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ported tehtriz to Cx16

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Irmen de Jong 2021-02-10 21:44:35 +01:00
parent 7c09ac632c
commit 9867dfcdeb
2 changed files with 645 additions and 9 deletions
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examples/cx16/tehtriz.p8 Normal file
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@ -0,0 +1,642 @@
; TehTriz - a Tetris clone. Commander X16 version.
;
; features:
; holding area
; wall kick rotations
; shows next piece
; staged speed increase
; TODO: replicate the simple sound effects from the C64 version
%target cx16
%import syslib
%import textio
%import test_stack
main {
const ubyte boardOffsetX = 14
const ubyte boardOffsetY = 3
const ubyte boardWidth = 10
const ubyte boardHeight = 20
const ubyte startXpos = boardOffsetX + 3
const ubyte startYpos = boardOffsetY - 2
uword lines
uword score
ubyte xpos
ubyte ypos
ubyte nextBlock
ubyte speedlevel
ubyte holding
ubyte holdingAllowed
sub start() {
cx16.screen_set_mode(0) ; low res
sound.init()
newGame()
drawBoard()
gameOver()
newgame:
newGame()
drawBoard()
spawnNextBlock()
waitkey:
ubyte time_lo = lsb(c64.RDTIM16())
if time_lo>=(60-4*speedlevel) {
c64.SETTIM(0,0,0)
drawBlock(xpos, ypos, 32) ; hide block
if blocklogic.noCollision(xpos, ypos+1) {
; slowly move the block down
ypos++
drawBlock(xpos, ypos, 160) ; show block on new position
} else {
; block can't move further down!
; check if the game area is full, if not, spawn the next block at the top.
if blocklogic.isGameOver(xpos, ypos) {
gameOver()
goto newgame
} else {
sound.blockrotate()
checkForLines()
spawnNextBlock()
score++
}
}
drawScore()
; txt.plot(0,0)
; test_stack.test()
}
ubyte key=c64.GETIN()
if key==0 goto waitkey
keypress(key)
goto waitkey
}
sub move_left() {
drawBlock(xpos, ypos, 32)
if blocklogic.noCollision(xpos-1, ypos) {
xpos--
}
drawBlock(xpos, ypos, 160)
}
sub move_right() {
drawBlock(xpos, ypos, 32)
if blocklogic.noCollision(xpos+1, ypos) {
xpos++
}
drawBlock(xpos, ypos, 160)
}
sub move_down_faster() {
drawBlock(xpos, ypos, 32)
if blocklogic.noCollision(xpos, ypos+1) {
ypos++
}
drawBlock(xpos, ypos, 160)
}
sub drop_down_immediately() {
drawBlock(xpos, ypos, 32)
ubyte dropypos
for dropypos in ypos+1 to boardOffsetY+boardHeight-1 {
if not blocklogic.noCollision(xpos, dropypos) {
dropypos-- ; the furthest down that still fits
break
}
}
if dropypos>ypos {
ypos = dropypos
sound.blockdrop()
drawBlock(xpos, ypos, 160)
checkForLines()
spawnNextBlock()
score++
drawScore()
}
}
sub keypress(ubyte key) {
when key {
157, ',' -> move_left()
29, '/' -> move_right()
17, '.' -> move_down_faster()
145, ' ' -> drop_down_immediately()
'z' -> {
; no joystick equivalent (there is only 1 fire button)
; rotate counter clockwise
drawBlock(xpos, ypos, 32)
if blocklogic.canRotateCCW(xpos, ypos) {
blocklogic.rotateCCW()
sound.blockrotate()
}
else if blocklogic.canRotateCCW(xpos-1, ypos) {
xpos--
blocklogic.rotateCCW()
sound.blockrotate()
}
else if blocklogic.canRotateCCW(xpos+1, ypos) {
xpos++
blocklogic.rotateCCW()
sound.blockrotate()
}
drawBlock(xpos, ypos, 160)
}
'x' -> {
; rotate clockwise
drawBlock(xpos, ypos, 32)
if blocklogic.canRotateCW(xpos, ypos) {
blocklogic.rotateCW()
sound.blockrotate()
}
else if blocklogic.canRotateCW(xpos-1, ypos) {
xpos--
blocklogic.rotateCW()
sound.blockrotate()
}
else if blocklogic.canRotateCW(xpos+1, ypos) {
xpos++
blocklogic.rotateCW()
sound.blockrotate()
}
drawBlock(xpos, ypos, 160)
}
'c' -> {
; hold
if holdingAllowed {
sound.swapping()
if holding<7 {
drawBlock(xpos, ypos, 32)
ubyte newholding = blocklogic.currentBlockNum
swapBlock(holding)
holding = newholding
holdingAllowed = false
} else {
holding = blocklogic.currentBlockNum
drawBlock(xpos, ypos, 32)
spawnNextBlock()
}
drawHoldBlock()
}
}
}
}
sub checkForLines() {
; check if line(s) are full -> flash/clear line(s) + add score + move rest down
ubyte[boardHeight] complete_lines
ubyte num_lines=0
ubyte linepos
sys.memset(complete_lines, len(complete_lines), 0)
for linepos in boardOffsetY to boardOffsetY+boardHeight-1 {
if blocklogic.isLineFull(linepos) {
complete_lines[num_lines]=linepos
num_lines++
ubyte x
for x in boardOffsetX to boardOffsetX+boardWidth-1
txt.setcc(x, linepos, 160, 1)
}
}
if num_lines {
if num_lines>3
sound.lineclear_big()
else
sound.lineclear()
sys.wait(20) ; slight delay to flash the line
for linepos in complete_lines
if linepos and blocklogic.isLineFull(linepos)
blocklogic.collapse(linepos)
lines += num_lines
uword[] scores = [10, 25, 50, 100] ; can never clear more than 4 lines at once
score += scores[num_lines-1]
speedlevel = 1+lsb(lines/10)
drawScore()
}
}
sub gameOver() {
sound.gameover()
txt.plot(7, 7)
c64.CHROUT('U')
txt.print("────────────────────────")
c64.CHROUT('I')
txt.plot(7, 8)
txt.print("│*** g a m e o v e r ***│")
txt.plot(7, 9)
c64.CHROUT('J')
txt.print("────────────────────────")
c64.CHROUT('K')
txt.plot(7, 18)
c64.CHROUT('U')
txt.print("────────────────────────")
c64.CHROUT('I')
txt.plot(7, 19)
txt.print("│ f1 for new game │")
txt.plot(7, 20)
c64.CHROUT('J')
txt.print("────────────────────────")
c64.CHROUT('K')
ubyte key = 0
while key!=133 {
; endless loop until user presses F1 to restart the game
key = c64.GETIN()
}
}
sub newGame() {
lines = 0
score = 0
xpos = startXpos
ypos = startYpos
speedlevel = 1
nextBlock = rnd() % 7
holding = 255
holdingAllowed = true
}
sub swapBlock(ubyte newblock) {
blocklogic.newCurrentBlock(newblock)
xpos = startXpos
ypos = startYpos
drawBlock(xpos, ypos, 160)
}
sub spawnNextBlock() {
swapBlock(nextBlock)
nextBlock = (rnd() + lsb(c64.RDTIM16())) % 7
drawNextBlock()
holdingAllowed = true
}
sub drawBoard() {
txt.clear_screen()
txt.color(7)
txt.plot(1,1)
txt.print("* tehtriz *")
txt.color(5)
txt.plot(6,4)
txt.print("hold:")
txt.plot(2,22)
txt.print("speed: ")
txt.plot(28,3)
txt.print("next:")
txt.plot(28,10)
txt.print("lines:")
txt.plot(28,14)
txt.print("score:")
txt.color(12)
txt.plot(27,18)
txt.print("controls:")
txt.color(11)
txt.plot(28,19)
txt.print(",/ move")
txt.plot(28,20)
txt.print("zx rotate")
txt.plot(29,21)
txt.print(". descend")
txt.plot(27,22)
txt.print("spc drop")
txt.plot(29,23)
txt.print("c hold")
txt.setcc(boardOffsetX-1, boardOffsetY-2, 255, 0) ; invisible barrier
txt.setcc(boardOffsetX-1, boardOffsetY-3, 255, 0) ; invisible barrier
txt.setcc(boardOffsetX+boardWidth, boardOffsetY-2, 255, 0) ; invisible barrier
txt.setcc(boardOffsetX+boardWidth, boardOffsetY-3, 255, 0) ; invisible barrier
txt.setcc(boardOffsetX-1, boardOffsetY-1, 108, 12)
txt.setcc(boardOffsetX+boardWidth, boardOffsetY-1, 123, 12)
txt.setcc(boardOffsetX+boardWidth, boardOffsetY-1, 123, 12)
txt.setcc(boardOffsetX-1, boardOffsetY+boardHeight, 124, 12)
txt.setcc(boardOffsetX+boardWidth, boardOffsetY+boardHeight, 126, 12)
ubyte i
for i in boardOffsetX+boardWidth-1 downto boardOffsetX {
txt.setcc(i, boardOffsetY-3, 255, 0) ; invisible barrier
txt.setcc(i, boardOffsetY+boardHeight, 69, 11)
}
for i in boardOffsetY+boardHeight-1 downto boardOffsetY {
txt.setcc(boardOffsetX-1, i, 89, 11)
txt.setcc(boardOffsetX+boardWidth, i, 84, 11)
}
ubyte[] colors = [6,8,7,5,4]
for i in len(colors)-1 downto 0 {
ubyte x
for x in 5 downto 0 {
txt.setcc(6+x-i, 11+2*i, 102, colors[i])
}
}
drawScore()
}
sub drawScore() {
txt.color(1)
txt.plot(30,11)
txt.print_uw(lines)
txt.plot(30,15)
txt.print_uw(score)
txt.plot(9,22)
txt.print_ub(speedlevel)
}
sub drawNextBlock() {
const ubyte nextBlockXpos = 29
const ubyte nextBlockYpos = 5
ubyte x
for x in nextBlockXpos+3 downto nextBlockXpos {
txt.setcc(x, nextBlockYpos, ' ', 0)
txt.setcc(x, nextBlockYpos+1, ' ', 0)
}
; reuse the normal block draw routine (because we can't manipulate array pointers yet)
ubyte prev = blocklogic.currentBlockNum
blocklogic.newCurrentBlock(nextBlock)
drawBlock(nextBlockXpos, nextBlockYpos, 160)
blocklogic.newCurrentBlock(prev)
}
sub drawHoldBlock() {
const ubyte holdBlockXpos = 7
const ubyte holdBlockYpos = 6
ubyte x
for x in holdBlockXpos+3 downto holdBlockXpos {
txt.setcc(x, holdBlockYpos, '@', 0)
txt.setcc(x, holdBlockYpos+1, '@', 0)
}
if holding < 7 {
; reuse the normal block draw routine (because we can't manipulate array pointers yet)
ubyte prev = blocklogic.currentBlockNum
blocklogic.newCurrentBlock(holding)
drawBlock(holdBlockXpos, holdBlockYpos, 160)
blocklogic.newCurrentBlock(prev)
}
}
sub drawBlock(ubyte x, ubyte y, ubyte character) {
ubyte @zp i
for i in 15 downto 0 {
ubyte @zp c=blocklogic.currentBlock[i]
if c
txt.setcc((i&3)+x, (i/4)+y, character, c)
}
}
}
blocklogic {
ubyte currentBlockNum
ubyte[16] currentBlock
ubyte[16] rotated
; the 7 tetrominos
ubyte[] blockI = [0,0,0,0, ; cyan ; note: special rotation (around matrix center)
3,3,3,3,
0,0,0,0,
0,0,0,0]
ubyte[] blockJ = [6,0,0,0, ; blue
6,6,6,0,
0,0,0,0,
0,0,0,0]
ubyte[] blockL = [0,0,8,0, ; orange
8,8,8,0,
0,0,0,0,
0,0,0,0]
ubyte[] blockO = [0,7,7,0, ; yellow ; note: no rotation (square)
0,7,7,0,
0,0,0,0,
0,0,0,0]
ubyte[] blockS = [0,5,5,0, ; green
5,5,0,0,
0,0,0,0,
0,0,0,0]
ubyte[] blockT = [0,4,0,0, ; purple
4,4,4,0,
0,0,0,0,
0,0,0,0]
ubyte[] blockZ = [2,2,0,0, ; red
0,2,2,0,
0,0,0,0,
0,0,0,0]
uword[] blocks = [&blockI, &blockJ, &blockL, &blockO, &blockS, &blockT, &blockZ]
sub newCurrentBlock(ubyte block) {
currentBlockNum = block
sys.memcopy(blocks[block], currentBlock, len(currentBlock))
}
sub rotateCW() {
; rotates the current block clockwise.
if currentBlockNum==0 {
; the 'I' block rotates a 4x4 matrix around the center
rotated[0] = currentBlock[12]
rotated[1] = currentBlock[8]
rotated[2] = currentBlock[4]
rotated[3] = currentBlock[0]
rotated[4] = currentBlock[13]
rotated[5] = currentBlock[9]
rotated[6] = currentBlock[5]
rotated[7] = currentBlock[1]
rotated[8] = currentBlock[14]
rotated[9] = currentBlock[10]
rotated[10] = currentBlock[6]
rotated[11] = currentBlock[2]
rotated[12] = currentBlock[15]
rotated[13] = currentBlock[11]
rotated[14] = currentBlock[7]
rotated[15] = currentBlock[3]
sys.memcopy(rotated, currentBlock, len(currentBlock))
}
else if currentBlockNum!=3 {
; rotate all blocks (except 3, the square) around their center square in a 3x3 matrix
sys.memset(rotated, len(rotated), 0)
rotated[0] = currentBlock[8]
rotated[1] = currentBlock[4]
rotated[2] = currentBlock[0]
rotated[4] = currentBlock[9]
rotated[5] = currentBlock[5]
rotated[6] = currentBlock[1]
rotated[8] = currentBlock[10]
rotated[9] = currentBlock[6]
rotated[10] = currentBlock[2]
sys.memcopy(rotated, currentBlock, len(currentBlock))
}
}
sub rotateCCW() {
; rotates the current block counterclockwise.
if currentBlockNum==0 {
; the 'I' block rotates a 4x4 matrix around the center
rotated[0] = currentBlock[3]
rotated[1] = currentBlock[7]
rotated[2] = currentBlock[11]
rotated[3] = currentBlock[15]
rotated[4] = currentBlock[2]
rotated[5] = currentBlock[6]
rotated[6] = currentBlock[10]
rotated[7] = currentBlock[14]
rotated[8] = currentBlock[1]
rotated[9] = currentBlock[5]
rotated[10] = currentBlock[9]
rotated[11] = currentBlock[13]
rotated[12] = currentBlock[0]
rotated[13] = currentBlock[4]
rotated[14] = currentBlock[8]
rotated[15] = currentBlock[12]
sys.memcopy(rotated, currentBlock, len(currentBlock))
}
else if currentBlockNum!=3 {
; rotate all blocks (except 3, the square) around their center square in a 3x3 matrix
sys.memset(rotated, len(rotated), 0)
rotated[0] = currentBlock[2]
rotated[1] = currentBlock[6]
rotated[2] = currentBlock[10]
rotated[4] = currentBlock[1]
rotated[5] = currentBlock[5]
rotated[6] = currentBlock[9]
rotated[8] = currentBlock[0]
rotated[9] = currentBlock[4]
rotated[10] = currentBlock[8]
sys.memcopy(rotated, currentBlock, len(currentBlock))
}
}
; For movement checking it is not needed to clamp the x/y coordinates,
; because we have to check for brick collisions anyway.
; The full play area is bordered by (in)visible characters that will collide.
; Collision is determined by reading the screen data directly.
sub canRotateCW(ubyte xpos, ubyte ypos) -> ubyte {
rotateCW()
ubyte nocollision = noCollision(xpos, ypos)
rotateCCW()
return nocollision
}
sub canRotateCCW(ubyte xpos, ubyte ypos) -> ubyte {
rotateCCW()
ubyte nocollision = noCollision(xpos, ypos)
rotateCW()
return nocollision
}
sub noCollision(ubyte xpos, ubyte ypos) -> ubyte {
ubyte @zp i
for i in 15 downto 0 {
if currentBlock[i] and txt.getchr(xpos + (i&3), ypos+i/4)!=32
return false
}
return true
}
sub isGameOver(ubyte xpos, ubyte ypos) -> ubyte {
main.drawBlock(xpos, ypos, 32)
ubyte result = ypos==main.startYpos and not noCollision(xpos, ypos+1)
main.drawBlock(xpos, ypos, 160)
return result
}
sub isLineFull(ubyte ypos) -> ubyte {
ubyte x
for x in main.boardOffsetX to main.boardOffsetX+main.boardWidth-1 {
if txt.getchr(x, ypos)==32
return false
}
return true
}
sub collapse(ubyte ypos) {
while ypos>main.startYpos+1 {
ubyte x
for x in main.boardOffsetX+main.boardWidth-1 downto main.boardOffsetX {
ubyte char = txt.getchr(x, ypos-1)
ubyte color = txt.getclr(x, ypos-1)
txt.setcc(x, ypos, char, color)
}
ypos--
}
}
}
sound {
; TODO stubs for now
sub init() {
; c64.MVOL = 15
}
sub blockrotate() {
; soft click
; c64.MVOL = 5
; c64.AD1 = %00100010
; c64.SR1 = %00000000
; c64.FREQ1 = 15600
; c64.CR1 = %10000000
; c64.CR1 = %10000001
}
sub blockdrop() {
; swish
; c64.MVOL = 5
; c64.AD1 = %01010111
; c64.SR1 = %00000000
; c64.FREQ1 = 4600
; c64.CR1 = %10000000
; c64.CR1 = %10000001
}
sub swapping() {
; beep
; c64.MVOL = 8
; c64.AD1 = %01010111
; c64.SR1 = %00000000
; c64.FREQ1 = 5500
; c64.CR1 = %00010000
; c64.CR1 = %00010001
}
sub lineclear() {
; explosion
; c64.MVOL = 15
; c64.AD1 = %01100110
; c64.SR1 = %00000000
; c64.FREQ1 = 1600
; c64.CR1 = %10000000
; c64.CR1 = %10000001
}
sub lineclear_big() {
; big explosion
; c64.MVOL = 15
; c64.AD1 = %01101010
; c64.SR1 = %00000000
; c64.FREQ1 = 2600
; c64.CR1 = %10000000
; c64.CR1 = %10000001
}
sub gameover() {
; buzz
; c64.MVOL = 15
; c64.FREQ2 = 600
; c64.AD2 = %00111010
; c64.SR2 = %00000000
; c64.CR2 = %00110000
; c64.CR2 = %00110001
}
}

12
examples/tehtriz.p8
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@ -214,11 +214,7 @@ waitkey:
sound.lineclear_big() sound.lineclear_big()
else else
sound.lineclear() sound.lineclear()
c64.TIME_LO=0 sys.wait(20) ; slight delay to flash the line
while c64.TIME_LO<20 {
; slight delay to flash the line
}
c64.TIME_LO=0
for linepos in complete_lines for linepos in complete_lines
if linepos and blocklogic.isLineFull(linepos) if linepos and blocklogic.isLineFull(linepos)
blocklogic.collapse(linepos) blocklogic.collapse(linepos)
@ -288,12 +284,10 @@ waitkey:
} }
sub drawBoard() { sub drawBoard() {
c64.CLEARSCR() txt.clear_screen()
txt.color(7) txt.color(7)
txt.plot(1,1) txt.plot(1,1)
txt.print("irmen's") txt.print("* tehtriz *")
txt.plot(2,2)
txt.print("teh▁triz")
txt.color(5) txt.color(5)
txt.plot(6,4) txt.plot(6,4)
txt.print("hold:") txt.print("hold:")