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Diffstat (limited to 'examples/physics_forces.c')
| -rw-r--r-- | examples/physics_forces.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/examples/physics_forces.c b/examples/physics_forces.c deleted file mode 100644 index e45cb44c..00000000 --- a/examples/physics_forces.c +++ /dev/null @@ -1,193 +0,0 @@ -/******************************************************************************************* -* -* raylib [physac] example - Forces -* -* This example has been created using raylib 1.5 (www.raylib.com) -* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details) -* -* NOTE: -* Physac requires multi-threading, when InitPhysics() a second thread is created to manage -* physics calculations. To accomplish that, physac uses pthread Win32 library that can be -* found inside raylib/src/external/pthread directory. -* -* Add pthread library when compiling physac example: -* gcc -o $(NAME_PART).exe $(FILE_NAME) $(RAYLIB_DIR)\raylib_icon -L../src/external/pthread/lib \ -* -I../src -I../src/external/pthread/include -lraylib -lglfw3 -lopengl32 -lgdi32 -lpthreadGC2 -std=c99 -Wall -* -* Note that pthreadGC2.dll must be also copied to project directory! -* -* Copyright (c) 2016 Victor Fisac and Ramon Santamaria (@raysan5) -* -********************************************************************************************/ - -#include "raylib.h" - -#define PHYSAC_IMPLEMENTATION -#include "physac.h" - -#define FORCE_AMOUNT 5.0f -#define FORCE_RADIUS 150 -#define LINE_LENGTH 75 -#define TRIANGLE_LENGTH 12 - -int main() -{ - // Initialization - //-------------------------------------------------------------------------------------- - int screenWidth = 800; - int screenHeight = 450; - - InitWindow(screenWidth, screenHeight, "raylib [physac] example - forces"); - InitPhysics((Vector2){ 0.0f, -9.81f/2 }); // Initialize physics module - - // Global variables - Vector2 mousePosition; - bool isDebug = false; - - // Create rectangle physic objects - PhysicBody rectangles[3]; - for (int i = 0; i < 3; i++) - { - rectangles[i] = CreatePhysicBody((Vector2){ screenWidth/4*(i+1), (((i % 2) == 0) ? (screenHeight/3) : (screenHeight/1.5f)) }, 0.0f, (Vector2){ 50, 50 }); - rectangles[i]->rigidbody.enabled = true; // Enable physic object rigidbody behaviour - rectangles[i]->rigidbody.friction = 0.1f; - } - - // Create circles physic objects - // NOTE: when creating circle physic objects, transform.scale must be { 0, 0 } and object radius must be defined in collider.radius and use this value to draw the circle. - PhysicBody circles[3]; - for (int i = 0; i < 3; i++) - { - circles[i] = CreatePhysicBody((Vector2){ screenWidth/4*(i+1), (((i % 2) == 0) ? (screenHeight/1.5f) : (screenHeight/4)) }, 0.0f, (Vector2){ 0, 0 }); - circles[i]->rigidbody.enabled = true; // Enable physic object rigidbody behaviour - circles[i]->rigidbody.friction = 0.1f; - circles[i]->collider.type = COLLIDER_CIRCLE; - circles[i]->collider.radius = 25; - } - - // Create walls physic objects - PhysicBody leftWall = CreatePhysicBody((Vector2){ -25, screenHeight/2 }, 0.0f, (Vector2){ 50, screenHeight }); - PhysicBody rightWall = CreatePhysicBody((Vector2){ screenWidth + 25, screenHeight/2 }, 0.0f, (Vector2){ 50, screenHeight }); - PhysicBody topWall = CreatePhysicBody((Vector2){ screenWidth/2, -25 }, 0.0f, (Vector2){ screenWidth, 50 }); - PhysicBody bottomWall = CreatePhysicBody((Vector2){ screenWidth/2, screenHeight + 25 }, 0.0f, (Vector2){ screenWidth, 50 }); - - SetTargetFPS(60); - //-------------------------------------------------------------------------------------- - - // Main game loop - while (!WindowShouldClose()) // Detect window close button or ESC key - { - // Update - //---------------------------------------------------------------------------------- - - // Update mouse position value - mousePosition = GetMousePosition(); - - // Check force input - if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) ApplyForceAtPosition(mousePosition, FORCE_AMOUNT, FORCE_RADIUS); - - // Check reset input - if (IsKeyPressed('R')) - { - // Reset rectangle physic objects positions - for (int i = 0; i < 3; i++) - { - rectangles[i]->transform.position = (Vector2){ screenWidth/4*(i+1) - rectangles[i]->transform.scale.x/2, (((i % 2) == 0) ? (screenHeight/3) : (screenHeight/1.5f)) - rectangles[i]->transform.scale.y/2 }; - rectangles[i]->rigidbody.velocity =(Vector2){ 0.0f, 0.0f }; - } - - // Reset circles physic objects positions - for (int i = 0; i < 3; i++) - { - circles[i]->transform.position = (Vector2){ screenWidth/4*(i+1), (((i % 2) == 0) ? (screenHeight/1.5f) : (screenHeight/4)) }; - circles[i]->rigidbody.velocity =(Vector2){ 0.0f, 0.0f }; - } - } - - // Check debug switch input - if (IsKeyPressed('P')) isDebug = !isDebug; - //---------------------------------------------------------------------------------- - - // Draw - //---------------------------------------------------------------------------------- - BeginDrawing(); - - ClearBackground(RAYWHITE); - - // Draw rectangles - for (int i = 0; i < 3; i++) - { - // Convert transform values to rectangle data type variable - DrawRectangleRec(TransformToRectangle(rectangles[i]->transform), RED); - if (isDebug) DrawRectangleLines(rectangles[i]->collider.bounds.x, rectangles[i]->collider.bounds.y, rectangles[i]->collider.bounds.width, rectangles[i]->collider.bounds.height, GREEN); - - // Draw force radius - DrawCircleLines(mousePosition.x, mousePosition.y, FORCE_RADIUS, BLACK); - - // Draw direction lines - if (CheckCollisionPointCircle((Vector2){ rectangles[i]->transform.position.x + rectangles[i]->transform.scale.x/2, rectangles[i]->transform.position.y + rectangles[i]->transform.scale.y/2 }, mousePosition, FORCE_RADIUS)) - { - Vector2 direction = { rectangles[i]->transform.position.x + rectangles[i]->transform.scale.x/2 - mousePosition.x, rectangles[i]->transform.position.y + rectangles[i]->transform.scale.y/2 - mousePosition.y }; - float angle = atan2l(direction.y, direction.x); - - // Calculate arrow start and end positions - Vector2 startPosition = { rectangles[i]->transform.position.x + rectangles[i]->transform.scale.x/2, rectangles[i]->transform.position.y + rectangles[i]->transform.scale.y/2 }; - Vector2 endPosition = { rectangles[i]->transform.position.x + rectangles[i]->transform.scale.x/2 + (cos(angle)*LINE_LENGTH), rectangles[i]->transform.position.y + rectangles[i]->transform.scale.y/2 + (sin(angle)*LINE_LENGTH) }; - - // Draw arrow line - DrawLineV(startPosition, endPosition, BLACK); - - // Draw arrow triangle - DrawTriangleLines((Vector2){ endPosition.x - cos(angle + 90*DEG2RAD)*LINE_LENGTH/TRIANGLE_LENGTH, endPosition.y - sin(angle + 90*DEG2RAD)*LINE_LENGTH/TRIANGLE_LENGTH }, - (Vector2){ endPosition.x + cos(angle + 90*DEG2RAD)*LINE_LENGTH/TRIANGLE_LENGTH, endPosition.y + sin(angle + 90*DEG2RAD)*LINE_LENGTH/TRIANGLE_LENGTH }, - (Vector2){ endPosition.x + cos(angle)*LINE_LENGTH/TRIANGLE_LENGTH*2, endPosition.y + sin(angle)*LINE_LENGTH/TRIANGLE_LENGTH*2 }, BLACK); - } - } - - // Draw circles - for (int i = 0; i < 3; i++) - { - DrawCircleV(circles[i]->transform.position, circles[i]->collider.radius, BLUE); - if (isDebug) DrawCircleLines(circles[i]->transform.position.x, circles[i]->transform.position.y, circles[i]->collider.radius, GREEN); - - // Draw force radius - DrawCircleLines(mousePosition.x, mousePosition.y, FORCE_RADIUS, BLACK); - - // Draw direction lines - if (CheckCollisionPointCircle((Vector2){ circles[i]->transform.position.x, circles[i]->transform.position.y }, mousePosition, FORCE_RADIUS)) - { - Vector2 direction = { circles[i]->transform.position.x - mousePosition.x, circles[i]->transform.position.y - mousePosition.y }; - float angle = atan2l(direction.y, direction.x); - - // Calculate arrow start and end positions - Vector2 startPosition = { circles[i]->transform.position.x, circles[i]->transform.position.y }; - Vector2 endPosition = { circles[i]->transform.position.x + (cos(angle)*LINE_LENGTH), circles[i]->transform.position.y + (sin(angle)*LINE_LENGTH) }; - - // Draw arrow line - DrawLineV(startPosition, endPosition, BLACK); - - // Draw arrow triangle - DrawTriangleLines((Vector2){ endPosition.x - cos(angle + 90*DEG2RAD)*LINE_LENGTH/TRIANGLE_LENGTH, endPosition.y - sin(angle + 90*DEG2RAD)*LINE_LENGTH/TRIANGLE_LENGTH }, - (Vector2){ endPosition.x + cos(angle + 90*DEG2RAD)*LINE_LENGTH/TRIANGLE_LENGTH, endPosition.y + sin(angle + 90*DEG2RAD)*LINE_LENGTH/TRIANGLE_LENGTH }, - (Vector2){ endPosition.x + cos(angle)*LINE_LENGTH/TRIANGLE_LENGTH*2, endPosition.y + sin(angle)*LINE_LENGTH/TRIANGLE_LENGTH*2 }, BLACK); - } - } - - // Draw help messages - DrawText("Use LEFT MOUSE BUTTON to apply a force", screenWidth/2 - MeasureText("Use LEFT MOUSE BUTTON to apply a force", 20)/2, screenHeight*0.075f, 20, LIGHTGRAY); - DrawText("Use R to reset objects position", screenWidth/2 - MeasureText("Use R to reset objects position", 20)/2, screenHeight*0.875f, 20, GRAY); - - DrawFPS(10, 10); - - EndDrawing(); - //---------------------------------------------------------------------------------- - } - - // De-Initialization - //-------------------------------------------------------------------------------------- - ClosePhysics(); // Unitialize physics module - CloseWindow(); // Close window and OpenGL context - //-------------------------------------------------------------------------------------- - - return 0; -}
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