From 379ec224fbe7259cc67dbf7842c293f92e3bac9a Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Thu, 25 Mar 2021 07:07:55 -0400
Subject: collision: Add circle-circle functions

Also fix missing #include and mark db_pt_in_rect() pure.
---
(limited to 'src/collision.h')

diff --git a/src/collision.h b/src/collision.h
index 022cf78..58cd95e 100644
--- a/src/collision.h
+++ b/src/collision.h
@@ -22,6 +22,10 @@
 
 #include <SDL.h>
 
-int db_pt_in_rect(int x, int y, SDL_Rect *rect);
+int db_pt_in_rect(int x, int y, SDL_Rect *rect) __attribute__((__pure__));
+int db_col_cir_cir(int x1, int y1, int r1, int x2, int y2, int r2)
+	__attribute__((__const__));
+int db_col_pt_cir_cir(int x1, int y1, int r1, int x2, int y2, int r2,
+		int *col_x, int *col_y);
 
 #endif  /* DB_COLLISION_H_ */
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