static void generateChunk(const Vec2i &chunk_index, MeshWrapper &mesh, btCollisionWorld *collision_world, FastNoise &noise, Platform *platform, RenderContext *render_context) {
const u32 terrain_patch_size = CHUNK_SIZE+1;
const u32 vertex_count = terrain_patch_size * terrain_patch_size;
Vertex *vertices = (Vertex *)platform->alloc(sizeof(Vertex) * vertex_count);
f32 *heightmap = (f32 *)platform->alloc(sizeof(f32) * (terrain_patch_size) * (terrain_patch_size));
u32 vertex_index = 0;
f32 min_value = 0.0f;
f32 max_value = FLT_MIN;
for(u32 z = 0; z < terrain_patch_size; z++) {
for(u32 x = 0; x < terrain_patch_size; x++) {
Vertex vertex = {};
f32 y = (noise.GetValue(x, z) * 0.5f + 0.5f) * 20.0f;
if(y > max_value)
max_value = y;
heightmap[vertex_index] = y;
vertex.position = Vec3(x, y, z);
vertex.normal = Vec3::up;
vertices[vertex_index++] = vertex;
}
}
const u32 index_count = (terrain_patch_size-1) * (terrain_patch_size-1) * 6;
u16 *indices = (u16 *)platform->alloc(sizeof(u16) * index_count);
u32 index = 0;
for(u32 z = 0; z < terrain_patch_size-1; z++) {
for(u32 x = 0; x < terrain_patch_size-1; x++) {
indices[index++] = z * terrain_patch_size + x;
indices[index++] = (z+1) * terrain_patch_size + x;
indices[index++] = (z+1) * terrain_patch_size + (x+1);
indices[index++] = z * terrain_patch_size + x;
indices[index++] = (z+1) * terrain_patch_size + (x+1);
indices[index++] = z * terrain_patch_size + (x+1);
}
}
mesh = MeshWrapper();
mesh.vertex_count = vertex_count;
mesh.vertices = vertices;
mesh.index_count = index_count;
mesh.indices = indices;
mesh.vertex_buffer = render_context->createVertexBuffer(vertices, sizeof(Vertex), vertex_count);
mesh.index_buffer = render_context->createVertexBuffer(indices, sizeof(u16), index_count, RenderContext::BufferType::Index);
btHeightfieldTerrainShape *terrain_shape = new btHeightfieldTerrainShape(terrain_patch_size, terrain_patch_size, heightmap, 1.0f, -max_value, max_value, 1, PHY_FLOAT, false);
btCollisionObject *terrain_obj = new btCollisionObject();
terrain_obj->setCollisionShape(terrain_shape);
terrain_obj->setWorldTransform(btTransform(btQuaternion(0, 0, 0, 1), btVector3((terrain_patch_size-1) * 0.5f, 0.0f, (terrain_patch_size-1)*0.5f)));
collision_world->addCollisionObject(terrain_obj, btBroadphaseProxy::StaticFilter);
}
void GameState::init(Platform *platform, PlatformWindow *window, RenderContext *render_context, Assets *assets, AudioEngine *audio) {
DebugRenderQueue::init(render_context, &assets->shaders.editor);
timer = 0.0f;
exposure = 1.0f;
camera.position = Vec3(0.0f, 0.0f, -5.0f);
camera.yaw = 90.0f;
camera.beginFrame(platform, window);
npc_position = Vec3(10.0f, 0.0f, 0.0f);
f32 light_value = 300.0f;
lights[0] = {
Vec3(-10.0f, 10.0f, -10.0f),
Vec4(light_value, light_value, light_value, 10.0f),
10.0f,
};
lights[1] = {
Vec3( 10.0f, 10.0f, -10.0f),
Vec4(light_value, light_value, light_value, 1.0f),
10.0f,
};
lights[2] = {
Vec3(-10.0f, -10.0f, -10.0f),
Vec4(light_value, light_value, light_value, 1.0f),
10.0f,
};
lights[3] = {
Vec3( 10.0f, -10.0f, -10.0f),
Vec4(light_value, light_value, light_value, 1.0f),
10.0f,
};
test_sphere_mesh = MeshUtils::genSphereMesh(platform, render_context, Vec3(), 1.0f);
test_cube_mesh = MeshUtils::genCubeMesh(platform, render_context);
alpha_blend = render_context->createBlendState();
raster_state = render_context->createRasterState(false, true, true);
wireframe_raster_state = render_context->createRasterState(false, true, true, true);
depth_state = render_context->createDepthStencilState(true);
no_depth_state = render_context->createDepthStencilState(false);
no_depth_raster_state = render_context->createRasterState(false, false, true);
RenderContext::LayoutElement layout[] = {
{"POSITION", RenderContext::Format::Vec3}
};
RenderContext::LayoutElement static_layout[] = {
{"POSITION", RenderContext::Format::Vec3},
{"NORMAL", RenderContext::Format::Vec3},
{"COLOR", RenderContext::Format::Vec3},
};
RenderContext::LayoutElement textured_layout[] = {
{"POSITION", RenderContext::Format::Vec3},
{"TEXCOORD", RenderContext::Format::Vec2}
};
RenderContext::LayoutElement vertex_layout_desc[] = {
{"POSITION", RenderContext::Format::Vec3},
{"NORMAL", RenderContext::Format::Vec3},
{"TEXCOORD", RenderContext::Format::Vec2},
};
RenderContext::LayoutElement skin_vertex_layout_desc[] = {
{"POSITION", RenderContext::Format::Vec3}, //
{"NORMAL", RenderContext::Format::Vec3},
{"TEXCOORD", RenderContext::Format::Vec2},
{"BLENDWEIGHT", RenderContext::Format::Vec4}, // weights
{"BLENDINDICES", RenderContext::Format::Int4}, // weights
};
skybox_layout = render_context->createShaderLayout(layout, ArrayCount(layout), &assets->shaders.skybox);
textired_geom_layout = render_context->createShaderLayout(textured_layout, ArrayCount(textured_layout), &assets->shaders.hdr_blit);
vertex_layout = render_context->createShaderLayout(vertex_layout_desc, ArrayCount(vertex_layout_desc), &assets->shaders.geometry);
static_vertex_layout = render_context->createShaderLayout(static_layout, ArrayCount(static_layout), &assets->shaders.statics);
skin_vertex_layout = render_context->createShaderLayout(skin_vertex_layout_desc, ArrayCount(skin_vertex_layout_desc), &assets->shaders.skinned);
per_scene_constants = render_context->createShaderConstant(sizeof(PerSceneConstants));
per_object_constants = render_context->createShaderConstant(sizeof(PerObjectConstants));
hdr_blit_constants = render_context->createShaderConstant(sizeof(HdrBlitConstants));
light_constants = render_context->createShaderConstant(sizeof(ShaderLight));
ao_pass_constants = render_context->createShaderConstant(sizeof(AOPassConstants));
blur_constants = render_context->createShaderConstant(sizeof(BlurConstants));
skinned_mesh_constants = render_context->createShaderConstant(sizeof(SkinnedMeshConstants));
texture_sampler = render_context->createSampler();
wrap_texture_sampler = render_context->createSampler(true);
pn_prepass.init(render_context, camera.window_dimensions.x, camera.window_dimensions.y);
// hdr_render_texture = render_context->createRenderTexture(camera.window_dimensions.x, camera.window_dimensions.y, RenderContext::Format::Vec4, 1);
// hdr_depth_texture = render_context->createDepthStencilTexture(camera.window_dimensions.x, camera.window_dimensions.y, 1);
Vec3 kernel_noise[16];
{
std::uniform_real_distribution<float> random_floats(0.0f, 1.0f);
std::default_random_engine generator;
for(u32 i = 0; i < 64; i++) {
Vec4 sample = Vec4(
random_floats(generator) * 2.0f - 1.0f,
random_floats(generator) * 2.0f - 1.0f,
random_floats(generator),
0.0f
);
sample = Vec4(Vec3::normalize(sample.xyz), 0.0f);
sample *= random_floats(generator);
f32 scale = (f32)i / 64.0f;
scale = Math::lerp(0.1f, 1.0f, scale * scale);
sample *= scale;
ssao_pass_constant_data.kernel[i] = sample;
}
for(u32 i = 0; i < 16; i++) {
kernel_noise[i] = Vec3(
random_floats(generator) * 2.0f - 1.0f,
random_floats(generator) * 2.0f - 1.0f,
0.0f
);
}
}
ssao_pass_constant_data.kernel_radius = 1.0f;
ssao_pass_constant_data.kernel_bias = 0.0f;
ssao_pass_constant_data.kernel_size = 32;
ssao_noise_texture = render_context->createTexture2D(&kernel_noise, 4, 4, RenderContext::Format::Vec3);
blur_constants_data.blur_amount = 4;
createRenderTextures(render_context);
btDefaultCollisionConfiguration *collision_config = new btDefaultCollisionConfiguration();
btCollisionDispatcher *dispatcher = new btCollisionDispatcher(collision_config);
btBroadphaseInterface *overlapping_pair_cache = new btDbvtBroadphase();
overlapping_pair_cache->getOverlappingPairCache()->setInternalGhostPairCallback(new btGhostPairCallback());
btSequentialImpulseConstraintSolver *solver = new btSequentialImpulseConstraintSolver();
collision_world = new btCollisionWorld(dispatcher, overlapping_pair_cache, collision_config);
physics_drawer = new PhysicsDebugDrawer();
collision_world->setDebugDrawer(physics_drawer);
btStaticPlaneShape *plane = new btStaticPlaneShape(btVector3(0, 1, 0), 0.0f);
btCollisionObject *plane_obj = new btCollisionObject();
plane_obj->setCollisionShape(plane);
collision_world->addCollisionObject(plane_obj);
btCapsuleShapeZ *player_collider = new btCapsuleShapeZ(1.0f, 0.5f);
btPairCachingGhostObject *ghost_object = new btPairCachingGhostObject();
ghost_object->setWorldTransform(btTransform(btQuaternion(0, 0, 0, 1), btVector3(0, 30, 0)));
ghost_object->setCollisionFlags(btCollisionObject::CF_CHARACTER_OBJECT);
ghost_object->setCollisionShape(player_collider);
char_controller = new btKinematicCharacterController(ghost_object, player_collider, 0.5f, btVector3(0, 1, 0));
char_controller->setGravity(btVector3(0, 0, 0));
collision_world->addCollisionObject(ghost_object, btBroadphaseProxy::CharacterFilter, btBroadphaseProxy::StaticFilter|btBroadphaseProxy::DefaultFilter);
btCollisionObject *obs_obj = new btCollisionObject();
btBoxShape *obs_shape = new btBoxShape(btVector3(6.0f, 3.0f, 6.0f));
obs_obj->setCollisionShape(obs_shape);
obs_obj->setWorldTransform(btTransform(btQuaternion(0, 0, 0, 1), btVector3(0, 0, 0)));
// collision_world->addCollisionObject(obs_obj, btBroadphaseProxy::StaticFilter);
{
FastNoise noise;
noise.SetSeed(time(0));
const u32 terrain_patch_size = CHUNK_SIZE+1;
const u32 vertex_count = terrain_patch_size * terrain_patch_size;
Vertex *vertices = (Vertex *)platform->alloc(sizeof(Vertex) * vertex_count);
f32 *heightmap = (f32 *)platform->alloc(sizeof(f32) * (terrain_patch_size) * (terrain_patch_size));
u32 vertex_index = 0;
f32 min_value = 0.0f;
f32 max_value = FLT_MIN;
for(u32 z = 0; z < terrain_patch_size; z++) {
for(u32 x = 0; x < terrain_patch_size; x++) {
Vertex vertex = {};
f32 y = (noise.GetValue(x, z) * 0.5f + 0.5f) * 20.0f;
if(y > max_value)
max_value = y;
heightmap[vertex_index] = y;
vertex.position = Vec3(x, y, z);
vertex.normal = Vec3::up;
vertices[vertex_index++] = vertex;
}
}
const u32 index_count = (terrain_patch_size-1) * (terrain_patch_size-1) * 6;
u16 *indices = (u16 *)platform->alloc(sizeof(u16) * index_count);
u32 index = 0;
for(u32 z = 0; z < terrain_patch_size-1; z++) {
for(u32 x = 0; x < terrain_patch_size-1; x++) {
indices[index++] = z * terrain_patch_size + x;
indices[index++] = (z+1) * terrain_patch_size + x;
indices[index++] = (z+1) * terrain_patch_size + (x+1);
indices[index++] = z * terrain_patch_size + x;
indices[index++] = (z+1) * terrain_patch_size + (x+1);
indices[index++] = z * terrain_patch_size + (x+1);
}
}
terrain_mesh = MeshWrapper();
terrain_mesh.vertex_count = vertex_count;
terrain_mesh.vertices = vertices;
terrain_mesh.index_count = index_count;
terrain_mesh.indices = indices;
terrain_mesh.vertex_buffer = render_context->createVertexBuffer(vertices, sizeof(Vertex), vertex_count);
terrain_mesh.index_buffer = render_context->createVertexBuffer(indices, sizeof(u16), index_count, RenderContext::BufferType::Index);
btHeightfieldTerrainShape *terrain_shape = new btHeightfieldTerrainShape(terrain_patch_size, terrain_patch_size, heightmap, 1.0f, -max_value, max_value, 1, PHY_FLOAT, false);
btCollisionObject *terrain_obj = new btCollisionObject();
terrain_obj->setCollisionShape(terrain_shape);
terrain_obj->setWorldTransform(btTransform(btQuaternion(0, 0, 0, 1), btVector3((terrain_patch_size-1) * 0.5f, 0.0f, (terrain_patch_size-1)*0.5f)));
collision_world->addCollisionObject(terrain_obj, btBroadphaseProxy::StaticFilter);
}
// for(int i = 0; i < assets->static_meshes.count; i++) {
// StaticMeshData *mesh_data = &assets->static_meshes.meshes[i];
// btTriangleMesh *mesh_shape = new btTriangleMesh();
// btIndexedMesh indexed_mesh;
// indexed_mesh.m_indexType = PHY_ScalarType::PHY_SHORT;
// indexed_mesh.m_numTriangles = mesh_data->index_count;
// indexed_mesh.m_numVertices = mesh_data->vertex_count;
// indexed_mesh.m_triangleIndexStride = sizeof(u16);
// indexed_mesh.m_vertexStride = sizeof(StaticMeshVertex);
// indexed_mesh.m_vertexType = PHY_ScalarType::PHY_FLOAT;
// indexed_mesh.m_triangleIndexBase = (u8 *)mesh_data->indices;
// indexed_mesh.m_vertexBase = (u8 *)mesh_data->vertices;
// mesh_shape->addIndexedMesh(indexed_mesh, PHY_ScalarType::PHY_SHORT);
// btBvhTriangleMeshShape *shape = new btBvhTriangleMeshShape(mesh_shape, false);
// mesh_data->physics_obj = (void *)shape;
// }
// StaticMeshReference *reference = new StaticMeshReference();
// reference->index = 29;
// reference->transform = Mat4::translate(Vec3(-10.0f, 0.0f, 0.0f));
// static_mesh_references = reference;
// static_mesh_reference_count = 1;
// genStaticMeshColliders(assets);
generateMap();
char_sequence.clips.add(&assets->walking_anim);
char_sequence.clips.add(&assets->turning_anim);
}
World::World(int seed) : _seed(seed) {
FastNoise *noise = new FastNoise;
noise->SetSeed(seed);
noise->SetNoiseType(FastNoise::Simplex);
_chunks.push_back(new Chunk(noise));
}