added face culling

src/display.c

@@ -73,24 +73,25 @@ mat4 model, view, projection;
 mat4 scale;
 float vertices[108];
 
+// -x ; +x ; -y ; +y ; -z ; +z //
 void init_vertices() {
     vertices[0] = -0.5f; vertices[1] = -0.5f; vertices[2] = -0.5f;
     vertices[3] = -0.5f; vertices[4] =  0.5f; vertices[5] = -0.5f;
     vertices[6] = -0.5f; vertices[7] =  0.5f; vertices[8] =  0.5f;
     vertices[9] = -0.5f; vertices[10] = -0.5f; vertices[11] = -0.5f;
-    vertices[12] = -0.5f; vertices[13] = -0.5f; vertices[14] =  0.5f;
+    vertices[12] = -0.5f; vertices[13] =  0.5f; vertices[14] =  0.5f;
-    vertices[15] = -0.5f; vertices[16] =  0.5f; vertices[17] =  0.5f;
+    vertices[15] = -0.5f; vertices[16] = -0.5f; vertices[17] =  0.5f;
 
     vertices[18] =  0.5f; vertices[19] = -0.5f; vertices[20] = -0.5f;
-    vertices[21] =  0.5f; vertices[22] =  0.5f; vertices[23] = -0.5f;
+    vertices[21] =  0.5f; vertices[22] =  0.5f; vertices[23] =  0.5f;
-    vertices[24] =  0.5f; vertices[25] =  0.5f; vertices[26] =  0.5f;
+    vertices[24] =  0.5f; vertices[25] =  0.5f; vertices[26] = -0.5f;
     vertices[27] =  0.5f; vertices[28] = -0.5f; vertices[29] = -0.5f;
     vertices[30] =  0.5f; vertices[31] = -0.5f; vertices[32] =  0.5f;
     vertices[33] =  0.5f; vertices[34] =  0.5f; vertices[35] =  0.5f;
 
     vertices[36] = -0.5f; vertices[37] = -0.5f; vertices[38] = -0.5f;
-    vertices[39] =  0.5f; vertices[40] = -0.5f; vertices[41] = -0.5f;
+    vertices[39] =  0.5f; vertices[40] = -0.5f; vertices[41] =  0.5f;
-    vertices[42] =  0.5f; vertices[43] = -0.5f; vertices[44] =  0.5f;
+    vertices[42] =  0.5f; vertices[43] = -0.5f; vertices[44] = -0.5f;
     vertices[45] = -0.5f; vertices[46] = -0.5f; vertices[47] = -0.5f;
     vertices[48] = -0.5f; vertices[49] = -0.5f; vertices[50] =  0.5f;
     vertices[51] =  0.5f; vertices[52] = -0.5f; vertices[53] =  0.5f;
@@ -99,19 +100,19 @@ void init_vertices() {
     vertices[57] =  0.5f; vertices[58] =  0.5f; vertices[59] = -0.5f;
     vertices[60] =  0.5f; vertices[61] =  0.5f; vertices[62] =  0.5f;
     vertices[63] = -0.5f; vertices[64] =  0.5f; vertices[65] = -0.5f;
-    vertices[66] = -0.5f; vertices[67] =  0.5f; vertices[68] =  0.5f;
+    vertices[66] =  0.5f; vertices[67] =  0.5f; vertices[68] =  0.5f;
-    vertices[69] =  0.5f; vertices[70] =  0.5f; vertices[71] =  0.5f;
+    vertices[69] = -0.5f; vertices[70] =  0.5f; vertices[71] =  0.5f;
 
     vertices[72] = -0.5f; vertices[73] = -0.5f; vertices[74] = -0.5f;
     vertices[75] =  0.5f; vertices[76] = -0.5f; vertices[77] = -0.5f;
     vertices[78] =  0.5f; vertices[79] =  0.5f; vertices[80] = -0.5f;
     vertices[81] = -0.5f; vertices[82] = -0.5f; vertices[83] = -0.5f;
-    vertices[84] = -0.5f; vertices[85] =  0.5f; vertices[86] = -0.5f;
+    vertices[84] =  0.5f; vertices[85] =  0.5f; vertices[86] = -0.5f;
-    vertices[87] =  0.5f; vertices[88] =  0.5f; vertices[89] = -0.5f;
+    vertices[87] = -0.5f; vertices[88] =  0.5f; vertices[89] = -0.5f;
 
     vertices[90] = -0.5f; vertices[91] = -0.5f; vertices[92] =  0.5f;
-    vertices[93] =  0.5f; vertices[94] = -0.5f; vertices[95] =  0.5f;
+    vertices[93] =  0.5f; vertices[94] =  0.5f; vertices[95] =  0.5f;
-    vertices[96] =  0.5f; vertices[97] =  0.5f; vertices[98] =  0.5f;
+    vertices[96] =  0.5f; vertices[97] = -0.5f; vertices[98] =  0.5f;
     vertices[99] = -0.5f; vertices[100] = -0.5f; vertices[101] =  0.5f;
     vertices[102] = -0.5f; vertices[103] =  0.5f; vertices[104] =  0.5f;
     vertices[105] =  0.5f; vertices[106] =  0.5f; vertices[107] =  0.5f;
@@ -138,6 +139,7 @@ void gl_renderCube(unsigned int shaderProgram, unsigned int fragmentShader, unsi
 }
 
 void gl_renderAll(unsigned int shaderProgram, unsigned int fragmentShader, unsigned int VAO, unsigned int VBO, room* rtd, double offx, double offy, double offz) {
+    if(rtd != NULL) {
         for(int k = 0; k < rtd->map_size; k++) {
             gl_renderCube(shaderProgram, fragmentShader, VAO, VBO, rtd->map[k], offx, offy, offz);
         }
@@ -148,6 +150,15 @@ void gl_renderAll(unsigned int shaderProgram, unsigned int fragmentShader, unsig
             gl_renderCube(shaderProgram, fragmentShader, VAO, VBO, rtd->ents[k].pos, offx, offy, offz);
         }
     }
+}
+
+void gl_renderNearbyChunks(unsigned int shaderProgram, unsigned int fragmentShader, unsigned int VAO, unsigned int VBO, int render_distance) {
+    for(int w = -render_distance; w <= render_distance; w++) {
+        for(int h = -render_distance; h <= render_distance; h++) {
+            gl_renderAll(shaderProgram, fragmentShader, VAO, VBO, hashtbl_find_opt(visited, player_chx+w, player_chy+h), (2.0*room_width)*w, 0.0, (2.0*room_depth)*h);
+        }
+    }
+}
 
 vec3 dir0;
 vec3 direction;

src/display.h

@@ -3,6 +3,7 @@
 
 void gl_renderCube(unsigned int shaderProgram, unsigned int fragmentShader, unsigned int VAO, unsigned int VBO, cube_0* c, double offx, double offy, double offz);
 void gl_renderAll(unsigned int shaderProgram, unsigned int fragmentShader, unsigned int VAO, unsigned int VBO, room* rtd, double offx, double offy, double offz);
+void gl_renderNearbyChunks(unsigned int shaderProgram, unsigned int fragmentShader, unsigned int VAO, unsigned int VBO, int render_distance);
 
 void gl_initRender(unsigned int shaderProgram, unsigned int fragmentShader, unsigned int VAO, unsigned int VBO);
 void init_vertices();

src/main.c

@@ -140,6 +140,8 @@ int main_alt() {
     }
 
     glEnable(GL_DEPTH_TEST);
+    glEnable(GL_CULL_FACE);
+    glCullFace(GL_FRONT); 
     glDepthFunc(GL_LESS);
 
     //printf("%f\n", glDepthRange);
@@ -227,19 +229,19 @@ int main_alt() {
         glBindVertexArray(VAO);
         glBindBuffer(GL_ARRAY_BUFFER, VBO);
         gl_initRender(shaderProgram, shaderProgram, VAO, VBO);
-        gl_renderAll(shaderProgram, shaderProgram, VAO, VBO, current_room, 0.0, 0.0, 0.0);
+        //gl_renderAll(shaderProgram, shaderProgram, VAO, VBO, current_room, 0.0, 0.0, 0.0);
+        gl_renderNearbyChunks(shaderProgram, shaderProgram, VAO, VBO, 1);
         gl_renderProj(shaderProgram, shaderProgram, VAO, VBO);
 
-        //printf("01\n");
-        //fflush(stdout);
-
         // glfw: swap buffers and poll IO events (keys pressed/released, mouse moved etc.)
         // -------------------------------------------------------------------------------
         finish = clock();
         processInput(window, ((float)finish - (float)origin)/CLOCKS_PER_SEC);
+        teleport_on_edge();
         update_entities(((float)finish - (float)origin)/CLOCKS_PER_SEC);
         updateProj(((float)finish - (float)origin)/CLOCKS_PER_SEC);
-        printf("%f\n", 1.0f/(((float)origin - (float)finish)/CLOCKS_PER_SEC));
+        printf("%f\n", 1.0f/(((float)finish - (float)origin)/CLOCKS_PER_SEC));
+        //printf("%lf, %lf, %lf\n", camx, camy, camz);
 
         usleep(interval);
 

src/move.c

@@ -41,6 +41,9 @@ int fade_dmg ;
 
 bool has_changed;
 
+double room_width;
+double room_depth;
+
 void init_csts() {
     camx = 2.0;
     camy = 5.0;
@@ -50,6 +53,8 @@ void init_csts() {
     draw_type = 0;
     player_hp = 1000;
     fade_dmg = 0;
+    room_width = 16.0;
+    room_depth = 16.0;
     stop_evetything = false;
     tan_fov = tan((fov * 3.14159 / 180.0) / 2.0);
 }
@@ -83,7 +88,7 @@ bool is_colliding(float dtime) {
             player_chy = current_room->tps[k]->dest_chy;
             current_room = hashtbl_find_opt(visited, player_chx, player_chy);
             set_player_coords(old_chx, old_chy);
-            //resetProj();
+            resetProj();
             return true;
         }
     }
@@ -104,3 +109,27 @@ bool is_colliding(float dtime) {
     }
     return false;
 }
+
+void teleport_on_edge() {
+    if(camx >= room_width) {
+        camx -= 2.0*room_width;
+        player_chx += 1;
+        current_room = hashtbl_find_opt(visited, player_chx, player_chy);
+        resetProj();
+    } else if(camx <= -room_width) {
+        camx += 2.0*room_width;
+        player_chx -= 1;
+        current_room = hashtbl_find_opt(visited, player_chx, player_chy);
+        resetProj();
+    } else if(camz >= room_depth) {
+        camz -= 2.0*room_depth;
+        player_chy += 1;
+        current_room = hashtbl_find_opt(visited, player_chx, player_chy);
+        resetProj();
+    } else if(camz <= -room_depth) {
+        camz += 2.0*room_depth;
+        player_chy -= 1;
+        current_room = hashtbl_find_opt(visited, player_chx, player_chy);
+        resetProj();
+    }
+}

src/move.h

@@ -4,4 +4,6 @@
 void init_csts();
 bool is_colliding(float dtime);
 
+void teleport_on_edge();
+
 #endif

src/structure.h

@@ -110,8 +110,9 @@ extern int player_hp ;
 extern int fade_dmg ;
 
 extern bool stop_evetything ;
-
+extern double room_width ;
-extern double shrink_distance ;
+// no height yet (requires a rewrite oh hashtbl)
+extern double room_depth ;
 
 // ---------------------------------------------------------------------------------------------------- //
 extern double sensitivity ;