From 963eeb54da9f53e2ff20f81296f5392b8ab5f62f Mon Sep 17 00:00:00 2001
From: Luke Benstead <kazade@gmail.com>
Date: Tue, 28 Aug 2018 15:55:50 +0100
Subject: [PATCH] Start work on spotlights

---
 GL/lighting.c            | 11 ++++++++++-
 samples/lerabot01/main.c | 13 +++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/GL/lighting.c b/GL/lighting.c
index b13f2a3..d52d3f1 100644
--- a/GL/lighting.c
+++ b/GL/lighting.c
@@ -125,13 +125,18 @@ void APIENTRY glLightfv(GLenum light, GLenum pname, const GLfloat *params) {
             }
         }
         break;
+        case GL_SPOT_DIRECTION: {
+            LIGHTS[idx].spot_direction[0] = params[0];
+            LIGHTS[idx].spot_direction[1] = params[1];
+            LIGHTS[idx].spot_direction[2] = params[2];
+        } break;
         case GL_CONSTANT_ATTENUATION:
         case GL_LINEAR_ATTENUATION:
         case GL_QUADRATIC_ATTENUATION:
         case GL_SPOT_CUTOFF:
-        case GL_SPOT_DIRECTION:
         case GL_SPOT_EXPONENT:
             glLightf(light, pname, *params);
+        break;
     default:
         _glKosThrowError(GL_INVALID_ENUM, __func__);
         _glKosPrintError();
@@ -156,7 +161,11 @@ void APIENTRY glLightf(GLenum light, GLenum pname, GLfloat param) {
             LIGHTS[idx].quadratic_attenuation = param;
         break;
         case GL_SPOT_EXPONENT:
+            LIGHTS[idx].spot_exponent = param;
+        break;
         case GL_SPOT_CUTOFF:
+            LIGHTS[idx].spot_cutoff = param;
+        break;
     default:
         _glKosThrowError(GL_INVALID_ENUM, __func__);
         _glKosPrintError();
diff --git a/samples/lerabot01/main.c b/samples/lerabot01/main.c
index 07333a1..4ce79b6 100644
--- a/samples/lerabot01/main.c
+++ b/samples/lerabot01/main.c
@@ -162,6 +162,19 @@ void InitGL(int Width, int Height)	        // We call this right after our OpenG
     glLightf(GL_LIGHT1, GL_CONSTANT_ATTENUATION, 1.0f);
     glLightf(GL_LIGHT1, GL_LINEAR_ATTENUATION, 0.0001);
     glLightf(GL_LIGHT1, GL_QUADRATIC_ATTENUATION, 0.00001);
+
+    GLfloat l2_pos[] = {0.0, 15.0, 1.0, 1.0};
+    GLfloat l2_dir[] = {0.0, -1.0, 0.0};
+    GLfloat l2_diff[] = {0.5, 0.5, 0.0, 1.0};
+    GLfloat l2_amb[] = {0.5, 0.5, 0.5, 1.0};
+
+    glEnable(GL_LIGHT2);
+    glLightfv(GL_LIGHT2, GL_DIFFUSE, l2_diff);
+    glLightfv(GL_LIGHT2, GL_POSITION, l2_pos);
+    glLightfv(GL_LIGHT2, GL_SPOT_DIRECTION, l2_dir);
+    glLightf(GL_LIGHT2, GL_CONSTANT_ATTENUATION, 1.0f);
+    glLightf(GL_LIGHT2, GL_LINEAR_ATTENUATION, 0.0001);
+    glLightf(GL_LIGHT2, GL_QUADRATIC_ATTENUATION, 0.00001);
 }
 
 /* The function called when our window is resized (which shouldn't happen, because we're fullscreen) */