Renamed directory: physac -> physics

Examples categories are independent from the module they use, despite in some cases module name matches category name.

1 files changed, 125 insertions, 0 deletions

diff --git a/examples/physics/physics_shatter.c b/examples/physics/physics_shatter.c
new file mode 100644
index 00000000..cbc65221
--- /dev/null
+++ b/examples/physics/physics_shatter.c
@@ -0,0 +1,125 @@
+/*******************************************************************************************
+*
+*   Physac - Body shatter
+*
+*   NOTE 1: Physac requires multi-threading, when InitPhysics() a second thread is created to manage physics calculations.
+*   NOTE 2: Physac requires static C library linkage to avoid dependency on MinGW DLL (-static -lpthread)
+*
+*   Use the following line to compile:
+*
+*   gcc -o $(NAME_PART).exe $(FILE_NAME) -s -static  /
+*       -lraylib -lpthread -lglfw3 -lopengl32 -lgdi32 -lopenal32 -lwinmm /
+*       -std=c99 -Wl,--subsystem,windows -Wl,-allow-multiple-definition
+*
+*   Copyright (c) 2016-2018 Victor Fisac
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define PHYSAC_IMPLEMENTATION
+#define PHYSAC_NO_THREADS
+#include "physac.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    SetConfigFlags(FLAG_MSAA_4X_HINT);
+    InitWindow(screenWidth, screenHeight, "Physac [raylib] - Body shatter");
+
+    // Physac logo drawing position
+    int logoX = screenWidth - MeasureText("Physac", 30) - 10;
+    int logoY = 15;
+    bool needsReset = false;
+
+    // Initialize physics and default physics bodies
+    InitPhysics();
+    SetPhysicsGravity(0, 0);
+
+    // Create random polygon physics body to shatter
+    CreatePhysicsBodyPolygon((Vector2){ screenWidth/2, screenHeight/2 }, GetRandomValue(80, 200), GetRandomValue(3, 8), 10);
+
+    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
+        RunPhysicsStep();
+
+        //----------------------------------------------------------------------------------
+        // Delay initialization of variables due to physics reset asynchronous
+        if (needsReset)
+        {
+            // Create random polygon physics body to shatter
+            CreatePhysicsBodyPolygon((Vector2){ screenWidth/2, screenHeight/2 }, GetRandomValue(80, 200), GetRandomValue(3, 8), 10);
+            needsReset = false;
+        }
+
+        if (IsKeyPressed('R'))    // Reset physics input
+        {
+            ResetPhysics();
+            needsReset = true;
+        }
+
+        if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))    // Physics shatter input
+        {
+            // Note: some values need to be stored in variables due to asynchronous changes during main thread
+            int count = GetPhysicsBodiesCount();
+            for (int i = count - 1; i >= 0; i--)
+            {
+                PhysicsBody currentBody = GetPhysicsBody(i);
+                if (currentBody != NULL) PhysicsShatter(currentBody, GetMousePosition(), 10/currentBody->inverseMass);
+            }
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(BLACK);
+
+            // Draw created physics bodies
+            int bodiesCount = GetPhysicsBodiesCount();
+            for (int i = 0; i < bodiesCount; i++)
+            {
+                PhysicsBody currentBody = GetPhysicsBody(i);
+
+                int vertexCount = GetPhysicsShapeVerticesCount(i);
+                for (int j = 0; j < vertexCount; j++)
+                {
+                    // Get physics bodies shape vertices to draw lines
+                    // Note: GetPhysicsShapeVertex() already calculates rotation transformations
+                    Vector2 vertexA = GetPhysicsShapeVertex(currentBody, j);
+
+                    int jj = (((j + 1) < vertexCount) ? (j + 1) : 0);   // Get next vertex or first to close the shape
+                    Vector2 vertexB = GetPhysicsShapeVertex(currentBody, jj);
+
+                    DrawLineV(vertexA, vertexB, GREEN);     // Draw a line between two vertex positions
+                }
+            }
+
+            DrawText("Left mouse button in polygon area to shatter body\nPress 'R' to reset example", 10, 10, 10, WHITE);
+
+            DrawText("Physac", logoX, logoY, 30, WHITE);
+            DrawText("Powered by", logoX + 50, logoY - 7, 10, WHITE);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    ClosePhysics();       // Unitialize physics
+
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}