fix: blank lines segmentation fault bug fixed

3 files changed, 16 insertions, 6 deletions

diff --git a/src/main.c b/src/main.c
index e6d8584..636172e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -306,14 +306,22 @@ int main(int argc, char *argv[])
     Mat4 T, S, R;
     float t, t0, dt;
     int width, height;
+    char title[1024];
     t0 = 0;
 
     glEnable(GL_DEPTH_TEST);
     while (!glfwWindowShouldClose(window)) {
         processInput(window);
-        glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
+        glClearColor(0.7f, 0.7f, 0.7f, 1.0f);
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
         glfwGetWindowSize(window, &width, &height);
+        sprintf(title, "mverse: x: %f y: %f z: %f",
+                mainCamera.front.vector[0] + mainCamera.position.vector[0],
+                mainCamera.front.vector[1] + mainCamera.position.vector[1],
+                mainCamera.front.vector[2] + mainCamera.position.vector[2]);
+        glfwSetWindowTitle(window, title);
+
+
 
         t = (float)glfwGetTime();
         dt = t - t0;
diff --git a/src/obj.c b/src/obj.c
index 200fe5c..7d65722 100644
--- a/src/obj.c
+++ b/src/obj.c
@@ -95,7 +95,7 @@ objCreate(const char *filename)
     char key[500];
     int vIndex, vtIndex, vnIndex;
     int mtlSize, mtlIndex, meshIndex;
-    vIndex = vtIndex = vnIndex = meshIndex = 0;
+    vIndex = vtIndex = vnIndex = meshIndex = mtlSize = 0;
 
     while (fgets(lineBuffer, OBJ_LINE_MAX_SIZE, fi)) {
 
@@ -107,13 +107,14 @@ objCreate(const char *filename)
         else if (!strcmp("v" , key))  readV3(lineBuffer + n, &v,  vIndex++);
 
         else if (!strcmp("mtllib", key)) mtl = readMtl(lineBuffer + n, filename, &mtlSize);
-        else if (!strcmp("usemtl", key)) {
+        else if (!strcmp("usemtl", key) && mtlSize > 0) {
             mtlIndex = useMtl (lineBuffer + n, mtl, mtlSize);
             mesh = (Mesh *)realloc(mesh, (++meshIndex + 1) * sizeof(Mesh));
             memset(mesh + meshIndex, 0, sizeof(Mesh));
             mesh[meshIndex].material = mtl[mtlIndex];
             mesh[meshIndex].indexSize = 0;
         }
+        key[0] = '\0';
     }
 
     o.mesh = mesh;
@@ -350,8 +351,8 @@ Material *
 readMtl(char *line, const char *objFile, int *size)
 {
     Material *out;
-    char buffer[OBJ_LINE_MAX_SIZE], mtlFilename[OBJ_LINE_MAX_SIZE], key[500];
-    char path[512], fileName[512];
+    char buffer[OBJ_LINE_MAX_SIZE], mtlFilename[OBJ_LINE_MAX_SIZE], key[OBJ_MAX_WORD];
+    char path[OBJ_MAX_WORD], fileName[OBJ_MAX_WORD];
     FILE *fin;
     int i, n;
 
@@ -372,6 +373,7 @@ readMtl(char *line, const char *objFile, int *size)
             else if (!strcmp(key, "illum"))  sscanf(buffer + n, "%u", &out[i - 1].illum);
             else if (!strcmp(key, "Ns"))     sscanf(buffer + n, "%f", &out[i - 1].ns);
         }
+        key[0] = '\0';
     }
 
     if (size) *size = i;
diff --git a/src/obj.h b/src/obj.h
index f15f0c8..44790a2 100644
--- a/src/obj.h
+++ b/src/obj.h
@@ -20,7 +20,7 @@
 #define __OBJ__
 
 #define OBJ_LINE_MAX_SIZE 1024
-#define OBJ_MAX_NAME 512
+#define OBJ_MAX_WORD 512
 
 typedef struct {
     float position[3];