Adding Cubes to the Renderer — Handmade Hero — Episode Guide

0:08Recap and set the stage for the day

1:28Run the game to demo the trees always facing the camera

5:13Blackboard: Camera-Facing Cards

9:37Blackboard: Talking about X/Y planes in camera space

11:06handmade_render_group.cpp: Show the PushBitmap() code which maps the world space positions into camera space

12:01Run the game to demo the camera tilt, and consider sorting and the concept of a debug camera

15:17handmade_render_group.h: Introduce camera_transform_flag to aid implementing a debug camera

17:43handmade_world_mode.cpp: Enable UpdateAndRenderWorld() to call SetCameraTransform() twice with different arguments

23:53Run the game to try toggling between the two cameras, and consider how to handle sprite cards intersecting

33:28Blackboard: Introducing a cube primitive

38:23handmade_render_group.h: Introduce render_entry_cube struct

41:11handmade_render_group.cpp: Introduce PushCube() and remove RendersInBackground

46:59Run the game and see that nothing has happened

49:05Investigate where we're placing the hero, and why tweaking the P.Offset_.z causes it to fail

56:33Determine that we're not doing the room sizing stuff correctly

58:49handmade_entity.cpp: Enable UpdateAndRenderEntities() to call PushCube() for the traversables

1:05:43handmade_world_mode.cpp: Introduce an AddPiece() that takes a Height and translates it to a V2

1:06:53handmade_world_mode.cpp: Make AddStandardRoom() call AddPiece() for the traversables

1:11:26handmade_opengl.cpp: Enable OpenGLRenderCommands() to handle the cube case

1:13:22Blackboard: Mr. Cube

1:16:29handmade_opengl.cpp: Enumerate the eight faces for the cube

1:19:50Blackboard: Specifying the points for triangles in a counter-clockwise fashion

1:21:19handmade_opengl.cpp: Introduce GLQuad()

1:23:21Blackboard: Winding, and backface culling

1:26:09handmade_opengl.cpp: Specify the eight faces of the cube for OpenGLRenderCommands() to pass to GLQuad()

1:33:41handmade_opengl.cpp: Enable OpenGLRenderCommands() to generate the cube points

1:36:12Run the game to see our first cube

1:36:48handmade_entity.cpp: Make UpdateAndRenderEntities() pass the offset to PushCube() and run the game to see all the cubes

1:39:31handmade_world_mode.cpp: Make AddStandardRoom() reduce the variance of the traversable position offsets and run the game to check it out

1:41:01handmade_opengl.cpp: Set the cubes' colour to white, give them a texture and run the game to check it out

1:43:40Demo the case in which a tree and a cube interpenetrate and Z-fight, and consider how to combat this

1:47:51handmade_render_group.cpp: Re-enable PushBitmap() to perform shearing, and run the game

1:50:05Q&A

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1:50:05Q&A

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1:50:05Q&A

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1:51:25macielda Any particular reason for using counter clockwise for front faces (as opposed to clockwise)?

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1:51:25macielda Any particular reason for using counter clockwise for front faces (as opposed to clockwise)?

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1:51:25macielda Any particular reason for using counter clockwise for front faces (as opposed to clockwise)?

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1:52:00Blackboard: Coordinate system right-handedness and counter-clockwise winding

1:56:23thesizik A debug camera pan control might be a good idea

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1:56:23thesizik A debug camera pan control might be a good idea

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1:56:23thesizik A debug camera pan control might be a good idea

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1:56:35coreactivities Why have everything slightly tilted? Wouldn't it make more sense to sort the assets according to their bottom or, if you're using 3D space, go for an orthogonal camera and using the Z position for sorting?

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1:56:35coreactivities Why have everything slightly tilted? Wouldn't it make more sense to sort the assets according to their bottom or, if you're using 3D space, go for an orthogonal camera and using the Z position for sorting?

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1:56:35coreactivities Why have everything slightly tilted? Wouldn't it make more sense to sort the assets according to their bottom or, if you're using 3D space, go for an orthogonal camera and using the Z position for sorting?

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1:57:09Run the game to demo the visual interest of the tilting¹

2:01:28Recommend Andrew Russell's blog on the sorting in River City Ransom²

2:06:41macielda I noticed the camera in Handmade Hero is defined by Camera X, Y, Z and P. Can I get X, Y and Z from a Quaternion? Is that a good idea? I mean, if you had Quaternions on Handmade Hero would you define the camera using a Quaternion and P?

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2:06:41macielda I noticed the camera in Handmade Hero is defined by Camera X, Y, Z and P. Can I get X, Y and Z from a Quaternion? Is that a good idea? I mean, if you had Quaternions on Handmade Hero would you define the camera using a Quaternion and P?

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2:06:41macielda I noticed the camera in Handmade Hero is defined by Camera X, Y, Z and P. Can I get X, Y and Z from a Quaternion? Is that a good idea? I mean, if you had Quaternions on Handmade Hero would you define the camera using a Quaternion and P?

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2:08:18macielda What is the 'x' in b32x and u32x?

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2:08:18macielda What is the 'x' in b32x and u32x?

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2:08:18macielda What is the 'x' in b32x and u32x?

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2:08:41Blackboard: "Exactly n bits" vs "At least n bits"

2:13:47jezzi23 How much time and effort do you spend preparing for each episode (e.g. what you're going to do, and which problems you foresee running into)? Or is it just the years of experience that allow you to do this without preparation?

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2:13:47jezzi23 How much time and effort do you spend preparing for each episode (e.g. what you're going to do, and which problems you foresee running into)? Or is it just the years of experience that allow you to do this without preparation?

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2:13:47jezzi23 How much time and effort do you spend preparing for each episode (e.g. what you're going to do, and which problems you foresee running into)? Or is it just the years of experience that allow you to do this without preparation?

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2:14:28macielda Why b32x and not b1x or b8x? (I really don't know)

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2:14:28macielda Why b32x and not b1x or b8x? (I really don't know)

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2:14:28macielda Why b32x and not b1x or b8x? (I really don't know)

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2:15:46dudeinbasement1 Q: Can you do cubic splines sometime?³

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2:15:46dudeinbasement1 Q: Can you do cubic splines sometime?³

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2:15:46dudeinbasement1 Q: Can you do cubic splines sometime?³

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2:17:00Close it down

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2:17:00Close it down

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2:17:00Close it down

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