mirror of
https://github.com/JetSetIlly/Gopher2600.git
synced 2024-05-20 05:40:49 -04:00
80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
// This file is part of Gopher2600.
|
|
//
|
|
// Gopher2600 is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// Gopher2600 is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Gopher2600. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
package preview
|
|
|
|
import (
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/jetsetilly/gopher2600/cartridgeloader"
|
|
"github.com/jetsetilly/gopher2600/debugger/govern"
|
|
"github.com/jetsetilly/gopher2600/environment"
|
|
"github.com/jetsetilly/gopher2600/hardware"
|
|
"github.com/jetsetilly/gopher2600/hardware/preferences"
|
|
"github.com/jetsetilly/gopher2600/hardware/television"
|
|
)
|
|
|
|
type Emulation struct {
|
|
vcs *hardware.VCS
|
|
}
|
|
|
|
// NewEmulation is the preferred method of initialisation for the Emulation type
|
|
func NewEmulation(prefs *preferences.Preferences) (*Emulation, error) {
|
|
em := &Emulation{}
|
|
|
|
// the VCS and not referred to directly again
|
|
tv, err := television.NewTelevision("AUTO")
|
|
if err != nil {
|
|
return nil, fmt.Errorf("preview: %w", err)
|
|
}
|
|
tv.SetFPSCap(false)
|
|
|
|
// create a new VCS emulation
|
|
em.vcs, err = hardware.NewVCS(tv, nil, prefs)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("preview: %w", err)
|
|
}
|
|
em.vcs.Env.Label = environment.Label("preview")
|
|
|
|
return em, nil
|
|
}
|
|
|
|
// RunN runs the preview emulation for N frames
|
|
func (em *Emulation) RunN(loader cartridgeloader.Loader, N int) error {
|
|
// we don't want the preview emulation to run for too long
|
|
timeout := time.After(1 * time.Second)
|
|
|
|
em.vcs.AttachCartridge(loader, true)
|
|
err := em.vcs.RunForFrameCount(N, func(_ int) (govern.State, error) {
|
|
select {
|
|
case <-timeout:
|
|
return govern.Ending, nil
|
|
default:
|
|
}
|
|
return govern.Running, nil
|
|
})
|
|
if err != nil {
|
|
return fmt.Errorf("preview: %w", err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Run the preview emulation for 30 frames
|
|
func (em *Emulation) Run(loader cartridgeloader.Loader) error {
|
|
return em.RunN(loader, 30)
|
|
}
|