SDL perl-SDLX::surface应用(1)

上都海奶茶馆

use SDL;
use SDLx::App;
my $app=SDLx::App->new(w=>400,h=>400,d=>32,t=>"我的第二个程序");
#画大地
$app->draw_rect([0,0,400,400],[0,0,100,255]);
#画夜空
my $sky=SDLx::Surface->new(width=>400,height=>200);
$sky->draw_rect([0,0,400,200],[0,0,0,255]);
#画月亮
$sky->draw_circle_filled([150,50],25,[255,255,0,255]);
#画星星
for (my $i = 1; $i < 50; $i++)
{
my $x=int(rand(400));
my $y=int(rand(200));
if (not ($x>125 and $x<175  and $y >25 and $y<75))
{
$sky->draw_circle_filled([$x,$y],2,[0,0,200,255]);      
}  
}
$sky->blit($app);
$app->update();
sleep(5);

　　


use SDL;
use SDLx::App;
my $app=SDLx::App->new(w=>400,h=>400,d=>32,t=>"我的第二个程序");
#画大地
$app->draw_rect([0,0,400,400],[0,100,0,255]);
#随机生成大地的麻点
for (my $i = 1; $i < 500; $i++){
$app->[int(rand(400))][200+int(rand(200))]=[10,10,10,255];
}
#画夜空
my $sky=SDLx::Surface->new(width=>400,height=>200);
$sky->draw_rect([0,0,400,200],[0,0,0,255]);
#画树
my $tree=SDLx::Surface->new(width=>400,height=>150);
for (my $i = 1; $i < 30; $i++){
$x=int(20+rand(375));
$y=int(15+rand(100));
$tree->draw_circle_filled([$x,$y],15,[0,150,0,255]);
$tree->draw_rect([$x,$y+15,2,15],[0,0,15,255]);
}
#画月亮
$sky->draw_circle_filled([150,50],25,[255,255,0,255]);
#画星星
for (my $i = 1; $i < 50; $i++)
{
my $x=int(rand(400));
my $y=int(rand(200));
if (not ($x>125 and $x<175  and $y >25 and $y<75))
{
$sky->draw_circle_filled([$x,$y],2,[0,0,200,255]);      
}  
}
$sky->blit($app);
$tree->blit($app,[0,0,400,150],[0,200,400,150]);
$app->update();
sleep(5);

　　

 
　　读取PNG图片

use SDL;
use SDLx::App;
my $app=SDLx::App->new(w=>400,h=>400,d=>32,t=>"我的第二个程序");
#画大地
$app->draw_rect([0,0,400,400],[10,80,10,255]);
#随机生成大地的麻点
for (my $i = 1; $i < 500; $i++){
$app->[int(rand(400))][200+int(rand(200))]=[10,10,10,255];
}
#画夜空
my $sky=SDLx::Surface->new(width=>400,height=>200);
$sky->draw_rect([0,0,400,200],[0,0,0,255]);
#画月亮
$sky->draw_circle_filled([150,50],25,[255,255,0,255]);
#画星星
for (my $i = 1; $i < 50; $i++)
{
my $x=int(rand(400));
my $y=int(rand(200));
if (not ($x>125 and $x<175  and $y >25 and $y<75))
{
$sky->draw_circle_filled([$x,$y],2,[0,0,200,255]);      
}  
}
$sky->blit($app);
#画树
for (my $i = 1; $i < 20; $i++){
$x=int(rand(350));
$y=150+int(rand(100));
my $tree=SDL::Image::load('tree.png');
$tree= SDLx::Surface->new(surface =>$tree);
$tree->blit($app,[0,0,100,133],[$x,$y,100,133]);
}
$app->update();
sleep(5);