How do you know it's 50fps? Can you tell just by looking, or is there some other way you'd know that?
Scuttlebutt
Re: Scuttlebutt
Derek Fountain, author of the ZX Spectrum C Programmer's Getting Started Guide and various open source games, hardware and other projects, including an IF1 and ZX Microdrive emulator.
Re: Scuttlebutt
Great! Actually I believed that it was intendedThanks! The music is mostly fixed now, I believe.
- Ast A. Moore
- Rick Dangerous
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Re: Scuttlebutt
Both. (Trust me, I know a thing or two about writing games for the Spectrum, which run at 50 fps. )
P.S. You use Fuse, right?
Every man should plant a tree, build a house, and write a ZX Spectrum game.
Author of A Yankee in Iraq, a 50 fps shoot-’em-up—the first game to utilize the floating bus on the +2A/+3,
and zasm Z80 Assembler syntax highlighter.
Author of A Yankee in Iraq, a 50 fps shoot-’em-up—the first game to utilize the floating bus on the +2A/+3,
and zasm Z80 Assembler syntax highlighter.
Re: Scuttlebutt
OK, so for those of us without that experience, what's the other way?Ast A. Moore wrote: ↑Wed Feb 28, 2018 9:23 amBoth. (Trust me, I know a thing or two about writing games for the Spectrum, which run at 50 fps. )
Derek Fountain, author of the ZX Spectrum C Programmer's Getting Started Guide and various open source games, hardware and other projects, including an IF1 and ZX Microdrive emulator.
- Ast A. Moore
- Rick Dangerous
- Posts: 2641
- Joined: Mon Nov 13, 2017 3:16 pm
Re: Scuttlebutt
1. The intuitive way (requires experience, though): Slow your emulator down to 2 percent of the original speed.dfzx wrote: ↑Wed Feb 28, 2018 9:26 amOK, so for those of us without that experience, what's the other way?Ast A. Moore wrote: ↑Wed Feb 28, 2018 9:23 am Both. (Trust me, I know a thing or two about writing games for the Spectrum, which run at 50 fps. )
2. The tedious but informative way: Break into the running program using your favorite debugger/monitor and single-step for the duration of one frame (approximately). (Most emulators have debuggers that display the current T state. Fuse, does, anyway.)
Every man should plant a tree, build a house, and write a ZX Spectrum game.
Author of A Yankee in Iraq, a 50 fps shoot-’em-up—the first game to utilize the floating bus on the +2A/+3,
and zasm Z80 Assembler syntax highlighter.
Author of A Yankee in Iraq, a 50 fps shoot-’em-up—the first game to utilize the floating bus on the +2A/+3,
and zasm Z80 Assembler syntax highlighter.
Re: Scuttlebutt
I loved the carton game style
Re: Scuttlebutt
Actually there is some hidden feature in Spin emulator which enables it. I don't remember the details but you have to press some obscure shortcut and extra buttons will appear. One of them is "advance emulator by one frame". So you pause the emulator first, then press the button, game advances by one frame and you see if something moved or notHow do you know it's 50fps? Can you tell just by looking, or is there some other way you'd know that?
Re: Scuttlebutt
Interesting.
Maybe someone knows which shortcut activates this option.
Does SpecEmu have such a feature?
Maybe someone knows which shortcut activates this option.
Does SpecEmu have such a feature?
Re: Scuttlebutt
Maybe someone knows which shortcut activates this option.
Found it:
https://www.worldofspectrum.org/forums/ ... ent_141012
Found it:
https://www.worldofspectrum.org/forums/ ... ent_141012
There's also the option to "frame advance" whilst paused - pause the emulation, then right click the pause button. The buttons will be replaced with a new set - debugger, full speed and frame advance. Clicking frame advance will emulate one frame and then stop.
Re: Scuttlebutt
I'm trying to think what "frame advance" actually means. Does it mean "run as far as the next HALT instruction"? Or until the next interrupt fires? What actually would a frame advance be, in Spectrum terms?Ralf wrote: ↑Fri Mar 02, 2018 10:09 am Maybe someone knows which shortcut activates this option.
Found it:
https://www.worldofspectrum.org/forums/ ... ent_141012
There's also the option to "frame advance" whilst paused - pause the emulation, then right click the pause button. The buttons will be replaced with a new set - debugger, full speed and frame advance. Clicking frame advance will emulate one frame and then stop.
Derek Fountain, author of the ZX Spectrum C Programmer's Getting Started Guide and various open source games, hardware and other projects, including an IF1 and ZX Microdrive emulator.
Re: Scuttlebutt
It could be as simple as 'run until 20ms (simulated) has passed'.