Experimenting with Voxelized Collision | Handmade Hero Episode Guide

0:01Recap and set the stage for the day

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0:01Recap and set the stage for the day

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0:01Recap and set the stage for the day

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1:02Demo our collision boxes

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1:02Demo our collision boxes

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1:02Demo our collision boxes

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1:36Positive-sense (where you can go) collision detection

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1:36Positive-sense (where you can go) collision detection

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1:36Positive-sense (where you can go) collision detection

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4:05Collision tasks: 1. Change MoveEntity() to look for and pick the nearest legal position

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4:05Collision tasks: 1. Change MoveEntity() to look for and pick the nearest legal position

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4:05Collision tasks: 1. Change MoveEntity() to look for and pick the nearest legal position

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5:15Collision tasks: 2. Upgrade to support simultaneous motion

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5:15Collision tasks: 2. Upgrade to support simultaneous motion

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5:15Collision tasks: 2. Upgrade to support simultaneous motion

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7:22Make MoveEntity() use the DesiredPosition, with no concern for collision

8:01Our familiar "penetrates" us and walls

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8:01Our familiar "penetrates" us and walls

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8:01Our familiar "penetrates" us and walls

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8:48Plan to introduce "requested physics" stuff for MoveEntity() to take

10:01Plan to replace the all entities iteration in MoveEntity() with a spatial partition

12:38Rearrange and clear out the cruft from MoveEntity()

15:15Collision from a game design perspective

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15:15Collision from a game design perspective

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15:15Collision from a game design perspective

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16:56Demo conversation zooming

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16:56Demo conversation zooming

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16:56Demo conversation zooming

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17:37Collision from a game design perspective (cont.)

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17:37Collision from a game design perspective (cont.)

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17:37Collision from a game design perspective (cont.)

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18:11Remove SpeculativeCollide() and add EventOnCollision and PreventMotionOnCollision entity_flags

19:14Reject dynamic event-based collision, in favour of deterministic entity_flags

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19:14Reject dynamic event-based collision, in favour of deterministic entity_flags

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19:14Reject dynamic event-based collision, in favour of deterministic entity_flags

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23:13Remove HandleCollision() and CanOverlap()

24:06Determine to make MoveEntity() search in subdivided space

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24:06Determine to make MoveEntity() search in subdivided space

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24:06Determine to make MoveEntity() search in subdivided space

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25:374coder theming

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25:374coder theming

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25:374coder theming

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27:16jarput Purple means it couldn't find the variable in the theme file

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27:16jarput Purple means it couldn't find the variable in the theme file

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27:16jarput Purple means it couldn't find the variable in the theme file

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27:33tarriest_python handmade_hero I wrote this addition you can disable it with // f4_disable_cursor_token_occurance = true; in config.4coder

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27:33tarriest_python handmade_hero I wrote this addition you can disable it with // f4_disable_cursor_token_occurance = true; in config.4coder

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27:33tarriest_python handmade_hero I wrote this addition you can disable it with // f4_disable_cursor_token_occurance = true; in config.4coder

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27:50tarriest_python The color option is: fleury_color_token_minor_highlight = 0xC0797979; in the theme

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27:50tarriest_python The color option is: fleury_color_token_minor_highlight = 0xC0797979; in the theme

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27:50tarriest_python The color option is: fleury_color_token_minor_highlight = 0xC0797979; in the theme

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27:554coder: Set fleury_color_token_minor_highlight = 0xff2f2f37

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27:554coder: Set fleury_color_token_minor_highlight = 0xff2f2f37

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27:554coder: Set fleury_color_token_minor_highlight = 0xff2f2f37

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29:15Make MoveEntity() search in subdivided space, initially a fixed-size grid, introducing MoveEntityLocally()

35:09Write a voxel iterator in MoveEntityLocally()

36:44Make MoveEntityLocally() perform the collision test in each voxel

37:29Determine to extend our voxel search with an apron to permit screw-up recovery

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37:29Determine to extend our voxel search with an apron to permit screw-up recovery

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37:29Determine to extend our voxel search with an apron to permit screw-up recovery

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39:35Extend our voxel search with an apron in MoveEntityLocally()

43:26Introduce v3 overloaded / and * operators, and replace Hadamard() with * overloads

50:43victor_cminus There's f4_backspace_token_boundry and f4_delete_token_boundry you can try

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50:43victor_cminus There's f4_backspace_token_boundry and f4_delete_token_boundry you can try

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50:43victor_cminus There's f4_backspace_token_boundry and f4_delete_token_boundry you can try

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50:544coder bindings

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50:544coder bindings

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50:544coder bindings

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51:17Backspace and Del are much better

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51:17Backspace and Del are much better

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51:17Backspace and Del are much better

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51:39Can we delete just a character at a time from the "Open" line?

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51:39Can we delete just a character at a time from the "Open" line?

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51:39Can we delete just a character at a time from the "Open" line?

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51:53Replace Hadamard() with * overloads (cont.)

52:52somebody_took_my_name I believe the lister thing is this param in the config: lister_whole_word_backspace_when_modified

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52:52somebody_took_my_name I believe the lister thing is this param in the config: lister_whole_word_backspace_when_modified

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52:52somebody_took_my_name I believe the lister thing is this param in the config: lister_whole_word_backspace_when_modified

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53:104coder: Set lister_whole_word_backspace_when_modified = true

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53:104coder: Set lister_whole_word_backspace_when_modified = true

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53:104coder: Set lister_whole_word_backspace_when_modified = true

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54:28The Hadamard changes did not break anything

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54:28The Hadamard changes did not break anything

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54:28The Hadamard changes did not break anything

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54:51Consider how to determine where in the voxel we can move

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54:51Consider how to determine where in the voxel we can move

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54:51Consider how to determine where in the voxel we can move

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57:30Initialise a Vacant voxel in MoveEntityLocally()

58:57Introduce IterateVoxel(), voxel_iter and related IsValid() and NextInOrder() functions

1:03:00Respecify Vacant as Occupied in MoveEntityLocally(), and set it up to set Occupied to true

1:04:02Set up MoveEntityLocally() to test if the entire voxel, one level up, is completely unoccupied

1:05:32neitchzehrer Can the amount of time the "entering second hour" notice is displayed be adjusted?

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1:05:32neitchzehrer Can the amount of time the "entering second hour" notice is displayed be adjusted?

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1:05:32neitchzehrer Can the amount of time the "entering second hour" notice is displayed be adjusted?

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1:07:03Make MoveEntityLocally() test the entire Occupied array

1:09:47thesandvichmaker handmade_hero You don’t seem to have virtual whitespace enabled in 4coder. Is that deliberate?

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1:09:47thesandvichmaker handmade_hero You don’t seem to have virtual whitespace enabled in 4coder. Is that deliberate?

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1:09:47thesandvichmaker handmade_hero You don’t seem to have virtual whitespace enabled in 4coder. Is that deliberate?

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1:10:12Enable MoveEntityLocally() to find the best closest position, permitting movement to the desired position

1:16:11In-cell movement works

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1:16:11In-cell movement works

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1:16:11In-cell movement works

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1:16:44Set up to make MoveEntityLocally() do a point-in-box test

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1:16:44Set up to make MoveEntityLocally() do a point-in-box test

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1:16:44Set up to make MoveEntityLocally() do a point-in-box test

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1:18:06Break

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1:18:06Break

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1:18:06Break

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1:18:22"Away from Keyboard" Presentation

1:22:10Return with refilled water

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1:22:10Return with refilled water

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1:22:10Return with refilled water

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1:22:51Make MoveEntityLocally() call RectanglesIntersect() to do its point-in-box test

1:25:54This doesn't work yet

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1:25:54This doesn't work yet

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1:25:54This doesn't work yet

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1:26:01Double-check MoveEntityLocally()

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1:26:01Double-check MoveEntityLocally()

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1:26:01Double-check MoveEntityLocally()

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1:26:22We can punch through walls

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1:26:22We can punch through walls

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1:26:22We can punch through walls

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1:26:39Triple-check MoveEntity() and MoveEntityLocally()

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1:26:39Triple-check MoveEntity() and MoveEntityLocally()

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1:26:39Triple-check MoveEntity() and MoveEntityLocally()

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1:29:04Temporarily make MoveEntityLocally() default to preventing movement

1:29:18Our glove does not move

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1:29:18Our glove does not move

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1:29:18Our glove does not move

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1:29:20Scour MoveEntityLocally() for errors

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1:29:20Scour MoveEntityLocally() for errors

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1:29:20Scour MoveEntityLocally() for errors

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1:31:29Step through MoveEntityLocally()

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1:31:29Step through MoveEntityLocally()

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1:31:29Step through MoveEntityLocally()

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1:32:35Molly Hi

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1:32:35Molly Hi

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1:32:35Molly Hi

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1:34:50We forgot to test the entity_flags

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1:34:50We forgot to test the entity_flags

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1:34:50We forgot to test the entity_flags

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1:35:37Molly *cuddles*

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1:35:37Molly *cuddles*

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1:35:37Molly *cuddles*

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1:36:51Make MoveEntityLocally() test entity_flags, renaming PreventMotionOnCollision to AllowsMotionOnCollision, and making GenerateRoom() and AddConversation() set entity_flags

1:40:04Our entities can move, notably our proportional derivative controlled glove

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1:40:04Our entities can move, notably our proportional derivative controlled glove

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1:40:04Our entities can move, notably our proportional derivative controlled glove

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1:41:21Double-check our occupation test in MoveEntityLocally()

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1:41:21Double-check our occupation test in MoveEntityLocally()

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1:41:21Double-check our occupation test in MoveEntityLocally()

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1:43:17We never collide

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1:43:17We never collide

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1:43:17We never collide

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1:44:10Double-check RectanglesIntersect()

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1:44:10Double-check RectanglesIntersect()

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1:44:10Double-check RectanglesIntersect()

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1:45:01Make MoveEntityLocally() draw occupation state

1:48:56We seem to be detecting collision

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1:48:56We seem to be detecting collision

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1:48:56We seem to be detecting collision

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1:50:28Try making MoveEntityLocally() default to preventing movement

1:50:42We detect collision and prevent movement

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1:50:42We detect collision and prevent movement

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1:50:42We detect collision and prevent movement

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1:51:41Apologise to speedrunners

1:51:55We collide, allowing tunnelling and recovery

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1:51:55We collide, allowing tunnelling and recovery

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1:51:55We collide, allowing tunnelling and recovery

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1:55:24Make MoveEntity() subdivide the voxelized collision search

2:04:48Our glove no longer moves, but the familiar does

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2:04:48Our glove no longer moves, but the familiar does

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2:04:48Our glove no longer moves, but the familiar does

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2:07:05Consider how to handle the glove's interpenetration

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2:07:05Consider how to handle the glove's interpenetration

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2:07:05Consider how to handle the glove's interpenetration

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2:08:42Prevent MoveEntityLocally() from drawing the occupation state

2:08:53Our performance has degraded

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2:08:53Our performance has degraded

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2:08:53Our performance has degraded

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2:09:27Add an assertion on the StepCount in MoveEntity()

2:09:47Hit our assertion in MoveEntity()

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2:09:47Hit our assertion in MoveEntity()

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2:09:47Hit our assertion in MoveEntity()

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2:10:35Inspect our values in MoveEntity()

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2:10:35Inspect our values in MoveEntity()

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2:10:35Inspect our values in MoveEntity()

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2:11:19Make MoveEntity() cap the voxel subdivision StepCount to 5

2:12:12Our performance remains poor

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2:12:12Our performance remains poor

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2:12:12Our performance remains poor

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2:13:03Q&A

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2:13:03Q&A

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2:13:03Q&A

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2:13:16centhusiast Q:I am always wondering why we use CPU optimization if the rendering is done by GPU. Maybe it is a silly question

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2:13:16centhusiast Q:I am always wondering why we use CPU optimization if the rendering is done by GPU. Maybe it is a silly question

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2:13:16centhusiast Q:I am always wondering why we use CPU optimization if the rendering is done by GPU. Maybe it is a silly question

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2:13:43Disable the lighting in UpdateLighting()

2:14:30Our unlit performance in -O2 is fine

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2:14:30Our unlit performance in -O2 is fine

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2:14:30Our unlit performance in -O2 is fine

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2:14:36Our unlit performance in -Od is slow

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2:14:36Our unlit performance in -Od is slow

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2:14:36Our unlit performance in -Od is slow

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2:15:25Re-enable the lighting in UpdateLighting()

2:15:37UpdateAndRenderEntities() takes 10% of our frame time

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2:15:37UpdateAndRenderEntities() takes 10% of our frame time

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2:15:37UpdateAndRenderEntities() takes 10% of our frame time

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2:16:17Make MoveEntity() a TIMED_FUNCTION

2:16:47MoveEntity() takes 5% of our frame time

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2:16:47MoveEntity() takes 5% of our frame time

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2:16:47MoveEntity() takes 5% of our frame time

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2:17:19Disable MoveEntity()

2:17:41ComputeLightPropagationWork() takes 90% of our frame time

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2:17:41ComputeLightPropagationWork() takes 90% of our frame time

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2:17:41ComputeLightPropagationWork() takes 90% of our frame time

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2:18:04Disable the lighting in UpdateLighting()

2:18:11UpdateAndRenderEntities() takes 69% of our frame time

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2:18:11UpdateAndRenderEntities() takes 69% of our frame time

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2:18:11UpdateAndRenderEntities() takes 69% of our frame time

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2:19:03Re-enable the lighting in UpdateLighting()

2:19:17mindmark42 Q: Doesn't the OrigP need to be updated each step?

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2:19:17mindmark42 Q: Doesn't the OrigP need to be updated each step?

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2:19:17mindmark42 Q: Doesn't the OrigP need to be updated each step?

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