Minor performance boost + better input

Draw triangles in correct counter clock order, back face wasn't correct

6 files changed, 30 insertions, 24 deletions

diff --git a/shaders/fragment.glsl b/shaders/fragment.glsl
index 6222c27..c13f4a2 100644
--- a/shaders/fragment.glsl
+++ b/shaders/fragment.glsl
@@ -7,7 +7,12 @@ in vec3 frag_pos;
 in vec2 text_coord;
 uniform sampler2D block_texture;
 void main() {
-    vec3 ambient_color = vec3(0.1);
+    vec3 top_ambient = vec3(0.5);
+    vec3 ambient_dir = vec3(0.0f, 1.0f, 0.0f);
+    vec3 bottom_ambient = vec3(0.1);
+    float value = dot(normal, ambient_dir) * 0.5 + 0.3;
+    vec3 inter = mix(bottom_ambient,top_ambient,value);
+    vec3 ambient_color = inter;
     vec3 norm = normalize(normal);
     vec3 light_dir = normalize(vec3(1.0f, 2.0f, 1.0f));
     float diff = max(dot(norm, light_dir), 0.0);
diff --git a/src/block.c b/src/block.c
index 14ffa08..d03a137 100644
--- a/src/block.c
+++ b/src/block.c
@@ -46,18 +46,18 @@ void block_load_gpu(struct block* blk) {
         0.0f, 0.0f, 1.0f, // Front normal
         1.0f, 0.0f,
 
-        1.0f, 1.0f, -1.0f, // top-right (back plane)
-        0.0f, 0.0f, -1.0f, // Back normal
-        1.0f, 1.0f,
         0.0f, 1.0f, -1.0f, // top-left (back plane)
         0.0f, 0.0f, -1.0f, // Back normal
         0.0f, 1.0f,
-        0.0f, 0.0f, -1.0f, // bottom-left (back plane)
+        1.0f, 1.0f, -1.0f, // top-right (back plane)
         0.0f, 0.0f, -1.0f, // Back normal
-        0.0f, 0.0f,
+        1.0f, 1.0f,
         1.0f, 0.0f, -1.0f, // bottom-right (back plane)
         0.0f, 0.0f, -1.0f, // Back normal
         1.0f, 0.0f,
+        0.0f, 0.0f, -1.0f, // bottom-left (back plane)
+        0.0f, 0.0f, -1.0f, // Back normal
+        0.0f, 0.0f,
 
         1.0f, 1.0f, -1.0f, // top-right (back plane)
         1.0f, 0.0f, 0.0f, // Right normal
diff --git a/src/camera.c b/src/camera.c
index 18cfb33..7a23a17 100644
--- a/src/camera.c
+++ b/src/camera.c
@@ -56,7 +56,7 @@ void camera_move(struct camera *camera, enum DIRECTION move) {
         // Right hand rule - this will be on the righ (positive)
         glm_vec3_crossn(unit_direction, camera->up, unit_direction);
     }
-    float scale = 0.3f;
+    float scale = 0.2f;
     glm_vec3_scale(unit_direction, scale, unit_direction);
     glm_vec3_add(camera->position, unit_direction, camera->position);
 }
diff --git a/src/engine.c b/src/engine.c
index 5b6cf05..c5a9220 100644
--- a/src/engine.c
+++ b/src/engine.c
@@ -122,6 +122,9 @@ void engine_start(struct engine* engine) {
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
         glClearColor(0.529f, 0.808f, 0.922f, 1.0f);
         glEnable(GL_DEPTH_TEST);
+        glEnable(GL_CULL_FACE);
+        glCullFace(GL_BACK);
+        glFrontFace(GL_CCW);
         //glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
         glUseProgram(engine->shader->program);
         // Update engine managed objects
diff --git a/src/engine.h b/src/engine.h
index 3248d40..e7ffdaa 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -9,7 +9,7 @@
 // We want a square around curr_chunk, and a side of the square will be 1
 // (center chunk) + 2 * CHUNK_DISTANCE (either side of center)
 // loaded chunks = (1 + CHUNK_DISTANCE * 2)^2
-#define CHUNK_DISTANCE 2
+#define CHUNK_DISTANCE 3
 
 struct engine {
     struct window* window;
diff --git a/src/input.c b/src/input.c
index b4dde18..06f63a5 100644
--- a/src/input.c
+++ b/src/input.c
@@ -26,22 +26,20 @@ void input_handle(struct engine *engine) {
         }
         if (event.type == SDL_KEYDOWN) {
             SDL_KeyboardEvent key = event.key;
-            switch (key.keysym.sym) {
-                case SDLK_w:
-                    camera_move(engine->camera, FORWARD);
-                    break;
-                case SDLK_a:
-                    camera_move(engine->camera, LEFT);
-                    break;
-                case SDLK_s:
-                    camera_move(engine->camera, BACKWARD);
-                    break;
-                case SDLK_d:
-                    camera_move(engine->camera, RIGHT);
-                    break;
-                case SDLK_ESCAPE:
-                    engine->game_loop = 0;
-                    break;
+            if (key.keysym.sym == SDLK_w) {
+                camera_move(engine->camera, FORWARD);
+            }
+            if (key.keysym.sym == SDLK_a) {
+                camera_move(engine->camera, LEFT);
+            }
+            if (key.keysym.sym == SDLK_s) {
+                camera_move(engine->camera, BACKWARD);
+            }
+            if (key.keysym.sym == SDLK_d) {
+                camera_move(engine->camera, RIGHT);
+            }
+            if (key.keysym.sym == SDLK_ESCAPE) {
+                engine->game_loop = 0;
             }
         }
         if (event.type == SDL_MOUSEMOTION) {