0
rem Open Source Pong rem an Open Source Pong Remake rem Updated: March 31, 2008 rem Website: http://opensourcepong.freepgs.com rem setup all the game variables rem set the rom size set romsize 2k rem turn on smartbranching set smartbranching on rem define the number of player scores const playerscores = 2 rem define noscores constant const noscore = 1 rem set kernel options rem readpaddle - set it so the paddle controlers are read set kernel_options no_blank_lines readpaddle rem set an alias for the ball's x velocity dim ballxvelocity = a rem set an alias for the ball's y velocity dim ballyvelocity = b rem set an alias for troggling the 2 player mode dim playervsplayer = c rem set an alias to determine if sound effects rem should be playing dim soundplaying = d rem set an alias to keep track of how many frames the rem sound effects have played dim soundtimer = e rem color the background green COLUBK = 198 rem set the color of the playfield to white COLUPF = 14 rem set player 2's score color to his sprite color player0scorecolor = $1C rem set player 1's score color to his sprite color player1scorecolor = $8C rem clear the playfield pfclear rem draw the top border of the playfield pfhline 0 0 31 on rem draw the bottom border of the playfield pfhline 0 10 31 on rem bla rem define player 1's sprite player0: %00011000 %00011000 %00011000 %00011000 %00011000 %00011000 %00011000 %00011000 end rem define player 2's sprite player1: %00011000 %00011000 %00011000 %00011000 %00011000 %00011000 %00011000 %00011000 end rem finished seting up the game variables rem start a new game and reset everything that was changed during rem the course of the game startNewGame rem set player 1's inital x positon player0x = 140 rem set player 1's inital y positon player0y = 45 rem if the left switch is set to B, paddle 1 controls the rem computers paddle, otherwise paddle controller 2 controlls rem it if !switchleftb then playervsplayer = 1 else playervsplayer = 0 rem set player2's inital x positon player1x = 15 rem set player2's inital y positon player1y = 45 rem set ball's inital x positon ballx = 80 rem set ball's inital y positon bally = 45 rem set the ball's initial x velocity ballxvelocity = 1 rem set the ball's initial x velocity ballyvelocity = 1 rem reset player 1's score player0score = $00 rem reset player 1's score player1score = $00 rem reset the sound playing boolean to 0 soundplaying = 0 rem reset the sound effects timer soundtimer = 0 rem turn off all sound effects from the previous game AUDV0 = 0 rem set the Audio Control for Channel 0 to a pure tone AUDC0 = 12 rem finished reseting all the game variables changed during rem the course of the game rem start of the game loop gameLoop rem if the user presses the reset switch, start a new game if switchreset then startNewGame rem if the colorswitch is in the black/white position pause rem the game pauseloop if switchbw then COLUP0 = 140 : COLUP1 = 28 : drawscreen : goto pauseloop rem color player 1's paddle COLUP0 = 140 rem color player 2's paddle COLUP1 = 28 rem read paddle 0, use it to position player 1 across the screen currentpaddle = 0 rem draw the game screen drawscreen rem set player1's y position to the paddle control's axis rem plus 8 player0y = paddle + 8 rem make sure player 1 doesn't go off the top screen if player0y < 16 then player0y = 16 rem make sure player 1 doesn't go off the bottom screen if player0y > 79 then player0y = 79 rem if the 2 player mode is activated then paddle 1 controls the rem second paddle rem color player 1's paddle rem color player 2's paddle rem read paddle 1, use it to position player 2's paddle across the screen rem draw the game screen rem set player 2's y position to the paddle 2's control's axis rem plus 8 rem otherwise set player 2's y position to the balls y position if playervsplayer = 1 then COLUP0 = 140 : COLUP1 = 28 : currentpaddle = 1 : drawscreen : player1y = paddle + 8 else player1y = bally + 1 rem make sure player 2 doesn't go off the top screen if player1y < 16 then player1y = 16 rem make sure player 2 doesn't go off the bottom screen if player1y > 79 then player1y = 79 rem move the ball ballx = ballx + ballxvelocity bally = bally + ballyvelocity rem make sure the ball doesn't go off the top screen if bally < 9 then ballyvelocity = 0 - ballyvelocity rem make sure the ball doesn't go off the bottom screen if bally > 77 then ballyvelocity = 0 - ballyvelocity rem if the ball collides with player 1's paddle rem play the pure tone with a frequency of 4 and volume of 10 rem move the ball a bit so it doesn't stick rem and reverse its x velocity if collision(player0, ball) then soundplaying = 1 : AUDF0 = 4 : AUDV0 = 10 : ballx = ballx - 3 : ballxvelocity = 0 - ballxvelocity rem if the ball collides with player 2's paddle rem play the pure tone with a frequency of 5 and volume of 10 rem move the ball a bit so it doesn't stick rem and reverse its x velocity if collision(player1, ball) then soundplaying = 1 : AUDF0 = 5 : AUDV0 = 10 : ballx = ballx + 3 : ballxvelocity = 0 - ballxvelocity rem if the a effect is playing update the sound timer if soundplaying = 1 then soundtimer = soundtimer + 1 rem if the sound effect timer is 60 frames, stop the sound effect if soundtimer = 60 then soundplaying = 0 : soundtimer = 0 : AUDV0 = 0 rem if the ball goes past player 1's paddle rem increase player 2's score by 1 rem have the player serve the ball rem reverse the balls x velocity if ballx > 160 then player0score = addbcd(player0score,1) : ballx = player0x - 3 : bally = player0y - 5 : ballxvelocity = 0 - ballxvelocity rem if the ball goes past the computer paddle rem increase player 1's score by 1 rem have the computer serve the ball rem reverse the balls x velocity if ballx < 1 then player1score = addbcd(player1score,1) : ballx = player1x + 3 : bally = player1y - 5 : ballxvelocity = 0 - ballxvelocity rem if player 1 scores 11 points then its game if player0score > $10 then goto gameover rem if player 2 scores 11 points then its game if player1score > $10 then goto gameover goto gameLoop rem end of the game loop code, restart the game loop rem code for handling when either players score reaches 11 rem and its gameover gameover rem if the user presses the reset switch, start a new game if switchreset then startNewGame rem color player 1's paddle COLUP0 = 140 rem color player 2's paddle COLUP1 = 28 rem draw the screen drawscreen rem if the user presses the fire button, start a new game if joy0left then startNewGame rem otherwise just keep looping goto gameover rem inline bcd math helper inline bcd_math.asm rem inline for player scores multikernel inline playerscores.asm
Sincerely,
Open Source Pong
