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authorAndrei Karas <akaras@inbox.ru>2011-01-02 01:48:38 +0200
committerAndrei Karas <akaras@inbox.ru>2011-01-02 02:41:24 +0200
commit3eeae12c498d1a4dbe969462d2ba841f77ee3ccb (patch)
treeff8eab35e732bc0749fc11677c8873a7b3a58704 /src/resources/ambientlayer.cpp
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Initial commit.
This code based on mana client http://www.gitorious.org/mana/mana and my private repository.
Diffstat (limited to 'src/resources/ambientlayer.cpp')
-rw-r--r--src/resources/ambientlayer.cpp126
1 files changed, 126 insertions, 0 deletions
diff --git a/src/resources/ambientlayer.cpp b/src/resources/ambientlayer.cpp
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+++ b/src/resources/ambientlayer.cpp
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+/*
+ * The Mana Client
+ * Copyright (C) 2009-2010 The Mana Developers
+ *
+ * This file is part of The Mana Client.
+ *
+ * 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
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "resources/ambientlayer.h"
+
+#include "graphics.h"
+
+#include "resources/image.h"
+#include "resources/resourcemanager.h"
+
+AmbientLayer::AmbientLayer(Image *img, float parallax,
+ float speedX, float speedY, bool keepRatio):
+ mImage(img), mParallax(parallax),
+ mPosX(0), mPosY(0),
+ mSpeedX(speedX), mSpeedY(speedY),
+ mKeepRatio(keepRatio)
+{
+ if (!mImage)
+ return;
+
+ if (keepRatio && !mImage->useOpenGL()
+ /*&& defaultScreenWidth != 0
+ && defaultScreenHeight != 0*/
+ && graphics->getWidth() != defaultScreenWidth
+ && graphics->getHeight() != defaultScreenHeight)
+ {
+ // Rescale the overlay to keep the ratio as if we were on
+ // the default resolution...
+ Image *rescaledOverlay = mImage->SDLgetScaledImage(
+ static_cast<int>(mImage->getWidth()) / defaultScreenWidth
+ * graphics->getWidth(), static_cast<int>(mImage->getHeight())
+ / defaultScreenHeight * graphics->getHeight());
+
+ if (rescaledOverlay)
+ {
+ // Replace the resource with the new one...
+ std::string idPath = mImage->getIdPath() + "_rescaled";
+ ResourceManager::getInstance()->addResource(
+ idPath, rescaledOverlay);
+ mImage = rescaledOverlay;
+ rescaledOverlay->incRef();
+ }
+ else
+ {
+ mImage->incRef();
+ }
+ }
+ else
+ {
+ mImage->incRef();
+ }
+}
+
+AmbientLayer::~AmbientLayer()
+{
+ if (mImage)
+ mImage->decRef();
+}
+
+void AmbientLayer::update(int timePassed, float dx, float dy)
+{
+ if (!mImage)
+ return;
+
+ // Self scrolling of the overlay
+ mPosX -= mSpeedX * static_cast<float>(timePassed) / 10;
+ mPosY -= mSpeedY * static_cast<float>(timePassed) / 10;
+
+ // Parallax scrolling
+ mPosX += dx * mParallax;
+ mPosY += dy * mParallax;
+
+ int imgW = mImage->getWidth();
+ int imgH = mImage->getHeight();
+
+ // Wrap values
+ while (mPosX > imgW)
+ mPosX -= static_cast<float>(imgW);
+ while (mPosX < 0)
+ mPosX += static_cast<float>(imgW);
+
+ while (mPosY > imgH)
+ mPosY -= static_cast<float>(imgH);
+ while (mPosY < 0)
+ mPosY += static_cast<float>(imgH);
+}
+
+void AmbientLayer::draw(Graphics *graphics, int x, int y)
+{
+ if (!mImage)
+ return;
+
+ if (!mImage->useOpenGL() || !mKeepRatio)
+ {
+ graphics->drawImagePattern(mImage, static_cast<int>(-mPosX),
+ static_cast<int>(-mPosY), x + static_cast<int>(mPosX),
+ y + static_cast<int>(mPosY));
+ }
+ else
+ {
+ graphics->drawRescaledImagePattern(mImage, static_cast<int>(-mPosX),
+ static_cast<int>(-mPosY), x + static_cast<int>(mPosX),
+ y + static_cast<int>(mPosY),
+ static_cast<int>(mImage->getWidth())
+ / defaultScreenWidth * graphics->getWidth(),
+ static_cast<int>(mImage->getHeight()) / defaultScreenHeight
+ * graphics->getHeight());
+ }
+}