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This page was created on 20-Feb-2010 21:06 by Carsten Strotmann

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1 20-Feb-2010 21:06 143 bytes Carsten Strotmann to last

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Bounce in ACTION
Bounce in ACTION

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At line 1 changed one line
General Information \\
!General Information
At line 5 changed one line
Published: ANALOG Issue 20 \\
Published: ANALOG Issue #20 \\
----
!!!Bounce in Action!
__Bounce__, written by Joel Gluck and published in __ANALOG__ issue 15, was a lot of fun to play with, just as Joel predicted it would be. The obvious enhancements that sprang to mind included a higher resolution screen and multiple colors. Unfortunately, higher resolution (and more than four colors) means more points to draw, and BASIC slows to a crawl. Fortunately, Action! from OSS presents an alternative, so I translated and modified the program into Action! Try punching it in; I think you'll agree that the color patterns and dynamic "ball" are fascinating to watch. To use this updated version of __Bounce__, you must have the Action! cartridge installed in your Atari. The program works pretty much like the original: You draw "walls" with your joystick, then hit the space bar to start the ball bouncing. Hitting the space bar again stops the bounce, so you can draw more walls with your joystick, or erase by pushing the fire button. If you press the ESCAPE key while the bouncing is stopped, you will return to the menu screen to review the commands. The program uses Graphics 11, so there are fifteen colors on the screen, and the color of the line drawn changes each time the cursor bounces. The left arrow key (CONTROL *) changes the speed of the bouncing cursor; at the highest speed it's really moving. It can go even faster if you delete the DO OD loops following the sound statements. You will lose the sounds of the bounce if you do, however. So have fun with this juiced-up version of __Bounce__.
----
Action! Listing
{{{
MODULE
At line 14 added 183 lines
; BOUNCE from ANALOG magazine
; Issue #15
; in GTIA Mode 11
BYTE key=764,x,y,console=53279,
attract=77
CARD ctr
INT A,B
PROC wallchex()
IF x>78 THEN x=78 FI
IF y>190 THEN y=190 FI
IF x<1 THEN x=1 FI
IF y<1 THEN y=1 FI
RETURN
PROC menu()
PrintE("BOUNCE from Analog Issue #15")
PrintE(" in GTIA mode 11")
PrintF("%E* Use stick to draw walls,%E")
PrintF("* Hold trigger to erase,%E")
PrintF("* Hit ESC to clear screen,%E")
PrintE("* Hit SPACE to bounce.")
PrintE("* ARROWS control ball speed")
Print("Press any key to continue.")
key=255
While key=255 DO OD
key=255
RETURN
PROC drawscreen()
BYTE curs=752
Graphics (0)
curs=1
Menu()
Graphics(11)
curs=1
SetColor(4,0,4) ;SetColor(4,0,0)
Color=15
Plot(0,0)
DrawTo(79,0)
DrawTo(79,191)
Drawto(0,191)
DrawTo(0,0)
RETURN
PROC flash()
color=9
Plot(x,y)
FOR ctr=0 to 300 DO OD
color=0
Plot(x,y)
FOR ctr=0 to 300 DO OD
RETURN
PROC bounce()
BYTE fate=53770,L=[0],PA,PB,G,
kolor=[1],time=[32]
color=9
A=1
B=1
Plot(x,y)
DO
IF key=33 THEN key=255 RETURN FI
WHILE Locate(x+A,y+B)<15
DO
color=kolor
Plot(x,y)
x==+A
y==+B
wallchex()
color=9
Plot(x,y)
L==+1
FOR ctr=0 to 5*time DO OD
OD
IF key=7 THEN
key=255
time==-32
FI
Sound(0,L*4+20,10,8)
PA=Locate(x+A,y)
PB=Locate(x,y+B)
FOR ctr=0 to 100 DO OD
SndRst()
L=0
IF PA>2 AND PB>2 THEN
A=-A
B=-B
ELSEIF PA>2 AND PB<3 THEN
A=-A
color=2
Plot(x,y)
y=y+B
color=9
Plot(x,y)
ELSEIF PB>2 AND PA<3 THEN
B=-B
color=2
Plot(x,y)
x=x+A
color=9
Plot (x,y)
ELSEIF fate>127 THEN
B=-B
ELSE A=-A
FI
kolor==+1
IF kolor>14 THEN
kolor=1
FI
attract=0
OD
RETURN
PROC draw()
BYTE qq
drawscreen()
x=40
y=95
DO
IF key=28 THEN
key=255
drawscreen()
ELSEIF key=33 THEN
key=255
bounce()
FI
IF Stick(0)=15 THEN
flash()
ELSEIF Stick(0)=7 THEN
x=x+1
ELSEIF Stick(0)=6 THEN
x=x+1
y=y-1
ELSEIF Stick(0)=14 THEN
y=y-1
ELSEIF Stick(0)=5 THEN
x=x+1
y=y+1
ELSEIF Stick(0)=11 THEN
x=x-1
ELSEIF Stick(0)=10 THEN
x=x-1
y=y-1
ELSEIF Stick(0)=13 THEN
y=y+1
ELSEIF Stick(0)=9 THEN
x=x-1
y=y+1
FI
wallchex()
IF Strig(0)=0 THEN
color=0
flash()
ELSE
color=15
FI
Plot(x,y)
IF Stick(0)<>15 THEN
qq=Strig(0)
Sound(0,(200-x-y)*qq,8+2*qq,4)
FOR ctr=0 to 1000 DO OD
SndRst()
FI
OD
RETURN
}}}
----
[bounce in ACTION/bounceinaction.PDF]
[bounce in ACTION/bounceinaction.djvu]
This page (revision-6) was last changed on 03-Feb-2023 15:21 by Gromit  Top