#include "Body.hpp"
+#include "CreatureCreatureCollision.hpp"
#include "Orbit.hpp"
#include "Planet.hpp"
#include "Resource.hpp"
#include "TileType.hpp"
#include "../app/Assets.hpp"
+#include "../creature/Composition.hpp"
#include "../creature/Creature.hpp"
#include "../graphics/Viewport.hpp"
#include "../math/const.hpp"
+#include "../math/geometry.hpp"
#include "../math/OctaveNoise.hpp"
#include "../math/SimplexNoise.hpp"
#include <glm/gtx/io.hpp>
#include <glm/gtx/transform.hpp>
-using blobs::G;
-using blobs::PI_2p0;
-
using std::sin;
using std::cos;
using std::pow;
}
Body::~Body() {
- for (creature::Creature *c : creatures) {
- delete c;
- }
}
void Body::SetSimulation(Simulation &s) noexcept {
double Body::OrbitalPeriod() const noexcept {
if (parent) {
- return PI_2p0 * sqrt(pow(orbit.SemiMajorAxis(), 3) / (G * (parent->Mass() + Mass())));
+ return PI * 2.0 * sqrt(pow(orbit.SemiMajorAxis(), 3) / (G * (parent->Mass() + Mass())));
} else {
return 0.0;
}
if (std::abs(angular) < std::numeric_limits<double>::epsilon()) {
return std::numeric_limits<double>::infinity();
} else {
- return PI_2p0 * Inertia() / angular;
+ return PI * 2.0 * Inertia() / angular;
}
}
return m;
}
+namespace {
+std::vector<creature::Creature *> ccache;
+std::vector<CreatureCreatureCollision> collisions;
+}
+
void Body::Tick(double dt) {
rotation += dt * AngularMomentum() / Inertia();
Cache();
- for (creature::Creature *c : Creatures()) {
+ ccache = Creatures();
+ for (creature::Creature *c : ccache) {
c->Tick(dt);
}
+ // first remove creatures so they don't collide
+ for (auto c = Creatures().begin(); c != Creatures().end();) {
+ if ((*c)->Removable()) {
+ (*c)->Removed();
+ c = Creatures().erase(c);
+ } else {
+ ++c;
+ }
+ }
+ CheckCollision();
}
void Body::Cache() noexcept {
if (parent) {
orbital =
- orbit.Matrix(PI_2p0 * (GetSimulation().Time() / OrbitalPeriod()))
+ orbit.Matrix(PI * 2.0 * (GetSimulation().Time() / OrbitalPeriod()))
* glm::eulerAngleXY(axis_tilt.x, axis_tilt.y);
inverse_orbital =
glm::eulerAngleYX(-axis_tilt.y, -axis_tilt.x)
- * orbit.InverseMatrix(PI_2p0 * (GetSimulation().Time() / OrbitalPeriod()));
+ * orbit.InverseMatrix(PI * 2.0 * (GetSimulation().Time() / OrbitalPeriod()));
} else {
orbital = glm::eulerAngleXY(axis_tilt.x, axis_tilt.y);
inverse_orbital = glm::eulerAngleYX(-axis_tilt.y, -axis_tilt.x);
* glm::eulerAngleY(-rotation);
}
+void Body::CheckCollision() noexcept {
+ if (Creatures().size() < 2) return;
+ collisions.clear();
+ auto end = Creatures().end();
+ for (auto i = Creatures().begin(); i != end; ++i) {
+ math::AABB i_box((*i)->CollisionBox());
+ glm::dmat4 i_mat((*i)->CollisionTransform());
+ for (auto j = (i + 1); j != end; ++j) {
+ glm::dvec3 diff((*i)->GetSituation().Position() - (*j)->GetSituation().Position());
+ double max_dist = ((*i)->Size() + (*j)->Size()) * 1.74;
+ if (glm::length2(diff) > max_dist * max_dist) continue;
+ math::AABB j_box((*j)->CollisionBox());
+ glm::dmat4 j_mat((*j)->CollisionTransform());
+ glm::dvec3 normal;
+ double depth;
+ if (Intersect(i_box, i_mat, j_box, j_mat, normal, depth)) {
+ collisions.push_back({ **i, **j, normal, depth });
+ }
+ }
+ }
+ for (auto &c : collisions) {
+ c.A().GetSituation().Move(c.Normal() * (c.Depth() * -0.5));
+ c.B().GetSituation().Move(c.Normal() * (c.Depth() * 0.5));
+ c.A().GetSituation().Accelerate(c.Normal() * -glm::dot(c.Normal(), c.AVel()));
+ c.B().GetSituation().Accelerate(c.Normal() * -glm::dot(c.Normal(), c.BVel()));
+ // TODO: notify participants so they can be annoyed
+ }
+}
+
void Body::AddCreature(creature::Creature *c) {
creatures.push_back(c);
}
}
+CreatureCreatureCollision::~CreatureCreatureCollision() {
+}
+
+const glm::dvec3 &CreatureCreatureCollision::APos() const noexcept {
+ return a->GetSituation().Position();
+}
+
+const glm::dvec3 &CreatureCreatureCollision::AVel() const noexcept {
+ return a->GetSituation().Velocity();
+}
+
+const glm::dvec3 &CreatureCreatureCollision::BPos() const noexcept {
+ return b->GetSituation().Position();
+}
+
+const glm::dvec3 &CreatureCreatureCollision::BVel() const noexcept {
+ return b->GetSituation().Velocity();
+}
+
+
Orbit::Orbit()
: sma(1.0)
, ecc(0.0)
for (int i = 0; i < 100; ++i) {
double dE = (E - e * sin(E) - M) / (1 - e * cos(E));
E -= dE;
- if (abs(dE) < 1.0e-6) break;
+ if (std::abs(dE) < 1.0e-6) break;
}
return E;
}
Planet::~Planet() {
}
-const TileType &Planet::TypeAt(int srf, int x, int y) const {
- return GetSimulation().TileTypes()[TileAt(srf, x, y).type];
+namespace {
+/// map p onto cube, s gives the surface, u and v the position in [-1,1]
+void cubemap(const glm::dvec3 &p, int &s, double &u, double &v) noexcept {
+ const glm::dvec3 p_abs(glm::abs(p));
+ const glm::bvec3 p_pos(glm::greaterThan(p, glm::dvec3(0.0)));
+ double max_axis = 0.0;
+
+ if (p_pos.x && p_abs.x >= p_abs.y && p_abs.x >= p_abs.z) {
+ max_axis = p_abs.x;
+ u = p.y;
+ v = p.z;
+ s = 1;
+ }
+ if (!p_pos.x && p_abs.x >= p_abs.y && p_abs.x >= p_abs.z) {
+ max_axis = p_abs.x;
+ u = -p.y;
+ v = -p.z;
+ s = 4;
+ }
+ if (p_pos.y && p_abs.y >= p_abs.x && p_abs.y >= p_abs.z) {
+ max_axis = p_abs.y;
+ u = p.z;
+ v = p.x;
+ s = 2;
+ }
+ if (!p_pos.y && p_abs.y >= p_abs.x && p_abs.y >= p_abs.z) {
+ max_axis = p_abs.y;
+ u = -p.z;
+ v = -p.x;
+ s = 5;
+ }
+ if (p_pos.z && p_abs.z >= p_abs.x && p_abs.z >= p_abs.y) {
+ max_axis = p_abs.z;
+ u = p.x;
+ v = p.y;
+ s = 0;
+ }
+ if (!p_pos.z && p_abs.z >= p_abs.x && p_abs.z >= p_abs.y) {
+ max_axis = p_abs.z;
+ u = -p.x;
+ v = -p.y;
+ s = 3;
+ }
+ u /= max_axis;
+ v /= max_axis;
+}
+/// get p from cube, s being surface, u and v the position in [-1,1],
+/// gives a vector from the center to the surface
+glm::dvec3 cubeunmap(int s, double u, double v) {
+ switch (s) {
+ default:
+ case 0: return glm::dvec3(u, v, 1.0); // +Z
+ case 1: return glm::dvec3(1.0, u, v); // +X
+ case 2: return glm::dvec3(v, 1.0, u); // +Y
+ case 3: return glm::dvec3(-u, -v, -1.0); // -Z
+ case 4: return glm::dvec3(-1.0, -u, -v); // -X
+ case 5: return glm::dvec3(-v, -1.0, -u); // -Y
+ };
+}
+}
+
+Tile &Planet::TileAt(const glm::dvec3 &p) noexcept {
+ int srf = 0;
+ double u = 0.0;
+ double v = 0.0;
+ cubemap(p, srf, u, v);
+ int x = glm::clamp(int(u * Radius() + Radius()), 0, sidelength - 1);
+ int y = glm::clamp(int(v * Radius() + Radius()), 0, sidelength - 1);
+ return TileAt(srf, x, y);
+}
+
+const Tile &Planet::TileAt(const glm::dvec3 &p) const noexcept {
+ int srf = 0;
+ double u = 0.0;
+ double v = 0.0;
+ cubemap(p, srf, u, v);
+ int x = glm::clamp(int(u * Radius() + Radius()), 0, sidelength - 1);
+ int y = glm::clamp(int(v * Radius() + Radius()), 0, sidelength - 1);
+ return TileAt(srf, x, y);
+}
+
+const TileType &Planet::TileTypeAt(const glm::dvec3 &p) const noexcept {
+ return GetSimulation().TileTypes()[TileAt(p).type];
}
-glm::ivec2 Planet::SurfacePosition(int srf, const glm::dvec3 &pos) const noexcept {
- return glm::ivec2(
- PositionToTile(pos[(srf + 0) % 3]),
- PositionToTile(pos[(srf + 1) % 3]));
+Tile &Planet::TileAt(int surface, int x, int y) noexcept {
+ return tiles[IndexOf(surface, x, y)];
}
-double Planet::SurfaceElevation(int srf, const glm::dvec3 &pos) const noexcept {
- return srf < 3
- ? pos[(srf + 2) % 3] - Radius()
- : -pos[(srf + 2) % 3] - Radius();
+const Tile &Planet::TileAt(int surface, int x, int y) const noexcept {
+ return tiles[IndexOf(surface, x, y)];
+}
+
+const TileType &Planet::TypeAt(int srf, int x, int y) const noexcept {
+ return GetSimulation().TileTypes()[TileAt(srf, x, y).type];
}
glm::dvec3 Planet::TileCenter(int srf, int x, int y, double e) const noexcept {
- glm::dvec3 center(0.0f);
- center[(srf + 0) % 3] = x + 0.5 - Radius();
- center[(srf + 1) % 3] = y + 0.5 - Radius();
- center[(srf + 2) % 3] = srf < 3 ? (Radius() + e) : -(Radius() + e);
- return center;
+ double u = (double(x) - Radius() + 0.5) / Radius();
+ double v = (double(y) - Radius() + 0.5) / Radius();
+ return glm::normalize(cubeunmap(srf, u, v)) * (Radius() + e);
}
void Planet::BuildVAO(const Set<TileType> &ts) {
vao->BindAttributes();
vao->EnableAttribute(0);
vao->EnableAttribute(1);
+ vao->EnableAttribute(2);
vao->AttributePointer<glm::vec3>(0, false, offsetof(Attributes, position));
- vao->AttributePointer<glm::vec3>(1, false, offsetof(Attributes, tex_coord));
+ vao->AttributePointer<glm::vec3>(1, false, offsetof(Attributes, normal));
+ vao->AttributePointer<glm::vec3>(2, false, offsetof(Attributes, tex_coord));
vao->ReserveAttributes(TilesTotal() * 4, GL_STATIC_DRAW);
{
auto attrib = vao->MapAttributes(GL_WRITE_ONLY);
for (int index = 0, surface = 0; surface < 6; ++surface) {
for (int y = 0; y < sidelength; ++y) {
for (int x = 0; x < sidelength; ++x, ++index) {
+ glm::vec3 pos[4];
+ pos[0][(surface + 0) % 3] = float(x + 0) - offset;
+ pos[0][(surface + 1) % 3] = float(y + 0) - offset;
+ pos[0][(surface + 2) % 3] = offset;
+ pos[1][(surface + 0) % 3] = float(x + 0) - offset;
+ pos[1][(surface + 1) % 3] = float(y + 1) - offset;
+ pos[1][(surface + 2) % 3] = offset;
+ pos[2][(surface + 0) % 3] = float(x + 1) - offset;
+ pos[2][(surface + 1) % 3] = float(y + 0) - offset;
+ pos[2][(surface + 2) % 3] = offset;
+ pos[3][(surface + 0) % 3] = float(x + 1) - offset;
+ pos[3][(surface + 1) % 3] = float(y + 1) - offset;
+ pos[3][(surface + 2) % 3] = offset;
+
float tex = ts[TileAt(surface, x, y).type].texture;
- const float tex_u_begin = surface < 3 ? 1.0f : 0.0f;
- const float tex_u_end = surface < 3 ? 0.0f : 1.0f;
- attrib[4 * index + 0].position[(surface + 0) % 3] = x + 0 - offset;
- attrib[4 * index + 0].position[(surface + 1) % 3] = y + 0 - offset;
- attrib[4 * index + 0].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
- attrib[4 * index + 0].tex_coord[0] = tex_u_begin;
- attrib[4 * index + 0].tex_coord[1] = 1.0f;
+ const float tex_v_begin = surface < 3 ? 1.0f : 0.0f;
+ const float tex_v_end = surface < 3 ? 0.0f : 1.0f;
+
+ attrib[4 * index + 0].position = glm::normalize(pos[0]) * (surface < 3 ? offset : -offset);
+ attrib[4 * index + 0].normal = pos[0];
+ attrib[4 * index + 0].tex_coord[0] = 0.0f;
+ attrib[4 * index + 0].tex_coord[1] = tex_v_begin;
attrib[4 * index + 0].tex_coord[2] = tex;
- attrib[4 * index + 1].position[(surface + 0) % 3] = x + 0 - offset;
- attrib[4 * index + 1].position[(surface + 1) % 3] = y + 1 - offset;
- attrib[4 * index + 1].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
- attrib[4 * index + 1].tex_coord[0] = tex_u_end;
- attrib[4 * index + 1].tex_coord[1] = 1.0f;
+ attrib[4 * index + 1].position = glm::normalize(pos[1]) * (surface < 3 ? offset : -offset);
+ attrib[4 * index + 1].normal = pos[1];
+ attrib[4 * index + 1].tex_coord[0] = 0.0f;
+ attrib[4 * index + 1].tex_coord[1] = tex_v_end;
attrib[4 * index + 1].tex_coord[2] = tex;
- attrib[4 * index + 2].position[(surface + 0) % 3] = x + 1 - offset;
- attrib[4 * index + 2].position[(surface + 1) % 3] = y + 0 - offset;
- attrib[4 * index + 2].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
- attrib[4 * index + 2].tex_coord[0] = tex_u_begin;
- attrib[4 * index + 2].tex_coord[1] = 0.0f;
+ attrib[4 * index + 2].position = glm::normalize(pos[2]) * (surface < 3 ? offset : -offset);
+ attrib[4 * index + 2].normal = pos[2];
+ attrib[4 * index + 2].tex_coord[0] = 1.0f;
+ attrib[4 * index + 2].tex_coord[1] = tex_v_begin;
attrib[4 * index + 2].tex_coord[2] = tex;
- attrib[4 * index + 3].position[(surface + 0) % 3] = x + 1 - offset;
- attrib[4 * index + 3].position[(surface + 1) % 3] = y + 1 - offset;
- attrib[4 * index + 3].position[(surface + 2) % 3] = surface < 3 ? offset : -offset;
- attrib[4 * index + 3].tex_coord[0] = tex_u_end;
- attrib[4 * index + 3].tex_coord[1] = 0.0f;
+ attrib[4 * index + 3].position = glm::normalize(pos[3]) * (surface < 3 ? offset : -offset);
+ attrib[4 * index + 3].normal = pos[3];
+ attrib[4 * index + 3].tex_coord[0] = 1.0f;
+ attrib[4 * index + 3].tex_coord[1] = tex_v_end;
attrib[4 * index + 3].tex_coord[2] = tex;
}
}
if (!vao) return;
vao->Bind();
- const glm::mat4 &MV = assets.shaders.planet_surface.MV();
- assets.shaders.planet_surface.SetNormal(glm::vec3(MV * glm::vec4(0.0f, 0.0f, 1.0f, 0.0f)));
- vao->DrawTriangles(TilesPerSurface() * 6, TilesPerSurface() * 6 * 0);
- assets.shaders.planet_surface.SetNormal(glm::vec3(MV * glm::vec4(1.0f, 0.0f, 0.0f, 0.0f)));
- vao->DrawTriangles(TilesPerSurface() * 6, TilesPerSurface() * 6 * 1);
- assets.shaders.planet_surface.SetNormal(glm::vec3(MV * glm::vec4(0.0f, 1.0f, 0.0f, 0.0f)));
- vao->DrawTriangles(TilesPerSurface() * 6, TilesPerSurface() * 6 * 2);
- assets.shaders.planet_surface.SetNormal(glm::vec3(MV * glm::vec4(0.0f, 0.0f, -1.0f, 0.0f)));
- vao->DrawTriangles(TilesPerSurface() * 6, TilesPerSurface() * 6 * 3);
- assets.shaders.planet_surface.SetNormal(glm::vec3(MV * glm::vec4(-1.0f, 0.0f, 0.0f, 0.0f)));
- vao->DrawTriangles(TilesPerSurface() * 6, TilesPerSurface() * 6 * 4);
- assets.shaders.planet_surface.SetNormal(glm::vec3(MV * glm::vec4(0.0f, -1.0f, 0.0f, 0.0f)));
- vao->DrawTriangles(TilesPerSurface() * 6, TilesPerSurface() * 6 * 5);
+ vao->DrawTriangles(TilesTotal() * 6);
}
}
float elevation = math::OctaveNoise(
elevation_gen,
- to_tile / p.Radius(),
+ glm::vec3(to_tile / p.Radius()),
3, // octaves
0.5, // persistence
5 / p.Radius(), // frequency
);
float variation = math::OctaveNoise(
variation_gen,
- to_tile / p.Radius(),
+ glm::vec3(to_tile / p.Radius()),
3, // octaves
0.5, // persistence
16 / p.Radius(), // frequency
return yield;
}
+std::vector<TileType::Yield>::const_iterator TileType::FindBestResource(const creature::Composition &comp) const {
+ auto best = resources.cend();
+ double best_value = 0.0;
+ for (auto yield = resources.cbegin(); yield != resources.cend(); ++yield) {
+ double value = comp.Get(yield->resource);
+ if (value > best_value) {
+ best = yield;
+ best_value = value;
+ }
+ }
+ return best;
+}
+
}
}
projects / blobs.git / blobdiff