From 4007be29af4afb5baa12453268b0c23b21157183 Mon Sep 17 00:00:00 2001
From: codifies <nospam@antispam.com>
Date: Sat, 17 Oct 2020 21:43:42 +0100
Subject: [PATCH] added GetRandomFloat and SetGridColours

---
 src/core.c   | 11 +++++++++++
 src/models.c | 32 ++++++++++++++++++++++++--------
 src/raylib.h |  4 +++-
 3 files changed, 38 insertions(+), 9 deletions(-)

diff --git a/src/core.c b/src/core.c
index f1d7241a4..e26cb87e4 100644
--- a/src/core.c
+++ b/src/core.c
@@ -1958,6 +1958,17 @@ int GetRandomValue(int min, int max)
     return (rand()%(abs(max - min) + 1) + min);
 }
 
+float GetRandomFloat(float min, float max)
+{
+    if (min > max) {
+        float tmp = max;
+        max = min;
+        min = tmp;
+    }
+    
+    return rand()/(RAND_MAX/(max-min))+min;        
+}
+
 // Check if the file exists
 bool FileExists(const char *fileName)
 {
diff --git a/src/models.c b/src/models.c
index cfed95022..5a21062e0 100644
--- a/src/models.c
+++ b/src/models.c
@@ -652,9 +652,25 @@ void DrawRay(Ray ray, Color color)
     rlEnd();
 }
 
+
+static float GridMajor[] = { 0.5f,  0.5f,  0.5f  };
+static float GridMinor[] = { 0.75f, 0.75f, 0.75f };
+
+void SetGridColours(Color major, Color minor) 
+{
+    GridMajor[0] = major.r / 256.0;
+    GridMajor[1] = major.g / 256.0;
+    GridMajor[2] = major.b / 256.0;
+    
+    GridMinor[0] = minor.r / 256.0;
+    GridMinor[1] = minor.g / 256.0;
+    GridMinor[2] = minor.b / 256.0;
+}
+
 // Draw a grid centered at (0, 0, 0)
 void DrawGrid(int slices, float spacing)
 {
+
     int halfSlices = slices/2;
 
     if (rlCheckBufferLimit(slices*4)) rlglDraw();
@@ -664,17 +680,17 @@ void DrawGrid(int slices, float spacing)
         {
             if (i == 0)
             {
-                rlColor3f(0.5f, 0.5f, 0.5f);
-                rlColor3f(0.5f, 0.5f, 0.5f);
-                rlColor3f(0.5f, 0.5f, 0.5f);
-                rlColor3f(0.5f, 0.5f, 0.5f);
+                rlColor3f(GridMinor[0], GridMinor[1], GridMinor[2]);
+                rlColor3f(GridMinor[0], GridMinor[1], GridMinor[2]);
+                rlColor3f(GridMinor[0], GridMinor[1], GridMinor[2]);
+                rlColor3f(GridMinor[0], GridMinor[1], GridMinor[2]);
             }
             else
             {
-                rlColor3f(0.75f, 0.75f, 0.75f);
-                rlColor3f(0.75f, 0.75f, 0.75f);
-                rlColor3f(0.75f, 0.75f, 0.75f);
-                rlColor3f(0.75f, 0.75f, 0.75f);
+                rlColor3f(GridMajor[0], GridMajor[1], GridMajor[2]);
+                rlColor3f(GridMajor[0], GridMajor[1], GridMajor[2]);
+                rlColor3f(GridMajor[0], GridMajor[1], GridMajor[2]);
+                rlColor3f(GridMajor[0], GridMajor[1], GridMajor[2]);
             }
 
             rlVertex3f((float)i*spacing, 0.0f, (float)-halfSlices*spacing);
diff --git a/src/raylib.h b/src/raylib.h
index f0eef587d..8dc9f655d 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -948,6 +948,7 @@ RLAPI void SetTraceLogCallback(TraceLogCallback callback);        // Set a trace
 RLAPI void TraceLog(int logType, const char *text, ...);          // Show trace log messages (LOG_DEBUG, LOG_INFO, LOG_WARNING, LOG_ERROR)
 RLAPI void TakeScreenshot(const char *fileName);                  // Takes a screenshot of current screen (saved a .png)
 RLAPI int GetRandomValue(int min, int max);                       // Returns a random value between min and max (both included)
+RLAPI float GetRandomFloat(float min, float max);
 
 // Files management functions
 RLAPI unsigned char *LoadFileData(const char *fileName, unsigned int *bytesRead);     // Load file data as byte array (read)
@@ -1285,7 +1286,8 @@ RLAPI void DrawSphereWires(Vector3 centerPos, float radius, int rings, int slice
 RLAPI void DrawCylinder(Vector3 position, float radiusTop, float radiusBottom, float height, int slices, Color color); // Draw a cylinder/cone
 RLAPI void DrawCylinderWires(Vector3 position, float radiusTop, float radiusBottom, float height, int slices, Color color); // Draw a cylinder/cone wires
 RLAPI void DrawPlane(Vector3 centerPos, Vector2 size, Color color);                                      // Draw a plane XZ
-RLAPI void DrawRay(Ray ray, Color color);                                                                // Draw a ray line
+RLAPI void DrawRay(Ray ray, Color color);
+RLAPI void SetGridColours(Color major, Color minor);                                                                // Draw a ray line
 RLAPI void DrawGrid(int slices, float spacing);                                                          // Draw a grid (centered at (0, 0, 0))
 RLAPI void DrawGizmo(Vector3 position);                                                                  // Draw simple gizmo