* Add "less" target to view make output through less.

[matthijs/ABM2.git] / ABM2 / Amaltheia / Sprite.cpp

diff --git a/ABM2/Amaltheia/Sprite.cpp b/ABM2/Amaltheia/Sprite.cpp
new file mode 100644 (file)
index 0000000..a8c10a8
--- /dev/null
+++ b/ABM2/Amaltheia/Sprite.cpp
@@ -0,0 +1,132 @@
+/***************************************************************************
+ *   Copyright (C) 2005 by Dimitris Saougos & Filippos Papadopoulos   *
+ *   <psybases@gmail.com>                                                             *
+ *                                                                                                       *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU Library 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 Library General Public     *
+ *   License along with this program; if not, write to the                 *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include "Sprite.h"
+#include <GL/gl.h>
+
+
+Graphics *gr;
+float z_order = 1.0;
+
+
+void Sprite::glEnter2DMode()
+{
+       glPushAttrib(GL_ALL_ATTRIB_BITS);
+       
+       glDisable(GL_LIGHTING);
+       glDisable(GL_CULL_FACE);
+       glEnable(GL_DEPTH_TEST);
+       
+       glEnable(GL_TEXTURE_2D);
+
+       
+       /* This allows alpha blending of 2D textures with the scene */
+       glEnable(GL_BLEND);
+       glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+//    glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+
+       glViewport(0, 0, gr->getWidth(), gr->getHeight());
+
+       glMatrixMode(GL_PROJECTION);
+       glPushMatrix();
+       glLoadIdentity();
+
+       glOrtho(0.0, (GLdouble)gr->getWidth(), (GLdouble)gr->getHeight(), 0.0, 0.0, -2.0);
+//     gluOrtho2D(0.0, (GLdouble)gr->getWidth(), (GLdouble)gr->getHeight(), 0.0);
+       
+       glMatrixMode(GL_MODELVIEW);
+       glPushMatrix();
+       glLoadIdentity();
+//     glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
+   return;
+}
+
+
+void Sprite::glLeave2DMode()
+{
+       glMatrixMode(GL_MODELVIEW);
+       glPopMatrix();
+
+       glMatrixMode(GL_PROJECTION);
+       glPopMatrix();
+
+       glPopAttrib();
+   return;
+}
+
+Sprite::Sprite( char * filename, colour key, int tw, int th, Graphics *g)
+{
+       this->g = g;
+       tileWidth=tw;
+       tileHeight=th;
+       
+       glAlphaFunc(GL_NOTEQUAL, 0);
+               glEnable(GL_ALPHA_TEST);
+               tex = new Texture(filename, key, g);
+
+       texW = tex->getWidth();
+       texH = tex->getHeight();
+       texWFactor = (tileWidth / (float) texW);
+       texHFactor = (tileHeight / (float) texH);
+
+       return ;
+}
+
+
+Sprite::~Sprite(void)
+{
+       delete tex;
+       return ;
+}
+
+
+void Sprite::blit(int x, int y, float scalex, float scaley, int dx, int dy, colour col)
+{
+       z_order-=0.000001;
+       glEnter2DMode();
+//     glColor4ub((colour & 0x00FF0000) >> 16, (colour  & 0x0000FF00) >> 8,
+//                         (colour & 0x000000FF), (colour & 0xFF000000) >> 24);
+       glColor4f(col.r, col.g, col.b, col.a);
+
+       glBindTexture(GL_TEXTURE_2D, tex->gl_Tex);
+       glPushMatrix();
+       glTranslatef(x,y, 0);
+
+       glScalef(scalex, scaley, 1);
+       glBegin(GL_QUADS);
+               glTexCoord2f(dx*texWFactor, 1 - dy*texHFactor);
+               glVertex3f(0,0, z_order);
+
+               glTexCoord2f(dx*texWFactor,  1 - (dy + 1)*texHFactor);
+               glVertex3f(0,  tileHeight, z_order);
+
+               glTexCoord2f((dx + 1)*texWFactor,  1 - (dy + 1)*texHFactor);
+               glVertex3f( tileWidth, tileHeight, z_order);
+
+               glTexCoord2f((dx + 1)*texWFactor, 1 - dy*texHFactor);
+               glVertex3f( tileWidth, 0, z_order);
+       glEnd();
+       glPopMatrix();
+
+       glLeave2DMode();
+
+
+   return ;
+}