2e + sta enemy0_x + lda #$66 + sta enemy8_x + + jmp aa73 + +restart_level: + inc level_seed + lda #$00 + sta effect0 + sta effect1 + sta ants_eaten + sta worms_eaten + sta COLUBK ; Background color + + ; VERTICAL_SYNC + lda #2 + sta VSYNC ; Start vertical synchro + sta WSYNC ; Wait for 3 lines + sta WSYNC + sta WSYNC + ; + lda #43 + sta TIM64T + lda #0 + sta VSYNC ; Stop vertical synchro + +aa73: + lda #1 ; Ranz des Vaches (Rossini) + sta tracker + lda #1 ; Start immediately + sta tracker_c + + lda #6 + sta aa_x_pos + lda #1 + sta timer + lda #0 + sta filling + sta flags + ; + ; Delete tongue and delete also any eggs under + ; + ldx #tongue_size*2-12 +aa69: + ldy #5 +aa80: lda tongue1+R,x + eor #$ff + and eggs1+R,x + sta eggs1+W,x + lda #0 + sta tongue1+W,x + inx + dey + bpl aa80 + txa + sec + sbc #18 + tax + bpl aa69 + + lda #0 + sta enemy1_t + sta enemy2_t + sta enemy3_t + sta enemy4_t + sta enemy5_t + sta enemy6_t + sta enemy7_t + sta enemy9_t + sta enemy10_t + sta enemy11_t + sta enemy12_t + sta enemy13_t + sta enemy14_t + sta enemy15_t + sta holeCols + sta holeCols+1 + sta holeCols+2 + sta holeCols+3 + sta holeCols+4 + sta holeCols+5 + sta holeCols+6 + sta holeCols+7 + lda #$ff + sta tip_y + jmp aa75 + +main_loop: + lda #$00 + sta COLUBK ; Background color + + ; VERTICAL_SYNC + lda #2 + sta VSYNC ; Start vertical synchro + sta WSYNC ; Wait for 3 lines + sta WSYNC + sta WSYNC + ; + lda #43 + sta TIM64T + lda #0 + sta VSYNC ; Stop vertical synchro + +aa75: + ; Nanochess' mini sound effects player + ldx tracker + bne ef4 + lda effect0 + beq ef0 + tax + lda sound_effect,x + bne ef1 + sta effect0 + beq ef0 + +ef1: sta AUDF0 + lda sound_effect+1,x + sta AUDC0 + lsr + lsr + lsr + lsr + inx + inx + stx effect0 + +ef0: sta AUDV0 + + lda effect1 + beq ef2 + tax + lda sound_effect,x + bne ef3 + sta effect1 + beq ef2 + +ef3: sta AUDF1 + lda sound_effect+1,x + sta AUDC1 + lsr + lsr + lsr + lsr + inx + inx + stx effect1 + +ef2: sta AUDV1 + bpl tr0 + + ; Nanochess' mini tracker +ef4: + ldx tracker + beq tr1 + dec tracker_c + bne tr3 + lda music-1,x + bne tr2 + sta tracker + beq tr1 + +tr2: and #$1f + asl + tay + lda music_notes-2,y + sta AUDC0 + lda music_notes-1,y + sta AUDF0 + lda music-1,x + lsr + lsr + and #$38 + sta tracker_c + lda music,x + asl + tay + lda music_notes-2,y + sta AUDC1 + lda music_notes-1,y + sta AUDF1 + inx + inx + stx tracker + lda #$3f + sta tracker_v +tr3: dec tracker_v + lda tracker_v + lsr + lsr + cpx #43 + bcs tr1 + lda tracker_v + and #$03 + bne tr4 + lda #$02 +tr4: ora #$0c +tr1: sta AUDV0 + sta AUDV1 +tr0: + + lda aa_x_pos + cmp #$0f ; Corrects left side X-pos, for some reason it breaks. + bcs *+4 + sbc #2 + set_x_position 0 ; Player 0 + ; ldx #1 ; Player 1 + lda sun_pos + set_x_position 1 ; Player 1 + lda #84 + set_x_position 2 ; Missile 0 + lda #$20 + sta NUSIZ0 + sta NUSIZ1 + + jsr build_hole_map + + lda #$00 + sta GRP0 + sta GRP1 + sta COLUPF + lda #$20 + sta CTRLPF + + jmp ba0 + +ba1: + + ; + ; Score zone + ; + sta WSYNC ; 0 + ldx #$00 ; 3 + stx COLUBK ; 5 Background color + stx GRP0 ; 8 + stx GRP1 ; 11 + stx REFP0 ; 14 + stx REFP1 ; 17 + sta en5 ; 20 + lda score ; 23 + and #$0f ; 26 + asl ; 28 + asl ; 30 + asl ; 32 + sta en4 ; 34 + lda score ; 37 + lsr ; 40 + and #$78 ; 42 + sta en3 ; 44 + lda #$21 ; 47 + sta CTRLPF ; 49 + lda #lives_color ; 52 + sta COLUPF ; 54 + ldx lives ; 57 + cpx #7 ; 60 + bcc aa88 ; 62 + ldx #7 ; 64 +aa88: + lda lives_pf,x ; 66 + sta WSYNC ; 71 + sta PF0 + lda lives_pf+8,x + sta PF1 + lda lives_pf+16,x + sta PF2 + lda score+1 ; 35 + and #$0f ; 38 + asl ; 40 + asl ; 42 + asl ; 44 + sta en2 ; 46 + lda score+1 ; 49 + lsr ; 52 + and #$78 ; 54 + sta en1 ; 56 + lda score+2 ; 59 + and #$0f ; 62 + asl ; 64 + asl ; 66 + asl ; 68 + sta en0 ; 70 + ldx #0 + + lda #score_color ; 73 + jmp $f400 ; 75 + org $F400 +mp0: + sta WSYNC + stx GRP0 + stx GRP1 + ldy #numbers>>8 ; 8 + sty en0+1 ; 11 + sty en1+1 ; 14 + sty en2+1 ; 17 + sty en3+1 ; 20 + sty en4+1 ; 23 + sty en5+1 ; 26 + + sta COLUP0 ; 29 + sta COLUP1 ; 32 + lda #$03 ; 35 3 copies together + ldx #$f0 ; 37 + stx RESP0 ; 39 + stx RESP1 ; 42 + stx HMP0 ; 45 + sta NUSIZ0 ; 48 + sta NUSIZ1 ; 51 + lsr ; 53 + sta VDELP0 ; 56 + sta VDELP1 ; 59 + lsr + sta HMP1 + sta WSYNC ; 62 + sta HMOVE ; 3 + lda #4 + sta temp2 +mp1: ldy temp2 ; 2 + lda (en0),y ; 7 + sta GRP0 ; 10 + sta WSYNC ; 13 + 61 = 76 + lda (en1),y ; 5 + sta GRP1 ; 8 + lda (en2),y ; 13 + sta GRP0 ; 16 + lda (en3),y ; 21 + sta temp1 ; 24 Write (this depends on being at "root" stack pos) + lda (en4),y ; 29 (and of course not being called) + tax ; 31 + lda (en5),y ; 36 + tay ; 38 + lda temp1 ; 41 Read + sta GRP1 ; 44 + stx GRP0 ; 47 + sty GRP1 ; 50 + sta GRP0 ; 53 + dec temp2 ; 58 + bpl mp1 ; 60/61 +mp3: + ; Looks for code spanning page + if (mp1&$ff00)!=(mp3&$ff00) + lda megabug3 ; :P + endif + echo "mp0 ",mp0," mp1 ",mp1," mp3 ",mp3 + + ; + ; End of graphics (204 lines) + ; + ldx #$00 + lda #2 + sta WSYNC + sta VBLANK + stx VDELP0 + stx VDELP1 + stx GRP0 + stx GRP1 + stx PF0 + stx PF1 + stx PF2 + + ; + ; Start overscan timer + ; + lda #43 ; 37 lines * 76 = 2812 cycles / 64 = 43.9375 + sta TIM64T + + lda flags + and #$03 + cmp #$02 ; Tongue touched? + bne aa67 + jmp wait_overscan + +aa67: lda eggs + bne aa70 + ldx aa_x_pos + cpx #52 + bne aa71 + inc aa_x_pos + lda #43 ; Mountain King (Grieg) + sta tracker + lda #1 + sta tracker_c + lda #0 + sta filling + sta flags + ldx #tongue_size*2-1 + lda #0 +aa72: sta tongue1+W,x + dex + bpl aa72 + + sta enemy0_t + sta enemy1_t + sta enemy2_t + sta enemy3_t + sta enemy4_t + sta enemy5_t + sta enemy6_t + sta enemy7_t + sta enemy8_t + sta enemy9_t + sta enemy10_t + sta enemy11_t + sta enemy12_t + sta enemy13_t + sta enemy14_t + sta enemy15_t + sta holeCols + sta holeCols+1 + sta holeCols+2 + sta holeCols+3 + sta holeCols+4 + sta holeCols+5 + sta holeCols+6 + sta holeCols+7 + lda #$ff + sta tip_y +aa71: jmp aa34 + +aa70: lda flags + and #$fc + sta flags + + ; + ; Check for collisions of enemies versus tongue (playfield pixels) + ; + ldx #15 +aa53: lda enemy0_t,x + tay + cmp #non_interactive_sprites + bcc aa86 + cpx #8 + bcs aa45 + lda cxLst,x + and #$20 + beq aa86 ; No, jump + bne aa127 + +aa45: lda cxLst-8,x + asl + bpl aa86 + +aa127: tya + and #$f0 + cmp #sprite_spider + beq aa106 + cmp #sprite_worm ; Is it a worm? + beq aa55 + bne aa87 + +aa86: + dex + bpl aa53 + jmp aa78 + + ; + ; Spider + ; * Kills if touches tongue tip + ; +aa106: + txa + and #$07 + cmp tip_y ; Is it at same level than tongue? + bne aa86 ; No, jumps + lda enemy0_x,x + tay + sbc #3 + lsr + lsr + cmp tip_x + beq aa56sc + tya + clc + adc #10 + lsr + lsr + cmp tip_x + beq aa56sc + bne aa86 + +aa87: + ; + ; Ant: + ; * Eaten if tongue tip. + ; * Kills if it touch any other part of tongue. + ; + txa + and #$07 + cmp tip_y ; Is it at same level than tongue? + bne aa56sc ; No, kills + lda enemy0_x,x + sbc #3 + tay + lsr + lsr + cmp tip_x + beq aa57 + bcs aa56 + tya + clc + adc #10 + lsr + lsr + cmp tip_x + beq aa57 + bcc aa56 + +aa57: lda enemy0_t,x + cmp #sprite_queen_ant+$20 + bcs aa125 + cmp #sprite_queen_ant + bcs aa59 +aa125: cmp #pricey_sprites ; Red ant and caterpillar + bcs aa97 + sed + lda ants_eaten + adc #1 + sta ants_eaten + cld + lda #sprite_explosion; Goodbye ant + .byte $2c ; BIT opcode to jump +aa97: lda #sprite_150 + ldy #11 + bne aa79 + +aa56sc: jmp aa56 + +aa59: jsr clear_enemies + ldy #33 +aa79: sty effect1 + bne aa60 + + ; + ; Worm: + ; * Eaten if tongue tip from behind. + ; * Kills only if tongue tip in front. + ; +aa55: txa + and #$07 + cmp tip_y + bne aa54 + lda enemy0_x,x + tay + sbc #3 + lsr + lsr + cmp tip_x + beq aa58 + bcs aa54 + tya + clc + adc #10 + lsr + lsr + cmp tip_x + beq aa58 + bcc aa54 +aa58: lda tip_dir + beq aa56 + lsr ; $ff left $00 right + eor enemy0_t,x + and #ENEMY_SPEED_MASK + bne aa56 + lda flags + and #~FLAGS_WORM + sta flags + inc worms_eaten + lda #20 + sta effect1 + lda #sprite_200 ; 200 points +aa60: sta enemy0_t,x + bne aa54 + + ; Kill +aa56: lda flags + and #$fc + ora #$01 + sta flags + +aa54: + dex + bmi aa78 + jmp aa53 +aa78: + + lda flags + and #$03 + beq aa52 + jmp wait_overscan + + ; + ; Invoke an enemy + ; +aa52: + dec timer + beq aa95 + jmp aa14 +aa95: + jsr random_proc ; Get a random number (just because :P) + tay ; Save it + and #$0e ; Restart timer + ora #$01 + sta timer + lda antHill ; Starts at 1 + clc + adc #$03 ; Level 1 - fills 4 tunnels, 2 - 5 t., 4 and so- 6 t. + cmp #$06 ; No more than 6 tunnels + bcc aa92 + lda #$06 +aa92: asl + sta temp1 + lda filling + cmp temp1 + bcc aa102 +aa103: jmp aa8 +aa102: + and #$0e + lsr + eor #$07 + tax + cmp #$07 + bne aa111 + lda enemy8_t,x + bne aa111 + lda #FLAGS_SPIDER + bit flags + bne aa111 + lda sun_pos + cmp #8 ; Now it's night? + beq aa110 ; No, jump +aa111: lda enemy0_t,x ; There is space for a common enemy? + beq aa12 ; Yep, jump. +aa110: lda enemy8_t,x ; There is space for a worm/spider? + bne aa103 ; No, jump + cpx #0 ; Top tunnel? + bne aa101 ; No, jump + lda sun_pos + cmp #8 ; Now it's night? + bne aa101 ; No, jump + lda #FLAGS_SPIDER + bit flags ; We have already the spider? + bne aa101 ; Yes, jump + ora flags + sta flags + lda #ENEMY_MAX_X + sta enemy8_x,x + tya + and #ENEMY_SPEED_MASK + ora #sprite_spider + sta enemy8_t,x + bne aa8 + +aa101: + txa + and #$07 + cmp tip_y + bne aa103 + lda #FLAGS_WORM + bit flags ; Already a worm in screen? + bne aa8 ; Yes, jump + ora flags + sta flags + tya + and #$40 + beq aa37 + lda enemy0_x,x + cmp #40 + bcc aa90 +aa91: lda #ENEMY_MIN_X + sta enemy8_x,x + tya + and #ENEMY_SPEED_MASK + ora #sprite_worm+ENEMY_DIR_MASK + sta enemy8_t,x + bne aa8 + +aa37: lda enemy0_x,x + cmp #129 + bcs aa91 +aa90: lda #ENEMY_MAX_X + sta enemy8_x,x + tya + and #ENEMY_SPEED_MASK + ora #sprite_worm + sta enemy8_t,x + bne aa8 + +aa12: tya + and #$40 + beq aa15 + lda #ENEMY_MIN_X + sta enemy0_x,x + tya + and #ENEMY_SPEED_MASK + ora enemies_going_right,x + sta enemy0_t,x + bne aa8 + +aa15: lda #ENEMY_MAX_X + sta enemy0_x,x + tya + and #ENEMY_SPEED_MASK + ora enemies_going_left,x + sta enemy0_t,x + ; bne aa8 + +aa8: ldx antHill + cpx #32 + bcc aa93 + ldx #31 +aa93: lda filling + clc + adc #2 + cmp refilling,x + bne aa94 + lda #0 +aa94: sta filling +aa14: + + ; + ; Sun animation + ; + lda frame + and #$1f ; Each 32 frames + bne aa81 + lda sun_pos + cmp #8 + beq aa81 + dec sun_pos ; Move sun left by one pixel + cmp #9 + bne aa81 + lda #129 ; Click effect + sta effect0 +aa81: + + ; + ; Enemy animation and movement + ; + ldy #0 + lda frame + and #$07 ; Enemies change animation frame each 8 frames + bne aa11 + ldy #8 +aa11: and #$03 ; Enemies move each 4 frame + beq aa117 + jmp aa43 +aa117: + ldx #$0f +aa10: + lda enemy0_t,x ; Active enemy? + bne aa118 ; Yes, jump +aa120: dex + bpl aa10 + jmp aa43 + + ; + ; Check first for brief sprites (explosion, 150 and 200 points) + ; +aa118: cmp #non_interactive_sprites + bcs aa39 +aa49: inc enemy0_t,x + cmp #sprite_150+$03 + beq aa96 + cmp #sprite_200+$03 + beq aa46 + cmp #sprite_200_spider+$03 + beq aa46 + cmp #sprite_explosion+$03 + bne aa38sd + lda #$10 ; 100 points + .byte $2c ; BIT opcode to jump +aa46: lda #$20 ; 200 points + .byte $2c ; BIT opcode to jump +aa96: lda #$15 ; 150 points + jsr score_points + lda #$00 + sta enemy0_t,x +aa38sd: jmp aa38 + ; + ; All other sprites + ; +aa39: and #$f0 + cmp #sprite_spider + bne aa108 + ; + ; Spider handling + ; + lda tip_y ; Tongue tip active? + bmi aa120 ; No, jump (spider stays quiet) + txa ; Get vertical position of spider + and #$07 + cmp tip_y ; Comparison with tongue tip vertical position. + beq aa109 ; Same vertical position? yes, jump + bcs aa120 ; Jump if spider deeper than tongue tip. It shouldn't happen + stx temp1 + tax + lda holeCols,x ; Check if tongue goes thru a hole !!! + lsr + bcs aa112 + lsr + bcs aa113 + lsr + bcs aa114 + lda #0 + .byte $2c ; BIT opcode to jump +aa114: lda #8 + .byte $2c ; BIT opcode to jump +aa113: lda #16 + .byte $2c ; BIT opcode to jump +aa112: lda #24 + clc + adc kernelLst,x + tax + lda hole_pos,x ; Now get the X-coordinate for hole + ldx temp1 + sec ; There's an X-coordinate, center spider over it + sbc #2 + jmp aa116 + + ; + ; Spider at same level than tongue tip + ; +aa109: lda tip_x + asl + asl + beq aa116 + sbc #1 +aa116: sbc enemy0_x,x ; Take a decision of direction to move + beq aa119 ; At target position? yes, jump + bcc aa44 + bcs aa40 + + ; + ; Try to lower spider by one level + ; +aa119: cpx #1 ; Is spider at bottom-most position? + beq aa41 ; Yes, jump, stay quiet + cpx #9 + beq aa41 + lda enemy0_t-1,x ; Is it busy the next enemy slot? + bne aa41 ; Yes, jump, stay quiet + lda enemy0_x,x ; Copy X position + sta enemy0_x-1,x + lda enemy0_t,x ; Copy type + sta enemy0_t-1,x + lda #0 ; Erase spider from old slot + sta enemy0_t,x + beq aa41 + + ; + ; Ant, red ant, worm or centipede + ; +aa108: + cmp #sprite_queen_ant + beq aa38 + cmp #sprite_queen_ant+$10 + beq aa38 + lda enemy0_t,x + and #ENEMY_SPEED_MASK ; Fast? + beq aa44 + lda frame + and #$04 +aa38sc: bne aa38 +aa44: + lda enemy0_t,x + and #ENEMY_DIR_MASK ; Goes to left? + bne aa40 ; No, jump + dec enemy0_x,x + lda enemy0_x,x + cmp #ENEMY_MIN_X ; Reached left limit? + bne aa41 ; No, jump +aa42: + lda enemy0_t,x + and #$f0 + cmp #sprite_worm + bne aa98 + lda flags + and #~FLAGS_WORM + sta flags +aa98: cmp #sprite_spider ; It could happen *sigh* + bne aa107 + lda flags + and #~FLAGS_SPIDER + sta flags +aa107: lda #0 + sta enemy0_t,x + beq aa38 + +aa40: + inc enemy0_x,x + lda enemy0_x,x + cmp #ENEMY_MAX_X ; Reached right limit? + beq aa42 ; Yes, jump +aa41: + tya + eor enemy0_t,x ; Changed animation frame if required + sta enemy0_t,x +aa38: dex + bmi aa43 + jmp aa10 +aa43: + + ; + ; Queen ant flashing + ; + lda frame + and #$01 + bne aa34 + lda enemy0_t + beq aa32 + cmp #non_interactive_sprites + bcs aa51 + adc #1 + cmp #sprite_1000+8 + bne aa32 + jsr score_points_2 ; 1000 points + lda #0 + beq aa32 + +aa51: adc #$07 + cmp #sprite_queen_ant+$20 + bcc aa32 + sbc #$20 +aa32: sta enemy0_t + + lda enemy8_t + beq aa33 + cmp #non_interactive_sprites + bcs aa50 + adc #1 + cmp #sprite_1000+8 + bne aa33 + jsr score_points_2 ; 1000 points + lda #0 + beq aa33 + +aa50: adc #$07 + cmp #sprite_queen_ant+$20 + bcc aa33 + sbc #$20 +aa33: sta enemy8_t +aa34: + ; + ; Count frame, step on random generator + ; + inc frame + jsr random_proc + ; + ; Aardvark enters game + ; + ldx aa_x_pos + cpx #52 + beq aa7 + lda frame + and #$07 + bne aa31 + inc aa_x_pos + cpx #51 + bne aa31 + ; Start tongue + lda #$02 + sta holeCols+7 + ldx #19 + stx tip_x + lda #7 + sta tip_y + lda #0 + sta tip_dir + jsr point_egg + ldx tip_x + lda tip_y + jsr draw_block +aa31: + lda frame + and #$07 + bne aa4 + lda aa_offset + eor #$28 + sta aa_offset +aa4: + jmp aa20 + +aa7: + lda #0 + + jsr fire_button ; Fire button pressed? + bpl aa22 ; No, jump + + ldx tip_x ; Get tongue coordinates + lda tip_y + cpx #19 + bne aa19 + cmp #7 + beq aa123 ; Is it at base? yes, jump without doing anything +aa19: + jsr clear_block + lda effect0 + cmp #128 + bcs aa122 + cmp #66 + bcs aa121 +aa122: + lda #66 + sta effect0 +aa121: ldx tip_x + beq aa23 + dex + lda tip_y + jsr check_block + bne aa24 + inx + +aa23: cpx #39 + beq aa25 + inx + lda tip_y + jsr check_block + bne aa24 + +aa25: ldx tip_y + lda #$00 + sta holeCols,x + inc tip_y + jmp aa20 + +aa24: stx tip_x + jmp aa20 + +aa123: jmp aa28 + +aa22: + jsr build_hole_map + lda SWCHA + ; Note #$10 isn't used (going up) + and #$20 ; Going down? + beq aa17 ; Yes, jump +aa18: lda SWCHA + bmi aa16 ; Going right? No, jump + lda tip_y + bmi aa28 + beq aa28 ; Last tunnel? Yes, cannot move + lda frame + lsr + bcc aa28 + ldx tip_x + cpx #39 + beq aa28 + inx +aa26: lda tip_y + jsr check_block + bne aa30 + txa + sec + sbc tip_x + sta tip_dir + stx tip_x + lda tip_y + jsr point_egg + ldx tip_x + lda tip_y + jsr draw_block + jmp aa20 + +aa30: txa + pha + ldx tip_x + lda tip_y + jsr clear_block + pla + sta tip_x +aa28: jmp aa20 + +aa16: rol ; Going left? + bmi aa20 + lda tip_y + bmi aa20 + beq aa20 ; Last tunnel? Yes, cannot move + lda frame + lsr + bcc aa20 + ldx tip_x + beq aa20 + dex + bpl aa26 + + ; + ; Going down + ; +aa17: ldx tip_y ; Get row of tongue tip + bmi aa18 ; Invalid? Yes, jump to check for right/left + beq aa18 ; Vertical limit? Yes, jump to check for right/left + lda kernelLst-1,x + tax + lda tip_x ; Tongue tip at 0? + beq aa18 ; Jump to check for right/left + cmp hole_pos,x + beq aa126 + cmp hole_pos+8,x + beq aa27 + cmp hole_pos+16,x + beq aa115 + cmp hole_pos+24,x + bne aa18 ; No hole, so jump to check for right/left + ldy #$01 + .byte $2c ; BIT opcode to jump +aa115: ldy #$02 + .byte $2c ; BIT opcode to jump +aa126: ldy #$08 + .byte $2c ; BIT opcode to jump +aa27: ldy #$04 + tya + ldx tip_y + dex + ora holeCols,x + sta holeCols,x + stx tip_y + txa + ldx tip_x + jsr point_egg + ldx tip_x + lda tip_y + jsr draw_block + lda #0 + sta tip_dir + +aa20: + +wait_overscan: + lda INTIM + bne wait_overscan + sta WSYNC + sta WSYNC + + lda aa_x_pos + cpx #135 + bne aa74 + jsr bonus_screen + jmp next_level +aa74: + + lda flags + and #$03 + cmp #$02 ; Has finished tongue color changing animation? + beq aa68 ; Yes, jump + jmp main_loop ; Continue with main loop + +aa68: dec lives + jsr bonus_screen + lda lives + bmi aa89 + jmp restart_level ; Restart level + +aa89: jmp title_screen + + ; + ; Bonus screen + ; +bonus_screen: + ldx worms_eaten + beq aa99 +aa100: + lda ants_eaten + jsr score_points + dex + bne aa100 +aa99: + rts + + ; + ; Run random number generator + ; +random_proc: + ; + ; Random number generator + ; + lda rand + sec + ror + eor frame + ror + eor rand + ror + eor #9 + sta rand + rts + + ; + ; Check for fire button + ; +fire_button_single: + lda INPT4 + eor #$ff + tax + eor prev_button + stx prev_button + bpl fire_button1 + txa +fire_button1: + rts + +fire_button: + lda INPT4 + eor #$ff + sta prev_button + rts + + ; + ; Calculate memory zone for tongue block + ; a = zone (0-7) + ; +calc_zone: + asl ; x2 + asl ; x4 + sta en0 + asl ; x8 + adc en0 ; x12 + adc #tongue1 + sta en0 + adc #W + sta en0+1 + sta en1+1 + rts + + ; + ; Check for tongue block + ; + ; a = zone (0-5) + ; x = x pixel (0-39) + ; +check_block: + jsr calc_zone + lda pixel_to_byte,x + tay + lda (en1),y + and pixel_to_bit,x + rts + + ; + ; Clear enemies (used when eating queen ant) + ; +clear_enemies: + txa + pha + ldx #9 +aa61: lda enemy0_t,x + cmp #non_interactive_sprites + bcc aa62 + and #$f0 + cmp #sprite_worm + beq aa63 + cmp #sprite_spider + beq aa104 + cmp #pricey_sprites + bcs aa64 + lda #sprite_explosion + .byte $2c ; BIT opcode to jump +aa63: lda #sprite_200 + .byte $2c ; BIT opcode to jump +aa64: lda #sprite_150 + .byte $2c ; BIT opcode to jump +aa104: lda #sprite_200_spider + sta enemy0_t,x + cmp #sprite_200_spider + bne aa105 + lda flags + and #~FLAGS_SPIDER + sta flags +aa105: + cmp #sprite_200 ; Only a worm gives a 200 points bonus + bne aa62 + lda flags + and #~FLAGS_WORM + sta flags +aa62: dex + bpl aa61 + pla + tax + lda #sprite_1000 + rts + + ; + ; Give points per egg eaten + ; + ; a = zone (0-7) + ; x = x pixel (0-39) + ; +point_egg: + cmp #0 + beq aa35 + jsr calc_zone + lda en1 + clc + adc #tongue_to_eggs + sta en1 + lda pixel_to_byte,x + tay + lda (en1),y + and pixel_to_bit,x + beq aa35 + lda eggs + ror + lda #1 + bcc aa77 + lda #6 +aa77: sta effect0 + dec eggs + lda #1 + + ; Score 1 point for egg eaten +score_points: + clc + sed + adc score + sta score +aa48: lda score+1 + adc #0 + sta score+1 + lda score+2 + adc #0 + sta score+2 + cld +aa35: + rts + +score_points_2: + sec + sed + bcs aa48 + + ; + ; Draw a tongue block + ; + ; a = zone (0-7) + ; x = x pixel (0-39) + ; +draw_block: + jsr calc_zone + lda pixel_to_byte,x + tay + lda (en1),y + ora pixel_to_bit,x + sta (en0),y + lda en0 + clc + adc #tongue_to_eggs + sta en0 + lda en1 + adc #tongue_to_eggs + sta en1 + lda (en1),y + ora pixel_to_bit,x + sta (en0),y + rts + + ; + ; Clear a tongue block + ; + ; a = zone (0-7) + ; x = x pixel (0-39) + ; +clear_block: + jsr calc_zone + lda pixel_to_byte,x + tay + lda (en1),y + and pixel_to_bit2,x + sta (en0),y + lda en0 + clc + adc #tongue_to_eggs + sta en0 + lda en1 + adc #tongue_to_eggs + sta en1 + lda (en1),y + and pixel_to_bit2,x + sta (en0),y + rts + + ; + ; Build random hole map for the current level seed + ; See also random.c + ; +build_hole_map: SUBROUTINE +.lastPat = tmpVars + lda #255 + sta .lastPat + ldy #NUM_FLOORS-1 + ldx level_seed +.0: + lda random_level,x + tax + and #$07 + cmp .lastPat + bne .1 + txa + lsr + lsr + tax + and #$07 +.1: + sta kernelLst,y + sta .lastPat + dey + bne .0 + sty kernelLst ; Fixed tunnel for queen ants + rts + + ; + ; With the help of: + ; + ; http://alienbill.com/2600/basic/music/tune2600.html + ; http://piano-player.info/ + ; + + ; + ; Songs refer to these notes. + ; These notes contain frequency and "instrument" and are + ; choosen per usage in song instead of full "continuous" octaves + ; +music_notes: + .byte 12,12 ; 1 + .byte 4,28 + .byte 4,25 ; 3 + .byte 4,22 + .byte 4,18 ; 5 + .byte 4,16 + + .byte 12,20 ; 7 + .byte 12,19 + .byte 12,18 ; 9 + .byte 12,17 + .byte 12,15 ; 11 + .byte 12,14 + .byte 12,13 ; 13 + .byte 12,11 + .byte 4,31 ; 15 + + .byte 6,7 ; 16 + .byte 6,6 ; 17 + .byte 12,27 ; 18 + .byte 12,23 ; 19 + + .byte 0,0 ; 20 Unused + + .byte 6,7 ; 21 + .byte 12,30 + .byte 12,27 ; 23 + .byte 12,24 + .byte 12,20 ; 25 + .byte 12,18 + + .byte 0,0 ; 27 Unused + .byte 1,12 ; 29 + .byte 1,6 ; 31 + .byte 1,13 ; 33 + .byte 1,9 ; 35 + .byte 0,0 + + ; + ; Global label to access music + ; +music: + + ; + ; Ranz des vaches + ; +music_ranz_des_vaches: + .byte 6*32+2,22 ; 1 -> tracker + .byte 1*32+3,23 + .byte 1*32+1,21 + .byte 1*32+2,22 + .byte 1*32+4,24 + .byte 1*32+1,21 + + .byte 6*32+2,22 + .byte 1*32+3,23 + .byte 1*32+1,21 + .byte 1*32+2,22 + .byte 1*32+4,24 + .byte 1*32+1,21 + + .byte 6*32+2,22 + .byte 1*32+4,24 + .byte 1*32+6,26 + .byte 1*32+5,25 + .byte 1*32+1,21 + .byte 1*32+4,24 + + .byte 5*32+3,23 + .byte 1*32+5,25 + + .byte 0,0 + + ; + ; Mountain king + ; +music_mountain_king: + .byte 2*32+7,16 ; 43 -> tracker + .byte 2*32+9,16 + .byte 2*32+10,18 + .byte 2*32+11,18 + .byte 2*32+13,16 + .byte 2*32+10,16 + .byte 4*32+13,18 + + .byte 2*32+12,16 + .byte 2*32+9,16 + .byte 4*32+12,18 + .byte 2*32+11,16 + .byte 2*32+8,16 + .byte 4*32+11,18 + + .byte 2*32+7,16 + .byte 2*32+9,16 + .byte 2*32+10,18 + .byte 2*32+11,18 + .byte 2*32+13,16 + .byte 2*32+10,16 + .byte 2*32+13,18 + .byte 2*32+15,18 + + .byte 2*32+14,17 + .byte 2*32+13,17 + .byte 2*32+10,19 + .byte 2*32+13,19 + .byte 7*32+14,17 + + .byte 0,0 + + ; + ; Death music + ; +music_touch: + .byte 4*32+28,28 ; 97 -> tracker + .byte 4*32+29,29 + .byte 4*32+30,30 + .byte 7*32+31,31 + .byte 0,0 + + ; + ; Global label to access sound effects + ; +sound_effect: + .byte 0 + + .byte $04,$81 ; 1 Eating egg (1) + .byte $03,$71 ; 3 + .byte 0 ; 5 + + .byte $08,$81 ; 6 Eating egg (2) + .byte $07,$71 ; 8 + .byte 0 ; 10 + + .byte $07,$88 ; 11 Eating bug + .byte $06,$88 ; 13 + .byte $07,$88 ; 15 + .byte $06,$88 ; 17 + .byte 0 ; 19 + + .byte $1c,$fc ; 20 Eating worm + .byte $1c,$cc ; 22 + .byte $1c,$ac ; 24 + .byte $1c,$8c ; 26 + .byte $1c,$6c ; 28 + .byte $1c,$4c ; 30 + .byte 0 ; 32 + + .byte $1c,$fc ; 33 Eating queen + .byte $1c,$cc ; 35 + .byte $1c,$ac ; 37 + .byte $1c,$8c ; 39 + .byte $1c,$6c ; 41 + .byte $1c,$4c ; 43 + .byte $10,$ec ; 45 + .byte $10,$cc ; 47 + .byte $10,$ac ; 49 + .byte $10,$6c ; 51 + .byte $10,$4c ; 53 + .byte $10,$3c ; 55 + .byte $10,$4c ; 57 + .byte $10,$3c ; 59 + .byte $10,$4c ; 61 + .byte $10,$3c ; 63 + .byte 0 ; 65 + + .byte $1f,$c4 ; 66 Retrain tongue + .byte $1e,$b4 ; 68 + .byte $1d,$c4 ; 70 + .byte $1c,$b4 ; 72 + .byte $1b,$c4 ; 74 + .byte $1a,$b4 ; 76 + .byte $19,$c4 ; 78 + .byte $18,$b4 ; 80 + .byte $17,$c4 ; 82 + .byte $16,$b4 ; 84 + .byte $15,$c4 ; 86 + .byte $14,$b4 ; 88 + .byte $13,$c4 ; 90 + .byte $12,$b4 ; 92 + .byte $11,$c4 ; 94 + .byte $10,$b4 ; 96 + .byte $0f,$c4 ; 98 + .byte $0e,$b4 ; 100 + .byte $0d,$c4 ; 102 + .byte $0c,$b4 ; 104 + .byte $0b,$c4 ; 106 + .byte $0a,$b4 ; 108 + .byte $09,$c4 ; 110 + .byte $08,$b4 ; 112 + .byte $07,$c4 ; 114 + .byte $06,$b4 ; 116 + .byte $05,$c4 ; 118 + .byte $04,$b4 ; 120 + .byte $03,$c4 ; 122 + .byte $02,$b4 ; 124 + .byte $01,$c4 ; 126 + .byte 0 + + .byte $18,$c1 ; 129 Click effect for sunset + .byte $0c,$61 ; 131 + .byte $06,$a1 ; 133 + .byte $03,$41 ; 135 + .byte $02,$81 ; 137 + .byte $01,$21 ; 139 + .byte 0 + + echo "Before random_level at $fd00: ",* + + org $fd00 + + .include "aardlev.asm" + + org $fe00 +fine_adjustment: + .byte $70 ; -7 + .byte $60 ; -6 + .byte $50 ; -5 + .byte $40 ; -4 + .byte $30 ; -3 + .byte $20 ; -2 + .byte $10 ; -1 + .byte $00 ; 0 + .byte $f0 ; +1 + .byte $e0 ; +2 + .byte $d0 ; +3 + .byte $c0 ; +4 + .byte $b0 ; +5 + .byte $a0 ; +6 + .byte $90 ; +7 + +pixel_to_byte: + .byte 0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2 + .byte 3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5 + +pixel_to_bit: + .byte $10,$20,$40,$80 + .byte $80,$40,$20,$10,$08,$04,$02,$01 + .byte $01,$02,$04,$08,$10,$20,$40,$80 + + .byte $10,$20,$40,$80 + .byte $80,$40,$20,$10,$08,$04,$02,$01 + .byte $01,$02,$04,$08,$10,$20,$40,$80 + +pixel_to_bit2: + .byte $ef,$df,$bf,$7f + .byte $7f,$bf,$df,$ef,$f7,$fb,$fd,$fe + .byte $fe,$fd,$fb,$f7,$ef,$df,$bf,$7f + + .byte $ef,$df,$bf,$7f + .byte $7f,$bf,$df,$ef,$f7,$fb,$fd,$fe + .byte $fe,$fd,$fb,$f7,$ef,$df,$bf,$7f + + ; + ; Position for holes (in "fat" pixels) + ; Note vertical sorting, one line of holes is made from one column of data. + ; A B C D E F G H + ; +hole_pos: + .byte 0, 6, 3, 0, 0, 0, 0, 0 + .byte 12,12, 9, 6, 9, 3, 0,15 + .byte 26,18,20,26,23,15,18,23 + .byte 0,32,35,32, 0,29,29,35 + + ; + ; Lives representation as playfield graphics + ; +lives_pf: + .byte $00,$40,$40,$40,$40,$40,$40,$40 + .byte $00,$00,$80,$a0,$a8,$aa,$aa,$aa + .byte $00,$00,$00,$00,$00,$00,$01,$05 + + ; + ; Refilling constant per level + ; +refilling: + .byte 128,126,124,122,120,118,116,114 + .byte 112,110,108,106,104,102,100,98 + .byte 96,94,92,90,88,86,84,82 + .byte 80,78,76,74,72,70,68,66 + + ; + ; Enemies per tunnel + ; +enemies_going_right: + .byte 0 + .byte 0 + .byte sprite_caterpillar+ENEMY_DIR_MASK + .byte sprite_red_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte 0 + .byte 0 + .byte sprite_caterpillar+ENEMY_DIR_MASK + .byte sprite_red_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + +enemies_going_left: + .byte 0 + .byte 0 + .byte sprite_caterpillar + .byte sprite_red_ant + .byte sprite_ant + .byte sprite_ant + .byte sprite_ant + .byte sprite_ant + .byte 0 + .byte 0 + .byte sprite_caterpillar + .byte sprite_red_ant + .byte sprite_ant + .byte sprite_ant + .byte sprite_ant + .byte sprite_ant + + org $ff00 +numbers: + .byte $fe,$c6,$c6,$c6,$fe,$00,$00,$00 + .byte $78,$30,$30,$70,$30,$00,$00,$00 + .byte $fe,$c0,$fe,$06,$fe,$00,$00,$00 + .byte $fe,$06,$fe,$06,$fe,$00,$00,$00 + .byte $06,$06,$fe,$c6,$c6,$00,$00,$00 + .byte $fe,$06,$fe,$c0,$fe,$00,$00,$00 + .byte $fe,$c6,$fe,$c0,$fe,$00,$00,$00 + .byte $18,$18,$0c,$06,$fe,$00,$00,$00 + .byte $fe,$c6,$fe,$c6,$fe,$00,$00,$00 + .byte $fe,$06,$fe,$c6,$fe,$00,$00,$00 + + org $fffc + .word START ; RESET + .word START ; BRK + diff --git a/aard1.new.asm b/aard1.new.asm new file mode 100644 index 0000000..54ea7db --- /dev/null +++ b/aard1.new.asm @@ -0,0 +1,2040 @@ + ; + ; Aardvark + ; + ; by Oscar Toledo G. (nanochess) + ; + ; Creation date: Sep/02/2016. + ; Revision date: Dec/02/2016. Added holes and playfield mouth/eggs. + ; Revision date: Dec/03/2016. Added enemy bitmaps and color. + ; Revision date: Dec/04/2016. Tongue can be started/reverted with joystick. + ; Added eggs in board. + ; Revision date: Dec/06/2016. Tongue rules more close to arcade. Queen ants + ; are now fixed and flashing. Counts eaten eggs + ; and score. Displays score. + ; Revision date: Dec/07/2016. Enemies are filled randomly, also two speeds. + ; Aardvark centered. Dots are thicker now (uses + ; 2 rows). Aardvark walks slower. + ; Revision date: Dec/11/2016. Now is main bank of 8K ROM. Worm appears at + ; tongue tip level. Player can eat ants and + ; worms. + ; Revision date: Dec/12/2016. Enemy collisions now are checked here to avoid + ; too many cycles used in display. + ; Revision date: Jan/18/2016. Added Ranz des Vaches and Mountain King music. + ; Revision date: Jan/19/2016. Corrected lack of feet in aardvark. Added + ; tongue touched music. Added sound effects. + ; Aardvark exits level when all eggs eaten. + ; Remade code for collision of tongue. Corrected + ; bug where eating right queen would delete left + ; queen. + ; Revision date: May/27/2017. Moved all display code to bank 0, this makes it + ; to work with Atari Flashback Portable. + ; Revision date: Oct/02/2017. Sun moves to left. Counts level. + ; Revision date: Oct/08/2017. Added tongue retrain sound effect. Changes hole + ; position randomly. + ; Revision date: Oct/09/2017. Lives counting. Avoids worm appearing over ant. + ; Going down has priority over going left/right + ; but tries also left/right. New enemies: red + ; ant and caterpillar. Only one worm can appear + ; at any moment. Added more difficulty per level. + ; Calculates bonus. New enemy: spider. + ; Revision date: Oct/10/2017. Solved bug where worm would overwrite spider. + ; Solved bug where tongue removed eggs without + ; adjusting egg count. Solved bug where 150 points + ; sprites wouldn't disappear. Added click sound + ; effect for sunset. Added title screen. + ; Revision date: Nov/01/2017. Changed holes1-6 to bitmap interpretation. + ; Revision date: Nov/02/2017. Moved eggs and tongue to extra RAM (Sara chip). + ; Revision date: Nov/03/2017. Renamed level as antHill. Now tongue and eggs + ; bitmaps are intermixed (new display kernel). + ; Sprites now appear at right places. Now hole + ; map is aligned with kernelLst. Updated egg + ; count. Configurable X-limit. + ; Revision date: Nov/04/2017. Relocated direction bit. Collisions working + ; again. + ; Revision date: Nov/05/2017. Corrected worm catch. Score resets REFP0/1. + ; Collision working again. Supports player + ; reflection in display kernel. + ; + + ; Next available label: aa128 + ; Free label: aa84, aa85 + + ; TODO: + ; * Bug: live counting isn't working right. + ; * Bug: egg counting isn't working right. + ; * Tune collisions. + ; * Check if spider is working. + ; * Bug: slight bam tone after winning music. + ; * Bug: spider is slow to appear or doesn't appear. + ; * Handle holes like a bitset instead of coordinate. + ; * Allow backtracking (using up) + ; * Test in MAME for movement details + ; * Clouds (using PF) + ; * Maybe new aardvark sprite, maybe multicolor, maybe 48px: + ; * Aardvark moving ears. + ; * Aardvark sprite sitting when tongue is touched. + ; * Aardvark walking. + ; * Options in title screen. + ; * Starting level. + ; * Message "Press start" in title screen. + ; * Intermediate screen (losing live and completing level): + ; ants + ; x worms + ; * 10 = bonus + ; * Game over (shown below intermediate screen) + ; * Give an extra live each 20000 points. + + ; Differences versus arcade: + ; * Arcade has 8 tunnels, we have 7. + ; * Red ant appears at tunnel 4, in arcade is 5. + ; * Centipede appears at tunnel 5, in arcade is 6. + ; * Worm can appear at tunnel 7 in arcade (we have no space in screen) + + ; Things in unreleased ROM: + ; * Sun timer using a digit counter. + ; * White line after first bottom section + ; * Level and time in second bottom section (separated) + + ; Game in brief: + ; * Move tongue in joystick direction. + ; * Press button to retrain tongue. + ; * Bugs appear randomly on both sides. + ; * Bug touching tongue -> lost life. + ; * Tongue touching bug from behind -> score. + ; * Spider descends from top to bottom, if touch tip -> lost life. + ; * If tongue eats queen -> all enemies in board disappear. + ; * Eating all dots -> level change. + ; * Each level has different configuration of holes in floors. + ; * Ant: 100 points, appears starting in level 1, tunnels 1-4 + ; * Red ant: 150 points, appears starting in level 2, tunnel 5 + ; * Centipede: 150 points, appears starting in level 3, tunnel 6 + ; * Worm: 200 points, appears always at level of tongue. + ; * Only enemy that can appear at tunnel 7. + ; * Tongue cannot move in tunnel 8, nor there are points, only can eat queen. + ; * On restarting level the holes configuration changes. + ; * On restarting level preserves darkness even if the initial animation is + ; done again. + ; * Sun starts more at left per level. Since level 22 always starts barely + ; some pixels from left. + ; * Extra lives each 20000 points + + processor 6502 + + include aardm.asm + + ; + ; Set object in X + ; A = X position + ; First argument = Object to position (0=P0, 1=P1, 2=M0, 3=M1, 4=BALL) + ; + MAC set_x_position + sta WSYNC ; 0- Start line synchro + sec ; 2- Set carry flag (avoids it in loop) +.AE2: sbc #15 ; 4- Uses required time dividing A by 15 + bcs .AE2 ; 6/7 - 11/16/21/26/31/36/41/46/51/56/61/66 + tay ; 8 + lda fine_adjustment-$f1,y; 13 - Eats 5 cycles crossing page + sta HMP0+{1} + nop + sta RESP0+{1} ; 21/26/31/36/41/46/51/56/61/66/71 - "big" positioning + ENDM + + org $f000 ; ROM start address (4K) + + REPEAT 256 + .byte $4f + REPEND + +START: + sta bank1 ; Ghost + sei ; Disable interruptions + cld ; Disable decimal mode + jmp START2 + +ba0: sta bank0 + jmp 0 ; Ghost + + sta bank1 ; Ghost + jmp ba1 + +ba2: sta bank0 + jmp 0 ; Ghost + + sta bank1 + jmp ba3 + +START2: + ldy rand + ; Clean up the memory + ldx #$ff ; Load X with $FF... + txs ; ...copy to stack pointer + lda #0 ; Load zero in accumulator +AE1: sta 0,X ; Save in address 0 plus X + dex ; Decrement X + bne AE1 ; Repeat until X is zero. + sta SWACNT ; Allow to read joysticks + sta SWBCNT ; Allow to read buttons + tsx ; ldx #$ff + stx prev_button + sty rand + + lda rand + sta level_seed + +title_screen: + lda #20 + sta temp1 + jmp ba2 + +ba3: + lda #0 + sta antHill + lda #4 + sta lives + + lda #0 + sta score + sta score+1 + sta score+2 + + ldx #tongue_size*2-12 +aa124: lda #0 + sta tongue1+W,x + sta tongue1+W+1,x + sta tongue1+W+2,x + sta tongue1+W+3,x + sta tongue1+W+4,x + sta tongue1+W+5,x + txa + sec + sbc #12 + tax + bpl aa124 + + ; + ; Goes to next level + ; +next_level: + inc antHill + inc level_seed + + ; + ; Setup starting sun position + ; + lda antHill + asl + bmi aa82 + asl + bpl aa83 +aa82: lda #$80 +aa83: eor #$ff + adc #$98 + sta sun_pos + + lda #$00 + sta COLUBK ; Background color + + ; VERTICAL_SYNC + lda #2 + sta VSYNC ; Start vertical synchro + sta WSYNC ; Wait for 3 lines + sta WSYNC + sta WSYNC + ; + lda #43 + sta TIM64T + lda #0 + sta VSYNC ; Stop vertical synchro + + ldx #tongue_size*2-12 +aa29: lda #0 + sta tongue1+W,x + sta tongue1+W+1,x + sta tongue1+W+2,x + sta tongue1+W+3,x + sta tongue1+W+4,x + sta tongue1+W+5,x + cpx #0 + beq .+4 + lda #$aa + sta eggs1+W,x + sta eggs1+W+2,x + sta eggs1+W+3,x + sta eggs1+W+5,x + lsr + sta eggs1+W+1,x + sta eggs1+W+4,x + txa + sec + sbc #12 + tax + bpl aa29 + + lda #7*20 + sta eggs + + ; + ; Setup queen ants + ; + lda #sprite_queen_ant+ENEMY_DIR_MASK + sta enemy0_t + sta enemy8_t + lda #$2e + sta enemy0_x + lda #$66 + sta enemy8_x + + jmp aa73 + +restart_level: + inc level_seed + lda #$00 + sta effect0 + sta effect1 + sta ants_eaten + sta worms_eaten + sta COLUBK ; Background color + + ; VERTICAL_SYNC + lda #2 + sta VSYNC ; Start vertical synchro + sta WSYNC ; Wait for 3 lines + sta WSYNC + sta WSYNC + ; + lda #43 + sta TIM64T + lda #0 + sta VSYNC ; Stop vertical synchro + +aa73: + lda #1 ; Ranz des Vaches (Rossini) + sta tracker + lda #1 ; Start immediately + sta tracker_c + + lda #6 + sta aa_x_pos + lda #1 + sta timer + lda #0 + sta filling + sta flags + ; + ; Delete tongue and delete also any eggs under + ; + ldx #tongue_size*2-12 +aa69: + ldy #5 +aa80: lda tongue1+R,x + eor #$ff + and eggs1+R,x + sta eggs1+W,x + lda #0 + sta tongue1+W,x + inx + dey + bpl aa80 + txa + sec + sbc #18 + tax + bpl aa69 + + lda #0 + sta enemy1_t + sta enemy2_t + sta enemy3_t + sta enemy4_t + sta enemy5_t + sta enemy6_t + sta enemy7_t + sta enemy9_t + sta enemy10_t + sta enemy11_t + sta enemy12_t + sta enemy13_t + sta enemy14_t + sta enemy15_t + sta holeCols + sta holeCols+1 + sta holeCols+2 + sta holeCols+3 + sta holeCols+4 + sta holeCols+5 + sta holeCols+6 + sta holeCols+7 + lda #$ff + sta tip_y + jmp aa75 + +main_loop: + lda #$00 + sta COLUBK ; Background color + + ; VERTICAL_SYNC + lda #2 + sta VSYNC ; Start vertical synchro + sta WSYNC ; Wait for 3 lines + sta WSYNC + sta WSYNC + ; + lda #43 + sta TIM64T + lda #0 + sta VSYNC ; Stop vertical synchro + +aa75: + ; Nanochess' mini sound effects player + ldx tracker + bne ef4 + lda effect0 + beq ef0 + tax + lda sound_effect,x + bne ef1 + sta effect0 + beq ef0 + +ef1: sta AUDF0 + lda sound_effect+1,x + sta AUDC0 + lsr + lsr + lsr + lsr + inx + inx + stx effect0 + +ef0: sta AUDV0 + + lda effect1 + beq ef2 + tax + lda sound_effect,x + bne ef3 + sta effect1 + beq ef2 + +ef3: sta AUDF1 + lda sound_effect+1,x + sta AUDC1 + lsr + lsr + lsr + lsr + inx + inx + stx effect1 + +ef2: sta AUDV1 + bpl tr0 + + ; Nanochess' mini tracker +ef4: + ldx tracker + beq tr1 + dec tracker_c + bne tr3 + lda music-1,x + bne tr2 + sta tracker + beq tr1 + +tr2: and #$1f + asl + tay + lda music_notes-2,y + sta AUDC0 + lda music_notes-1,y + sta AUDF0 + lda music-1,x + lsr + lsr + and #$38 + sta tracker_c + lda music,x + asl + tay + lda music_notes-2,y + sta AUDC1 + lda music_notes-1,y + sta AUDF1 + inx + inx + stx tracker + lda #$3f + sta tracker_v +tr3: dec tracker_v + lda tracker_v + lsr + lsr + cpx #43 + bcs tr1 + lda tracker_v + and #$03 + bne tr4 + lda #$02 +tr4: ora #$0c +tr1: sta AUDV0 + sta AUDV1 +tr0: + + lda aa_x_pos + cmp #$0f ; Corrects left side X-pos, for some reason it breaks. + bcs *+4 + sbc #2 + set_x_position 0 ; Player 0 + ; ldx #1 ; Player 1 + lda sun_pos + set_x_position 1 ; Player 1 + lda #84 + set_x_position 2 ; Missile 0 + lda #$20 + sta NUSIZ0 + sta NUSIZ1 + + jsr build_hole_map + + lda #$00 + sta GRP0 + sta GRP1 + sta COLUPF + lda #$20 + sta CTRLPF + + jmp ba0 + +ba1: + + ; + ; Score zone + ; + sta WSYNC ; 0 + ldx #$00 ; 3 + stx COLUBK ; 5 Background color + stx GRP0 ; 8 + stx GRP1 ; 11 + stx REFP0 ; 14 + stx REFP1 ; 17 + sta en5 ; 20 + lda score ; 23 + and #$0f ; 26 + asl ; 28 + asl ; 30 + asl ; 32 + sta en4 ; 34 + lda score ; 37 + lsr ; 40 + and #$78 ; 42 + sta en3 ; 44 + lda #$21 ; 47 + sta CTRLPF ; 49 + lda #lives_color ; 52 + sta COLUPF ; 54 + ldx lives ; 57 + cpx #7 ; 60 + bcc aa88 ; 62 + ldx #7 ; 64 +aa88: + lda lives_pf,x ; 66 + sta WSYNC ; 71 + sta PF0 + lda lives_pf+8,x + sta PF1 + lda lives_pf+16,x + sta PF2 + lda score+1 ; 35 + and #$0f ; 38 + asl ; 40 + asl ; 42 + asl ; 44 + sta en2 ; 46 + lda score+1 ; 49 + lsr ; 52 + and #$78 ; 54 + sta en1 ; 56 + lda score+2 ; 59 + and #$0f ; 62 + asl ; 64 + asl ; 66 + asl ; 68 + sta en0 ; 70 + ldx #0 + + lda #score_color ; 73 + jmp $f400 ; 75 + org $F400 +mp0: + sta WSYNC + stx GRP0 + stx GRP1 + ldy #numbers>>8 ; 8 + sty en0+1 ; 11 + sty en1+1 ; 14 + sty en2+1 ; 17 + sty en3+1 ; 20 + sty en4+1 ; 23 + sty en5+1 ; 26 + + sta COLUP0 ; 29 + sta COLUP1 ; 32 + lda #$03 ; 35 3 copies together + ldx #$f0 ; 37 + stx RESP0 ; 39 + stx RESP1 ; 42 + stx HMP0 ; 45 + sta NUSIZ0 ; 48 + sta NUSIZ1 ; 51 + lsr ; 53 + sta VDELP0 ; 56 + sta VDELP1 ; 59 + lsr + sta HMP1 + sta WSYNC ; 62 + sta HMOVE ; 3 + lda #4 + sta temp2 +mp1: ldy temp2 ; 2 + lda (en0),y ; 7 + sta GRP0 ; 10 + sta WSYNC ; 13 + 61 = 76 + lda (en1),y ; 5 + sta GRP1 ; 8 + lda (en2),y ; 13 + sta GRP0 ; 16 + lda (en3),y ; 21 + sta temp1 ; 24 Write (this depends on being at "root" stack pos) + lda (en4),y ; 29 (and of course not being called) + tax ; 31 + lda (en5),y ; 36 + tay ; 38 + lda temp1 ; 41 Read + sta GRP1 ; 44 + stx GRP0 ; 47 + sty GRP1 ; 50 + sta GRP0 ; 53 + dec temp2 ; 58 + bpl mp1 ; 60/61 +mp3: + ; Looks for code spanning page + if (mp1&$ff00)!=(mp3&$ff00) + lda megabug3 ; :P + endif + echo "mp0 ",mp0," mp1 ",mp1," mp3 ",mp3 + + ; + ; End of graphics (204 lines) + ; + ldx #$00 + lda #2 + sta WSYNC + sta VBLANK + stx VDELP0 + stx VDELP1 + stx GRP0 + stx GRP1 + stx PF0 + stx PF1 + stx PF2 + + ; + ; Start overscan timer + ; + lda #43 ; 37 lines * 76 = 2812 cycles / 64 = 43.9375 + sta TIM64T + + lda flags + and #$03 + cmp #$02 ; Tongue touched? + bne aa67 + jmp wait_overscan + +aa67: lda eggs + bne aa70 + ldx aa_x_pos + cpx #52 + bne aa71 + inc aa_x_pos + lda #43 ; Mountain King (Grieg) + sta tracker + lda #1 + sta tracker_c + lda #0 + sta filling + sta flags + ldx #tongue_size*2-1 + lda #0 +aa72: sta tongue1+W,x + dex + bpl aa72 + + sta enemy0_t + sta enemy1_t + sta enemy2_t + sta enemy3_t + sta enemy4_t + sta enemy5_t + sta enemy6_t + sta enemy7_t + sta enemy8_t + sta enemy9_t + sta enemy10_t + sta enemy11_t + sta enemy12_t + sta enemy13_t + sta enemy14_t + sta enemy15_t + sta holeCols + sta holeCols+1 + sta holeCols+2 + sta holeCols+3 + sta holeCols+4 + sta holeCols+5 + sta holeCols+6 + sta holeCols+7 + lda #$ff + sta tip_y +aa71: jmp aa34 + +aa70: lda flags + and #$fc + sta flags + + ; + ; Check for collisions of enemies versus tongue (playfield pixels) + ; + ldx #15 +aa53: lda enemy0_t,x + tay + cmp #non_interactive_sprites + bcc aa86 + cpx #8 + bcs aa45 + lda cxLst,x + and #$20 + beq aa86 ; No, jump + bne aa127 + +aa45: lda cxLst-8,x + asl + bpl aa86 + +aa127: tya + and #$f0 + cmp #sprite_spider + beq aa106 + cmp #sprite_worm ; Is it a worm? + beq aa55 + bne aa87 + +aa86: + dex + bpl aa53 + jmp aa78 + + ; + ; Spider + ; * Kills if touches tongue tip + ; +aa106: + txa + and #$07 + cmp tip_y ; Is it at same level than tongue? + bne aa86 ; No, jumps + lda enemy0_x,x + tay + sbc #3 + lsr + lsr + cmp tip_x + beq aa56sc + tya + clc + adc #10 + lsr + lsr + cmp tip_x + beq aa56sc + bne aa86 + +aa87: + ; + ; Ant: + ; * Eaten if tongue tip. + ; * Kills if it touch any other part of tongue. + ; + txa + and #$07 + cmp tip_y ; Is it at same level than tongue? + bne aa56sc ; No, kills + lda enemy0_x,x + sbc #3 + tay + lsr + lsr + cmp tip_x + beq aa57 + bcs aa56 + tya + clc + adc #10 + lsr + lsr + cmp tip_x + beq aa57 + bcc aa56 + +aa57: lda enemy0_t,x + cmp #sprite_queen_ant+$20 + bcs aa125 + cmp #sprite_queen_ant + bcs aa59 +aa125: cmp #pricey_sprites ; Red ant and caterpillar + bcs aa97 + sed + lda ants_eaten + adc #1 + sta ants_eaten + cld + lda #sprite_explosion; Goodbye ant + .byte $2c ; BIT opcode to jump +aa97: lda #sprite_150 + ldy #11 + bne aa79 + +aa56sc: jmp aa56 + +aa59: jsr clear_enemies + ldy #33 +aa79: sty effect1 + bne aa60 + + ; + ; Worm: + ; * Eaten if tongue tip from behind. + ; * Kills only if tongue tip in front. + ; +aa55: txa + and #$07 + cmp tip_y + bne aa54 + lda enemy0_x,x + tay + sbc #3 + lsr + lsr + cmp tip_x + beq aa58 + bcs aa54 + tya + clc + adc #10 + lsr + lsr + cmp tip_x + beq aa58 + bcc aa54 +aa58: lda tip_dir + beq aa56 + lsr ; $ff left $00 right + eor enemy0_t,x + and #ENEMY_SPEED_MASK + bne aa56 + lda flags + and #~FLAGS_WORM + sta flags + inc worms_eaten + lda #20 + sta effect1 + lda #sprite_200 ; 200 points +aa60: sta enemy0_t,x + bne aa54 + + ; Kill +aa56: lda flags + and #$fc + ora #$01 + sta flags + +aa54: + dex + bmi aa78 + jmp aa53 +aa78: + + lda flags + and #$03 + beq aa52 + jmp wait_overscan + + ; + ; Invoke an enemy + ; +aa52: + dec timer + beq aa95 + jmp aa14 +aa95: + jsr random_proc ; Get a random number (just because :P) + tay ; Save it + and #$0e ; Restart timer + ora #$01 + sta timer + lda antHill ; Starts at 1 + clc + adc #$03 ; Level 1 - fills 4 tunnels, 2 - 5 t., 4 and so- 6 t. + cmp #$06 ; No more than 6 tunnels + bcc aa92 + lda #$06 +aa92: asl + sta temp1 + lda filling + cmp temp1 + bcc aa102 +aa103: jmp aa8 +aa102: + and #$0e + lsr + eor #$07 + tax + cmp #$07 + bne aa111 + lda enemy8_t,x + bne aa111 + lda #FLAGS_SPIDER + bit flags + bne aa111 + lda sun_pos + cmp #8 ; Now it's night? + beq aa110 ; No, jump +aa111: lda enemy0_t,x ; There is space for a common enemy? + beq aa12 ; Yep, jump. +aa110: lda enemy8_t,x ; There is space for a worm/spider? + bne aa103 ; No, jump + cpx #0 ; Top tunnel? + bne aa101 ; No, jump + lda sun_pos + cmp #8 ; Now it's night? + bne aa101 ; No, jump + lda #FLAGS_SPIDER + bit flags ; We have already the spider? + bne aa101 ; Yes, jump + ora flags + sta flags + lda #ENEMY_MAX_X + sta enemy8_x,x + tya + and #ENEMY_SPEED_MASK + ora #sprite_spider + sta enemy8_t,x + bne aa8 + +aa101: + txa + and #$07 + cmp tip_y + bne aa103 + lda #FLAGS_WORM + bit flags ; Already a worm in screen? + bne aa8 ; Yes, jump + ora flags + sta flags + tya + and #$40 + beq aa37 + lda enemy0_x,x + cmp #40 + bcc aa90 +aa91: lda #ENEMY_MIN_X + sta enemy8_x,x + tya + and #ENEMY_SPEED_MASK + ora #sprite_worm+ENEMY_DIR_MASK + sta enemy8_t,x + bne aa8 + +aa37: lda enemy0_x,x + cmp #129 + bcs aa91 +aa90: lda #ENEMY_MAX_X + sta enemy8_x,x + tya + and #ENEMY_SPEED_MASK + ora #sprite_worm + sta enemy8_t,x + bne aa8 + +aa12: tya + and #$40 + beq aa15 + lda #ENEMY_MIN_X + sta enemy0_x,x + tya + and #ENEMY_SPEED_MASK + ora enemies_going_right,x + sta enemy0_t,x + bne aa8 + +aa15: lda #ENEMY_MAX_X + sta enemy0_x,x + tya + and #ENEMY_SPEED_MASK + ora enemies_going_left,x + sta enemy0_t,x + ; bne aa8 + +aa8: ldx antHill + cpx #32 + bcc aa93 + ldx #31 +aa93: lda filling + clc + adc #2 + cmp refilling,x + bne aa94 + lda #0 +aa94: sta filling +aa14: + + ; + ; Sun animation + ; + lda frame + and #$1f ; Each 32 frames + bne aa81 + lda sun_pos + cmp #8 + beq aa81 + dec sun_pos ; Move sun left by one pixel + cmp #9 + bne aa81 + lda #129 ; Click effect + sta effect0 +aa81: + + ; + ; Enemy animation and movement + ; + ldy #0 + lda frame + and #$07 ; Enemies change animation frame each 8 frames + bne aa11 + ldy #8 +aa11: and #$03 ; Enemies move each 4 frame + beq aa117 + jmp aa43 +aa117: + ldx #$0f +aa10: + lda enemy0_t,x ; Active enemy? + bne aa118 ; Yes, jump +aa120: dex + bpl aa10 + jmp aa43 + + ; + ; Check first for brief sprites (explosion, 150 and 200 points) + ; +aa118: cmp #non_interactive_sprites + bcs aa39 +aa49: inc enemy0_t,x + cmp #sprite_150+$03 + beq aa96 + cmp #sprite_200+$03 + beq aa46 + cmp #sprite_200_spider+$03 + beq aa46 + cmp #sprite_explosion+$03 + bne aa38sd + lda #$10 ; 100 points + .byte $2c ; BIT opcode to jump +aa46: lda #$20 ; 200 points + .byte $2c ; BIT opcode to jump +aa96: lda #$15 ; 150 points + jsr score_points + lda #$00 + sta enemy0_t,x +aa38sd: jmp aa38 + ; + ; All other sprites + ; +aa39: and #$f0 + cmp #sprite_spider + bne aa108 + ; + ; Spider handling + ; + lda tip_y ; Tongue tip active? + bmi aa120 ; No, jump (spider stays quiet) + txa ; Get vertical position of spider + and #$07 + cmp tip_y ; Comparison with tongue tip vertical position. + beq aa109 ; Same vertical position? yes, jump + bcs aa120 ; Jump if spider deeper than tongue tip. It shouldn't happen + stx temp1 + tax + lda holeCols,x ; Check if tongue goes thru a hole !!! + lsr + bcs aa112 + lsr + bcs aa113 + lsr + bcs aa114 + lda #0 + .byte $2c ; BIT opcode to jump +aa114: lda #8 + .byte $2c ; BIT opcode to jump +aa113: lda #16 + .byte $2c ; BIT opcode to jump +aa112: lda #24 + clc + adc kernelLst,x + tax + lda hole_pos,x ; Now get the X-coordinate for hole + ldx temp1 + sec ; There's an X-coordinate, center spider over it + sbc #2 + jmp aa116 + + ; + ; Spider at same level than tongue tip + ; +aa109: lda tip_x + asl + asl + beq aa116 + sbc #1 +aa116: sbc enemy0_x,x ; Take a decision of direction to move + beq aa119 ; At target position? yes, jump + bcc aa44 + bcs aa40 + + ; + ; Try to lower spider by one level + ; +aa119: cpx #1 ; Is spider at bottom-most position? + beq aa41 ; Yes, jump, stay quiet + cpx #9 + beq aa41 + lda enemy0_t-1,x ; Is it busy the next enemy slot? + bne aa41 ; Yes, jump, stay quiet + lda enemy0_x,x ; Copy X position + sta enemy0_x-1,x + lda enemy0_t,x ; Copy type + sta enemy0_t-1,x + lda #0 ; Erase spider from old slot + sta enemy0_t,x + beq aa41 + + ; + ; Ant, red ant, worm or centipede + ; +aa108: + cmp #sprite_queen_ant + beq aa38 + cmp #sprite_queen_ant+$10 + beq aa38 + lda enemy0_t,x + and #ENEMY_SPEED_MASK; Fast? + beq aa44 + lda frame + and #$04 +aa38sc: bne aa38 +aa44: + lda enemy0_t,x + and #ENEMY_DIR_MASK ; Goes to left? + bne aa40 ; No, jump + dec enemy0_x,x + lda enemy0_x,x + cmp #ENEMY_MIN_X ; Reached left limit? + bne aa41 ; No, jump +aa42: + lda enemy0_t,x + and #$f0 + cmp #sprite_worm + bne aa98 + lda flags + and #~FLAGS_WORM + sta flags +aa98: cmp #sprite_spider ; It could happen *sigh* + bne aa107 + lda flags + and #~FLAGS_SPIDER + sta flags +aa107: lda #0 + sta enemy0_t,x + beq aa38 + +aa40: + inc enemy0_x,x + lda enemy0_x,x + cmp #ENEMY_MAX_X ; Reached right limit? + beq aa42 ; Yes, jump +aa41: + tya + eor enemy0_t,x ; Changed animation frame if required + sta enemy0_t,x +aa38: dex + bmi aa43 + jmp aa10 +aa43: + + ; + ; Queen ant flashing + ; + lda frame + and #$01 + bne aa34 + lda enemy0_t + beq aa32 + cmp #non_interactive_sprites + bcs aa51 + adc #1 + cmp #sprite_1000+8 + bne aa32 + jsr score_points_2 ; 1000 points + lda #0 + beq aa32 + +aa51: adc #$07 + cmp #sprite_queen_ant+$20 + bcc aa32 + sbc #$20 +aa32: sta enemy0_t + + lda enemy8_t + beq aa33 + cmp #non_interactive_sprites + bcs aa50 + adc #1 + cmp #sprite_1000+8 + bne aa33 + jsr score_points_2 ; 1000 points + lda #0 + beq aa33 + +aa50: adc #$07 + cmp #sprite_queen_ant+$20 + bcc aa33 + sbc #$20 +aa33: sta enemy8_t +aa34: + ; + ; Count frame, step on random generator + ; + inc frame + jsr random_proc + ; + ; Aardvark enters game + ; + ldx aa_x_pos + cpx #52 + beq aa7 + lda frame + and #$07 + bne aa31 + inc aa_x_pos + cpx #51 + bne aa31 + ; Start tongue + lda #$02 + sta holeCols+7 + ldx #19 + stx tip_x + lda #7 + sta tip_y + lda #0 + sta tip_dir + jsr point_egg + ldx tip_x + lda tip_y + jsr draw_block +aa31: + lda frame + and #$07 + bne aa4 + lda aa_offset + eor #$28 + sta aa_offset +aa4: + jmp aa20 + +aa7: + lda #0 + + jsr fire_button ; Fire button pressed? + bpl aa22 ; No, jump + + ldx tip_x ; Get tongue coordinates + lda tip_y + cpx #19 + bne aa19 + cmp #7 + beq aa123 ; Is it at base? yes, jump without doing anything +aa19: + jsr clear_block + lda effect0 + cmp #128 + bcs aa122 + cmp #66 + bcs aa121 +aa122: + lda #66 + sta effect0 +aa121: ldx tip_x + beq aa23 + dex + lda tip_y + jsr check_block + bne aa24 + inx + +aa23: cpx #39 + beq aa25 + inx + lda tip_y + jsr check_block + bne aa24 + +aa25: ldx tip_y + lda #$00 + sta holeCols,x + inc tip_y + jmp aa20 + +aa24: stx tip_x + jmp aa20 + +aa123: jmp aa28 + +aa22: + jsr build_hole_map + lda SWCHA + ; Note #$10 isn't used (going up) + and #$20 ; Going down? + beq aa17 ; Yes, jump +aa18: lda SWCHA + bmi aa16 ; Going right? No, jump + lda tip_y + bmi aa28 + beq aa28 ; Last tunnel? Yes, cannot move + lda frame + lsr + bcc aa28 + ldx tip_x + cpx #39 + beq aa28 + inx +aa26: lda tip_y + jsr check_block + bne aa30 + txa + sec + sbc tip_x + sta tip_dir + stx tip_x + lda tip_y + jsr point_egg + ldx tip_x + lda tip_y + jsr draw_block + jmp aa20 + +aa30: txa + pha + ldx tip_x + lda tip_y + jsr clear_block + pla + sta tip_x +aa28: jmp aa20 + +aa16: rol ; Going left? + bmi aa20 + lda tip_y + bmi aa20 + beq aa20 ; Last tunnel? Yes, cannot move + lda frame + lsr + bcc aa20 + ldx tip_x + beq aa20 + dex + bpl aa26 + + ; + ; Going down + ; +aa17: ldx tip_y ; Get row of tongue tip + bmi aa18 ; Invalid? Yes, jump to check for right/left + beq aa18 ; Vertical limit? Yes, jump to check for right/left + lda kernelLst-1,x + tax + lda tip_x ; Tongue tip at 0? + beq aa18 ; Jump to check for right/left + cmp hole_pos,x + beq aa126 + cmp hole_pos+8,x + beq aa27 + cmp hole_pos+16,x + beq aa115 + cmp hole_pos+24,x + bne aa18 ; No hole, so jump to check for right/left + ldy #$01 + .byte $2c ; BIT opcode to jump +aa115: ldy #$02 + .byte $2c ; BIT opcode to jump +aa126: ldy #$08 + .byte $2c ; BIT opcode to jump +aa27: ldy #$04 + tya + ldx tip_y + dex + ora holeCols,x + sta holeCols,x + stx tip_y + txa + ldx tip_x + jsr point_egg + ldx tip_x + lda tip_y + jsr draw_block + lda #0 + sta tip_dir + +aa20: + +wait_overscan: + lda INTIM + bne wait_overscan + sta WSYNC + sta WSYNC + + lda aa_x_pos + cpx #135 + bne aa74 + jsr bonus_screen + jmp next_level +aa74: + + lda flags + and #$03 + cmp #$02 ; Has finished tongue color changing animation? + beq aa68 ; Yes, jump + jmp main_loop ; Continue with main loop + +aa68: dec lives + jsr bonus_screen + lda lives + bmi aa89 + jmp restart_level ; Restart level + +aa89: jmp title_screen + + ; + ; Bonus screen + ; +bonus_screen: + ldx worms_eaten + beq aa99 +aa100: + lda ants_eaten + jsr score_points + dex + bne aa100 +aa99: + rts + + ; + ; Run random number generator + ; +random_proc: + ; + ; Random number generator + ; + lda rand + sec + ror + eor frame + ror + eor rand + ror + eor #9 + sta rand + rts + + ; + ; Check for fire button + ; +fire_button_single: + lda INPT4 + eor #$ff + tax + eor prev_button + stx prev_button + bpl fire_button1 + txa +fire_button1: + rts + +fire_button: + lda INPT4 + eor #$ff + sta prev_button + rts + + ; + ; Calculate memory zone for tongue block + ; a = zone (0-7) + ; +calc_zone: + asl ; x2 + asl ; x4 + sta en0 + asl ; x8 + adc en0 ; x12 + adc #tongue1 + sta en0 + adc #W + sta en0+1 + sta en1+1 + rts + + ; + ; Check for tongue block + ; + ; a = zone (0-5) + ; x = x pixel (0-39) + ; +check_block: + jsr calc_zone + lda pixel_to_byte,x + tay + lda (en1),y + and pixel_to_bit,x + rts + + ; + ; Clear enemies (used when eating queen ant) + ; +clear_enemies: + txa + pha + ldx #9 +aa61: lda enemy0_t,x + cmp #non_interactive_sprites + bcc aa62 + and #$f0 + cmp #sprite_worm + beq aa63 + cmp #sprite_spider + beq aa104 + cmp #pricey_sprites + bcs aa64 + lda #sprite_explosion + .byte $2c ; BIT opcode to jump +aa63: lda #sprite_200 + .byte $2c ; BIT opcode to jump +aa64: lda #sprite_150 + .byte $2c ; BIT opcode to jump +aa104: lda #sprite_200_spider + sta enemy0_t,x + cmp #sprite_200_spider + bne aa105 + lda flags + and #~FLAGS_SPIDER + sta flags +aa105: + cmp #sprite_200 ; Only a worm gives a 200 points bonus + bne aa62 + lda flags + and #~FLAGS_WORM + sta flags +aa62: dex + bpl aa61 + pla + tax + lda #sprite_1000 + rts + + ; + ; Give points per egg eaten + ; + ; a = zone (0-7) + ; x = x pixel (0-39) + ; +point_egg: + cmp #0 + beq aa35 + jsr calc_zone + lda en1 + clc + adc #tongue_to_eggs + sta en1 + lda pixel_to_byte,x + tay + lda (en1),y + and pixel_to_bit,x + beq aa35 + lda eggs + ror + lda #1 + bcc aa77 + lda #6 +aa77: sta effect0 + dec eggs + lda #1 + + ; Score 1 point for egg eaten +score_points: + clc + sed + adc score + sta score +aa48: lda score+1 + adc #0 + sta score+1 + lda score+2 + adc #0 + sta score+2 + cld +aa35: + rts + +score_points_2: + sec + sed + bcs aa48 + + ; + ; Draw a tongue block + ; + ; a = zone (0-7) + ; x = x pixel (0-39) + ; +draw_block: + jsr calc_zone + lda pixel_to_byte,x + tay + lda (en1),y + ora pixel_to_bit,x + sta (en0),y + lda en0 + clc + adc #tongue_to_eggs + sta en0 + lda en1 + adc #tongue_to_eggs + sta en1 + lda (en1),y + ora pixel_to_bit,x + sta (en0),y + rts + + ; + ; Clear a tongue block + ; + ; a = zone (0-7) + ; x = x pixel (0-39) + ; +clear_block: + jsr calc_zone + lda pixel_to_byte,x + tay + lda (en1),y + and pixel_to_bit2,x + sta (en0),y + lda en0 + clc + adc #tongue_to_eggs + sta en0 + lda en1 + adc #tongue_to_eggs + sta en1 + lda (en1),y + and pixel_to_bit2,x + sta (en0),y + rts + + ; + ; Build random hole map for the current level seed + ; See also random.c + ; +build_hole_map: SUBROUTINE +.lastPat = tmpVars + lda #255 + sta .lastPat + ldy #NUM_FLOORS-1 + ldx level_seed +.0: + lda random_level,x + tax + and #$07 + cmp .lastPat + bne .1 + txa + lsr + lsr + tax + and #$07 +.1: + sta kernelLst,y + sta .lastPat + dey + bne .0 + sty kernelLst ; Fixed tunnel for queen ants + rts + + ; + ; With the help of: + ; + ; http://alienbill.com/2600/basic/music/tune2600.html + ; http://piano-player.info/ + ; + + ; + ; Songs refer to these notes. + ; These notes contain frequency and "instrument" and are + ; choosen per usage in song instead of full "continuous" octaves + ; +music_notes: + .byte 12,12 ; 1 + .byte 4,28 + .byte 4,25 ; 3 + .byte 4,22 + .byte 4,18 ; 5 + .byte 4,16 + + .byte 12,20 ; 7 + .byte 12,19 + .byte 12,18 ; 9 + .byte 12,17 + .byte 12,15 ; 11 + .byte 12,14 + .byte 12,13 ; 13 + .byte 12,11 + .byte 4,31 ; 15 + + .byte 6,7 ; 16 + .byte 6,6 ; 17 + .byte 12,27 ; 18 + .byte 12,23 ; 19 + + .byte 0,0 ; 20 Unused + + .byte 6,7 ; 21 + .byte 12,30 + .byte 12,27 ; 23 + .byte 12,24 + .byte 12,20 ; 25 + .byte 12,18 + + .byte 0,0 ; 27 Unused + .byte 1,12 ; 29 + .byte 1,6 ; 31 + .byte 1,13 ; 33 + .byte 1,9 ; 35 + .byte 0,0 + + ; + ; Global label to access music + ; +music: + + ; + ; Ranz des vaches + ; +music_ranz_des_vaches: + .byte 6*32+2,22 ; 1 -> tracker + .byte 1*32+3,23 + .byte 1*32+1,21 + .byte 1*32+2,22 + .byte 1*32+4,24 + .byte 1*32+1,21 + + .byte 6*32+2,22 + .byte 1*32+3,23 + .byte 1*32+1,21 + .byte 1*32+2,22 + .byte 1*32+4,24 + .byte 1*32+1,21 + + .byte 6*32+2,22 + .byte 1*32+4,24 + .byte 1*32+6,26 + .byte 1*32+5,25 + .byte 1*32+1,21 + .byte 1*32+4,24 + + .byte 5*32+3,23 + .byte 1*32+5,25 + + .byte 0,0 + + ; + ; Mountain king + ; +music_mountain_king: + .byte 2*32+7,16 ; 43 -> tracker + .byte 2*32+9,16 + .byte 2*32+10,18 + .byte 2*32+11,18 + .byte 2*32+13,16 + .byte 2*32+10,16 + .byte 4*32+13,18 + + .byte 2*32+12,16 + .byte 2*32+9,16 + .byte 4*32+12,18 + .byte 2*32+11,16 + .byte 2*32+8,16 + .byte 4*32+11,18 + + .byte 2*32+7,16 + .byte 2*32+9,16 + .byte 2*32+10,18 + .byte 2*32+11,18 + .byte 2*32+13,16 + .byte 2*32+10,16 + .byte 2*32+13,18 + .byte 2*32+15,18 + + .byte 2*32+14,17 + .byte 2*32+13,17 + .byte 2*32+10,19 + .byte 2*32+13,19 + .byte 7*32+14,17 + + .byte 0,0 + + ; + ; Death music + ; +music_touch: + .byte 4*32+28,28 ; 97 -> tracker + .byte 4*32+29,29 + .byte 4*32+30,30 + .byte 7*32+31,31 + .byte 0,0 + + ; + ; Global label to access sound effects + ; +sound_effect: + .byte 0 + + .byte $04,$81 ; 1 Eating egg (1) + .byte $03,$71 ; 3 + .byte 0 ; 5 + + .byte $08,$81 ; 6 Eating egg (2) + .byte $07,$71 ; 8 + .byte 0 ; 10 + + .byte $07,$88 ; 11 Eating bug + .byte $06,$88 ; 13 + .byte $07,$88 ; 15 + .byte $06,$88 ; 17 + .byte 0 ; 19 + + .byte $1c,$fc ; 20 Eating worm + .byte $1c,$cc ; 22 + .byte $1c,$ac ; 24 + .byte $1c,$8c ; 26 + .byte $1c,$6c ; 28 + .byte $1c,$4c ; 30 + .byte 0 ; 32 + + .byte $1c,$fc ; 33 Eating queen + .byte $1c,$cc ; 35 + .byte $1c,$ac ; 37 + .byte $1c,$8c ; 39 + .byte $1c,$6c ; 41 + .byte $1c,$4c ; 43 + .byte $10,$ec ; 45 + .byte $10,$cc ; 47 + .byte $10,$ac ; 49 + .byte $10,$6c ; 51 + .byte $10,$4c ; 53 + .byte $10,$3c ; 55 + .byte $10,$4c ; 57 + .byte $10,$3c ; 59 + .byte $10,$4c ; 61 + .byte $10,$3c ; 63 + .byte 0 ; 65 + + .byte $1f,$c4 ; 66 Retrain tongue + .byte $1e,$b4 ; 68 + .byte $1d,$c4 ; 70 + .byte $1c,$b4 ; 72 + .byte $1b,$c4 ; 74 + .byte $1a,$b4 ; 76 + .byte $19,$c4 ; 78 + .byte $18,$b4 ; 80 + .byte $17,$c4 ; 82 + .byte $16,$b4 ; 84 + .byte $15,$c4 ; 86 + .byte $14,$b4 ; 88 + .byte $13,$c4 ; 90 + .byte $12,$b4 ; 92 + .byte $11,$c4 ; 94 + .byte $10,$b4 ; 96 + .byte $0f,$c4 ; 98 + .byte $0e,$b4 ; 100 + .byte $0d,$c4 ; 102 + .byte $0c,$b4 ; 104 + .byte $0b,$c4 ; 106 + .byte $0a,$b4 ; 108 + .byte $09,$c4 ; 110 + .byte $08,$b4 ; 112 + .byte $07,$c4 ; 114 + .byte $06,$b4 ; 116 + .byte $05,$c4 ; 118 + .byte $04,$b4 ; 120 + .byte $03,$c4 ; 122 + .byte $02,$b4 ; 124 + .byte $01,$c4 ; 126 + .byte 0 + + .byte $18,$c1 ; 129 Click effect for sunset + .byte $0c,$61 ; 131 + .byte $06,$a1 ; 133 + .byte $03,$41 ; 135 + .byte $02,$81 ; 137 + .byte $01,$21 ; 139 + .byte 0 + + echo "Before random_level at $fd00: ",* + + org $fd00 + + .include "aardlev.asm" + + org $fe00 +fine_adjustment: + .byte $70 ; -7 + .byte $60 ; -6 + .byte $50 ; -5 + .byte $40 ; -4 + .byte $30 ; -3 + .byte $20 ; -2 + .byte $10 ; -1 + .byte $00 ; 0 + .byte $f0 ; +1 + .byte $e0 ; +2 + .byte $d0 ; +3 + .byte $c0 ; +4 + .byte $b0 ; +5 + .byte $a0 ; +6 + .byte $90 ; +7 + +pixel_to_byte: + .byte 0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2 + .byte 3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5 + +pixel_to_bit: + .byte $10,$20,$40,$80 + .byte $80,$40,$20,$10,$08,$04,$02,$01 + .byte $01,$02,$04,$08,$10,$20,$40,$80 + + .byte $10,$20,$40,$80 + .byte $80,$40,$20,$10,$08,$04,$02,$01 + .byte $01,$02,$04,$08,$10,$20,$40,$80 + +pixel_to_bit2: + .byte $ef,$df,$bf,$7f + .byte $7f,$bf,$df,$ef,$f7,$fb,$fd,$fe + .byte $fe,$fd,$fb,$f7,$ef,$df,$bf,$7f + + .byte $ef,$df,$bf,$7f + .byte $7f,$bf,$df,$ef,$f7,$fb,$fd,$fe + .byte $fe,$fd,$fb,$f7,$ef,$df,$bf,$7f + + ; + ; Position for holes (in "fat" pixels) + ; Note vertical sorting, one line of holes is made from one column of data. + ; A B C D E F G H + ; +hole_pos: + .byte 0, 6, 3, 0, 0, 0, 0, 0 + .byte 12,12, 9, 6, 9, 3, 0,15 + .byte 26,18,20,26,23,15,18,23 + .byte 0,32,35,32, 0,29,29,35 + + ; + ; Lives representation as playfield graphics + ; +lives_pf: + .byte $00,$40,$40,$40,$40,$40,$40,$40 + .byte $00,$00,$80,$a0,$a8,$aa,$aa,$aa + .byte $00,$00,$00,$00,$00,$00,$01,$05 + + ; + ; Refilling constant per level + ; +refilling: + .byte 128,126,124,122,120,118,116,114 + .byte 112,110,108,106,104,102,100,98 + .byte 96,94,92,90,88,86,84,82 + .byte 80,78,76,74,72,70,68,66 + + ; + ; Enemies per tunnel + ; +enemies_going_right: + .byte 0 + .byte 0 + .byte sprite_caterpillar+ENEMY_DIR_MASK + .byte sprite_red_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte 0 + .byte 0 + .byte sprite_caterpillar+ENEMY_DIR_MASK + .byte sprite_red_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + .byte sprite_ant+ENEMY_DIR_MASK + +enemies_going_left: + .byte 0 + .byte 0 + .byte sprite_caterpillar + .byte sprite_red_ant + .byte sprite_ant + .byte sprite_ant + .byte sprite_ant + .byte sprite_ant + .byte 0 + .byte 0 + .byte sprite_caterpillar + .byte sprite_red_ant + .byte sprite_ant + .byte sprite_ant + .byte sprite_ant + .byte sprite_ant + + org $ff00 +numbers: + .byte $fe,$c6,$c6,$c6,$fe,$00,$00,$00 + .byte $78,$30,$30,$70,$30,$00,$00,$00 + .byte $fe,$c0,$fe,$06,$fe,$00,$00,$00 + .byte $fe,$06,$fe,$06,$fe,$00,$00,$00 + .byte $06,$06,$fe,$c6,$c6,$00,$00,$00 + .byte $fe,$06,$fe,$c0,$fe,$00,$00,$00 + .byte $fe,$c6,$fe,$c0,$fe,$00,$00,$00 + .byte $18,$18,$0c,$06,$fe,$00,$00,$00 + .byte $fe,$c6,$fe,$c6,$fe,$00,$00,$00 + .byte $fe,$06,$fe,$c6,$fe,$00,$00,$00 + + org $fffc + .word START ; RESET + .word START ; BRK + diff --git a/pretty6502 b/pretty6502 index ab66695..29dcbb9 100755 Binary files a/pretty6502 and b/pretty6502 differ diff --git a/pretty6502.c b/pretty6502.c index f6d564d..69c46bd 100644 --- a/pretty6502.c +++ b/pretty6502.c @@ -37,8 +37,8 @@ void request_space(FILE *output, int *current, int new, int force) */ while (1) { if (tabs == 0) { - fputc(' ', output); - (*current)++; + fprintf(output, "%*s", new - *current, ""); + *current = new; } else { fputc('\t', output); *current = (*current + tabs) / tabs * tabs; @@ -61,12 +61,8 @@ int main(int argc, char *argv[]) int align_comment; FILE *input; FILE *output; - char line[4096]; - int input_lines; int allocation; char *data; - int current_line; - int next_position; char *p; char *p1; char *p2; @@ -198,43 +194,53 @@ int main(int argc, char *argv[]) /* ** Open input file, measure it and read it into buffer */ - input = fopen(argv[c], "r"); + input = fopen(argv[c], "rb"); if (input == NULL) { fprintf(stderr, "Unable to open input file: %s\n", argv[c]); exit(1); } fprintf(stderr, "Processing %s...\n", argv[c]); - input_lines = 0; - allocation = 0; - while (fgets(line, sizeof(line) - 1, input)) { - allocation += strlen(line) + 1; - input_lines++; - } - fclose(input); - data = malloc(allocation); + fseek(input, 0, SEEK_END); + allocation = ftell(input); + data = malloc(allocation + sizeof(char)); if (data == NULL) { fprintf(stderr, "Unable to allocate memory\n"); + fclose(input); exit(1); } - input = fopen(argv[c], "r"); - if (input == NULL) { - fprintf(stderr, "Unable to open input file: %s\n", argv[c]); + fseek(input, 0, SEEK_SET); + if (fread(data, sizeof(char), allocation, input) != allocation) { + fprintf(stderr, "Something went wrong reading the input file\n"); + fclose(input); + free(data); exit(1); } - current_line = 0; - next_position = 0; - while (fgets(line, sizeof(line) - 1, input)) { - if (current_line >= input_lines || next_position + strlen(line) + 1 > allocation) { - fprintf(stderr, "Buuurp! the source file grew!\n"); - fclose(input); - exit(1); - } - strcpy(data + next_position, line); - next_position += strlen(line) + 1; - current_line++; - } fclose(input); + /* + ** Ease processing of input file + */ + request = 0; + p1 = data; + p2 = data; + while (p1 < data + allocation) { + if (*p1 == '\r') { /* Ignore \r characters */ + p1++; + continue; + } + if (*p1 == '\n') { + p1++; + *p2++ = '\0'; /* Break line */ + request = 1; + continue; + } + *p2++ = *p1++; + request = 0; + } + if (request == 0) + *p2++ = '\0'; /* Force line break */ + allocation = p2 - data; + /* ** Now generate output file */ @@ -245,7 +251,7 @@ int main(int argc, char *argv[]) exit(1); } p = data; - for (input_lines = 0; input_lines < current_line; input_lines++) { + while (p < data + allocation) { current_column = 0; p1 = p; if (*p1 && !isspace(*p1) && *p1 != ';') { /* Label */ @@ -276,7 +282,7 @@ int main(int argc, char *argv[]) request = start_operand; request_space(output, ¤t_column, request, 1); p2 = p1; - while (*p2 && *p2 != ';' && *p2 != '\r' && *p2 != '\n') { + while (*p2 && *p2 != ';') { if (*p2 == '"') { p2++; while (*p2 && *p2 != '"') @@ -311,7 +317,7 @@ int main(int argc, char *argv[]) request = start_mnemonic; request_space(output, ¤t_column, request, 0); p2 = p1; - while (*p2 && *p2 != '\r' && *p2 != '\n') + while (*p2) p2++; while (p2 > p1 && isspace(*(p2 - 1))) p2--;