Better gyroscope rotation

2 files changed, 25 insertions, 12 deletions

diff --git a/src/gyroscope.c b/src/gyroscope.c
index dba5d8d..980345c 100644
--- a/src/gyroscope.c
+++ b/src/gyroscope.c
@@ -3,17 +3,6 @@
 #include "assets.h"
 #include "world.h"
 
-void resetGyroscopePosition(Gyroscope * gyroscope) {
-    float width = GetScreenWidth();
-	float height = GetScreenHeight();
-
-    // Set position on screen.
-    gyroscope->position = (Vector2){
-        (width / 2.0) - (GYROSCOPE_TEXTURE_SIZE / 2.0),
-		height / 1.8
-    };
-}
-
 void initGyroscope(Gyroscope * gyroscope) {
     resetGyroscopePosition(gyroscope);
 
@@ -35,9 +24,32 @@ void closeGyroscope(Gyroscope * gyroscope) {
     UnloadRenderTexture(gyroscope->texture);
 }
 
+void resetGyroscopePosition(Gyroscope * gyroscope) {
+    float width = GetScreenWidth();
+	float height = GetScreenHeight();
+
+    // Set position on screen.
+    gyroscope->position = (Vector2){
+        (width / 2.0) - (GYROSCOPE_TEXTURE_SIZE / 2.0),
+		height / 1.8
+    };
+}
+
+void updateGyroscopeRotation(Entity * player, Gyroscope * gyroscope) {
+	// Instead of rotation the gyroscope ball we rotate the camera around it.
+	gyroscope->camera.position = Vector3Scale(
+		Vector3RotateByQuaternion((Vector3){0.0, 0.0, 1.0}, player->rotation),
+		GYROSCOPE_CAMERA_DISTANCE
+	);
+
+	gyroscope->camera.up = Vector3RotateByQuaternion((Vector3){0.0, 1.0, 0.0}, player->rotation);
+}
+
 void drawGyroscope(Game * game, Gyroscope * gyroscope) {
 	Entity * player = getEntityFromWorld(game->world, 0);
 
+	updateGyroscopeRotation(player, gyroscope);
+
 	// Get model
 	Model model = game->assets.models[GYROSCOPE_ASSET];
 
@@ -47,7 +59,6 @@ void drawGyroscope(Game * game, Gyroscope * gyroscope) {
 	BeginMode3D(gyroscope->camera);
 
 	// Set transform and draw.
-	model.transform = QuaternionToMatrix(player->rotation);
 	DrawModel(model, Vector3Zero(), 1, WHITE);
 
 	EndMode3D();
diff --git a/src/gyroscope.h b/src/gyroscope.h
index c8156cc..6a86e11 100644
--- a/src/gyroscope.h
+++ b/src/gyroscope.h
@@ -5,6 +5,7 @@
 
 #define GYROSCOPE_LINE_THICKNESS 2.0
 #define GYROSCOPE_TEXTURE_SIZE 80
+#define GYROSCOPE_CAMERA_DISTANCE 3.0
 
 // The gyroscope is rended in 3d but not in the main scene.
 // We use a render texture to get the gyroscope render onto the screen.
@@ -18,6 +19,7 @@ void initGyroscope(Gyroscope * gyroscope);
 void closeGyroscope(Gyroscope * gyroscope);
 
 void resetGyroscopePosition(Gyroscope * gyroscope);
+
 void drawGyroscope(Game * game, Gyroscope * gyroscope);
 
 #endif