From: John Tsiombikas <nuclear@member.fsf.org>
Date: Tue, 2 Oct 2018 05:43:42 +0000 (+0300)
Subject: added minimum turn option, to discretize turns in VR
X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=commitdiff_plain;h=dd5d77962633caa459b366e596295023a727b33c

added minimum turn option, to discretize turns in VR
---

diff --git a/src/app.cc b/src/app.cc
index 4c6559b..eb02663 100644
--- a/src/app.cc
+++ b/src/app.cc
@@ -64,7 +64,7 @@ static bool bnstate[8];
 static bool keystate[256];
 static bool gpad_bnstate[64];
 static Vec2 joy_move, joy_look;
-static float joy_deadzone = 0.01;
+static float joy_deadzone = 0.1;
 
 static float framerate;
 
@@ -325,7 +325,18 @@ static void update(float dt)
 		jlook_lensq -= jdeadsq;
 
 		float mag = len * len;
-		avatar.body_rot += mag * joy_look.x / len * 200.0 * dt;
+
+		if(opt.min_turn > 0.0f) {
+			static long last_turn;
+			if(len > 0.5 && time_msec - last_turn > 350) {
+				float sign = joy_look.x > 0.0f ? 1.0f : -1.0f;
+				avatar.body_rot += opt.min_turn * sign;
+				last_turn = time_msec;
+			}
+		} else {
+			avatar.body_rot += mag * joy_look.x / len * 200.0 * dt;
+		}
+
 		avatar.head_alt += mag * joy_look.y / len * 100.0 * dt;
 		if(avatar.head_alt < -90.0f) avatar.head_alt = -90.0f;
 		if(avatar.head_alt > 90.0f) avatar.head_alt = 90.0f;
diff --git a/src/opt.cc b/src/opt.cc
index 7f3d4bb..15c61cc 100644
--- a/src/opt.cc
+++ b/src/opt.cc
@@ -13,7 +13,8 @@ Options def_opt = {
 	0,		// scene file
 	true,	// music
 	true,	// reflections
-	0		// data url
+	0,		// data url
+	0.0f	// minimum turn angle
 };
 
 enum {
@@ -25,6 +26,7 @@ enum {
 	OPT_MUSIC,
 	OPT_REFLECT,
 	OPT_DATAURL,
+	OPT_MIN_TURN,
 	OPT_HELP
 };
 
@@ -38,6 +40,7 @@ static optcfg_option options[] = {
 	{'m', "music", OPT_MUSIC, "play background audio"},
 	{'r', "reflect", OPT_REFLECT, "render reflections"},
 	{0, "url", OPT_DATAURL, "data URL"},
+	{0, "minturn", OPT_MIN_TURN, "minimum turn angle"},
 	{'h', "help", OPT_HELP, "print usage and exit"},
 	OPTCFG_OPTIONS_END
 };
@@ -116,6 +119,19 @@ static int opt_handler(optcfg *oc, int optid, void *cls)
 		opt.data_url = strdup(optcfg_next_value(oc));
 		break;
 
+	case OPT_MIN_TURN:
+		{
+			int deg;
+			char *valstr = optcfg_next_value(oc);
+
+			if(!valstr || sscanf(valstr, "%d", &deg) != 1) {
+				fprintf(stderr, "minimum turn must be a number >= 0 in degrees\n");
+				return -1;
+			}
+			opt.min_turn = deg;
+		}
+		break;
+
 	case OPT_HELP:
 		printf("Usage: demo [options]\nOptions:\n");
 		optcfg_print_options(oc);
diff --git a/src/opt.h b/src/opt.h
index 68a87ab..458dba0 100644
--- a/src/opt.h
+++ b/src/opt.h
@@ -9,6 +9,7 @@ struct Options {
 	bool music;
 	bool reflect;
 	const char *data_url;
+	float min_turn;
 };
 
 extern Options opt, def_opt;
diff --git a/tools/dlldepends b/tools/dlldepends
index 0535dcc..b303f77 100755
--- a/tools/dlldepends
+++ b/tools/dlldepends
@@ -22,4 +22,9 @@ depends() {
 	done
 }
 
-depends demo.exe | sort | uniq
+file=demo.exe
+if [ -n "$1" ]; then
+	file=$1
+fi
+
+depends $file | sort | uniq