Cleaned Up Streaming Entity Simulation | Handmade Hero Episode Guide

0:50Recap and set the stage for the day

1:11handmade_world.cpp: Get the sizeof *Source in PackEntityIntoChunk

2:15handmade_sim_region.h: Rename StorageIndex to ID in entity

4:12handmade_sim_region.cpp: Rename GetHashFromStorage to GetHashFromID

4:55handmade_sim_region.h and .cpp: Remove EntityFlag_Nonspacial from entity_flags and continue cleaning stuff up

8:06handmade_world_mode.cpp and handmade_entity.h: Remove the Sword

12:34handmade_world.cpp: Make PackEntityIntoWorld store the entity's location

15:40Debugger: Step into BeginSim and find that we don't get any entities out in our initial pack

18:21Debugger: Step into PackEntityIntoWorld and follow the code through to RemoveWorldChunk

23:57handmade_world.cpp: Increment the Chunk->EntityCount in PackEntityIntoChunk

25:03Run the game and see that we're getting closer, but that the body has stopped tracking the head

27:46handmade_sim_region.cpp: Collapse down AddEntityRaw and AddEntity

32:14Run the game and see exactly the same thing

32:21handmade_sim_region.cpp: Introduce ConnectEntityPointers

34:55Run the game and find that the head and body remain connected

35:17handmade_entity.h: Move the entity-related structs in from handmade_sim_region.h

38:33handmade_world_mode.cpp: Disable the Z-movement and then try traversing the world

39:48handmade_sim_region.cpp: Introduce DeleteEntity

43:26Run the game and test entering and exiting it

45:13handmade_entity.h: Explain why world_position is no longer necessary and consider removing it

48:07handmade_sim_region.cpp: Make BeginSim compute world_position and pass ChunkDelta to AddEntity

51:19handmade_sim_region.cpp: Make the EntityP in EndSim relative to ChunkP

56:42Run the game and find that we can go off the screen okay

56:58handmade_sim_region.cpp: Set the Entity->P and chunk movements at the end of EndSim

57:48Run the game and find that the camera does now follow the hero

58:42Q&A

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58:42Q&A

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58:42Q&A

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1:00:25dustinten Is there any real difference between #ifndef and #if !defined? I always use the first but I see you use the latter

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1:00:25dustinten Is there any real difference between #ifndef and #if !defined? I always use the first but I see you use the latter

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1:00:25dustinten Is there any real difference between #ifndef and #if !defined? I always use the first but I see you use the latter

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1:00:55dudeinbasement1 Do you feel like we take steps backward when we get into code we haven't been in in a while, e.g. the problems with moving the screen?

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1:00:55dudeinbasement1 Do you feel like we take steps backward when we get into code we haven't been in in a while, e.g. the problems with moving the screen?

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1:00:55dudeinbasement1 Do you feel like we take steps backward when we get into code we haven't been in in a while, e.g. the problems with moving the screen?

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1:01:22grub_smub Do you use a lot of header files?

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1:01:22grub_smub Do you use a lot of header files?

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1:01:22grub_smub Do you use a lot of header files?

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1:01:53Remove all instances of #if !defined

1:06:07xgabrielxal Why not #pragma once?

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1:06:07xgabrielxal Why not #pragma once?

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1:06:07xgabrielxal Why not #pragma once?

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1:08:56erdomina Would you say the architecture of the entity system is based more on experience than on exploration?

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1:08:56erdomina Would you say the architecture of the entity system is based more on experience than on exploration?

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1:08:56erdomina Would you say the architecture of the entity system is based more on experience than on exploration?

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1:09:28dustinten Do you have a plan for the "components" of the entities? Just use the flags like you are now?

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1:09:28dustinten Do you have a plan for the "components" of the entities? Just use the flags like you are now?

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1:09:28dustinten Do you have a plan for the "components" of the entities? Just use the flags like you are now?

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1:09:47longboolean As a codebase grows new functions are created and others are no longer called anywhere. Are there any good ways that you recommend for finding out which functions / blocks of code are never used anywhere?

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1:09:47longboolean As a codebase grows new functions are created and others are no longer called anywhere. Are there any good ways that you recommend for finding out which functions / blocks of code are never used anywhere?

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1:09:47longboolean As a codebase grows new functions are created and others are no longer called anywhere. Are there any good ways that you recommend for finding out which functions / blocks of code are never used anywhere?

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1:11:29duroate Is there a way to run the game "entirely" and find out what parts of your code aren't being used, to get rid of?

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1:11:29duroate Is there a way to run the game "entirely" and find out what parts of your code aren't being used, to get rid of?

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1:11:29duroate Is there a way to run the game "entirely" and find out what parts of your code aren't being used, to get rid of?

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1:13:02josianmarriott The dynamite jack entity system is similar (but without compression)

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1:13:02josianmarriott The dynamite jack entity system is similar (but without compression)

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1:13:02josianmarriott The dynamite jack entity system is similar (but without compression)

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1:13:37ttbjm Have you checked LOC recently?

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1:13:37ttbjm Have you checked LOC recently?

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1:13:37ttbjm Have you checked LOC recently?

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1:14:14Jim0_o How is your arm now? Any chance of a streamathon?

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1:14:14Jim0_o How is your arm now? Any chance of a streamathon?

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1:14:14Jim0_o How is your arm now? Any chance of a streamathon?

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1:14:39dudeinbasement1 CTime needs cloc built-in

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1:14:39dudeinbasement1 CTime needs cloc built-in

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1:14:39dudeinbasement1 CTime needs cloc built-in

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1:15:37J_vanRijn Re code coverage, when Farbrausch was trying to cut down size of Kkrieger they wrote a quick code coverage tool called Lekktor and because someone didn't use a certain key in the menu, the code to handle it was left out in the released version

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1:15:37J_vanRijn Re code coverage, when Farbrausch was trying to cut down size of Kkrieger they wrote a quick code coverage tool called Lekktor and because someone didn't use a certain key in the menu, the code to handle it was left out in the released version

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1:15:37J_vanRijn Re code coverage, when Farbrausch was trying to cut down size of Kkrieger they wrote a quick code coverage tool called Lekktor and because someone didn't use a certain key in the menu, the code to handle it was left out in the released version

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1:20:33Wrap it up

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1:20:33Wrap it up

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1:20:33Wrap it up

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