Create block_part1.c

games/blockshooter/block_part1.c

@@ -0,0 +1,65 @@
+
+#include "raylib.h"
+#include <math.h>
+
+// Get our angle between two points.
+static float getangle(float x1,float y1,float x2,float y2);
+
+
+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 posx = 320;
+    float posy = 400;
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        
+        
+        //----------------------------------------------------------------------------------
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+ 
+            float x = GetMouseX()/32*32;
+            float y = GetMouseY()/32*32;
+            DrawRectangle(x,y,32,32,DARKGRAY);
+ 
+            float an = getangle(posx,posy,x,y);
+ 
+            DrawLine(posx,posy,posx+cos(an)*32,posy+sin(an)*32,DARKGRAY);
+ 
+
+            DrawText(FormatText("Angle between x1,y1,x2,y2 : %f",getangle(GetMouseX(),GetMouseY(),posx,posy)),0,0,20,DARKGRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+
+
+}
+// Return the angle from - to in float
+float getangle(float x1,float y1,float x2,float y2){
+    return (float)atan2(y2-y1, x2-x1);
+}