mirror of
https://github.com/irmen/prog8.git
synced 2024-05-31 15:41:34 +00:00
733 lines
22 KiB
Lua
733 lines
22 KiB
Lua
; TehTriz - a Tetris clone. Commander X16 version.
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;
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; features:
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; holding area
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; wall kick rotations
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; shows next piece
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; staged speed increase
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; simple sound effects (Vera PSG)
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%import syslib
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%import textio
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%import math
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%import test_stack
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%import psg
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main {
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const ubyte boardOffsetX = 14
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const ubyte boardOffsetY = 3
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const ubyte boardWidth = 10
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const ubyte boardHeight = 20
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const ubyte startXpos = boardOffsetX + 3
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const ubyte startYpos = boardOffsetY - 2
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uword lines
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uword score
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ubyte xpos
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ubyte ypos
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ubyte nextBlock
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ubyte speedlevel
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ubyte holding
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bool holdingAllowed
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ubyte ticks_since_previous_action
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ubyte ticks_since_previous_move
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sub start() {
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void cx16.screen_mode(3, false) ; low res
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txt.color2(7,0) ; make sure correct screen colors are (re)set
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txt.clear_screen()
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; gimmick: make a mirrored R
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cx16.vpoke(1,$f000+sc:'r'*8+0, %00111110)
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cx16.vpoke(1,$f000+sc:'r'*8+1, %01100110)
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cx16.vpoke(1,$f000+sc:'r'*8+2, %01100110)
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cx16.vpoke(1,$f000+sc:'r'*8+3, %00111110)
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cx16.vpoke(1,$f000+sc:'r'*8+4, %00011110)
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cx16.vpoke(1,$f000+sc:'r'*8+5, %00110110)
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cx16.vpoke(1,$f000+sc:'r'*8+6, %01100110)
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cx16.vpoke(1,$f000+sc:'r'*8+7, %00000000)
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sound.init()
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newGame()
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drawBoard()
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gameOver()
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newgame:
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newGame()
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drawBoard()
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spawnNextBlock()
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waitkey:
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sys.waitvsync()
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ticks_since_previous_action++
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ticks_since_previous_move++
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if ticks_since_previous_action==0
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ticks_since_previous_action=255
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if ticks_since_previous_move==0
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ticks_since_previous_move=255
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ubyte time_lo = lsb(cbm.RDTIM16())
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if time_lo>=(60-4*speedlevel) {
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cbm.SETTIM(0,0,0)
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drawBlock(xpos, ypos, true) ; hide block
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if blocklogic.noCollision(xpos, ypos+1) {
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; slowly move the block down
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ypos++
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drawBlock(xpos, ypos, false) ; show block on new position
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} else {
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; block can't move further down!
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; check if the game area is full, if not, spawn the next block at the top.
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if blocklogic.isGameOver(xpos, ypos) {
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gameOver()
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goto newgame
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} else {
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sound.blockrotate()
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checkForLines()
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spawnNextBlock()
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score++
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}
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}
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drawScore()
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; txt.plot(0,0)
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; test_stack.test()
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}
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ubyte key
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void, key=cbm.GETIN()
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keypress(key)
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cx16.r0,void = cx16.joystick_get(1)
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joystick(cx16.r0)
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goto waitkey
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}
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sub move_left() {
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drawBlock(xpos, ypos, true)
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if blocklogic.noCollision(xpos-1, ypos) {
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xpos--
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}
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drawBlock(xpos, ypos, false)
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}
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sub move_right() {
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drawBlock(xpos, ypos, true)
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if blocklogic.noCollision(xpos+1, ypos) {
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xpos++
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}
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drawBlock(xpos, ypos, false)
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}
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sub move_down_faster() {
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drawBlock(xpos, ypos, true)
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if blocklogic.noCollision(xpos, ypos+1) {
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ypos++
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}
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drawBlock(xpos, ypos, false)
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}
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sub drop_down_immediately() {
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drawBlock(xpos, ypos, true)
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ubyte dropypos
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for dropypos in ypos+1 to boardOffsetY+boardHeight-1 {
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if not blocklogic.noCollision(xpos, dropypos) {
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dropypos-- ; the furthest down that still fits
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break
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}
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}
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if dropypos>ypos {
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ypos = dropypos
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sound.blockdrop()
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drawBlock(xpos, ypos, false)
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checkForLines()
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spawnNextBlock()
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score++
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drawScore()
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}
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}
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sub rotate_counterclockwise() {
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drawBlock(xpos, ypos, true)
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if blocklogic.canRotateCCW(xpos, ypos) {
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blocklogic.rotateCCW()
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sound.blockrotate()
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}
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else if blocklogic.canRotateCCW(xpos-1, ypos) {
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xpos--
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blocklogic.rotateCCW()
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sound.blockrotate()
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}
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else if blocklogic.canRotateCCW(xpos+1, ypos) {
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xpos++
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blocklogic.rotateCCW()
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sound.blockrotate()
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}
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drawBlock(xpos, ypos, false)
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}
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sub rotate_clockwise() {
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drawBlock(xpos, ypos, true)
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if blocklogic.canRotateCW(xpos, ypos) {
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blocklogic.rotateCW()
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sound.blockrotate()
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}
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else if blocklogic.canRotateCW(xpos-1, ypos) {
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xpos--
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blocklogic.rotateCW()
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sound.blockrotate()
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}
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else if blocklogic.canRotateCW(xpos+1, ypos) {
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xpos++
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blocklogic.rotateCW()
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sound.blockrotate()
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}
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drawBlock(xpos, ypos, false)
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}
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sub hold_block() {
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if holdingAllowed {
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sound.swapping()
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if holding<7 {
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drawBlock(xpos, ypos, true)
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ubyte newholding = blocklogic.currentBlockNum
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swapBlock(holding)
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holding = newholding
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holdingAllowed = false
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} else {
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holding = blocklogic.currentBlockNum
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drawBlock(xpos, ypos, true)
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spawnNextBlock()
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}
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drawHoldBlock()
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}
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}
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sub keypress(ubyte key) {
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when key {
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157, ',' -> move_left()
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29, '/' -> move_right()
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17, '.' -> move_down_faster()
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145, ' ' -> drop_down_immediately()
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'z' -> rotate_counterclockwise()
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'x' -> rotate_clockwise()
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'c' -> hold_block()
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}
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}
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sub joystick(uword joy) {
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; note: we don't process simultaneous button presses
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when joy {
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%1111111111111101 -> {
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if ticks_since_previous_move > 5 {
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move_left()
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ticks_since_previous_move = 0
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ticks_since_previous_action = 0
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}
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}
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%1111111111111110 -> {
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if ticks_since_previous_move > 5 {
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move_right()
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ticks_since_previous_move = 0
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ticks_since_previous_action = 0
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}
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}
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%1111111111111011 -> {
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if ticks_since_previous_move > 5 {
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move_down_faster()
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ticks_since_previous_move = 0
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ticks_since_previous_action = 0
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}
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}
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%1111111101111111 -> {
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if ticks_since_previous_action > 200 {
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drop_down_immediately()
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ticks_since_previous_action = 0
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}
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}
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%1111111110111111 -> {
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if ticks_since_previous_action > 20 {
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rotate_counterclockwise()
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ticks_since_previous_action = 0
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}
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}
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%1011111111111111, %0111111111111111 -> {
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if ticks_since_previous_action > 20 {
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rotate_clockwise()
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ticks_since_previous_action = 0
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}
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}
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%1111111111110111 -> {
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if ticks_since_previous_action > 60 {
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hold_block()
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ticks_since_previous_action = 0
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}
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}
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$ffff -> {
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; no button pressed, reset timers to allow button tapping
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ticks_since_previous_move = 255
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ticks_since_previous_action = 255
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}
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}
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}
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sub checkForLines() {
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; check if line(s) are full -> flash/clear line(s) + add score + move rest down
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ubyte[boardHeight] complete_lines
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ubyte num_lines=0
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ubyte linepos
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sys.memset(complete_lines, len(complete_lines), 0)
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for linepos in boardOffsetY to boardOffsetY+boardHeight-1 {
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if blocklogic.isLineFull(linepos) {
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complete_lines[num_lines]=linepos
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num_lines++
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ubyte x
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for x in boardOffsetX to boardOffsetX+boardWidth-1
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txt.setcc2(x, linepos, 160, 1)
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}
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}
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if num_lines!=0 {
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if num_lines>3 {
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sound.lineclear_big()
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sys.wait(25) ; slight delay to flash the line
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}
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else {
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sound.lineclear()
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sys.wait(15) ; slight delay to flash the line
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}
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for linepos in complete_lines
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if linepos!=0 and blocklogic.isLineFull(linepos)
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blocklogic.collapse(linepos)
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lines += num_lines
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uword[] scores = [10, 25, 50, 100] ; can never clear more than 4 lines at once
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score += scores[num_lines-1]
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speedlevel = 1+lsb(lines/10)
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drawScore()
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}
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}
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sub gameOver() {
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sound.gameover()
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txt.plot(7, 7)
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txt.chrout('U')
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txt.print("────────────────────────")
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txt.chrout('I')
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txt.plot(7, 8)
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txt.print("│*** g a m e o v e r ***│")
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txt.plot(7, 9)
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txt.chrout('J')
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txt.print("────────────────────────")
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txt.chrout('K')
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txt.plot(7, 18)
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txt.chrout('U')
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txt.print("────────────────────────")
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txt.chrout('I')
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txt.plot(7, 19)
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txt.print("│ f1/start for new game │")
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txt.plot(7, 20)
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txt.chrout('J')
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txt.print("────────────────────────")
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txt.chrout('K')
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ubyte key
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do {
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; endless loop until user presses F1 or Start button to restart the game
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cx16.r0, void = cx16.joystick_get(1)
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if cx16.r0 & %0000000000010000 == 0
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break
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void, key = cbm.GETIN()
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} until key==133
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}
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sub newGame() {
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lines = 0
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score = 0
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xpos = startXpos
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ypos = startYpos
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speedlevel = 1
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nextBlock = math.rnd() % 7
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holding = 255
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holdingAllowed = true
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ticks_since_previous_action = 0
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ticks_since_previous_move = 0
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}
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sub swapBlock(ubyte newblock) {
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blocklogic.newCurrentBlock(newblock)
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xpos = startXpos
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ypos = startYpos
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drawBlock(xpos, ypos, false)
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}
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sub spawnNextBlock() {
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swapBlock(nextBlock)
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nextBlock = (math.rnd() + lsb(cbm.RDTIM16())) % 7
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drawNextBlock()
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holdingAllowed = true
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}
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sub drawBoard() {
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txt.clear_screen()
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txt.color(7)
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txt.plot(1,1)
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txt.print("* tehtriz *")
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txt.color(5)
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txt.plot(6,4)
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txt.print("hold:")
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txt.plot(2,22)
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txt.print("speed: ")
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txt.plot(28,3)
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txt.print("next:")
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txt.plot(28,10)
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txt.print("lines:")
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txt.plot(28,14)
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txt.print("score:")
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txt.color(12)
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txt.plot(27,18)
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txt.print("controls:")
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txt.color(11)
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txt.plot(28,19)
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txt.print(",/ move")
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txt.plot(28,20)
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txt.print("zx rotate")
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txt.plot(29,21)
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txt.print(". descend")
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txt.plot(27,22)
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txt.print("spc drop")
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txt.plot(29,23)
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txt.print("c hold")
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txt.plot(25,24)
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txt.print("or joystick #1")
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txt.setcc(boardOffsetX-1, boardOffsetY-2, 255, 0) ; invisible barrier
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txt.setcc(boardOffsetX-1, boardOffsetY-3, 255, 0) ; invisible barrier
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txt.setcc(boardOffsetX+boardWidth, boardOffsetY-2, 255, 0) ; invisible barrier
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txt.setcc(boardOffsetX+boardWidth, boardOffsetY-3, 255, 0) ; invisible barrier
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txt.setcc(boardOffsetX-1, boardOffsetY-1, 108, 12)
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txt.setcc(boardOffsetX+boardWidth, boardOffsetY-1, 123, 12)
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txt.setcc(boardOffsetX+boardWidth, boardOffsetY-1, 123, 12)
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txt.setcc(boardOffsetX-1, boardOffsetY+boardHeight, 124, 12)
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txt.setcc(boardOffsetX+boardWidth, boardOffsetY+boardHeight, 126, 12)
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ubyte i
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for i in boardOffsetX+boardWidth-1 downto boardOffsetX {
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txt.setcc(i, boardOffsetY-3, 255, 0) ; invisible barrier
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txt.setcc(i, boardOffsetY+boardHeight, 69, 11)
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}
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for i in boardOffsetY+boardHeight-1 downto boardOffsetY {
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txt.setcc(boardOffsetX-1, i, 89, 11)
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txt.setcc(boardOffsetX+boardWidth, i, 84, 11)
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}
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ubyte[] colors = [6,8,7,5,4]
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for i in len(colors)-1 downto 0 {
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ubyte x
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for x in 5 downto 0 {
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txt.setcc(6+x-i, 11+2*i, 102, colors[i])
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}
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}
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drawScore()
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}
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sub drawScore() {
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txt.color(1)
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txt.plot(30,11)
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txt.print_uw(lines)
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txt.plot(30,15)
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txt.print_uw(score)
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txt.plot(9,22)
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txt.print_ub(speedlevel)
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}
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sub drawNextBlock() {
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const ubyte nextBlockXpos = 29
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const ubyte nextBlockYpos = 5
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ubyte x
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for x in nextBlockXpos+3 downto nextBlockXpos {
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txt.setcc2(x, nextBlockYpos, ' ', 0)
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txt.setcc2(x, nextBlockYpos+1, ' ', 0)
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}
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; reuse the normal block draw routine (because we can't manipulate array pointers yet)
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ubyte prev = blocklogic.currentBlockNum
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blocklogic.newCurrentBlock(nextBlock)
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drawBlock(nextBlockXpos, nextBlockYpos, false)
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blocklogic.newCurrentBlock(prev)
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}
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sub drawHoldBlock() {
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const ubyte holdBlockXpos = 7
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const ubyte holdBlockYpos = 6
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ubyte x
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for x in holdBlockXpos+3 downto holdBlockXpos {
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txt.setcc2(x, holdBlockYpos, '@', 0)
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txt.setcc2(x, holdBlockYpos+1, '@', 0)
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}
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if holding < 7 {
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; reuse the normal block draw routine (because we can't manipulate array pointers yet)
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ubyte prev = blocklogic.currentBlockNum
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blocklogic.newCurrentBlock(holding)
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drawBlock(holdBlockXpos, holdBlockYpos, false)
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blocklogic.newCurrentBlock(prev)
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}
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}
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sub drawBlock(ubyte x, ubyte y, bool erase) {
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ubyte char = 79 ; top left edge
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if erase
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char = 32 ; space
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ubyte @zp i
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for i in 15 downto 0 {
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ubyte @zp c=blocklogic.currentBlock[i]
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if c!=0 {
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if erase
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c=0
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else {
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ubyte edge = blocklogic.edgecolors[c]
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c <<= 4
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c |= edge
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}
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txt.setcc2((i&3)+x, (i/4)+y, char, c)
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}
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}
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}
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}
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blocklogic {
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ubyte currentBlockNum
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ubyte[16] currentBlock
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ubyte[16] rotated
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; the 7 tetrominos
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ubyte[] blockI = [0,0,0,0, ; blue note: special rotation (around matrix center)
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6,6,6,6,
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0,0,0,0,
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0,0,0,0]
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ubyte[] blockJ = [5,0,0,0, ; green
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5,5,5,0,
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0,0,0,0,
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0,0,0,0]
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ubyte[] blockL = [0,0,2,0, ; red
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2,2,2,0,
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0,0,0,0,
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0,0,0,0]
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ubyte[] blockO = [0,12,12,0, ; grey ; note: no rotation (square)
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0,12,12,0,
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0,0,0,0,
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0,0,0,0]
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ubyte[] blockS = [0,11,11,0, ; dark grey
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11,11,0,0,
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0,0,0,0,
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0,0,0,0]
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ubyte[] blockT = [0,9,0,0, ; brown
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9,9,9,0,
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0,0,0,0,
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0,0,0,0]
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ubyte[] blockZ = [4,4,0,0, ; purple
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0,4,4,0,
|
|
0,0,0,0,
|
|
0,0,0,0]
|
|
|
|
ubyte[16] edgecolors = [11, 1, 10, 0, 10, 13, 14, 1, 7, 7, 11, 12, 15, 1, 1, 1] ; highlighed colors for the edges
|
|
|
|
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) -> bool {
|
|
rotateCW()
|
|
bool nocollision = noCollision(xpos, ypos)
|
|
rotateCCW()
|
|
return nocollision
|
|
}
|
|
|
|
sub canRotateCCW(ubyte xpos, ubyte ypos) -> bool {
|
|
rotateCCW()
|
|
bool nocollision = noCollision(xpos, ypos)
|
|
rotateCW()
|
|
return nocollision
|
|
}
|
|
|
|
sub noCollision(ubyte xpos, ubyte ypos) -> bool {
|
|
ubyte @zp i
|
|
for i in 15 downto 0 {
|
|
if currentBlock[i]!=0 and txt.getchr(xpos + (i&3), ypos+i/4)!=32
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
sub isGameOver(ubyte xpos, ubyte ypos) -> bool {
|
|
main.drawBlock(xpos, ypos, true)
|
|
bool result = ypos==main.startYpos and not noCollision(xpos, ypos+1)
|
|
main.drawBlock(xpos, ypos, false)
|
|
return result
|
|
}
|
|
|
|
sub isLineFull(ubyte ypos) -> bool {
|
|
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.setcc2(x, ypos, char, color)
|
|
}
|
|
ypos--
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
sound {
|
|
sub init() {
|
|
cx16.vpoke(1, $f9c2, %00111111) ; volume max, no channels
|
|
psg.silent()
|
|
cx16.enable_irq_handlers(true)
|
|
cx16.set_vsync_irq_handler(&psg.envelopes_irq)
|
|
}
|
|
|
|
sub blockrotate() {
|
|
; soft click/"tschk" sound
|
|
psg.freq(0, 15600)
|
|
psg.voice(0, psg.LEFT | psg.RIGHT, 32, psg.NOISE, 0)
|
|
psg.envelope(0, 32, 200, 1, 100)
|
|
}
|
|
|
|
sub blockdrop() {
|
|
; swish
|
|
psg.freq(1, 4600)
|
|
psg.voice(1, psg.LEFT | psg.RIGHT, 32, psg.NOISE, 0)
|
|
psg.envelope(1, 32, 200, 5, 20)
|
|
}
|
|
|
|
sub swapping() {
|
|
; beep
|
|
psg.freq(2, 1500)
|
|
psg.voice(2, psg.LEFT | psg.RIGHT, 32, psg.TRIANGLE, 0)
|
|
psg.envelope(2, 40, 100, 6, 10)
|
|
}
|
|
|
|
sub lineclear() {
|
|
; explosion
|
|
psg.freq(3, 1400)
|
|
psg.voice(3, psg.LEFT | psg.RIGHT, 63, psg.NOISE, 0)
|
|
psg.envelope(3, 63, 100, 8, 10)
|
|
}
|
|
|
|
sub lineclear_big() {
|
|
; big explosion
|
|
psg.freq(4, 2500)
|
|
psg.voice(4, psg.LEFT | psg.RIGHT, 63, psg.NOISE, 0)
|
|
psg.envelope(4, 63, 100, 20, 10)
|
|
}
|
|
|
|
sub gameover() {
|
|
; attempt at buzz/boing
|
|
psg.freq(5, 300)
|
|
psg.freq(6, 600)
|
|
psg.voice(5, psg.LEFT | psg.RIGHT, 0, psg.SAWTOOTH, 0)
|
|
psg.voice(6, psg.LEFT | psg.RIGHT, 0, psg.TRIANGLE, 0)
|
|
psg.envelope(5, 50, 100, 30, 10)
|
|
psg.envelope(6, 50, 100, 30, 10)
|
|
}
|
|
}
|