I'm making a 2D Tower Defense and currently looking into making a save feature. The problem is that my game is procedural generated (based on the rogue-like tutorial posted by Unity):   At runtime I generate a random amount (approx 7k) tiles of treasures, obstacles and different enemies at random locations. Some tiles will also be destructible and not exist when destroyed.  What should I do to save the position of each tile and values such as "Level" and "Gold"?  This is a list of what I need to be saved:   Player value (position, gold, level, health, inventory) Building values (Tower/Building positions, health value etc) Wave values (wave_level) Board values (all tile positions such as obstacles, treasures etc)   NOTE: Every tile is a GameObject.
What is the procedure followed by game programmers for saving and resuming game state? like files/mappings. I want to save it for tower defense game and I am using unity3D game engine.
If I select a feature and run self.iface.actionIdentify().trigger() it will open the identify window but won't open the selected feature's data, how can I make it open the data of the selected feature? How to reinstall PulseAudio (Ubuntu 12.04) Can't we compute $\lim_{n \to \infty}\frac{1+ \cdots +n}{n^2}=\lim_{n\to\infty}\frac{1}{n^2}+\cdots +\lim_{n\to\infty}\frac{n}{n^2}=0$? I just learned the definition of limits, and I learned that if $\{a_n\}, \{b_n\} $ converges, then $$\lim_{n\to \infty} (a_n+b_n)=\lim_{n \to \infty} a_n+\lim_{n \to \infty}b_n$$ holds.  And my teacher said that $\lim_{n \to \infty}\frac{1+2+3+ \cdots +n}{n^2}=\lim_{n\to \infty}\frac{\frac{n(n+1)}{2}}{n^2}=\frac{1}{2}$.  But can't we compute like  $$\lim_{n \to \infty}\frac{1+2+3+ \cdots +n}{n^2}=\lim_{n\to\infty}\frac{1}{n^2}+\lim_{n\to\infty}\frac{2}{n^2}+\lim_{n\to\infty}\frac{3}{n^2}+\cdots +\lim_{n\to\infty}\frac{n}{n^2}=0+0+\cdots+0=0$$? How to replace subscript symbols Can I cast spells in the middle of another spell resolving? Say I had  and I used  on something, could I respond to Cloudshift bringing the creature back into play with  or something similar? Is there an efficient way to enumerate the unique subgroups of the symmetric group? Naïvely, for the symmetric group $S_n$ of order $\left | S_n \right | = n!$, there are $2^{n!}$ subsets of the group members that could potentially form a subgroup. In addition, many of these subgroups are going to be isomorphic to each other. I feel that the question has an easy answer in terms of the conjugacy classes, but I don't see how. If the answer generalizes to all finite groups, please elaborate! data.table and table unexpected behavior Lazy Eye in Infants, Preparations for Seeing a Specialist My youngest (14 months) has started showing signs of either strabismus or ambylopia (both commonly referred to as "lazy eye", where one eye seems to track differently than the other when the child is tired or isn't focusing).  We're going to see an ophthalmologist once the pediatrician weighs in and recommends one, and I'm interested in suggestions for what I should look for in an ophthalmologist, and in what we should do to prepare for the visit.  Particularly, how important is it that we find one that specifically mentions these conditions as things they specialize in?  They're fairly common conditions (affecting over 4% of children), so I would expect most pediatric ophthalmologists to have as one of their main purposes helping to diagnose and treat lazy eyes; but many do not mention them in their list of specializations.    And, in terms of preparation, do we need to keep track of time or length of lazy eye bouts?  Should we take any videos?  Our pediatrician hasn't noticed this in her periodic checks, but I suspect that he's more focused during these visits (a person he's not that used to, who is talking a lot to him).  I worry the ophthalmologist will have the same problem - not be able to diagnose because of lack of presentation during the visit. What is the "?" symbol in URL used for in php? Beamer to HTML using make4ht \documentclass{beamer} \usetheme{Madrid} \begin{document} \begin{frame} aaa \end{frame} \begin{frame} bbb \end{frame} \end{document}   The above tex file is to be converted into html. I am using the following command   make4ht filename.tex   However it throws error. The basic question is "Is it possible to convert beamer presentation to html using make4ht?" What are the differences between a pointer variable and a reference variable in C++? How can I get exactly 5 logarithmic divisions of an interval? Loading a properties file from Java package I need to clip a vector layer to the extent of a raster. It has to be very precise that's why I would not want to draw a polygon myself (and clip the two polygons). There seem to be some ways to clip a raster to a polygon but I have difficulties to find a solution to clip a polygon to a raster. I already tried to create a polygon out of my raster several times in ArcGIS and R, so I could clip the result. But every time it crashes because the raster is to big. There must be a simple way to solve this, and somehow I can just not see it at the moment.  How can I do this using GDAL? How to import footage in the VSE for optimal playback and organization? How to import footage in VSE for optimal playback and organization, using proxies and workarounds? My textbook explains the proof, which I don't understand:  "Consider two bases $v_1...v_p$ and $w_1...w_q$ of V. Since the vectors $v$ are linearly independent and the vectors $w$ span V..."  How exactly does $w$ span V?   The book then says the same for vectors $v$, that $v$ spans V and hence $p=q$, but I don't really understand how you can assume that given two sets of vectors that are basis, one set must span V. I have a bash script which must call another bash script which varies per-user in order to get some configuration information, like so:  somescript:  #!/bin/bash ${HOME}/.ssconfig echo "Hello, ${VARIABLE}!"   ~/.ssconfig  #!/bin/bash VARIABLE=world   Which, instead of giving me Hello, world! as expected, gives me Hello, ! How can I pass variables up from a script to the one that called it? Cannot pickup Gauldur amulet fragment in Geirmund's Hall I am having trouble retrieving the Gauldur amulet fragment from Geirmund's Hall after clearing it before I was aware of this quest. Now when I return the quest indicator points on the floor in boss' room, specifically on a patch of submerged dirt. The water is quite shallow and I am quite sure that there is nothing to pick up there.  To me it seems the quest has bugged as I killed the boss before embarking on this quest, or killed him while unaware of the quest and not picking the fragment up. How can I get around this? Is there a console command which can help me? Command "find -name" must be enclosed in quotes or it doesn't work. Why is that? find . -name *.rb   doesn't work on my ubuntu  I have to do  find . -name "*.rb"   to get it to work.  Why is that? Prove that there are infinitely many primes and non-primes in the numbers $10^n+1$, where $n$ is a natural number. So numbers are 101, 1001, 10001 etc.