examples

commit ca9406c1b018edf610a767c77a0d22bec8ce2bac
parent 97bf4e4f5c2f09ee6f2e843aed1b27aed306bcb0
Author: Henry Wilson <henry@henryandlizzy.uk>
Date:   Sun,  3 Apr 2022 14:17:43 +0100

gl-asteroids: Draw everything 5 times to avoid popping

Diffstat:
M
src/gl-asteroids.cpp
 | 
20
++++++++++++--------

1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/src/gl-asteroids.cpp b/src/gl-asteroids.cpp
@@ -139,16 +139,20 @@ bool is_colliding(physics const& a, physics const& b)
 
 void draw(visual const& v, physics const& p)
 {
-	glBegin(v.mode);
-
-	for (unsigned i = 0; i < v.v.size(); ++i)
+	static coord const offsets[] = {{0,0}, {2,0}, {0,2}, {-2,0}, {0,-2}};
+	for (auto offset : offsets)
 	{
-		if (i < v.c.size())
-			glColor(v.c[i]);
-		glCoord(rotate(v.v[i] * p.scale, p.rot) + p.pos);
-	}
+		glBegin(v.mode);
+
+		for (unsigned i = 0; i < v.v.size(); ++i)
+		{
+			if (i < v.c.size())
+				glColor(v.c[i]);
+			glCoord(rotate(v.v[i] * p.scale, p.rot) + p.pos + offset);
+		}
 
-	glEnd();
+		glEnd();
+	}
 }
 
 struct entity