mirror of
https://github.com/JetSetIlly/Gopher2600.git
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52 lines
1.5 KiB
Go
52 lines
1.5 KiB
Go
// This file is part of Gopher2600.
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//
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// Gopher2600 is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Gopher2600 is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Gopher2600. If not, see <https://www.gnu.org/licenses/>.
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package rewind
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// ComparisonState is returned by GetComparisonState()
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type ComparisonState struct {
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State *State
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Locked bool
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}
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// GetComparisonState gets a reference to current comparison point
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func (r *Rewind) GetComparisonState() ComparisonState {
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return ComparisonState{
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State: r.comparison.snapshot(),
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Locked: r.comparisonLocked,
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}
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}
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// UpdateComparison points comparison to the current state
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func (r *Rewind) UpdateComparison() {
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if r.comparisonLocked {
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return
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}
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r.comparison = r.GetCurrentState()
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}
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// SetComparison points comparison to the supplied state
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func (r *Rewind) SetComparison(frame int) {
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res := r.findFrameIndexExact(frame)
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s := r.entries[res.nearestIdx]
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if s != nil {
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r.comparison = s.snapshot()
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}
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}
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// LockComparison stops the comparison point from being updated
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func (r *Rewind) LockComparison(locked bool) {
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r.comparisonLocked = locked
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}
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