Added spot lights

assets/shaders/blinn_phong.frag

@@ -92,6 +92,24 @@ vec4 calc_dir_light(in Light dir_light)
 	return (dir_light.intensity * (diffuse_comp + specular_comp));
 }
 
+vec4 calc_spot_light(in Light spot_light)
+{
+	vec4 color = vec4(0.0);
+	vec3 light_to_surface = vertex - spot_light.position;
+	float angle = dot(spot_light.direction, normalize(light_to_surface));
+	if(acos(angle) < spot_light.outer_angle)
+	{
+		color = calc_point_light(spot_light);
+		color *= smoothstep(cos(spot_light.outer_angle), cos(spot_light.inner_angle), angle);
+		// if(light.cast_shadow != 0)
+		// {
+		// 	float shadow_factor = calc_shadow_factor(vert_light_space.xyz / vert_light_space.w);
+		// 	color *= shadow_factor;
+		// }
+	}
+	return color;// * shadowFactor;
+}
+
 
 void main()
 {
@@ -106,6 +124,8 @@ void main()
 			light_contribution += calc_point_light(lights[i]);
 		else if(lights[i].type == LT_DIR)
 			light_contribution += calc_dir_light(lights[i]);
+		else
+			light_contribution += calc_spot_light(lights[i]);
 	}
 	
 	 frag_color = (albedo_color * vec4(0.1, 0.1, 0.1, 1.0)) +

src/game.c

@@ -151,7 +151,7 @@ void scene_setup(void)
 	/* model_set_material_param(screen_model, "diffuse_color", &color); */
 	/* model_set_material_param(screen_model, "diffuse_texture", &cam->render_tex); */
 
-	const int MAX_LIGHTS = 5;
+	const int MAX_LIGHTS = 2;
 	for(int i = 0; i < MAX_LIGHTS; i++)
 	{
 		int x = rand() % MAX_LIGHTS;
@@ -161,14 +161,14 @@ void scene_setup(void)
 		struct Transform* light_tran = entity_component_get(light_ent, C_TRANSFORM);
 		vec3 lt_pos = {x * 10, 3, z * 10};
 		transform_set_position(light_tran, &lt_pos);
-		struct Light* light_comp = entity_component_add(light_ent, C_LIGHT, LT_POINT);
+		struct Light* light_comp = entity_component_add(light_ent, C_LIGHT, LT_SPOT);
 		vec4_fill(&light_comp->color, 1.f / (float)x, 1.f / ((rand() % 10) + 1.f), 1.f / (float)z, 1);
-		light_comp->intensity = 0.2f;
+		light_comp->intensity = 1.f;
 	}
 
-	struct Entity* sun = scene_add_new("Sun", NULL);
+	/* struct Entity* sun = scene_add_new("Sun", NULL); */
-	struct Light* sun_light = entity_component_add(sun, C_LIGHT, LT_DIR);
+	/* struct Light* sun_light = entity_component_add(sun, C_LIGHT, LT_DIR); */
-	sun_light->intensity = 0.8f;
+	/* sun_light->intensity = 0.8f; */
 }
 
 void debug(float dt)