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/**
* @file world.cpp
*
* Copyright (C) 2019 Belle-Isle, Andrew <drumsetmonkey@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "world.hpp"
#include "events/world.hpp"
/*****************
* WORLD CLASS *
*****************/
/* CONSTRUCTORS */
World::World(sol::object param)
{
if (param.get_type() == sol::type::table) {
sol::table tab = param;
if (tab["Seed"] == sol::type::number) {
seed = tab["Seed"];
}
if (tab["Layers"] == sol::type::number) {
layers = tab["Layers"];
}
if (tab["Register"] == sol::type::function) {
registerMat = tab["Register"];
}
if (tab["Generate"] == sol::type::function) {
generate = tab["Generate"];
}
} else {
// TODO better logging
std::cerr << "World paramaters must be stored in a table" << std::endl;
}
// If there is a register function, we should call it here
if (registerMat != sol::nil)
registerMat(this);
// If a generate function is defined, call it
if (generate != sol::nil)
generate(this);
}
// TODO
std::tuple<unsigned int, unsigned int, unsigned int>
World::getSize()
{
//return {width, height, layers};
return {0, 0, 0};
}
/* RENDERING */
void World::generateMesh()
{
for (auto &l : drawLayers) {
// Preallocate size of vertexes
float Z = l->drawLayer;
auto to = l->texture.offset;
auto ts = l->texture.size;
float tr = 1.0f;
float w = l->texture.width/unitSize;
float h = l->texture.height/unitSize;
GLfloat mesh[36] = {0 , 0 , Z, to.x , to.y+ts.y, tr,
0+w, 0 , Z, to.x+ts.x, to.y+ts.y, tr,
0 , 0+h, Z, to.x , to.y , tr,
0+w, 0 , Z, to.x+ts.x, to.y+ts.y, tr,
0+w, 0+h, Z, to.x+ts.x, to.y , tr,
0 , 0+h, Z, to.x , to.y , tr};
glBindBuffer(GL_ARRAY_BUFFER, l->layerVBO);
glBufferData(GL_ARRAY_BUFFER,
36 * sizeof(GLfloat),
mesh,
GL_STATIC_DRAW);
meshAdd.push_back(WorldMeshUpdateEvent(l->layerVBO,
l->texture.tex,
l->normal.tex,
36));
}
}
/* SEED */
unsigned int World::getSeed()
{
return seed;
}
unsigned int World::setSeed(unsigned int s)
{
seed = s;
return seed;
}
/* PHYSICS */
double World::getHeight(double x, double y, double z)
{
(void)y;
double Y = 0.0f;
for (auto &l : solidLayers) {
if (z == l->drawLayer) {
int wx = x*unitSize;
int h = 0.0;
for (auto b : l->hitbox[wx]) {
if (b == true)
Y = h;
h++;
}
return ((Y+1)/unitSize);
}
}
return 0;
}
std::vector<std::pair<glm::vec2, glm::vec2>>
World::getIntersectingPlanes(glm::vec2 origin, glm::vec2 dest)
{
(void)origin;
(void)dest;
//glm::ivec2 worldOrigin = origin*unitSize;
//glm::ivec2 worldDest = dest*unitSize;
return std::vector<std::pair<glm::vec2, glm::vec2>>();
}
glm::vec3 World::collide(glm::vec3 &start, glm::vec3 &end, Physics &phys)
{
(void)start;
(void)end;
(void)phys;
for (auto &l : solidLayers) {
if (end.z == l->drawLayer) {
glm::vec2 len = end-start;
glm::vec2 dir = glm::normalize(len);
float step = 1.0f/unitSize;
// TODO move this
glm::vec2 pos = start;
for (float i = 0; i < len.length(); i+=step) {
pos += dir;
if (dir.x > 0.0f) {
// Moving to the right
//glm::vec2 origin = pos + phys.corners[1]; // bottom right
//glm::vec2 orDir = glm::vec2(0, 1);
} else if (dir.x < 0.0f) {
// Moving to the left
}
if (dir.y > 0.0f) {
// Moving upwards
} else if (dir.y < 0.0f) {
// Moving downwards
}
}
}
}
return glm::vec3(0);
}
/*********
* NEW *
*********/
void World::registerLayer(float z, sol::object obj)
{
if (obj.get_type() == sol::type::table) {
sol::table tab = obj;
SolidLayer s(z, tab);
solidLayers.push_back(std::make_shared<SolidLayer>(s));
drawLayers.push_back(std::make_shared<Layer>(s));
} else {
throw std::string("Layer must receive a table");
}
generateMesh();
}
void World::registerDecoLayer(float z, sol::object obj)
{
if (obj.get_type() == sol::type::table) {
sol::table tab = obj;
drawLayers.push_back(std::make_shared<Layer>(Layer(z, tab)));
} else {
throw std::string("Layer must receive a table");
}
generateMesh();
}
/******************
* WORLD SYSTEM *
******************/
World* WorldSystem::addWorld(sol::object t)
{
worlds.push_back(World(t));
return &(worlds.back());
}
void WorldSystem::configure([[maybe_unused]]entityx::EntityManager& entities,
[[maybe_unused]]entityx::EventManager& events)
{
}
void WorldSystem::update([[maybe_unused]]entityx::EntityManager& entities,
[[maybe_unused]]entityx::EventManager& events,
[[maybe_unused]]entityx::TimeDelta dt)
{
if (currentWorld == nullptr) {
currentWorld = &(worlds.front());
events.emit<WorldChangeEvent>(currentWorld);
}
for (auto &ma : currentWorld->meshAdd) {
events.emit<WorldMeshUpdateEvent>(ma);
}
currentWorld->meshAdd.clear();
}
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