diff options
Diffstat (limited to 'examples/web/core/core_2d_camera.c')
| -rw-r--r-- | examples/web/core/core_2d_camera.c | 66 |
1 files changed, 33 insertions, 33 deletions
diff --git a/examples/web/core/core_2d_camera.c b/examples/web/core/core_2d_camera.c index 8ec209d..1ae28b0 100644 --- a/examples/web/core/core_2d_camera.c +++ b/examples/web/core/core_2d_camera.c @@ -20,14 +20,14 @@ //---------------------------------------------------------------------------------- // Global Variables Definition //---------------------------------------------------------------------------------- -int screenWidth = 800; -int screenHeight = 450; +const int screenWidth = 800; +const int screenHeight = 450; Rectangle player = { 400, 280, 40, 40 }; -Rectangle buildings[MAX_BUILDINGS]; -Color buildColors[MAX_BUILDINGS]; +Rectangle buildings[MAX_BUILDINGS] = { 0 }; +Color buildColors[MAX_BUILDINGS] = { 0 }; -Camera2D camera; +Camera2D camera = { 0 }; //---------------------------------------------------------------------------------- // Module Functions Declaration @@ -35,7 +35,7 @@ Camera2D camera; void UpdateDrawFrame(void); // Update and Draw one frame //---------------------------------------------------------------------------------- -// Main Enry Point +// Program Main Entry Point //---------------------------------------------------------------------------------- int main(void) { @@ -44,7 +44,7 @@ int main(void) InitWindow(screenWidth, screenHeight, "raylib [core] example - 2d camera"); int spacing = 0; - + for (int i = 0; i < MAX_BUILDINGS; i++) { buildings[i].width = GetRandomValue(50, 200); @@ -53,7 +53,7 @@ int main(void) buildings[i].x = -6000 + spacing; spacing += buildings[i].width; - + buildColors[i] = (Color){ GetRandomValue(200, 240), GetRandomValue(200, 240), GetRandomValue(200, 250), 255 }; } @@ -61,13 +61,13 @@ int main(void) camera.offset = (Vector2){ 0, 0 }; camera.rotation = 0.0f; camera.zoom = 1.0f; - + #if defined(PLATFORM_WEB) emscripten_set_main_loop(UpdateDrawFrame, 0, 1); #else SetTargetFPS(60); // Set our game to run at 60 frames-per-second //-------------------------------------------------------------------------------------- - + // Main game loop while (!WindowShouldClose()) // Detect window close button or ESC key { @@ -76,7 +76,7 @@ int main(void) #endif // De-Initialization - //-------------------------------------------------------------------------------------- + //-------------------------------------------------------------------------------------- CloseWindow(); // Close window and OpenGL context //-------------------------------------------------------------------------------------- @@ -100,26 +100,26 @@ void UpdateDrawFrame(void) player.x -= 2; // Player movement camera.offset.x += 2; // Camera displacement with player movement } - + // Camera target follows player camera.target = (Vector2){ player.x + 20, player.y + 20 }; - + // Camera rotation controls if (IsKeyDown(KEY_A)) camera.rotation--; else if (IsKeyDown(KEY_S)) camera.rotation++; - + // Limit camera rotation to 80 degrees (-40 to 40) - if (camera.rotation > 40) camera.rotation = 40; + if (camera.rotation > 40) camera.rotation = 40; else if (camera.rotation < -40) camera.rotation = -40; - + // Camera zoom controls camera.zoom += ((float)GetMouseWheelMove()*0.05f); - + if (camera.zoom > 3.0f) camera.zoom = 3.0f; else if (camera.zoom < 0.1f) camera.zoom = 0.1f; - + // Camera reset (zoom and rotation) - if (IsKeyPressed(KEY_R)) + if (IsKeyPressed(KEY_R)) { camera.zoom = 1.0f; camera.rotation = 0.0f; @@ -129,32 +129,32 @@ void UpdateDrawFrame(void) // Draw //---------------------------------------------------------------------------------- BeginDrawing(); - + ClearBackground(RAYWHITE); - - Begin2dMode(camera); + + BeginMode2D(camera); DrawRectangle(-6000, 320, 13000, 8000, DARKGRAY); - + for (int i = 0; i < MAX_BUILDINGS; i++) DrawRectangleRec(buildings[i], buildColors[i]); - + DrawRectangleRec(player, RED); - - DrawRectangle(camera.target.x, -500, 1, screenHeight*4, GREEN); - DrawRectangle(-500, camera.target.y, screenWidth*4, 1, GREEN); - - End2dMode(); - + + DrawLine(camera.target.x, -screenHeight*10, camera.target.x, screenHeight*10, GREEN); + DrawLine(-screenWidth*10, camera.target.y, screenWidth*10, camera.target.y, GREEN); + + EndMode2D(); + DrawText("SCREEN AREA", 640, 10, 20, RED); - + DrawRectangle(0, 0, screenWidth, 5, RED); DrawRectangle(0, 5, 5, screenHeight - 10, RED); DrawRectangle(screenWidth - 5, 5, 5, screenHeight - 10, RED); DrawRectangle(0, screenHeight - 5, screenWidth, 5, RED); - + DrawRectangle( 10, 10, 250, 113, Fade(SKYBLUE, 0.5f)); DrawRectangleLines( 10, 10, 250, 113, BLUE); - + DrawText("Free 2d camera controls:", 20, 20, 10, BLACK); DrawText("- Right/Left to move Offset", 40, 40, 10, DARKGRAY); DrawText("- Mouse Wheel to Zoom in-out", 40, 60, 10, DARKGRAY); |
