Create CopperBars.c

effects/CopperBars.c

@@ -0,0 +1,112 @@
+//
+// Copper bars. An background effect. Put a title or some text in front of it.
+//
+//
+#include "raylib.h"
+#include <math.h>
+
+void copperbars(float val, int y, int height,int screenWidth,  Color col);
+static float Clamp(float value, float min, float max);
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib example.");
+ 
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    float val=0;
+    Color col=RED;
+    col.a=GetRandomValue(100,255);
+    int sw=0;
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        
+        // val is the speed of which the copperbars bounce on the screen.
+        val+=.076;
+        if(val>PI*2.0f)val=0;
+        // Every 120 frames change to a different color
+        sw++;
+        if(sw>120){
+            sw=0;
+            col=(Color){GetRandomValue(0,255),GetRandomValue(0,255),GetRandomValue(0,255),GetRandomValue(100,255)};
+            // Make sure we have a bright color.
+            if(col.r<150 && col.g<150 && col.b<150)col.r=255;
+        }
+        
+        //----------------------------------------------------------------------------------
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(BLACK);
+            //
+            // value(0..PI*2.0f)
+            // y location
+            // height(height of screen taken)
+            // width of screen
+            // Color
+            copperbars(val,0,240,screenWidth,col);    
+            
+            for(int y=-3;y<3;y++){
+            for(int x=-3;x<3;x++){
+                DrawText("COPPER BARS",x+50,y+20,90,BLACK);
+            }}
+            DrawText("COPPER BARS",50,20,90,YELLOW);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+
+
+}
+// value(0..PI*2.0f)
+// y location
+// height(height of screen taken)
+// width of screen
+// Color  
+void copperbars(float val, int y, int height, int screenWidth,  Color col){
+    // Convert the height to fit the screen.
+    height/=2.3;
+    // Draw 8 bars
+    for(int i=0;i<8;i++){
+        // Draw the top of the bar
+        for(int j=0;j<16;j++){            
+            int py=y+((sin(val)*height+height));
+            DrawRectangle(0,py+j,screenWidth,1,(Color){    Clamp((col.r/16)*j,0,255),
+                                                           Clamp((col.g/16)*j,0,255),
+                                                           Clamp((col.b/16)*j,0,255),col.a});
+        }
+        // Draw the bottom of the bar
+        for(int j=16;j>0;j--){
+            int py=y+sin(val)*height+height+15;
+            DrawRectangle(0,py+16-j,screenWidth,1,(Color){  Clamp((col.r/16)*j,0,255),
+                                                            Clamp((col.g/16)*j,0,255),
+                                                            Clamp((col.b/16)*j,0,255),col.a});
+        }
+        // Distance between the bars.
+        val+=.35;        
+    }
+}
+
+// Clamp float value
+float Clamp(float value, float min, float max)
+{
+    const float res = value < min ? min : value;
+    return res > max ? max : res;
+}