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Diffstat (limited to 'docs/examples/web/physac/physics_shatter.c')
| -rw-r--r-- | docs/examples/web/physac/physics_shatter.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/docs/examples/web/physac/physics_shatter.c b/docs/examples/web/physac/physics_shatter.c new file mode 100644 index 00000000..7ca656fa --- /dev/null +++ b/docs/examples/web/physac/physics_shatter.c @@ -0,0 +1,147 @@ +/******************************************************************************************* +* +* 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 $(RAYLIB_DIR)\raylib\raylib_icon -static -lraylib -lpthread +* -lglfw3 -lopengl32 -lgdi32 -lopenal32 -lwinmm -std=c99 -Wl,--subsystem,windows -Wl,-allow-multiple-definition +* +* Copyright (c) 2017 Victor Fisac +* +********************************************************************************************/ + +#include "raylib.h" + +#define PHYSAC_IMPLEMENTATION +#include "physac.h" + +#if defined(PLATFORM_WEB) + #include <emscripten/emscripten.h> +#endif + +//---------------------------------------------------------------------------------- +// Global Variables Definition +//---------------------------------------------------------------------------------- +int screenWidth = 800; +int screenHeight = 450; + +// Physac logo drawing position +int logoX = 0; +int logoY = 15; + +PhysicsBody body; + +//---------------------------------------------------------------------------------- +// Module Functions Declaration +//---------------------------------------------------------------------------------- +void UpdateDrawFrame(void); // Update and Draw one frame + +//---------------------------------------------------------------------------------- +// Main Enry Point +//---------------------------------------------------------------------------------- +int main() +{ + // Initialization + //-------------------------------------------------------------------------------------- + SetConfigFlags(FLAG_MSAA_4X_HINT); + InitWindow(screenWidth, screenHeight, "Physac [raylib] - Body shatter"); + + // Physac logo drawing position + logoX = screenWidth - MeasureText("Physac", 30) - 10; + + // Initialize physics and default physics bodies + InitPhysics(); + SetPhysicsGravity(0, 0); + + // Create random polygon physics body to shatter + body = CreatePhysicsBodyPolygon((Vector2){ screenWidth/2, screenHeight/2 }, GetRandomValue(80, 200), GetRandomValue(3, 8), 10); + +#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 + { + UpdateDrawFrame(); + } +#endif + + // De-Initialization + //-------------------------------------------------------------------------------------- + ClosePhysics(); // Uninitialize physics + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +} + +//---------------------------------------------------------------------------------- +// Module Functions Definition +//---------------------------------------------------------------------------------- +void UpdateDrawFrame(void) +{ + // Update + //---------------------------------------------------------------------------------- + if (IsKeyPressed('R')) // Reset physics input + { + ResetPhysics(); + + // Create random polygon physics body to shatter + body = CreatePhysicsBodyPolygon((Vector2){ screenWidth/2, screenHeight/2 }, GetRandomValue(80, 200), GetRandomValue(3, 8), 10); + } + + 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(); + //---------------------------------------------------------------------------------- +} + |
