Continued with lighting

SMCode/SM2D/Light/light.frag

@@ -1,13 +1,47 @@
 #version 330
+#define PI 3.14159265359
+
+struct Light {
+	int Type;
+	vec2 Position;
+	vec4 Color;
+};
 
 in vec2 vTexture;
-
-vec4 GetRenderColor();
+in vec2 FragPos;
 
 uniform vec4 Ambient = vec4(1);
+uniform Light[24] Lights;
+uniform int LightCount;
 
 layout(location = 0) out vec4 color;
 
+vec4 GetRenderColor();
+
+vec3 calcPointLight(Light light) {
+	float dis = distance(FragPos, light.Position);
+	float intensity = 4 / 4 * PI * pow(dis, 2);
+	
+	return vec3(light.Color * intensity);
+}
+
+vec3 calcLight() {
+	vec3 addedLight = vec3(0);
+
+	for(int i = 0; i < LightCount; i++) {
+		Light light = Lights[i];
+
+		switch(light.Type) {
+			case 0:
+				addedLight += calcPointLight(light);
+				break;
+		}
+	}
+
+	return addedLight;
+}
+
 void main() {
 	color = GetRenderColor() * Ambient;
+	color += vec4(calcLight(), 1);
 }