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MADS: Properly implement sequence entry object movement

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This commit is contained in:
Paul Gilbert 2014-05-24 19:25:31 -04:00
parent 87f7c0cda3
commit 690d956403
2 changed files with 40 additions and 28 deletions
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59
engines/mads/sequence.cpp
View File

@ -39,12 +39,6 @@ SequenceEntry::SequenceEntry() {
_depth = 0;
_scale = 0;
_dynamicHotspotIndex = -1;
_field18 = 0;
_field1A = 0;
_field1C = 0;
_field1E = 0;
_field20 = 0;
_field22 = 0;
_triggerCountdown = 0;
_doneFlag = 0;
_triggerMode = SEQUENCE_TRIGGER_DAEMON;
@ -226,26 +220,27 @@ bool SequenceList::loadSprites(int seqIndex) {
int height = frame->getHeight() * seqEntry._scale / 100;
Common::Point pt = spriteSlot._position;
// ToDO: Find out the proper meanings of the following fields
// Handle sprite movement, if present
if (seqEntry._flags & 1) {
seqEntry._field20 += seqEntry._field18;
if (seqEntry._field20 >= 100) {
int v = seqEntry._field20 / 100;
seqEntry._position.x += v * seqEntry._field1C;
seqEntry._field20 -= v * 100;
seqEntry._posAccum.x += seqEntry._posDiff.x;
if (seqEntry._posAccum.x >= 100) {
int v = seqEntry._posAccum.x / 100;
seqEntry._position.x += v * seqEntry._posSign.x;
seqEntry._posAccum.x -= v * 100;
}
seqEntry._field22 += seqEntry._field1A;
if (seqEntry._field22 >= 100) {
int v = seqEntry._field22 / 100;
seqEntry._position.y += v * seqEntry._field1E;
seqEntry._field22 -= v * 100;
seqEntry._posAccum.y += seqEntry._posDiff.y;
if (seqEntry._posAccum.y >= 100) {
int v = seqEntry._posAccum.y / 100;
seqEntry._position.y += v * seqEntry._posSign.y;
seqEntry._posAccum.y -= v * 100;
}
}
if (seqEntry._flags & 2) {
// Check for object having moved off-scren
if ((pt.x + width) < 0 || (pt.x + width) >= MADS_SCREEN_WIDTH ||
pt.y < 0 || (pt.y + height) >= MADS_SCENE_HEIGHT) {
pt.y < 0 || (pt.y - height) >= MADS_SCENE_HEIGHT) {
result = true;
seqEntry._doneFlag = true;
}
@ -509,10 +504,30 @@ void SequenceList::setDone(int seqIndex) {
}
void SequenceList::setMotion(int seqIndex, int flags, int deltaX, int deltaY) {
warning("TODO: setMotion()");
// HACK: Just offset by the delta for now
_entries[seqIndex]._position.x += deltaX;
_entries[seqIndex]._position.y += deltaY;
SequenceEntry &se = _entries[seqIndex];
se._flags = flags | 1;
// Set the direction sign for movement
if (deltaX > 0) {
se._posSign.x = 1;
} else if (deltaX < 0) {
se._posSign.x = -1;
} else {
se._posSign.x = 0;
}
if (deltaY > 0) {
se._posSign.y = 1;
}
else if (deltaY < 0) {
se._posSign.y = -1;
} else {
se._posSign.y = 0;
}
se._posDiff.x = ABS(deltaX);
se._posDiff.y = ABS(deltaY);
se._posAccum.x = se._posAccum.y = 0;
}
} // End of namespace

9
engines/mads/sequence.h
View File

@ -69,12 +69,9 @@ struct SequenceEntry {
uint32 _flags;
Common::Point _position;
int _field18;
int _field1A;
int _field1C;
int _field1E;
int _field20;
int _field22;
Common::Point _posDiff;
Common::Point _posSign;
Common::Point _posAccum;
int _triggerCountdown;
bool _doneFlag;
SequenceSubEntries _entries;