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engines/ags/plugins/ags_blend/ags_blend.h

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+/* 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 3 of the License, or
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef AGS_PLUGINS_AGS_BLEND_AGS_BLEND_H
+#define AGS_PLUGINS_AGS_BLEND_AGS_BLEND_H
+
+#include "ags/plugins/ags_plugin.h"
+
+namespace AGS3 {
+namespace Plugins {
+namespace AGSBlend {
+
+/**
+ * Author: Steven Poulton
+ * Description: An AGS Plugin to allow true Alpha Blending
+ */
+class AGSBlend : public PluginBase {
+	SCRIPT_HASH(AGSBlend)
+private:
+	/**
+	 * Gets the alpha value at coords x,y
+	 */
+	void GetAlpha(ScriptMethodParams &params);
+
+	/**
+	 * Sets the alpha value at coords x,y
+	 */
+	void PutAlpha(ScriptMethodParams &params);
+
+	/**
+	 * Translates index from a 2D array to a 1D array
+	 */
+	int xytolocale(int x, int y, int width);
+
+	void HighPass(ScriptMethodParams &params);
+	void Blur(ScriptMethodParams &params);
+	void DrawSprite(ScriptMethodParams &params);
+	void DrawAdd(ScriptMethodParams &params);
+	void DrawAlpha(ScriptMethodParams &params);
+
+public:
+	AGSBlend() : PluginBase() {}
+	virtual ~AGSBlend() {}
+
+	const char *AGS_GetPluginName() override;
+	void AGS_EngineStartup(IAGSEngine *lpEngine) override;
+};
+
+} // namespace AGSBlend
+} // namespace Plugins
+} // namespace AGS3
+
+#endif