Javidx9
5 years ago
committed by
GitHub
parent
ed896e9770
commit
07a8e9aa5e
@ -0,0 +1,372 @@ |
|||||||
|
/*
|
||||||
|
Procedural Generation: Programming The Universe |
||||||
|
"Here we go again! Year 4 begins now..." - javidx9 |
||||||
|
|
||||||
|
License (OLC-3) |
||||||
|
~~~~~~~~~~~~~~~ |
||||||
|
|
||||||
|
Copyright 2018-2020 OneLoneCoder.com |
||||||
|
|
||||||
|
Redistribution and use in source and binary forms, with or without |
||||||
|
modification, are permitted provided that the following conditions |
||||||
|
are met: |
||||||
|
|
||||||
|
1. Redistributions or derivations of source code must retain the above |
||||||
|
copyright notice, this list of conditions and the following disclaimer. |
||||||
|
|
||||||
|
2. Redistributions or derivative works in binary form must reproduce |
||||||
|
the above copyright notice. This list of conditions and the following |
||||||
|
disclaimer must be reproduced in the documentation and/or other |
||||||
|
materials provided with the distribution. |
||||||
|
|
||||||
|
3. Neither the name of the copyright holder nor the names of its |
||||||
|
contributors may be used to endorse or promote products derived |
||||||
|
from this software without specific prior written permission. |
||||||
|
|
||||||
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||||
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||||
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||||
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||||
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||||
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||||
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||||
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||||
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||||
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||||
|
|
||||||
|
Relevant Video: https://youtu.be/ZZY9YE7rZJw
|
||||||
|
|
||||||
|
Links |
||||||
|
~~~~~ |
||||||
|
YouTube: https://www.youtube.com/javidx9
|
||||||
|
https://www.youtube.com/javidx9extra
|
||||||
|
Discord: https://discord.gg/WhwHUMV
|
||||||
|
Twitter: https://www.twitter.com/javidx9
|
||||||
|
Twitch: https://www.twitch.tv/javidx9
|
||||||
|
GitHub: https://www.github.com/onelonecoder
|
||||||
|
Patreon: https://www.patreon.com/javidx9
|
||||||
|
Homepage: https://www.onelonecoder.com
|
||||||
|
|
||||||
|
Author |
||||||
|
~~~~~~ |
||||||
|
David Barr, aka javidx9, ©OneLoneCoder 2018, 2019, 2020 |
||||||
|
*/ |
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#define OLC_PGE_APPLICATION |
||||||
|
#include "olcPixelGameEngine.h" |
||||||
|
|
||||||
|
#include <random> |
||||||
|
|
||||||
|
constexpr uint32_t g_starColours[8] =
|
||||||
|
{ |
||||||
|
0xFFFFFFFF, 0xFFD9FFFF, 0xFFA3FFFF, 0xFFFFC8C8, |
||||||
|
0xFFFFCB9D, 0xFF9F9FFF, 0xFF415EFF, 0xFF28199D |
||||||
|
}; |
||||||
|
|
||||||
|
|
||||||
|
struct sPlanet |
||||||
|
{ |
||||||
|
double distance = 0.0; |
||||||
|
double diameter = 0.0; |
||||||
|
double foliage = 0.0; |
||||||
|
double minerals = 0.0; |
||||||
|
double water = 0.0; |
||||||
|
double gases = 0.0; |
||||||
|
double temperature = 0.0; |
||||||
|
double population = 0.0; |
||||||
|
bool ring = false; |
||||||
|
std::vector<double> vMoons; |
||||||
|
}; |
||||||
|
|
||||||
|
class cStarSystem |
||||||
|
{ |
||||||
|
public: |
||||||
|
cStarSystem(uint32_t x, uint32_t y, bool bGenerateFullSystem = false) |
||||||
|
{ |
||||||
|
// Set seed based on location of star system
|
||||||
|
nProcGen = (x & 0xFFFF) << 16 | (y & 0xFFFF); |
||||||
|
|
||||||
|
// Not all locations contain a system
|
||||||
|
starExists = (rndInt(0, 20) == 1); |
||||||
|
if (!starExists) return; |
||||||
|
|
||||||
|
// Generate Star
|
||||||
|
starDiameter = rndDouble(10.0, 40.0); |
||||||
|
starColour.n = g_starColours[rndInt(0, 8)]; |
||||||
|
|
||||||
|
// When viewing the galaxy map, we only care about the star
|
||||||
|
// so abort early
|
||||||
|
if (!bGenerateFullSystem) return; |
||||||
|
|
||||||
|
// If we are viewing the system map, we need to generate the
|
||||||
|
// full system
|
||||||
|
|
||||||
|
// Generate Planets
|
||||||
|
double dDistanceFromStar = rndDouble(60.0, 200.0); |
||||||
|
int nPlanets = rndInt(0, 10); |
||||||
|
for (int i = 0; i < nPlanets; i++) |
||||||
|
{ |
||||||
|
sPlanet p; |
||||||
|
p.distance = dDistanceFromStar; |
||||||
|
dDistanceFromStar += rndDouble(20.0, 200.0); |
||||||
|
p.diameter = rndDouble(4.0, 20.0); |
||||||
|
|
||||||
|
// Could make temeprature a function of distance from star
|
||||||
|
p.temperature = rndDouble(-200.0, 300.0); |
||||||
|
|
||||||
|
// Composition of planet
|
||||||
|
p.foliage = rndDouble(0.0, 1.0); |
||||||
|
p.minerals = rndDouble(0.0, 1.0); |
||||||
|
p.gases = rndDouble(0.0, 1.0); |
||||||
|
p.water = rndDouble(0.0, 1.0); |
||||||
|
|
||||||
|
// Normalise to 100%
|
||||||
|
double dSum = 1.0 / (p.foliage + p.minerals + p.gases + p.water); |
||||||
|
p.foliage *= dSum; |
||||||
|
p.minerals *= dSum; |
||||||
|
p.gases *= dSum; |
||||||
|
p.water *= dSum; |
||||||
|
|
||||||
|
// Population could be a function of other habitat encouraging
|
||||||
|
// properties, such as temperature and water
|
||||||
|
p.population = std::max(rndInt(-5000000, 20000000), 0); |
||||||
|
|
||||||
|
// 10% of planets have a ring
|
||||||
|
p.ring = rndInt(0, 10) == 1; |
||||||
|
|
||||||
|
// Satellites (Moons)
|
||||||
|
int nMoons = std::max(rndInt(-5, 5), 0); |
||||||
|
for (int n = 0; n < nMoons; n++) |
||||||
|
{ |
||||||
|
// A moon is just a diameter for now, but it could be
|
||||||
|
// whatever you want!
|
||||||
|
p.vMoons.push_back(rndDouble(1.0, 5.0)); |
||||||
|
} |
||||||
|
|
||||||
|
// Add planet to vector
|
||||||
|
vPlanets.push_back(p); |
||||||
|
}
|
||||||
|
} |
||||||
|
|
||||||
|
~cStarSystem() |
||||||
|
{ |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
public: |
||||||
|
std::vector<sPlanet> vPlanets; |
||||||
|
|
||||||
|
public: |
||||||
|
bool starExists = false; |
||||||
|
double starDiameter = 0.0f; |
||||||
|
olc::Pixel starColour = olc::WHITE; |
||||||
|
|
||||||
|
private: |
||||||
|
uint32_t nProcGen = 0; |
||||||
|
|
||||||
|
double rndDouble(double min, double max) |
||||||
|
{ |
||||||
|
return ((double)rnd() / (double)(0x7FFFFFFF)) * (max - min) + min; |
||||||
|
} |
||||||
|
|
||||||
|
int rndInt(int min, int max) |
||||||
|
{ |
||||||
|
return (rnd() % (max - min)) + min; |
||||||
|
} |
||||||
|
|
||||||
|
uint32_t rnd() |
||||||
|
{ |
||||||
|
nProcGen += 0xe120fc15; |
||||||
|
uint64_t tmp; |
||||||
|
tmp = (uint64_t)nProcGen * 0x4a39b70d; |
||||||
|
uint32_t m1 = (tmp >> 32) ^ tmp; |
||||||
|
tmp = (uint64_t)m1 * 0x12fad5c9; |
||||||
|
uint32_t m2 = (tmp >> 32) ^ tmp; |
||||||
|
return m2; |
||||||
|
} |
||||||
|
}; |
||||||
|
|
||||||
|
class olcGalaxy : public olc::PixelGameEngine |
||||||
|
{ |
||||||
|
public: |
||||||
|
olcGalaxy() |
||||||
|
{ |
||||||
|
sAppName = "olcGalaxy"; |
||||||
|
} |
||||||
|
|
||||||
|
public: |
||||||
|
bool OnUserCreate() override |
||||||
|
{ |
||||||
|
return true; |
||||||
|
} |
||||||
|
|
||||||
|
olc::vf2d vGalaxyOffset = { 0,0 }; |
||||||
|
bool bStarSelected = false; |
||||||
|
uint32_t nSelectedStarSeed1 = 0; |
||||||
|
uint32_t nSelectedStarSeed2 = 0; |
||||||
|
|
||||||
|
|
||||||
|
/*uint32_t nLehmer = 0;
|
||||||
|
uint32_t Lehmer32() |
||||||
|
{ |
||||||
|
nLehmer += 0xe120fc15; |
||||||
|
uint64_t tmp; |
||||||
|
tmp = (uint64_t)nLehmer * 0x4a39b70d; |
||||||
|
uint32_t m1 = (tmp >> 32) ^ tmp; |
||||||
|
tmp = (uint64_t)m1 * 0x12fad5c9; |
||||||
|
uint32_t m2 = (tmp >> 32) ^ tmp; |
||||||
|
return m2; |
||||||
|
}*/ |
||||||
|
|
||||||
|
bool OnUserUpdate(float fElapsedTime) override |
||||||
|
{ |
||||||
|
if (fElapsedTime <= 0.0001f) return true; |
||||||
|
Clear(olc::BLACK); |
||||||
|
|
||||||
|
//if (GetKey(olc::SPACE).bReleased)
|
||||||
|
//{
|
||||||
|
|
||||||
|
// //srand(1000);
|
||||||
|
|
||||||
|
// std::random_device rd;
|
||||||
|
// std::mt19937 mt(1000);
|
||||||
|
// std::uniform_int_distribution<int> dist(0, 256);
|
||||||
|
|
||||||
|
// auto tp1 = std::chrono::system_clock::now();
|
||||||
|
// // Ranomness Tests
|
||||||
|
// for (int x = 0; x < ScreenWidth(); x++)
|
||||||
|
// {
|
||||||
|
// for (int y = 0; y < ScreenHeight(); y++)
|
||||||
|
// {
|
||||||
|
// bool bIsStar = false;
|
||||||
|
// int nSeed = y << 16 | x;
|
||||||
|
//
|
||||||
|
// // Standard C++ rand()
|
||||||
|
// //srand(nSeed);
|
||||||
|
// //bIsStar = rand() % 256 < 32;
|
||||||
|
|
||||||
|
// // std::random
|
||||||
|
// //mt.seed(nSeed);
|
||||||
|
// //bIsStar = dist(mt) < 32;
|
||||||
|
|
||||||
|
// // Lehmer32
|
||||||
|
// nLehmer = nSeed;
|
||||||
|
// bIsStar = Lehmer32() % 256 < 32;
|
||||||
|
|
||||||
|
// Draw(x, y, bIsStar ? olc::WHITE : olc::BLACK);
|
||||||
|
// }
|
||||||
|
// }
|
||||||
|
// auto tp2 = std::chrono::system_clock::now();
|
||||||
|
// std::chrono::duration<float> elapsedTime = tp2 - tp1;
|
||||||
|
// DrawString(3, 3, "Time: " + std::to_string(elapsedTime.count()), olc::RED, 2);
|
||||||
|
//}
|
||||||
|
|
||||||
|
|
||||||
|
//return true;
|
||||||
|
|
||||||
|
|
||||||
|
if (GetKey(olc::W).bHeld) vGalaxyOffset.y -= 50.0f * fElapsedTime; |
||||||
|
if (GetKey(olc::S).bHeld) vGalaxyOffset.y += 50.0f * fElapsedTime; |
||||||
|
if (GetKey(olc::A).bHeld) vGalaxyOffset.x -= 50.0f * fElapsedTime; |
||||||
|
if (GetKey(olc::D).bHeld) vGalaxyOffset.x += 50.0f * fElapsedTime; |
||||||
|
|
||||||
|
int nSectorsX = ScreenWidth() / 16; |
||||||
|
int nSectorsY = ScreenHeight() / 16; |
||||||
|
|
||||||
|
olc::vi2d mouse = { GetMouseX() / 16, GetMouseY() / 16 }; |
||||||
|
olc::vi2d galaxy_mouse = mouse + vGalaxyOffset; |
||||||
|
olc::vi2d screen_sector = { 0,0 }; |
||||||
|
|
||||||
|
for (screen_sector.x = 0; screen_sector.x < nSectorsX; screen_sector.x++) |
||||||
|
for (screen_sector.y = 0; screen_sector.y < nSectorsY; screen_sector.y++) |
||||||
|
{ |
||||||
|
uint32_t seed1 = (uint32_t)vGalaxyOffset.x + (uint32_t)screen_sector.x; |
||||||
|
uint32_t seed2 = (uint32_t)vGalaxyOffset.y + (uint32_t)screen_sector.y; |
||||||
|
|
||||||
|
cStarSystem star(seed1, seed2); |
||||||
|
if (star.starExists) |
||||||
|
{ |
||||||
|
FillCircle(screen_sector.x * 16 + 8, screen_sector.y * 16 + 8,
|
||||||
|
(int)star.starDiameter / 8, star.starColour); |
||||||
|
|
||||||
|
// For convenience highlight hovered star
|
||||||
|
if (mouse.x == screen_sector.x && mouse.y == screen_sector.y) |
||||||
|
{ |
||||||
|
DrawCircle(screen_sector.x * 16 + 8, screen_sector.y * 16 + 8, 12, olc::YELLOW); |
||||||
|
} |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
// Handle Mouse Click
|
||||||
|
if (GetMouse(0).bPressed) |
||||||
|
{ |
||||||
|
uint32_t seed1 = (uint32_t)vGalaxyOffset.x + (uint32_t)mouse.x; |
||||||
|
uint32_t seed2 = (uint32_t)vGalaxyOffset.y + (uint32_t)mouse.y; |
||||||
|
|
||||||
|
cStarSystem star(seed1, seed2); |
||||||
|
if (star.starExists) |
||||||
|
{ |
||||||
|
bStarSelected = true; |
||||||
|
nSelectedStarSeed1 = seed1; |
||||||
|
nSelectedStarSeed2 = seed2; |
||||||
|
} |
||||||
|
else |
||||||
|
bStarSelected = false; |
||||||
|
} |
||||||
|
|
||||||
|
// Draw Details of selected star system
|
||||||
|
if (bStarSelected) |
||||||
|
{ |
||||||
|
// Generate full star system
|
||||||
|
cStarSystem star(nSelectedStarSeed1, nSelectedStarSeed2, true); |
||||||
|
|
||||||
|
// Draw Window
|
||||||
|
FillRect(8, 240, 496, 232, olc::DARK_BLUE); |
||||||
|
DrawRect(8, 240, 496, 232, olc::WHITE); |
||||||
|
|
||||||
|
// Draw Star
|
||||||
|
olc::vi2d vBody = { 14, 356 }; |
||||||
|
|
||||||
|
vBody.x += star.starDiameter * 1.375; |
||||||
|
FillCircle(vBody, (int)(star.starDiameter * 1.375), star.starColour);
|
||||||
|
vBody.x += (star.starDiameter * 1.375) + 8; |
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
// Draw Planets
|
||||||
|
for (auto& planet : star.vPlanets) |
||||||
|
{ |
||||||
|
if (vBody.x + planet.diameter >= 496) break; |
||||||
|
|
||||||
|
vBody.x += planet.diameter; |
||||||
|
FillCircle(vBody, (int)(planet.diameter * 1.0), olc::RED); |
||||||
|
|
||||||
|
olc::vi2d vMoon = vBody; |
||||||
|
vMoon.y += planet.diameter + 10; |
||||||
|
|
||||||
|
// Draw Moons
|
||||||
|
for (auto& moon : planet.vMoons) |
||||||
|
{ |
||||||
|
vMoon.y += moon; |
||||||
|
FillCircle(vMoon, (int)(moon * 1.0), olc::GREY); |
||||||
|
vMoon.y += moon + 10; |
||||||
|
} |
||||||
|
|
||||||
|
vBody.x += planet.diameter + 8; |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
return true; |
||||||
|
} |
||||||
|
}; |
||||||
|
|
||||||
|
int main() |
||||||
|
{ |
||||||
|
olcGalaxy demo; |
||||||
|
if (demo.Construct(512, 480, 2, 2, false, false)) |
||||||
|
demo.Start(); |
||||||
|
return 0; |
||||||
|
} |
||||||
Loading…
Reference in new issue