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authorbonmas14 <bonmas14@gmail.com>2025-09-20 22:28:15 +0300
committerbonmas14 <bonmas14@gmail.com>2025-09-20 22:28:15 +0300
commitcdda4c4182c9ee068567529715e4a5c68a8efb58 (patch)
tree38a63f62a64018a2d35fc33354f8589fd33b7514 /deps/raylib/examples/shapes/shapes_following_eyes.c
downloadc_wizard-cdda4c4182c9ee068567529715e4a5c68a8efb58.tar.gz
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+/*******************************************************************************************
+*
+* raylib [shapes] example - following eyes
+*
+* Example originally created with raylib 2.5, last time updated with raylib 2.5
+*
+* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+* BSD-like license that allows static linking with closed source software
+*
+* Copyright (c) 2013-2024 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#include <math.h> // Required for: atan2f()
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+ // Initialization
+ //--------------------------------------------------------------------------------------
+ const int screenWidth = 800;
+ const int screenHeight = 450;
+
+ InitWindow(screenWidth, screenHeight, "raylib [shapes] example - following eyes");
+
+ Vector2 scleraLeftPosition = { GetScreenWidth()/2.0f - 100.0f, GetScreenHeight()/2.0f };
+ Vector2 scleraRightPosition = { GetScreenWidth()/2.0f + 100.0f, GetScreenHeight()/2.0f };
+ float scleraRadius = 80;
+
+ Vector2 irisLeftPosition = { GetScreenWidth()/2.0f - 100.0f, GetScreenHeight()/2.0f };
+ Vector2 irisRightPosition = { GetScreenWidth()/2.0f + 100.0f, GetScreenHeight()/2.0f };
+ float irisRadius = 24;
+
+ float angle = 0.0f;
+ float dx = 0.0f, dy = 0.0f, dxx = 0.0f, dyy = 0.0f;
+
+ 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
+ //----------------------------------------------------------------------------------
+ irisLeftPosition = GetMousePosition();
+ irisRightPosition = GetMousePosition();
+
+ // Check not inside the left eye sclera
+ if (!CheckCollisionPointCircle(irisLeftPosition, scleraLeftPosition, scleraRadius - irisRadius))
+ {
+ dx = irisLeftPosition.x - scleraLeftPosition.x;
+ dy = irisLeftPosition.y - scleraLeftPosition.y;
+
+ angle = atan2f(dy, dx);
+
+ dxx = (scleraRadius - irisRadius)*cosf(angle);
+ dyy = (scleraRadius - irisRadius)*sinf(angle);
+
+ irisLeftPosition.x = scleraLeftPosition.x + dxx;
+ irisLeftPosition.y = scleraLeftPosition.y + dyy;
+ }
+
+ // Check not inside the right eye sclera
+ if (!CheckCollisionPointCircle(irisRightPosition, scleraRightPosition, scleraRadius - irisRadius))
+ {
+ dx = irisRightPosition.x - scleraRightPosition.x;
+ dy = irisRightPosition.y - scleraRightPosition.y;
+
+ angle = atan2f(dy, dx);
+
+ dxx = (scleraRadius - irisRadius)*cosf(angle);
+ dyy = (scleraRadius - irisRadius)*sinf(angle);
+
+ irisRightPosition.x = scleraRightPosition.x + dxx;
+ irisRightPosition.y = scleraRightPosition.y + dyy;
+ }
+ //----------------------------------------------------------------------------------
+
+ // Draw
+ //----------------------------------------------------------------------------------
+ BeginDrawing();
+
+ ClearBackground(RAYWHITE);
+
+ DrawCircleV(scleraLeftPosition, scleraRadius, LIGHTGRAY);
+ DrawCircleV(irisLeftPosition, irisRadius, BROWN);
+ DrawCircleV(irisLeftPosition, 10, BLACK);
+
+ DrawCircleV(scleraRightPosition, scleraRadius, LIGHTGRAY);
+ DrawCircleV(irisRightPosition, irisRadius, DARKGREEN);
+ DrawCircleV(irisRightPosition, 10, BLACK);
+
+ DrawFPS(10, 10);
+
+ EndDrawing();
+ //----------------------------------------------------------------------------------
+ }
+
+ // De-Initialization
+ //--------------------------------------------------------------------------------------
+ CloseWindow(); // Close window and OpenGL context
+ //--------------------------------------------------------------------------------------
+
+ return 0;
+} \ No newline at end of file