67 lines
1.5 KiB
C++
67 lines
1.5 KiB
C++
// execution.cpp
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//
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// Copyright (C) 2001 Chris Laurel <claurel@shatters.net>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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#include "execution.h"
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using namespace std;
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Execution::Execution(CommandSequence& cmd, ExecutionEnvironment& _env) :
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currentCommand(cmd.begin()),
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finalCommand(cmd.end()),
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env(_env),
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commandTime(-1.0)
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{
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}
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bool Execution::tick(double dt)
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{
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// ignore the very first call to tick, because on windows dt may include the
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// time spent in the "Open File" dialog. Using commandTime < 0 as a flag
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// to recognize the first call:
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if (commandTime < 0.0)
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{
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commandTime = 0.0;
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return false;
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}
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while (dt > 0.0 && currentCommand != finalCommand)
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{
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Command* cmd = *currentCommand;
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double timeLeft = cmd->getDuration() - commandTime;
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if (dt >= timeLeft)
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{
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cmd->process(env, cmd->getDuration(), timeLeft);
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dt -= timeLeft;
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commandTime = 0.0;
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currentCommand++;
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}
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else
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{
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commandTime += dt;
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cmd->process(env, commandTime, dt);
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dt = 0.0;
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}
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}
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return currentCommand == finalCommand;
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}
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void Execution::reset(CommandSequence& cmd)
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{
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currentCommand = cmd.begin();
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finalCommand = cmd.end();
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commandTime = -1.0;
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}
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