zphysics

Getting started

pubfnbuild(b:*std.Build)void {constexe=b.addExecutable(.{... });constzphysics=b.dependency("zphysics", .{        .use_double_precision=false,        .enable_cross_platform_determinism=true,    });exe.root_module.addImport("zphysics",zphysics.module("root"));exe.linkLibrary(zphysics.artifact("joltc"));}

constzphy=@import("zphysics");pubfnmain()!void {tryzphy.init(allocator, .{});deferzphy.deinit();// Create physics systemconstphysics_system=tryzphy.PhysicsSystem.create(...// layer interfaces - please see sample application        .{            .max_bodies=1024,            .num_body_mutexes=0,            .max_body_pairs=1024,            .max_contact_constraints=1024,        },    );deferphysics_system.destroy();// Create shapeconstbody_interface=physics_system.getBodyInterfaceMut();constshape_settings=tryzphy.BoxShapeSettings.create(.{1.0,1.0,1.0 });defershape_settings.release();constshape=tryshape_settings.createShape();defershape.release();// Create bodyconstbody_id=trybody_interface.createAndAddBody(.{        .position= .{0.0,-1.0,0.0,1.0 },        .rotation= .{0.0,0.0,0.0,1.0 },        .shape=shape,        .motion_type=.dynamic,        .object_layer=object_layers.non_moving,    },.activate);deferbody_interface.removeAndDestroyBody(body_id);physics_system.optimizeBroadPhase();// Perform ray cast    {constquery=physics_system.getNarrowPhaseQuery();varresult=query.castRay(.{ .origin= .{0,10,0,1 }, .direction= .{0,-20,0,0 } }, .{});if (result.has_hit) {// result.hit.body_id// result.hit.fraction// result.hit.sub_shape_id...        }    }// Main loopwhile (...) {physics_system.update(1.0/60.0, .{});// Draw all bodiesconstbodies=physics_system.getBodiesUnsafe();for (bodies)|body| {if (!zphy.isValidBodyPointer(body))continue;constobject_to_world=object_to_world: {constposition=zm.loadArr4(body.position);constrotation=zm.loadArr4(body.rotation);varxform=zm.matFromQuat(rotation);xform[3]=position;xform[3][3]=1.0;break :object_to_worldxform;            };// Issue a draw call...        }    }}

Usage in a shared library

    const zphysics = b.dependency("zphysics", .{        .shared = true,    });