ZVISION: Create method to play RlfAnimations

1 files changed, 90 insertions, 0 deletions

diff --git a/engines/zvision/animation.cpp b/engines/zvision/animation.cpp
new file mode 100644
index 0000000000..7c41c23a06
--- /dev/null
+++ b/engines/zvision/animation.cpp
@@ -0,0 +1,90 @@
+/* ScummVM - Graphic Adventure Engine
+*
+* ScummVM is the legal property of its developers, whose names
+* are too numerous to list here. Please refer to the COPYRIGHT
+* file distributed with this source distribution.
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*
+*/
+
+#include "common/scummsys.h"
+
+#include "common/system.h"
+
+#include "zvision/zvision.h"
+#include "zvision/rlf_animation.h"
+
+
+namespace ZVision {
+
+void ZVision::playAnimation(RlfAnimation *animation, uint16 x, uint16 y, DisposeAfterUse::Flag disposeAfterUse) {
+	uint currentFrame = 0;
+	uint lastFrame = animation->frameCount();
+	bool skip = false;
+	uint32 frameTime = animation->frameTime();
+	uint width = animation->width();
+	uint height = animation->height();
+
+	uint16 newX = x + _workingWindow.left;
+	uint16 newY = y + _workingWindow.top;
+
+	uint32 accumulatedTime = 0;
+
+	// Only continue while the video is still playing
+	while (!shouldQuit() && !skip && currentFrame < lastFrame) {
+		_clock.update();
+		uint32 currentTime = _clock.getLastMeasuredTime();
+		accumulatedTime += _clock.getDeltaTime();
+
+		// Check for engine quit and video stop key presses
+		while (_eventMan->pollEvent(_event)) {
+			switch (_event.type) {
+			case Common::EVENT_KEYDOWN:
+				switch (_event.kbd.keycode) {
+				case Common::KEYCODE_q:
+					if (_event.kbd.hasFlags(Common::KBD_CTRL))
+						quitGame();
+					break;
+				case Common::KEYCODE_SPACE:
+					skip = true;
+					break;
+				default:
+					break;
+				}
+			default:
+				break;
+			}
+		}
+
+		if (accumulatedTime >= frameTime) {
+			accumulatedTime -= frameTime;
+
+			_system->copyRectToScreen(animation->getFrameData(currentFrame), width * sizeof(uint16), newX, newY, width, height);
+			currentFrame++;
+		}
+
+		// Always update the screen so the mouse continues to render
+		_system->updateScreen();
+
+		// Calculate the frame delay based off a desired frame time
+		int delay = _desiredFrameTime - int32(_system->getMillis() - currentTime);
+		// Ensure non-negative
+		delay = delay < 0 ? 0 : delay;
+		_system->delayMillis(delay);
+	}
+}
+
+} // End of namespace ZVision