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Game loop design?Having some thoughts on how to design the game loop and could do with some hints and tips from folks who have done it before! It's all about how to …
... should be prepared then that routine should be called (after reenabling ... your entire 'proper' code as CALL draw_screen \ HALT \ JR halt_inst \.< ... first screen
enter IM2 routine
new screen to ...
--interupt during this call - took a long time
need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... of the sprites. Then call your sprite drawing routine.
If ... you want the sprite routine to be versatile and cope ... />
In my own sprite routine, which is for 16x16 sprites ... on. Have a separate drawing routine for each line and jump ...need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... BC ;At present routine is written to handle ... br /> HALT
CALL DRAWSPR ;Call sprite drawing routine
...
* Routine to Generate a screen address ...
* Routine to generate a table of ...Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... --it appears not to call my IM2 routine, but it has a ...Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... enabled, processor jumps to interrupt routine (TIME: 0)
in the ... speccy 48: stack above 32768 (call,push,pop,ret acces memory ...IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... INTERRUPT ROUTINE ***
Start:
ld a,0
call ... /> CALL AChar
CALL DoAttr
CALL PChar
CALL WChar
CALL ...IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
...
; **** END INTERRUPT ROUTINE ***
MoveAndPrintSprite:
CALL WriteSpriteChar
CALL WrapCharVertically
CALL WriteSpriteChar
CALL WrapCharVertically
CALL ...3d Code... simple Anyone know where I can get some examples of 3d routines written in basic... I`ve done some googling, and come up with some source for PowerBasic or…
... polygon view like Driller? The routine would vary enormously depending on ... camera position as you would call it in modern games)? Is ... to the horizontal plane? The routine will be simpler if the ... the code. Mind you, the routine was as slow as hell ...Anyone know the address mappings...of the hardware resources on the speccy; From the screen display address range to all the hardware control registers. etc. Where can I get access t…
... speed optimisation, it contains a routine for doing sprites from unshifted ... coord of sprite we are test for
;collision with
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... PC
|
Call Opcode_Handler
|
Test TStates = 69888
|(no ... ) |(yes)
| |
| | Call Update_Display
I need ASM for random numberI need to generate a random pair of coardinates in asm so that x=random no between 0 and 31, y=random no between 0 and 23. Any ideas on how to code …
... . the timer and then call the RND-routine with A holding the ...
LD A,6
CALL RND
will produce ...Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
...
ORG 32768
CALL INITIM2
; Fill Back ... /> LD B,A
CALL WRITECHAR
POP BC
; **** END INTERRUPT ROUTINE ***
WRITECHAR:
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
...
ORG 32768
CALL INITIM2
; Fill Back ... /> LD B,A
CALL WRITECHAR
POP BC
; **** END INTERRUPT ROUTINE ***
WRITECHAR:
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
...
ORG 32768
CALL INITIM2
; Fill Back ... /> LD B,A
CALL WRITECHAR
POP BC
; **** END INTERRUPT ROUTINE ***
WRITECHAR:
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... the example of Phil's test suite which keeps getting thrown ... it hard to write a routine that can determine if an ...RZX for Sabre WulfI was just about to send an RZX for Sabre Wulf to the RZX Archive when I noticed they don't accept Ultimate's (and other companies' who haven't given…
... pain in the bum to call, besides...
I always ... the ROM routine, hacked to make it easy to call, until I ... devised my own version of the routine which ... same algorithm as the ROM routine but is integer-only and ...Zecut0r and ZAFA while ago (about 2 yrs)i took VbSpec and tried to port it to Delphi 6. Althought it was pretty weak, it. Meanwhile DelphiSpec 0.1 appeared and i wa…
...
equal smaller greater conditions test.
3 Octomber ... poke16 peek peek16 usr jump call over swap plot added
Interesting Custom LoadersHi everyone, I was just thinking about custom loaders on the spectrum and I thought I'd ask you all what you thought was the best one. I'd have to …
... can't test this until I write my custom loading routine, hence ...New Turbo-Load version of Tales From A Parallel UniverseNot very interesting to most, but I know some of you still use 'real' Spectrums. While fiddling around with a program I created ages ago to build c…
... finished. The call to 32768 there is the 'decompress' routine for the ... code!). Line 40 is the call to actually start the game ... copy of the ROM loader routine which has been 'fiddled around ...Compressed Loading ScreensHi everybody From my speccy memories I could swear I could remember games with loading screens that took less than normal time to load. But up until…
... the normal ROM-routine, but there is a test for pressing YRS ...Reading the keyboardDoes anyone have a code sample to read the keyboard in machine code ?
IX isn't even used in the routine...
even better is CALL 0, heheReading the keyboardDoes anyone have a code sample to read the keyboard in machine code ?
... the routine out of a larger program. As regards the CALL 0 ... , if you check the routine you'll see ... to point to the service routine.
[ This Message was ...Reading the keyboardDoes anyone have a code sample to read the keyboard in machine code ?
... regards the CALL 0, if you check the routine you'll see ... to point to the service routine.
[ This Message was ...Reading the keyboardDoes anyone have a code sample to read the keyboard in machine code ?
... /> Why not use the ROM-routine if you want to read ... use it and alter the routine to scan for more keys ... /> [/quote]
The ROM routine wants to deal in cursor ...
ld a,(state)
call SPtbllookup ; a = length of time ...Help required to calculate screen addressesDoes anyone have some code that calculates the screen address one pixel below the given address ? Is it best to use a lookup table ? Any examples of …
... standalone subroutine to do it - call it with your address in ... it directly in a sprite routine. A better way would be ...Help required to calculate screen addressesDoes anyone have some code that calculates the screen address one pixel below the given address ? Is it best to use a lookup table ? Any examples of …
...
LD A,B
CALL #22B1 ; CALCULATED ADDRESS TO HL ... />
The PLOT-routine starts leftunder, this routine assumes that the pixels ...Key Redefine RoutineAnyone written a nice key redefine code snippet?
... Note: when you calls this routine, it will wait for any ... /> in: out data from previous routine
out: in A - ... :
[code]
TRANSF CALL COUNN
LD E,A ...
XOR 255
CALL COUNN
LD D,A ...Idea for a new feature to compliment a debugger in an emulatorI had an idea for an emulator feature yesterday. Don't recall having seen this idea before, but I'm sure you'll correct me if it has. :) In that cas…
... through something manually, you could call up some sort of graphical ... some sort of graphical routine or something and call this thing up ... to the heart of the routine you wanted to tear apart ...
