Create Beginners_-_cos_and_sin.c

Beginners_-_cos_and_sin.c

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+
+#include "raylib.h"
+#include <math.h> // needed for cos and sin.
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib example.");
+
+    Vector2 position;
+    position.x = screenWidth/2;
+    position.y = screenHeight/2;
+    float angle=GetRandomValue(0,359);
+ 
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        
+        // cos and sin here.
+        position.x += (float)cos(angle)*4;
+        position.y += (float)sin(angle)*4;
+        
+        if(GetRandomValue(0,100)<5)angle=GetRandomValue(0,359);
+        if(position.x>screenWidth || position.x<0 || position.y<0 || position.y>screenHeight){
+            position.x=screenWidth/2;
+            position.y=screenHeight/2;
+            }
+        
+        //----------------------------------------------------------------------------------
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+                
+
+            DrawCircle(position.x,position.y,20,RED);
+            
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+
+
+}