From 70ecfa6658fa50d9e9acb292e076c97a03154e50 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Sat, 27 Mar 2021 16:50:30 -0400
Subject: collision: s/int/double/ in circle-circle funcs

---
diff --git a/src/ball.c b/src/ball.c
index d7941b9..e37615b 100644
--- a/src/ball.c
+++ b/src/ball.c
@@ -99,8 +99,8 @@ void
 db_balls_collisions(struct db_ball *ball)
 {
 	struct db_ball *other;
-	int             col_x;
-	int             col_y;
+	double          col_x;
+	double          col_y;
 
 	/* Spinning balls shouldn't collide with any other balls */
 	if (ball->sr == 0) {
diff --git a/src/collision.c b/src/collision.c
index e17e78a..45462e5 100644
--- a/src/collision.c
+++ b/src/collision.c
@@ -64,7 +64,7 @@ db_col_cir_rect(int x, int y, int r, SDL_Rect *rect, int *col_x, int *col_y)
 }
 
 int
-db_col_cir_cir(int x1, int y1, int r1, int x2, int y2, int r2)
+db_col_cir_cir(double x1, double y1, double r1, double x2, double y2, double r2)
 {
 	return ((r1 + r2) * (r1 + r2)) >=
 		((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
@@ -76,12 +76,12 @@ db_col_cir_cir(int x1, int y1, int r1, int x2, int y2, int r2)
  * movements to find the exact point of collision.
  */
 int
-db_col_pt_cir_cir(int x1, int y1, int r1, int x2, int y2, int r2,
-		int *col_x, int *col_y)
+db_col_pt_cir_cir(double x1, double y1, double r1,
+		double x2, double y2, double r2, double *col_x, double *col_y)
 {
 	if (db_col_cir_cir(x1, y1, r1, x2, y2, r2)) {
-		*col_x = (x1 + x2) / 2;
-		*col_y = (y1 + y2) / 2;
+		*col_x = (x1 + x2) / 2.0;
+		*col_y = (y1 + y2) / 2.0;
 		return 1;
 	} else {
 		return 0;
diff --git a/src/collision.h b/src/collision.h
index 896620b..02d93e3 100644
--- a/src/collision.h
+++ b/src/collision.h
@@ -27,9 +27,9 @@ void db_closest_pt_on_rect(int x, int y, SDL_Rect *rect,
 		int *close_x, int *close_y);
 int db_col_cir_rect(int x, int y, int r, SDL_Rect *rect,
 		int *col_x, int *col_y);
-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);
+int db_col_cir_cir(double x1, double y1, double r1,
+		double x2, double y2, double r2) __attribute__((__const__));
+int db_col_pt_cir_cir(double x1, double y1, double r1,
+		double x2, double y2, double r2, double *col_x, double *col_y);
 
 #endif  /* DB_COLLISION_H_ */
--
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