Commodore 64 Uživatelský manuál Strana 48
- Strana / 83
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
10 REM SPRITE EXAMPLE 1...
20 REM THE HOT AIR BALLOON
30 VIC=13~4096:REM THIS IS WHERE THE VIC REGISTERS
BEGIN
35 POKEVIC+21,1:REM ENABLE SPRITE
0
36 POKEVIC+33, 14:REM SET BACKGROUND COLOR TO LIGHT
BLUE
37 POKEVIC+23,1:REM EXPAND SPRITE 0 IN Y
38 POKEVIC+29,1:REM EXPAND SPRITE 0 IN X
40 POKE2040 ,192:REM SET SPRITE 0~S POINTER
180 POKEVIC+0,100:REM SET SPRITE 0~S X POSITION
190 POKEVIC+l, 100:REM SET SPRITE 0~S Y POSITION
220 POKEVIC+39,1:REM SET SPRITE 0~S COLOR
250 FORY=0T063:REM BYTE COUNTER WITH SPRITE LOOP
300 READA:REM READ IN A BYTE
310 POKE192*64+Y,A:REM STORE THE DATA IN SPRITE
AREA
320 I~EXT'T':REM CLOSE LOOP
330 DX=l:DY=l
340 X=PEEK(VIC):REM LOOK AT SPRITE 0~S X POSITION
350 Y=PEEK(VIC+l):REM LOOK AT SPRITE 0~S Y POSITION
360 IFY=500RY=208THENDY=-DY:REM IF Y IS ON THE
EDGE OF THE....
370 REt1 SCREEN, THEt~ REVERSE DELTA Y
380 IFX=24AND(PEEK(VIC+16)AND1)=0THENDX=-DX:REM IF
SPRITE IS....
390 REM TOUCHIt~GTHE LEFT EDGE (>::=24 At~DTHE MSB
FOR SPRITE 0 IS 0), REVERSE IT
400 IFX=40AND(PEEK(VIC+16)AND1)=lTHENDX=-DX:REM IF
SPRITE IS....
410 REI1 TOUCHI.NG
THE RIGHT EDGE (X=40 AND THE t1SB
FOR SPRITE 0 IS 1), REVERSE IT
420IFX=255ANDDX=lTHENX=-1:SIDE=1
430 REM SWITCH TO OTHER SIDE OF THE SCREEN
440 IFX=0ANDDX=-lTHENX=256:SIDE=0
450 REM SWITCH TO OTHER SIDE OF THE SCREEN
460 X=X+DX:REM ADD DELTA X TO X
470 X=XAND255:REM MAKE SURE X IS IN ALLOWED RANOE
480 Y=Y+DY:REM ADD DELTA Y TO Y
485 POKEVIC+16,SIDE
490 POKEVIC,X:REM PUT NEW X VALUE INTO SPRITE 0~S
X POSITION
510 POKEVIC+1,Y:REM PUT NEW Y VALUE INTO SPRITE
0~S 'i POSITION
530 OOT0340
600 REM ***** SPRITE DATA *****
610 DATA0,127,0,1,255,192,3,255,224,3,231,224
620 DATA7,217,240,7,223,240,7,217,240,3,231,224
630 DATA3,255,224,3,255,224,2,255,160, 1,127,64
640 DATAl,62,64,0,156,128,e,156,128,0,73,a,a,73,a
650 DATA0,62,0,0,62,0,0,62,0,0,28,a,0
146 PROGRAMMING GRAPHICS
- GRAPHICS OVERVIEW 2
- GRAPHICS LOCATIONS 3
- SCREEN MEMORY 4
- COLOR MEMORY 5
- 104 PROGRAMMING GRAPHICS 6
- 1EOO- 1FFF 7
- (TURNS INTERRUPTS OFF) 8
- (TURNS INTERRUPTS ON) 8
- STANDARD CHARACTER MODE 9
- = SCREEN CODE*8+(CHARACTER 9
- PROGRAMMABLE CHARACTERS 10
- PROGRAMMINGGRAPHICS 109 11
- - PEEK(I): NEXT 12
- . . . making your 13
- 112 PROGRAMMING GRAPHICS 14
- PROGRAMMING GRAPHICS 113 15
- 10 REM* EXAMPLE1 * 16
- MULTI-COLOR MODE GRAPHICS 17
- BIT PATTERN 18
- II ";: REM LT.RED/ 20
- SET BACKGROUND 21
- COLOR #0 TO BLACK 21
- 120 PROGRAMMING GRAPHICS 22
- BIT MAPPED GRAPHICS 23
- HOW IT WORKS 24
- If you remember the 24
- CHARACTERSsection you will 24
- MAP AT 8192 25
- 124 PROGRAMMING GRAPHICS 26
- = Y AND 7 27
- = BASE+ ROW*320+ CHAR*8+ LINE 28
- MULTI-COLORBIT MAP MODE 29
- = 1/2 byte = 4 bits) 30
- PROGRAMMINGGRAPHICS 129 31
- PRItHII HELLOII; 32
- DEFINING A SPRITE 33
- "" 34
- POINTERS 35
- TURNING SPRITES ON 36
- TURNING SPRITES OFF 37
- MULTI-COLOR MODE 37
- SPRITETO MULTI-COLORMODE 38
- EXPANDED SPRITES 38
- POSITIONING 39
- POKEstatements: 40
- SET BEGINNING 41
- --- 229 ($E5) 42
- - - 54($36) 43
- ,ABI" 44
- = y < = 249 45
- COLLISION DETECTS 46
- SPRITE TO SPRITE COLLISIONS 47
- SPRITE TO DATA COLLISIONS 47
- 530 OOT0340 48
- SPRITE DATA ***** 48
- 'mil" 49
- =1THE~m>,;=- Dr.:: REt1 IF 50
- READA:REM READ IN A BYTE 51
- 485 POKEVIC+16,SIDE 51
- POSITImJ 51
- OTHER GRAPHICS FEATURES 52
- = stored raster count 53
- . = EXCELLENT 54
- SPRITES-ANOTHER LOOK 55
- AllDramE 55
- . . . but V+21 requires less 56
- PROGRAMMING GRAPHICS 155 57
- TV SCREEN 58
- =229 X =229, Y =231 I 59
- . . . POKEthe X POSI 61
- ...raI!tJ!n 62
- PROGRAMMING GRAPHICS 161 63
- DRAWING A SPRITE 64
- 4 2 6 842 1 8 4 2 6 842 1 64
- . . . STEP BY STEP 65
- 164 PROGRAMMING GRAPHICS 66
- POKEs the sprite 67
- VERTICAL SCROLLING 68
- ,,&lIB 69
- Emil' 70
- FORS 1 = 12288 71
- POKES1,Q1 71
- PROGRAMMINGGRAPHICS 169 71
- FORS2 =12352 72
- TO 12414 72
- B8 key and press the key 73
- - (0 times 256) or o. When 74
- PROGRAMMING GRAPHICS 173 75
- LINES100-109 76
- LINE 200: 77
- LINE 300: 77
- EASY SPR1TEMAKING CHART 78
- SPRITEMAKING NOTES 79
- SPRITE COLORS: 80
- MEMORY LOCATION: 80
- PROGRAMMING GRAPHICS 179 81
- I 8 I 4 I 2 I 1 I 82
- " 83
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