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KYRA: (LOK) - implement FM-TOWNS specific screen shake

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(the FM-TOWNS version has a better shake animation)
This commit is contained in:
athrxx 2020-01-07 20:13:42 +01:00
parent 3dd3b61685
commit 70d7de0b98
1 changed files with 24 additions and 19 deletions
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43
engines/kyra/graphics/screen.cpp
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@ -3170,26 +3170,31 @@ void Screen::rectClip(int &x, int &y, int w, int h) {
}
void Screen::shakeScreen(int times) {
static const int8 _shakeParaPC[] = { 32, 0, -4, 32, 0, 0 };
static const int8 _shakeParaFMTOWNS[] = { 32, 0, -4, 48, 0, 4, 32, -4, 0, 32, 4, 0, 32, 0, 0 };
const int8 *data = _shakeParaPC;
int steps = ARRAYSIZE(_shakeParaPC) / 3;
// The FM-TOWNS version has a slightly better shake animation
// TODO: check PC-98 version
if (_vm->gameFlags().platform == Common::kPlatformFMTowns) {
data = _shakeParaFMTOWNS;
steps = ARRAYSIZE(_shakeParaFMTOWNS) / 3;
}
while (times--) {
// The original did not need an artificial delay, but we do.
// Or the shake will be too fast to be actually seen.
uint32 delayuntil = _system->getMillis() + 16;
// seems to be 1 line (320 pixels) offset in the original
// -4 looks more like dosbox though, maybe check this again
_system->setShakePos(0, -4);
_system->updateScreen();
int diff = delayuntil - _system->getMillis();
if (diff > 0)
_system->delayMillis(diff);
delayuntil = _system->getMillis() + 16;
_system->setShakePos(0, 0);
_system->updateScreen();
diff = delayuntil - _system->getMillis();
if (diff > 0)
_system->delayMillis(diff);
for (int i = 0; i < steps; ++i) {
// The original PC version did not need an artificial delay, but we do.
// Or the shake will be too fast to be actually seen.
uint32 delayuntil = _system->getMillis() + data[0];
_system->setShakePos(data[1], data[2]);
_system->updateScreen();
int diff = delayuntil - _system->getMillis();
if (diff > 0)
_system->delayMillis(diff);
data += 3;
}
}
}