build-time config option for VR mode

[vrtris] / src / game.c

diff --git a/src/game.c b/src/game.c
index 68f6a23..eba4a23 100644 (file)
--- a/src/game.c
+++ b/src/game.c
@@ -1,5 +1,7 @@
 #include <assert.h>
+#ifdef BUILD_VR
 #include <goatvr.h>
+#endif
 #include <cgmath/cgmath.h>
 #include "opengl.h"
 #include "game.h"
@@ -12,7 +14,9 @@
 static void calc_framerate(void);
 static void print_framerate(void);
 
+#ifdef BUILD_VR
 static int should_swap;
+#endif
 static unsigned long framerate;
 
 
@@ -30,6 +34,7 @@ int game_init(int argc, char **argv)
                return -1;
        }
 
+#ifdef BUILD_VR
        if(opt.flags & OPT_VR) {
                if(goatvr_init() == -1) {
                        return -1;
@@ -40,6 +45,7 @@ int game_init(int argc, char **argv)
                goatvr_startvr();
                should_swap = goatvr_should_swap();
        }
+#endif /* BUILD_VR */
 
        glEnable(GL_DEPTH_TEST);
        glEnable(GL_CULL_FACE);
@@ -51,9 +57,11 @@ int game_init(int argc, char **argv)
 
 void game_cleanup()
 {
+#ifdef BUILD_VR
        if(opt.flags & OPT_VR) {
                goatvr_shutdown();
        }
+#endif
        cleanup_screens();
 }
 
@@ -65,13 +73,14 @@ static void update(float dt)
 void game_display(void)
 {
        static long prev_msec;
-       int i;
        float dt = (float)(time_msec - prev_msec) / 1000.0f;
        prev_msec = time_msec;
 
        update(dt);
 
+#ifdef BUILD_VR
        if(opt.flags & OPT_VR) {
+               int i;
                goatvr_draw_start();
                glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
@@ -98,7 +107,9 @@ void game_display(void)
                        game_swap_buffers();
                }
 
-       } else {
+       } else
+#endif /* BUILD_VR */
+       {
                /* non-VR mode */
                glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
@@ -125,7 +136,9 @@ void game_display(void)
 void game_reshape(int x, int y)
 {
        glViewport(0, 0, x, y);
+#ifdef BUILD_VR
        goatvr_set_fb_size(x, y, 1.0f);
+#endif
 
        reshape_screens(x, y);
 }
@@ -149,9 +162,11 @@ void game_keyboard(int key, int pressed)
                        break;
 
                case KEY_HOME:
+#ifdef BUILD_VR
                        if(opt.flags & OPT_VR) {
                                goatvr_recenter();
                        }
+#endif
                        break;
 
                default: