static void init_textures(void)
{
int i;
glGenTextures(NUM_TYPES, &scene.typeTextures[0]);
for(i = 22; i < NUM_TYPES; ++i)
{
if(scene.typeImages[i] != NULL)
{
int glFormat = GL_RGB;
if(bitmap_bytesPerPixel(scene.typeImages[i]) == 4)
glFormat = GL_RGBA;
glBindTexture(GL_TEXTURE_2D, scene.typeTextures[i]);
gluBuild2DMipmaps(
GL_TEXTURE_2D, // the current 2D texture
glFormat, //internal format for texture
bitmap_width(scene.typeImages[i]), // size in s coor
bitmap_height(scene.typeImages[i]), // size in t coord
glFormat, // incoming data format; should match internal
GL_UNSIGNED_BYTE, // type of incoming data
bitmap_pixels(scene.typeImages[i]) // pointer to the data
);
glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexImage2D(GL_TEXTURE_2D, 0, glFormat,
bitmap_width(scene.typeImages[i]), bitmap_height(scene.typeImages[i]),
0, glFormat, GL_UNSIGNED_BYTE, bitmap_pixels(scene.typeImages[i]));
}
}
}
// ------- Begin of function SnowInfo::draw_at ------//
void SnowInfo::draw_at(short absX, short absY)
{
//----------- calculate absolute positions ------------//
int absX1 = absX + offset_x;
int absY1 = absY + offset_y;
//----------- use fast method for non-gate square
short bitmapWidth = bitmap_width();
short bitmapHeight = bitmap_height();
int absX2 = absX1 + bitmapWidth - 1;
int absY2 = absY1 + bitmapHeight - 1;
//-------- check if the firm is within the view area --------//
int x1 = absX1 - World::view_top_x;
if( x1 <= -bitmapWidth || x1 >= ZOOM_WIDTH ) // out of the view area, not even a slight part of it appears in the view area
return;
int y1 = absY1 - World::view_top_y;
if( y1 <= -bitmapHeight || y1 >= ZOOM_HEIGHT )
return;
//------- decide which approach to use for displaying -----//
int x2 = absX2 - World::view_top_x;
int y2 = absY2 - World::view_top_y;
//---- only portion of the sprite is inside the view area ------//
if( x1 < 0 || x2 >= ZOOM_WIDTH || y1 < 0 || y2 >= ZOOM_HEIGHT )
{
// no put_bitmap_area_remap
vga_back.put_bitmap_area_trans_decompress( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr,
MAX(0,x1)-x1, MAX(0,y1)-y1, MIN(ZOOM_WIDTH-1,x2)-x1, MIN(ZOOM_HEIGHT-1,y2)-y1);
}
else
//---- the whole sprite is inside the view area ------//
{
vga_back.put_bitmap_trans_decompress( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr);
}
}
void bitmap_draw(bitmap_t* bitmap, short* buffer, unsigned int x, unsigned int y)
{
if (bitmap == NULL)
{
return;
}
int width = bitmap_width(bitmap);
int height = bitmap_height(bitmap);
if (!video_check_bounds(x, y))
{
return;
}
int i;
int screen_location = y + height - 1;
short* buffer_position = (short*) buffer + screen_location * video_width() + x;
short* bitmap_position = bitmap->bitmapData;
for (i = 0; i < height; i++)
{
memcpy((char*) buffer_position, (char*) bitmap_position, width << 1);
if (width % 2 == 0)
{
bitmap_position += width;
}
else
{
bitmap_position += width + 1;
}
buffer_position -= video_width();
}
}
//------- Begin of function WallInfo::draw_at -----------//
//
// Draw the wall on the zoom map, given the exact pixel position to put
// the bitmap.
//
// <int> absBaseX, absBaseY - the absolute base (center-bottom) coordination
// of the building.
//
// Draw the current plant on the map
//
void WallInfo::draw_at(int absBaseX, int absBaseY, char *remapTbl)
{
//-------- check if the wall is within the view area --------//
int x1 = absBaseX - World::view_top_x;
int x2 = x1 + bitmap_width() -1;
if( x2 < 0 || x1 >= ZOOM_WIDTH ) // out of the view area, not even a slight part of it appears in the view area
return;
int y1 = absBaseY - World::view_top_y;
int y2 = y1 + bitmap_height() -1;
if( y2 < 0 || y1 >= ZOOM_HEIGHT )
return;
//------- decide which approach to use for displaying -----//
//---- only portion of the sprite is inside the view area ------//
if( x1 < 0 || x2 >= ZOOM_WIDTH || y1 < 0 || y2 >= ZOOM_HEIGHT )
{
// no put_bitmap_area_remap
if(is_trans())
{
if( remapTbl)
vga_back.put_bitmap_area_trans_remap( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr,
max(0,x1)-x1, max(0,y1)-y1, min(ZOOM_WIDTH-1,x2)-x1, min(ZOOM_HEIGHT-1,y2)-y1,
remapTbl);
else
vga_back.put_bitmap_area_trans( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr,
max(0,x1)-x1, max(0,y1)-y1, min(ZOOM_WIDTH-1,x2)-x1, min(ZOOM_HEIGHT-1,y2)-y1);
}
else
{
if( remapTbl)
vga_back.put_bitmap_area_remap( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr,
max(0,x1)-x1, max(0,y1)-y1, min(ZOOM_WIDTH-1,x2)-x1, min(ZOOM_HEIGHT-1,y2)-y1,
remapTbl);
else
vga_back.put_bitmap_area( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr,
max(0,x1)-x1, max(0,y1)-y1, min(ZOOM_WIDTH-1,x2)-x1, min(ZOOM_HEIGHT-1,y2)-y1);
}
}
//---- the whole sprite is inside the view area ------//
else
{
if(is_trans() )
{
if( remapTbl)
vga_back.put_bitmap_trans_remap( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr, remapTbl);
else
vga_back.put_bitmap_trans( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr);
}
else
{
if( remapTbl)
vga_back.put_bitmap_remap( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr, remapTbl );
else
vga_back.put_bitmap( x1+ZOOM_X1, y1+ZOOM_Y1, bitmap_ptr);
}
}
}
