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sprites example

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This commit is contained in:
Irmen de Jong 2018-12-31 01:52:18 +01:00
parent 500777bf78
commit aeb963673a
6 changed files with 99 additions and 20 deletions
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4
compiler/antlr/prog8.g4
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@ -173,7 +173,7 @@ functioncall_stmt :
expression_list :
expression (',' EOL? expression)*
expression (',' EOL? expression)* // you can split the expression list over several lines
;
returnstmt : 'return' expression_list? ;
@ -198,7 +198,7 @@ wordsuffix : '.w' ;
booleanliteral : 'true' | 'false' ;
arrayliteral : '[' EOL? expression (',' EOL? expression)* EOL? ']' ;
arrayliteral : '[' EOL? expression (',' EOL? expression)* EOL? ']' ; // you can split the array list over several lines
stringliteral : STRING ;

92
compiler/examples/sprites.p8
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@ -3,19 +3,99 @@
~ main {
ubyte[63] balloonsprite = [ %00000000, %01111111, %00000000,
%00000001, %11111111, %11000000,
%00000011, %11111111, %11100000,
%00000011, %11100011, %11100000,
%00000111, %11011100, %11110000,
%00000111, %11011101, %11110000,
%00000111, %11011100, %11110000,
%00000011, %11100011, %11100000,
%00000011, %11111111, %11100000,
%00000011, %11111111, %11100000,
%00000010, %11111111, %10100000,
%00000001, %01111111, %01000000,
%00000001, %00111110, %01000000,
%00000000, %10011100, %10000000,
%00000000, %10011100, %10000000,
%00000000, %01001001, %00000000,
%00000000, %01001001, %00000000,
%00000000, %00111110, %00000000,
%00000000, %00111110, %00000000,
%00000000, %00111110, %00000000,
%00000000, %00011100, %00000000 ]
const uword sprite_data_address = 13*64 ; // safe area inside the tape buffer
sub start() {
c64.STROUT("balloon sprites!\n")
c64.STROUT("...we are all floating...\n")
const uword SP0X = $d000 ; @todo "address-of" operator '&' so we can write &c64.SP0X
const uword SP0Y = $d001 ; @todo "address-of" operator '&' so we can write &c64.SP0Y
for ubyte i in 0 to 7 {
@(SP0X+i*2) = 30+i*30
@(SP0Y+i*2) = 100+i*10
; copy the ballon sprite data to the correct address and setup the sprite pointers
; @todo make a memcopy function for this, that calls c64utils.memcopy
for ubyte i in 0 to 62 {
;@(sprite_data_address+i) = @(balloonsprite+i) ; @todo nice error message
@(sprite_data_address+i) = balloonsprite[i]
}
c64.SPRPTR0 = sprite_data_address//64
c64.SPRPTR1 = sprite_data_address//64
c64.SPRPTR2 = sprite_data_address//64
c64.SPRPTR3 = sprite_data_address//64
c64.SPRPTR4 = sprite_data_address//64
c64.SPRPTR5 = sprite_data_address//64
c64.SPRPTR6 = sprite_data_address//64
c64.SPRPTR7 = sprite_data_address//64
c64.SP0X = 30+30*0
c64.SP1X = 30+30*1
c64.SP2X = 30+30*2
c64.SP3X = 30+30*3
c64.SP4X = 30+30*4
c64.SP5X = 30+30*5
c64.SP6X = 30+30*6
c64.SP7X = 30+30*7
c64.SP0Y = 100+10*0
c64.SP1Y = 100+10*1
c64.SP2Y = 100+10*2
c64.SP3Y = 100+10*3
c64.SP4Y = 100+10*4
c64.SP5Y = 100+10*5
c64.SP6Y = 100+10*6
c64.SP7Y = 100+10*7
c64.SPENA = 255 ; enable all sprites
}
}
~ irq {
sub irq() {
c64.SP0Y--
c64.SP1Y--
c64.SP2Y--
c64.SP3Y--
c64.SP4Y--
c64.SP5Y--
c64.SP6Y--
c64.SP7Y--
; const uword SP0X = $d000
; for ubyte i in 0 to 7 {
; @(SP0X+i*2) = @(SP0X+i*2) + 1 ; @todo this doesn't read (or write?) the correct values..
; ubyte r = rnd()
; if r>228
; ; @(SP0X+i*2)++ ; @todo allow this
; @(SP0X+i*2) = @(SP0X+i*2)+1
; else {
; if r<28
; @(SP0X+i*2) = @(SP0X+i*2)-1
; }
; }
}
}

13
compiler/examples/test.p8
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@ -4,14 +4,11 @@
sub start() {
uword vic = $d000
const uword cvic = $d000
@(cvic+$20) = 7
@(cvic+$21) = @(cvic+$20)
@(vic+$20) = 5
@(vic+$21) = @(vic+$20)
ubyte[63] balloonsprite = [ 0,127,0,1,255,192,3,255,224,3,231,224,
7,217,240,7,223,240,7,217,240,3,231,224,
3,255,224,3,255,224,2,255,160,1,127,64,
1,62,64,0,156,128,0,156,128,0,73,0,0,73,0,
0,62,0,0,62,0,0,62,0,0,28,0 ]
}
}

1
docs/source/programming.rst
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@ -208,6 +208,7 @@ Array types are also supported. They can be made of bytes, words and floats::
This means byte arrays should be <= 256 elements, word arrays <= 128 elements, and float
arrays <= 51 elements. This limit may or may not be lifted in a future version.
You can split an array initializer list over several lines if you want.
Note that the various keywords for the data type and variable type (``byte``, ``word``, ``const``, etc.)
can't be used as *identifiers* elsewhere. You can't make a variable, block or subroutine with the name ``byte``

1
docs/source/syntaxreference.rst
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@ -254,6 +254,7 @@ type identifier type storage size example var declara
(screencodes) implicit first byte = length, no 0-byte
=============== ======================= ================= =========================================
**arrays:** you can split an array initializer list over several lines if you want.
**hexadecimal numbers:** you can use a dollar prefix to write hexadecimal numbers: ``$20ac``

8
prog8lib/c64utils.p8
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@ -317,11 +317,11 @@ memcopy16_up .proc
; clobbers A, X, Y
memcopy .proc
sta SCRATCH_ZPWORD2
sty SCRATCH_ZPWORD2+1
sta c64.SCRATCH_ZPWORD2
sty c64.SCRATCH_ZPWORD2+1
ldy #0
- lda (SCRATCH_ZPWORD1), y
sta (SCRATCH_ZPWORD2), y
- lda (c64.SCRATCH_ZPWORD1), y
sta (c64.SCRATCH_ZPWORD2), y
iny
dex
bne -