diff options
| -rw-r--r-- | engines/gob/aniobject.cpp | 32 | ||||
| -rw-r--r-- | engines/gob/aniobject.h | 8 |
2 files changed, 30 insertions, 10 deletions
diff --git a/engines/gob/aniobject.cpp b/engines/gob/aniobject.cpp index 8d3a6897bf..7e3668a0ce 100644 --- a/engines/gob/aniobject.cpp +++ b/engines/gob/aniobject.cpp @@ -101,7 +101,7 @@ void ANIObject::getPosition(int16 &x, int16 &y) const { y = _y; } -void ANIObject::getFramePosition(int16 &x, int16 &y) const { +void ANIObject::getFramePosition(int16 &x, int16 &y, uint16 n) const { // CMP "animations" have no specific frame positions if (_cmp) { getPosition(x, y); @@ -115,11 +115,24 @@ void ANIObject::getFramePosition(int16 &x, int16 &y) const { if (_frame >= animation.frameCount) return; - x = _x + animation.frameAreas[_frame].left; - y = _y + animation.frameAreas[_frame].top; + // If we're paused, we don't advance any frames + if (_paused) + n = 0; + + // Number of cycles run through after n frames + uint16 cycles = (_frame + n) / animation.frameCount; + // Frame position after n frames + uint16 frame = (_frame + n) % animation.frameCount; + + // Only doing one cycle? + if (_mode == kModeOnce) + cycles = MAX<uint16>(cycles, 1); + + x = _x + animation.frameAreas[frame].left + cycles * animation.deltaX; + y = _y + animation.frameAreas[frame].top + cycles * animation.deltaY; } -void ANIObject::getFrameSize(int16 &width, int16 &height) const { +void ANIObject::getFrameSize(int16 &width, int16 &height, uint16 n) const { if (_cmp) { width = _cmp->getWidth (_animation); height = _cmp->getHeight(_animation); @@ -134,8 +147,15 @@ void ANIObject::getFrameSize(int16 &width, int16 &height) const { if (_frame >= animation.frameCount) return; - width = animation.frameAreas[_frame].right - animation.frameAreas[_frame].left + 1; - height = animation.frameAreas[_frame].bottom - animation.frameAreas[_frame].top + 1; + // If we're paused, we don't advance any frames + if (_paused) + n = 0; + + // Frame position after n frames + uint16 frame = (_frame + n) % animation.frameCount; + + width = animation.frameAreas[frame].right - animation.frameAreas[frame].left + 1; + height = animation.frameAreas[frame].bottom - animation.frameAreas[frame].top + 1; } bool ANIObject::isIn(int16 x, int16 y) const { diff --git a/engines/gob/aniobject.h b/engines/gob/aniobject.h index 3c374f7b8f..d8c8edc2b8 100644 --- a/engines/gob/aniobject.h +++ b/engines/gob/aniobject.h @@ -70,10 +70,10 @@ public: /** Return the current position. */ void getPosition(int16 &x, int16 &y) const; - /** Return the current frame position. */ - void getFramePosition(int16 &x, int16 &y) const; - /** Return the current frame size. */ - void getFrameSize(int16 &width, int16 &height) const; + /** Return the frame position after another n frames. */ + void getFramePosition(int16 &x, int16 &y, uint16 n = 0) const; + /** Return the current frame size after another n frames. */ + void getFrameSize(int16 &width, int16 &height, uint16 n = 0) const; /** Are there coordinates within the animation sprite? */ bool isIn(int16 x, int16 y) const; |