Add nice mountens

inc/BackGround.hpp

@@ -13,8 +13,7 @@ public:
 private:
   void starts();
   void moon();
-  void mounten();
-  void drawMounten(int line, int varience, Color color);
+  void mounten(size_t mountenSegments, float scale, int min, int max, Color color);
 
   int size = 0;
   Texture2D texShapes = {1, 1, 1, 1, 7};
@@ -27,8 +26,7 @@ private:
   Color moonColor = {240, 240, 190, 255};
   int minSizeOfMoon = 40;
   int maxSizeOfMoon = 60;
+  int maxYPosOfMoon = 600;
 
   Color mountenColor = {28, 28, 38, 255};
-  size_t mountenDataCap = 20;
-  std::vector<float> mountenData;
 };

src/BackGround.cpp

@@ -3,13 +3,13 @@
 
 #include "raylib.h"
 #include "rlgl.h"
+#include "raymath.h"
 #include "external/stb_perlin.h"
 
 // Public
 void BackGround::init(int size)
 {
   this->size = size;
-  mountenData.assign(mountenDataCap, 0);
 }
 
 void BackGround::newGen()
@@ -17,7 +17,9 @@ void BackGround::newGen()
   ClearBackground(backGroundColor);
   starts();
   moon();
-  mounten();
+  mounten(20, 0.3, 550, 650, mountenColor);
+  mounten(21, 0.3, 650, 730, ColorLerp(mountenColor, BLACK, 0.1f));
+  mounten(23, 0.3, 730, 780, ColorLerp(mountenColor, BLACK, 0.3f));
 }
 
 void BackGround::starts()
@@ -66,58 +68,46 @@ void BackGround::moon()
   DrawCircle(xpos, ypos, r, moonColor);
 }
 
-void BackGround::mounten()
+void BackGround::mounten(size_t mountenSegments, float scale, int min, int max, Color color)
 {
-  int len = 20;
+  // get random offset in the perlin noise
   int offsetX = GetRandomValue(20, 1000);
   int offsetY = GetRandomValue(20, 1000);
-  float sc = (4 / (float)len);
 
-  for (size_t i = 0; i < mountenData.size(); i++)
-  {
-    float nx = (float)(i + offsetX) * sc;
-    float p = stb_perlin_fbm_noise3(nx, offsetY, 1.0f, 2.0f, 0.5f, 6);
-    if (p < -1.0f)
-      p = -1.0f;
-    if (p > 1.0f)
-      p = 1.0f;
-
-    // mountenData[i] = (p + 1.0f) / 2.0f;
-    mountenData[i] = p;
-  }
-  drawMounten(600, 100, mountenColor);
-}
-
-void BackGround::drawMounten(int line, int varience, Color color)
-{
   int x = 0;
-  int diff = size / (mountenData.size() - 1);
+  int diff = size / (mountenSegments - 1);
+
+  float nx = (float)offsetX * scale;
+  float p = stb_perlin_fbm_noise3(nx, offsetY, 1.0f, 2.0f, 0.5f, 6);
+  p = (p + 1.0f) / 2.0f;
+  int y = Lerp(min, max, p);
 
   rlSetTexture(texShapes.id);
   rlBegin(RL_QUADS);
   rlNormal3f(0.0f, 0.0f, 1.0f);
   rlColor4ub(color.r, color.g, color.b, color.a);
 
-  int pervY = line + (mountenData[0] * varience);
-
-  for (size_t i = 1; i <= mountenData.size(); i++)
+  for (size_t i = 1; i <= mountenSegments; i++)
   {
     // topLeft
     rlTexCoord2f(0, 0);
-    rlVertex2f(x, pervY);
+    rlVertex2f(x, y);
     // bottomLeft
     rlTexCoord2f(0, 1);
     rlVertex2f(x, size);
 
+    nx = (float)(i + offsetX) * scale;
+    p = stb_perlin_fbm_noise3(nx, offsetY, 1.0f, 2.0f, 0.5f, 6);
+    p = (p + 1.0f) / 2.0f;
+    y = Lerp(min, max, p);
     x += diff;
-    pervY = line + (mountenData[i] * varience);
 
     // bottomRight
     rlTexCoord2f(1, 1);
     rlVertex2f(x, size);
     // topRight
     rlTexCoord2f(1, 0);
-    rlVertex2f(x, pervY);
+    rlVertex2f(x, y);
   }
   rlEnd();
   rlSetTexture(0);