Adding Collision Spheres — Handmade Hero — Episode Guide

0:01Welcome with thanks to our sponsor the Rust Recovery Foundation

🗩

0:01Welcome with thanks to our sponsor the Rust Recovery Foundation

🗩

0:01Welcome with thanks to our sponsor the Rust Recovery Foundation

🗩

1:25Recap and set the stage for the day

🗩

1:25Recap and set the stage for the day

🗩

1:25Recap and set the stage for the day

🗩

2:16Demo our collision system

🏃

2:16Demo our collision system

🏃

2:16Demo our collision system

🏃

3:00Collision system clean-up phase: 1) Spatial partition

🏃

3:00Collision system clean-up phase: 1) Spatial partition

🏃

3:00Collision system clean-up phase: 1) Spatial partition

🏃

5:33Collision system clean-up phase: 2) Spherical collision volume

🏃

5:33Collision system clean-up phase: 2) Spherical collision volume

🏃

5:33Collision system clean-up phase: 2) Spherical collision volume

🏃

8:17Collision system clean-up phase: 3) Partial embedding

🏃

8:17Collision system clean-up phase: 3) Partial embedding

🏃

8:17Collision system clean-up phase: 3) Partial embedding

🏃

9:25Determine to add collision spheres

📖

9:25Determine to add collision spheres

📖

9:25Determine to add collision spheres

📖

11:39Set up CollidesAtP() to support collision spheres

15:54Respecify CollidesAtP() to compute collision of various shapes in the same branch

18:22ronin825 Branchless programming?

🗪

18:22ronin825 Branchless programming?

🗪

18:22ronin825 Branchless programming?

🗪

19:09Introduce ShapesCollide()

20:10abecderic If less code is better, isn't no code at all most best? Why are we even doing programming then?

🗪

20:10abecderic If less code is better, isn't no code at all most best? Why are we even doing programming then?

🗪

20:10abecderic If less code is better, isn't no code at all most best? Why are we even doing programming then?

🗪

22:29Implement ShapesCollide()

33:59Describe ShapesCollide()

📖

33:59Describe ShapesCollide()

📖

33:59Describe ShapesCollide()

📖

35:34Add EntityFlag_SphereCollision and fix compile errors

36:07Rectangular collision continues working

🏃

36:07Rectangular collision continues working

🏃

36:07Rectangular collision continues working

🏃

37:14Make the Glove use SphereCollision in AddPlayer()

37:45We don't know if our Glove is a sphere

🏃

37:45We don't know if our Glove is a sphere

🏃

37:45We don't know if our Glove is a sphere

🏃

38:25Make UpdateAndRenderEntities() draw SphereCollision entities in orange

39:19Our Glove is a sphere

🏃

39:19Our Glove is a sphere

🏃

39:19Our Glove is a sphere

🏃

40:45Double-check CollidesAtP() and ShapesCollide()

📖

40:45Double-check CollidesAtP() and ShapesCollide()

📖

40:45Double-check CollidesAtP() and ShapesCollide()

📖

45:53Consider diagramming spherical collision

📖

45:53Consider diagramming spherical collision

📖

45:53Consider diagramming spherical collision

📖

49:17Determine to enable CollidesAtP() to use the repulsion direction computed by ShapesCollide()

📖

49:17Determine to enable CollidesAtP() to use the repulsion direction computed by ShapesCollide()

📖

49:17Determine to enable CollidesAtP() to use the repulsion direction computed by ShapesCollide()

📖

52:33Consider adding spherical drawing to the renderer

📖

52:33Consider adding spherical drawing to the renderer

📖

52:33Consider adding spherical drawing to the renderer

📖

55:34Change ShapesCollide() to use CenterDelta and Radius for its rectangle vs rectangle test

1:00:37The Glove's spring is wild

🏃

1:00:37The Glove's spring is wild

🏃

1:00:37The Glove's spring is wild

🏃

1:01:11Make the rectangle vs rectangle collision test less permissive in ShapesCollide()

1:01:48Familiar movement is still broken

🏃

1:01:48Familiar movement is still broken

🏃

1:01:48Familiar movement is still broken

🏃

1:02:14Double-check the rectangle vs rectangle collision test in ShapesCollide()

📖

1:02:14Double-check the rectangle vs rectangle collision test in ShapesCollide()

📖

1:02:14Double-check the rectangle vs rectangle collision test in ShapesCollide()

📖

1:02:23Use Square() in the rectangle vs rectangle collision test in ShapesCollide()

1:03:36Molly: Meow

🐱

1:03:36Molly: Meow

🐱

1:03:36Molly: Meow

🐱

1:05:20Our familiar does move and collide fine

🏃

1:05:20Our familiar does move and collide fine

🏃

1:05:20Our familiar does move and collide fine

🏃

1:05:59Reflect on ShapesCollide()

📖

1:05:59Reflect on ShapesCollide()

📖

1:05:59Reflect on ShapesCollide()

📖

1:07:08M: Scrolling around

🐱

1:07:08M: Scrolling around

🐱

1:07:08M: Scrolling around

🐱

1:08:18Consider improvements to ShapesCollide()

📖

1:08:18Consider improvements to ShapesCollide()

📖

1:08:18Consider improvements to ShapesCollide()

📖

1:09:57M: Put the mouse out of action

🐱

1:09:57M: Put the mouse out of action

🐱

1:09:57M: Put the mouse out of action

🐱

1:10:51Suspect improvements to shape vs shape collision

📖

1:10:51Suspect improvements to shape vs shape collision

📖

1:10:51Suspect improvements to shape vs shape collision

📖

1:11:52Instrument ShapesCollide() to diagram various shaped collisions

1:20:39Set up MoveEntity() to call DIAGRAM_Phase()

1:22:34Create handmade_diagram.h with stubs of the various DIAGRAM_*() functions

1:27:44Q&A

🗩

1:27:44Q&A

🗩

1:27:44Q&A

🗩

1:27:51thesandvichmaker handmade_hero I just tested and 4coder 4.1.8 does fix the indentation. It's a one-line diff

🗪

1:27:51thesandvichmaker handmade_hero I just tested and 4coder 4.1.8 does fix the indentation. It's a one-line diff

🗪

1:27:51thesandvichmaker handmade_hero I just tested and 4coder 4.1.8 does fix the indentation. It's a one-line diff

🗪

1:28:14an0nymal const? Did I see him instinctively type const

🗪

1:28:14an0nymal const? Did I see him instinctively type const

🗪

1:28:14an0nymal const? Did I see him instinctively type const

🗪

1:30:32emperormetallix Q: Why is a new diagramming system needed? Why not just use the existing renderer?

🗪

1:30:32emperormetallix Q: Why is a new diagramming system needed? Why not just use the existing renderer?

🗪

1:30:32emperormetallix Q: Why is a new diagramming system needed? Why not just use the existing renderer?

🗪

1:30:46Demo the current debug visualisation

🏃

1:30:46Demo the current debug visualisation

🏃

1:30:46Demo the current debug visualisation

🏃

1:32:20tfnw handmade_hero Off-topic: Should the PushArray() for SpatialGridLeaves in handmade_lighting.cpp be aligned to 16 bytes, for movaps on 128-bit memory operands?

🗪

1:32:20tfnw handmade_hero Off-topic: Should the PushArray() for SpatialGridLeaves in handmade_lighting.cpp be aligned to 16 bytes, for movaps on 128-bit memory operands?

🗪

1:32:20tfnw handmade_hero Off-topic: Should the PushArray() for SpatialGridLeaves in handmade_lighting.cpp be aligned to 16 bytes, for movaps on 128-bit memory operands?

🗪

1:34:37Make GridBuildSpatialPartition() align the SpatialGridLeaves PushArray() to 16 bytes

1:35:12The lighting remains fine

🏃

1:35:12The lighting remains fine

🏃

1:35:12The lighting remains fine

🏃

1:37:04mindmark42 Q: Are we still planning on adding cylinder or capsule collisions?

🗪

1:37:04mindmark42 Q: Are we still planning on adding cylinder or capsule collisions?

🗪

1:37:04mindmark42 Q: Are we still planning on adding cylinder or capsule collisions?

🗪

1:37:28tfnw handmade_hero Should the ID.Value be checked to be not null in handmade_asset.cpp?

🗪

1:37:28tfnw handmade_hero Should the ID.Value be checked to be not null in handmade_asset.cpp?

🗪

1:37:28tfnw handmade_hero Should the ID.Value be checked to be not null in handmade_asset.cpp?

🗪

1:38:07tfnw LoadFont()

🗪

1:38:07tfnw LoadFont()

🗪

1:38:07tfnw LoadFont()

🗪

1:38:51Make LoadFont() check that ID.Value is not null

1:41:33mooofdoom handmade_hero Hi Casey! First time catching your stream live after I finally caught up on every Handmade Hero episode. Wanted to tell you it's been really fun and very enlightening following along. Super looking forward to Star Code Galaxy as well!

🗪

1:41:33mooofdoom handmade_hero Hi Casey! First time catching your stream live after I finally caught up on every Handmade Hero episode. Wanted to tell you it's been really fun and very enlightening following along. Super looking forward to Star Code Galaxy as well!

🗪

1:41:33mooofdoom handmade_hero Hi Casey! First time catching your stream live after I finally caught up on every Handmade Hero episode. Wanted to tell you it's been really fun and very enlightening following along. Super looking forward to Star Code Galaxy as well!

🗪

1:41:55thesandvichmaker handmade_hero For the upgrade to 4coder 4.1.8, it seems to break something with modal bindings

🗪

1:41:55thesandvichmaker handmade_hero For the upgrade to 4coder 4.1.8, it seems to break something with modal bindings

🗪

1:41:55thesandvichmaker handmade_hero For the upgrade to 4coder 4.1.8, it seems to break something with modal bindings

🗪

1:42:41centhusiast Q: Could you explain flood fill algorithm as it was used in the Minesweeper game? Thanks!

🗪

1:42:41centhusiast Q: Could you explain flood fill algorithm as it was used in the Minesweeper game? Thanks!

🗪

1:42:41centhusiast Q: Could you explain flood fill algorithm as it was used in the Minesweeper game? Thanks!

🗪

1:43:15thesandvichmaker handmade_hero The fix for the auto indentation is one line. You could apply it to your current 4coder

🗪

1:43:15thesandvichmaker handmade_hero The fix for the auto indentation is one line. You could apply it to your current 4coder

🗪

1:43:15thesandvichmaker handmade_hero The fix for the auto indentation is one line. You could apply it to your current 4coder

🗪

1:43:24mooofdoom Q: Any reason you only have the xyz-diagonal case in the voxel collision system? Wouldn't you want xy-, xz-, and yz-diagonal motion as well?

🗪

1:43:24mooofdoom Q: Any reason you only have the xyz-diagonal case in the voxel collision system? Wouldn't you want xy-, xz-, and yz-diagonal motion as well?

🗪

1:43:24mooofdoom Q: Any reason you only have the xyz-diagonal case in the voxel collision system? Wouldn't you want xy-, xz-, and yz-diagonal motion as well?

🗪

1:44:54TODO(casey): Try having edge-diagonal motion as well as corner-diagonal motion?

1:45:19emperormetallix Q: Does Handmade Hero really not have a sphere drawing routine?

🗪

1:45:19emperormetallix Q: Does Handmade Hero really not have a sphere drawing routine?

🗪

1:45:19emperormetallix Q: Does Handmade Hero really not have a sphere drawing routine?

🗪

1:46:48sagian2005 Q: Couldn't you just apply a circle to a camera-facing quad to fake a sphere?

🗪

1:46:48sagian2005 Q: Couldn't you just apply a circle to a camera-facing quad to fake a sphere?

🗪

1:46:48sagian2005 Q: Couldn't you just apply a circle to a camera-facing quad to fake a sphere?

🗪

1:47:18centhusiast Q: This algorithm¹

🗪

1:47:18centhusiast Q: This algorithm¹

🗪

1:47:18centhusiast Q: This algorithm¹

🗪

1:48:25centhusiast Q: How does it work?

🗪

1:48:25centhusiast Q: How does it work?

🗪

1:48:25centhusiast Q: How does it work?

🗪

1:51:37thesandvichmaker Will it be finished before Cyberpunk 2077?

🗪

1:51:37thesandvichmaker Will it be finished before Cyberpunk 2077?

🗪

1:51:37thesandvichmaker Will it be finished before Cyberpunk 2077?

🗪

1:52:42Thanks, everyone

🗩

1:52:42Thanks, everyone

🗩

1:52:42Thanks, everyone

🗩

Keyboard Navigation

Global Keys

Menu toggling

In-Menu and Index Controls

Quotes and References Menus and Index

Quotes, References and Credits Menus

Filter Menu

Filter and Link Menus

Credits Menu