calculate spike angle once per frame

3 files changed, 5 insertions, 3 deletions

diff --git a/src/game.c b/src/game.c
index 877385a..31ac01b 100644
--- a/src/game.c
+++ b/src/game.c
@@ -23,6 +23,8 @@ game_deinit(Game *this)
 void
 game_update(Game *this)
 {
+	extern double tick;
+	this->spike_angle = tick / 16;
 	if (this->queue_restart_scene > 0) {
 		if (--this->queue_restart_scene == 0)
 			game_restart_scene(this);
diff --git a/src/game.h b/src/game.h
index 001d467..b8dae9f 100644
--- a/src/game.h
+++ b/src/game.h
@@ -8,6 +8,7 @@ typedef struct Game {
 	bool queue_next_scene;
 	int queue_restart_scene;
 	int player_dir;
+	double spike_angle;
 	Entity entities[MAX_ENTITIES];
 } Game;
 
diff --git a/src/spike.c b/src/spike.c
index 3c5a8d3..f09537f 100644
--- a/src/spike.c
+++ b/src/spike.c
@@ -7,9 +7,8 @@ IMPL_UPDATE() {
 } IMPL_END
 
 IMPL_DRAW() {
-	const double angle = tick / 16;
-	rotrect(this->pos[0], this->pos[1], 10, 10, angle);
-	rotrect(this->pos[0], this->pos[1], 10, 10, -angle);
+	rotrect(this->pos[0], this->pos[1], 10, 10, g->spike_angle);
+	rotrect(this->pos[0], this->pos[1], 10, 10, -g->spike_angle);
 } IMPL_END
 
 IMPL_INIT(spike) {