add multiple lights to shaders

2 files changed, 77 insertions, 0 deletions

diff --git a/src/light.c b/src/light.c
new file mode 100644
index 0000000..08da8e6
--- /dev/null
+++ b/src/light.c
@@ -0,0 +1,20 @@
+#include "../include/light.h"
+
+void honey_point_light_new(honey_point_light* light,
+                           float x, float y, float z,
+                           float r, float g, float b,
+                           float constant,
+                           float linear,
+                           float quadratic) {
+  light->position[0] = x;
+  light->position[1] = y;
+  light->position[2] = z;
+  
+  light->color[0] = r;
+  light->color[1] = g;
+  light->color[2] = b;
+
+  light->constant = constant;
+  light->linear = linear;
+  light->quadratic = quadratic;
+}
diff --git a/src/shader.c b/src/shader.c
index d250629..d570f52 100644
--- a/src/shader.c
+++ b/src/shader.c
@@ -164,4 +164,61 @@ void honey_shader_set_mat4(honey_shader shader,
 }
 
 /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+void honey_shader_set_point_light(honey_shader shader,
+                                  int point_light_index,
+                                  honey_point_light light) {
+  char name[HONEY_MAX_LIGHT_NAME_LENGTH];
+
+  snprintf(name,
+           HONEY_MAX_LIGHT_NAME_LENGTH,
+           "point_lights[%d].position",
+           point_light_index);
+  honey_shader_set_vec3(shader, name, light.position);
+  
+  snprintf(name,
+           HONEY_MAX_LIGHT_NAME_LENGTH,
+           "point_lights[%d].color",
+           point_light_index);
+  honey_shader_set_vec3(shader, name, light.color);
+    
+  snprintf(name,
+           HONEY_MAX_LIGHT_NAME_LENGTH,
+           "point_lights[%d].constant",
+           point_light_index);
+  honey_shader_set_float(shader, name, light.constant);
+
+  snprintf(name,
+           HONEY_MAX_LIGHT_NAME_LENGTH,
+           "point_lights[%d].linear",
+           point_light_index);
+  honey_shader_set_float(shader, name, light.linear);
+
+  snprintf(name,
+           HONEY_MAX_LIGHT_NAME_LENGTH,
+           "point_lights[%d].quadratic",
+           point_light_index);
+  honey_shader_set_float(shader, name, light.quadratic);
+}
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+void honey_shader_set_directional_light(honey_shader shader,
+                                        int directional_light_index,
+                                        honey_directional_light light) {
+  char name[HONEY_MAX_LIGHT_NAME_LENGTH];
+  
+  snprintf(name,
+           HONEY_MAX_LIGHT_NAME_LENGTH,
+           "directional_lights[%d].direction",
+           directional_light_index);
+  honey_shader_set_vec3(shader, name, light.direction);
+
+  snprintf(name,
+           HONEY_MAX_LIGHT_NAME_LENGTH,
+           "directional_lights[%d].color",
+           directional_light_index);
+  honey_shader_set_vec3(shader, name, light.color);
+}
+