gr: particle effect
This commit is contained in:
Vince Weaver
parent
fdeee10096
commit
8dfb365ab5
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@ -21,7 +21,7 @@ appleiibot.dsk: E2.BAS FLAME.BAS FLAME2.BAS HELLO \
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FIREWORKS.BAS THINKING.BAS ARCS.BAS WIRE_HGR.BAS STATIC.BAS \
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OVAL.BAS OVAL_HGR.BAS MOVING.BAS THICK_SINE.BAS TURKEY.BAS \
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FLAME_HGR.BAS RECT.BAS SNOWY.BAS EDGAR.BAS OOPS4.BAS OOPS3.BAS \
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HORROR.BAS DIAMOND.BAS LEMM.BAS OOPS.BAS SPLIT.BAS
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HORROR.BAS DIAMOND.BAS LEMM.BAS OOPS.BAS SPLIT.BAS PARTICLE.BAS
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# cp $(EMPTY_DISK)/empty.dsk appleiibot.dsk
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cp empty.dsk appleiibot.dsk
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$(DOS33) -y appleiibot.dsk BSAVE -a 0x0300 LOAD
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@ -116,6 +116,7 @@ appleiibot.dsk: E2.BAS FLAME.BAS FLAME2.BAS HELLO \
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$(DOS33) -y appleiibot.dsk SAVE A LEMM.BAS
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$(DOS33) -y appleiibot.dsk SAVE A OOPS.BAS
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$(DOS33) -y appleiibot.dsk SAVE A SPLIT.BAS
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$(DOS33) -y appleiibot.dsk SAVE A PARTICLE.BAS
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####
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@ -660,5 +661,10 @@ SPLIT.BAS: split.bas
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####
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PARTICLE.BAS: particle.bas
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$(TOKENIZE) < particle.bas > PARTICLE.BAS
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####
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clean:
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rm -f *~ *.o *.lst convert_to convert_from convert_qkumba convert_vmw make_boxes convert_back convert_tgreene LOAD *.BAS make_hgr_boxes
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@ -0,0 +1,2 @@
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1FORI=0TO139:POKE876+I,4*PEEK(2125+I)-204+(PEEK(2265+I/3)-35)/4^(I-INT(I/3)*3):NEXT
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2&"-ho<Gc<Hc]L;YqZ/3Z.3Z-3Z(2ebnb/:R,:Z3;?7eGU5r/;b.:R/;Z2;?3eKR9]<Z35DZ.:]5Z3/8k2eSLZ3/8k2Z3;b3;;Loj3;?ib3;A\b*9E;3qeg]iV\9C<<U3A_TBDD65m5KFK3[++$337;O73?#)K373''7';7*U*)V*'%+%$5G#%;NC4*@#/
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@ -0,0 +1,47 @@
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include ../../../Makefile.inc
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DOS33 = ../../../utils/dos33fs-utils/dos33
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PNG2GR = ../../../utils/gr-utils/png2gr
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PNG2RLE = ../../../utils/gr-utils/png2rle
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TOKENIZE = ../../../utils/asoft_basic-utils/tokenize_asoft
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LINKERSCRIPTS = ../../../linker_scripts
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EMPTY_DISK = ../../../empty_disk
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all: particle.dsk
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$(DOS33):
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cd ../../../utils/dos33fs-utils && make
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particle.dsk: $(DOS33) HELLO PARTICLE PARTICLE_BOT
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cp $(EMPTY_DISK)/empty.dsk particle.dsk
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$(DOS33) -y particle.dsk SAVE A HELLO
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$(DOS33) -y particle.dsk BSAVE -a 0xc00 PARTICLE
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$(DOS33) -y particle.dsk BSAVE -a 0x36C PARTICLE_BOT
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###
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HELLO: hello.bas
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$(TOKENIZE) < hello.bas > HELLO
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###
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PARTICLE: particle.o
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ld65 -o PARTICLE particle.o -C $(LINKERSCRIPTS)/apple2_c00.inc
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particle.o: particle.s
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ca65 -o particle.o particle.s -l particle.lst
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###
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PARTICLE_BOT: particle_bot.o
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ld65 -o PARTICLE_BOT particle_bot.o -C $(LINKERSCRIPTS)/apple2_36c.inc
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particle_bot.o: particle_bot.s
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ca65 -o particle_bot.o particle_bot.s -l particle_bot.lst
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###
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clean:
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rm -f *~ *.o *.lst HELLO PARTICLE PARTICLE_BOT
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@ -0,0 +1,2 @@
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5 HOME
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10 PRINT CHR$(4);"CATALOG"
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@ -0,0 +1,189 @@
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; particle effect? -- Apple II Lores
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; by Vince `deater` Weaver
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PARTICLES = 128
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SCALE = 2
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COLOR = $30
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QUOTIENT = $FA
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DIVISOR = $FB
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DIVIDEND = $FC
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XX = $FD
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YY = $FE
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FRAME = $FF
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FULLGR = $C052
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LORES = $C056 ; Enable LORES graphics
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HGR2 = $F3D8
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HGR = $F3E2
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PLOT = $F800 ; PLOT AT Y,A (A colors output, Y preserved)
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SETGR = $FB40
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WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
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particle_x = $2000
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particle_y = $2100
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particle_life = $2200
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particle_vx = $2300
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particle_vy = $2400
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particle_decay = $2600
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particle:
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jsr SETGR
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bit FULLGR
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; init
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ldx #PARTICLES
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init_particles_loop:
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jsr init_particle
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dex
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bpl init_particles_loop
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main_loop:
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lda #200
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jsr WAIT
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; clear screen
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ldx #0
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lda #$8
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sta clear_loop_smc+2
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lda #0
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clear_loop:
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clear_loop_smc:
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sta $400,X
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dex
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bne clear_loop
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dec clear_loop_smc+2
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ldy clear_loop_smc+2
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cpy #3
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bne clear_loop
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; move particles
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; draw particles
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ldx #PARTICLES
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draw_particles_loop:
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; adjust x
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lda particle_x,X
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clc
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adc particle_vx,X
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sta particle_x,X
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bmi redo_particle
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cmp #40*SCALE
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bcs redo_particle
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; adjust y
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; first adjust for gravity
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inc particle_vy,X
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; inc particle_vy,X
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lda particle_y,X
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clc
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adc particle_vy,X
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sta particle_y,X
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bmi redo_particle
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cmp #48*SCALE
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bcc y_good
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redo_particle:
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jsr init_particle
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y_good:
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lda particle_life,X
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sta COLOR
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sec
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sbc #$11
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sta particle_life,X
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cmp #$ef
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beq redo_particle
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lda particle_x,X
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lsr
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tay
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lda particle_y,X
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lsr
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jsr PLOT ; PLOT AT Y,A
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dex
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bpl draw_particles_loop
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jmp main_loop
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; init particle
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; particle in X
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init_particle:
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; source
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lda #20*SCALE
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sta particle_x,X
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lda #10*SCALE
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sta particle_y,X
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; color
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lda #$ff
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sta particle_life,X
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; velocities
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; -8 to 8?
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jsr random
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cmp #$80
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ror
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sta particle_vx,X
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jsr random
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sta particle_vy,X
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; we don't actually use this?
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; lda #32
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; sta particle_decay,X
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rts
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; -8 to 8
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random:
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inc random_smc+1
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bne noflo
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inc random_smc+2
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beq noflo
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lda #$d0
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sta random_smc+2
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noflo:
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random_smc:
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lda $d000
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and #$f
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sec
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sbc #$8
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rts
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; need this to be at $3F5
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jmp particle
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@ -0,0 +1,176 @@
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; particle effect? -- Apple II Lores
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; by Vince `deater` Weaver
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; 175 bytes at start
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; 169 bytes -- use batari RNG
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; 163 bytes -- optimize clear screen
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; 159 bytes -- WAIT leaves A as 0, X is 0 on other loop
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; 154 bytes -- init with HGR
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; 150 bytes -- inline particle_init
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; 145 bytes -- optimize color code
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PARTICLES = 256
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SCALE = 2
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SEEDHI = $43
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SEEDLO = $44
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COLOR = $30
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FULLGR = $C052
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LORES = $C056 ; Enable LORES graphics
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HGR2 = $F3D8
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HGR = $F3E2
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PLOT = $F800 ; PLOT AT Y,A (A colors output, Y preserved)
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SETCOL = $F864 ; COLOR=A
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SETGR = $FB40
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WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
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particle_x = $2000
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particle_y = $2100
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particle_life = $2200
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particle_vx = $2300
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particle_vy = $2400
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particle_decay = $2600
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particle:
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; HGR clears our particle area to 0
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jsr HGR
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bit FULLGR
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bit LORES ; lores
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main_loop:
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lda #100
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jsr WAIT
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; clear screen
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; X is 0 at least on the second time through
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; ldx #0
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; txa
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clear_loop:
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sta $400,X
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sta $500,X
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sta $600,X
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sta $700,X
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dex
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bne clear_loop
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; move particles
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; draw particles
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;ldx #0 ; 256 particles (X should be 0 here)
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draw_particles_loop:
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; adjust x
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lda particle_x,X
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; clc
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adc particle_vx,X
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sta particle_x,X
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bmi redo_particle ; new particle if off screen
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cmp #40*SCALE
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bcs redo_particle
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; adjust y
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; first adjust for gravity
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inc particle_vy,X
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lda particle_y,X
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; clc
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adc particle_vy,X
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sta particle_y,X
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bmi redo_particle ; new particle if off screen
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cmp #48*SCALE
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bcc y_good
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redo_particle:
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; init particle
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; particle in X
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init_particle:
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; source
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lda #20*SCALE
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sta particle_x,X
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lsr
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; lda #10*SCALE
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sta particle_y,X
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; color
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lda #$f
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sta particle_life,X
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; velocities
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; -8 to 8?
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jsr random
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cmp #$80 ; asr
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ror
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sta particle_vx,X
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jsr random
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sta particle_vy,X
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; done inline
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y_good:
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lda particle_life,X ; set color
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jsr SETCOL
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dec particle_life,X ; decreent color
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bmi redo_particle ; if <0 then new particle
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lda particle_x,X ; we're actually *2
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lsr
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tay
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lda particle_y,X
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lsr
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jsr PLOT ; PLOT AT Y,A
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dex
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bne draw_particles_loop
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beq main_loop
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; -8 to 8
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; batari RNG
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random:
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lda SEEDHI
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lsr
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rol SEEDLO
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bcc noeor
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eor #$B4
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noeor:
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sta SEEDHI
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eor SEEDLO
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and #$f
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; sec
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sbc #$8
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rts
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; need this to be at $3F5
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; 140 so 137, $36C
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jmp particle
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