1 /* ScummVM - Graphic Adventure Engine
2  *
3  * ScummVM is the legal property of its developers, whose names
4  * are too numerous to list here. Please refer to the COPYRIGHT
5  * file distributed with this source distribution.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * as published by the Free Software Foundation; either version 2
10  * of the License, or(at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20  *
21  */
22 
23 #ifndef AGS_PLUGINS_AGS_BLEND_AGS_BLEND_H
24 #define AGS_PLUGINS_AGS_BLEND_AGS_BLEND_H
25 
26 #include "ags/plugins/ags_plugin.h"
27 
28 namespace AGS3 {
29 namespace Plugins {
30 namespace AGSBlend {
31 
32 /**
33  * Author: Steven Poulton
34  * Description: An AGS Plugin to allow true Alpha Blending
35  */
36 class AGSBlend : public PluginBase {
37 	SCRIPT_HASH(AGSBlend)
38 private:
39 	/**
40 	 * Gets the alpha value at coords x,y
41 	 */
42 	void GetAlpha(ScriptMethodParams &params);
43 
44 	/**
45 	 * Sets the alpha value at coords x,y
46 	 */
47 	void PutAlpha(ScriptMethodParams &params);
48 
49 	/**
50 	 * Translates index from a 2D array to a 1D array
51 	 */
52 	int xytolocale(int x, int y, int width);
53 
54 	void HighPass(ScriptMethodParams &params);
55 	void Blur(ScriptMethodParams &params);
56 	void DrawSprite(ScriptMethodParams &params);
57 	void DrawAdd(ScriptMethodParams &params);
58 	void DrawAlpha(ScriptMethodParams &params);
59 
60 public:
AGSBlend()61 	AGSBlend() : PluginBase() {}
~AGSBlend()62 	virtual ~AGSBlend() {}
63 
64 	const char *AGS_GetPluginName() override;
65 	void AGS_EngineStartup(IAGSEngine *lpEngine) override;
66 };
67 
68 } // namespace AGSBlend
69 } // namespace Plugins
70 } // namespace AGS3
71 
72 #endif
73