Pong

[Raspberrypi]

Code: Select all

playerScore = 0 ! comScore = 0 ! startSpeed = 0.1
SPRITE 0 LOAD "Paddle@2x.png" ! SPRITE 0 SHOW
SPRITE 1 LOAD "Paddle@2x.png" ! SPRITE 1 SHOW
SPRITE 2 LOAD "white_box.png" ! SPRITE 2 SHOW
init:
GRAPHICS 
REFRESH
GRAPHICS CLEAR 0, 0.4, 0
OPTION SPRITE POS CENTRAL
OPTION ANGLE DEGREES
RANDOMIZE
DRAW FONT NAME "AppleColorEmoji"
DRAW FONT SIZE 50
DRAW TEXT playerScore AT SCREEN_WIDTH()/4, 100
DRAW TEXT comScore AT SCREEN_WIDTH()/1.5, 100
FOR y = 0 TO SCREEN_HEIGHT() STEP 40
FILL RECT SCREEN_WIDTH()/2, y SIZE 2, 5
NEXT y
player_x = 100 ! player_y = SCREEN_HEIGHT()/2
com_x = SCREEN_WIDTH() - 100 ! com_y = SCREEN_HEIGHT()/2
ball_x = SCREEN_WIDTH()/2 ! ball_y = SCREEN_HEIGHT()/2
ballSpeed_x = 0 ! ballSpeed_y = 0 ! 
IF startSpeed < 0.5 THEN
startSpeed+= 0.05
ENDIF
DIM touches(3) ! game = 0

DEF constrain(v, x, y)
var = v
IF var < x THEN
var = x
ENDIF
IF var > y THEN
var = y
ENDIF
RETURN var
ENDDEF

DEF range(var, x, y)
bool = 0
IF var >= x THEN
IF var < y THEN
bool = 1
ENDIF
ENDIF
RETURN bool
ENDDEF

DEF hitPaddle(x, y)
IF range(.ball_x, x - 15, x + 15) = 1 THEN
IF range(.ball_y, y - 64, y + 64) = 1 THEN
.ballSpeed_x *= -1
.ballSpeed_y = (.ball_y - y) / 300
ENDIF
ENDIF
ENDDEF

1 SPRITE 0 AT player_x, player_y SCALE 2, 0.5 ANGLE 90
SPRITE 1 AT com_x, com_y SCALE 2, 0.5 ANGLE 90
SPRITE 2 AT ball_X, ball_y SCALE 0.5
touches(0) = touches(1)
touches(1) = touches(2)
GET TOUCH 0 AS x, y
touches(2) = y
delta = touches(2) - touches(1) 
IF touches(1) > 0 AND touches(2) > 0 THEN 
player_y += delta
ENDIF
IF ball_y < com_y - 40 THEN ! com_y -= startSpeed / 3 ! ENDIF
IF ball_y > com_y + 40 THEN ! com_y += startSpeed / 3 ! ENDIF
IF game = 0 THEN 
IF y <> -1 THEN 
game = 1 
IF RND(2) = 0 THEN
ballSpeed_x = -startSpeed 
ELSE
ballSpeed_x = startSpeed
ENDIF
ENDIF
ENDIF
player_y = constrain(player_y, 50, SCREEN_HEIGHT() - 50)
com_y = constrain(com_y, 50, SCREEN_HEIGHT() - 50)
IF game = 1 THEN
ball_x += ballSpeed_x
ball_y += ballSpeed_y
ENDIF
CALL hitPaddle(player_x, player_y) ! CALL hitPaddle(com_x, com_y)
IF ball_y < 10 OR ball_y > SCREEN_HEIGHT() - 10 THEN
ballSpeed_y *= -1
ENDIF
IF ball_x < -10 THEN
comScore +=1 
GOTO init
ENDIF
IF ball_x > SCREEN_WIDTH() + 10 THEN
playerScore +=1
GOTO init
ENDIF
GOTO 1

[rbytes]

This should be fun. But it won't run without the graphic images - the paddle and the white box. I hope you will post them.

[Dutchman]

I think that the code is copied from https://books.google.nl/books?id=o2X0ui ... ng&f=false
But where are the images

[rbytes]

It has been almost a month since I asked Raspberrypi to post them. I think we will have to supply them ourselves.

You are good with game graphics. We just need a paddle and a ball

[Dutchman]

I have stolen my graphics from internet, that's why they look so good.
I will try to make 'Pong' complete. It remembers me of long ago.

[rbytes]

Same here. I started with a Commodore Vic 20, moved to a C64, then an Atari ST and then a couple of Amiga computers. Even today I marvel at what the professional Amiga artists could create with fewer, larger pixels and a fraction of the colors we have now.

Here is a self-portrait by Jim Sachs - one of the best of that elite group.

[Dutchman]

I have brought Pong to life:
https://www.dropbox.com/sh/ntucli2k8nql ... Ev_2a?dl=0
With 'large' ball it was easy to win, with smaller ball it will need some training.
Who will add sound?

won with large ball.PNG (84.39 KiB) Viewed 3740 times

tie played with small ball.PNG (82.67 KiB) Viewed 3740 times

[Dutchman]

I have improved the structure of pong and adapted for use with 'Launcher'
See viewtopic.php?f=20&t=1499
There is still no sound. Who cares?

new Pong during run.PNG (16.51 KiB) Viewed 3735 times

[rbytes]

Looks like fun! I will see if I can find some good sound effects.

[Dutchman]

I corrected an error if the program was started with the device in vertical position.
Furthermore the launcher will be called conditionally.
The variable 'Launcher' at the beginning of the program sets the condition.