CUB3D

This project was made by Wong Hong You | hwong and Nur Almas | nnorazma

Current Workflow:

• Map Parsing
• Top-down player movement
• Raycasting
• Textures
• Audio

Map Parsing

• Start with square/rectangular maps. Prioritise raycasting.
• Filename check (.cub)
• Check that all walls are closed off (1 for wall, 0 for space)
• Store map in 2d array

Top-down player movement

• Initialise whatever needs to be initialised for mlx. (Window, etc)
• Print a marker to represent the player.
• Handle key press, and map them to players movement.
• Print out a top-down view of the map, preferably with gridlines. (To act as reference for raycast)
• Later on we could maybe minimise this on screen to become the minimap.
• Handle player rotation (I don't have brain to make notes on this atm)

Raycasting

* Refer to that one video I shared

* Horizontal and vertical lines (on the grid) handled somewhat separately. Start with a single ray first.

* Horizontal check (up or down on the grid):

* Check if the nearest cell that the ray is facing on the horizontal line is a wall.

* else, add the x and y offset to check the next horizontal line.

* Draw a ray, just so we can see whats going on lol

* Vertical check (left or right):

* Pretty much the same as above.

We scrapped the method above for multiple reasons:

• The 3D display had very jagged walls.
• The algorithm often miscalculated the distance. Resulting in said jaggedness.
• It could definitely be fixed, with reduced step-size, or with extra work. But extra steps == laggy. And extra work to fix this method used meant more time spent. I don't have enough BH days for that.

Instead we referred to this, Raycasting by Lodev.

Textures

• Initialise and store textures.
• Set current ray texture based on direction.
• Determine top and bottom coordinate of ray.
• Calculate the point at where the ray hits the texture.
• Calculate the exact position of the texture pixel.
• Get the colour of the pixel. Set the pixel to draw as that colour.
• Draw texture on screen. :thumbs_up:

Audio

• Figure out how to do it.
• 
• Wall collision sounds.

Door Animation

• This is about to be the most scuffed animation you've ever seen.
• [ ] Figure out the frames. (Actual video has 118 frames. Thats 118 XPM FILES)
• Went with amogus x the rock.

ISSUES

• Pure raycast render is rough and jagged, anti-aliasing? later on need take vertex coordinates and map to an mlx image.

  • Fixed: Completely changed the method. Smoother lines and display.

• Different wall faces have same color, difficult to make out edges. find out direction of each wall rays hit and map to right color.

  • Mapping textures to different wall directions done.

• At certain distances, only the top pixels of the walls seem to be from another texture.

  • Fixed: pix(x, y) were swapped in get_wall_hit calculations lol.

• Textures appear to be scrolling.

  • Fixed: See above.

• At certain angles, some walls seem to I guess.. crop? It just gets cut off. When walking past the wall, everything beyond that seems to disappear.

  • Fixed: Forgot to update the new position in the map. The variable was already declared.

• Audio forking is wrecking my imac bro.

  • Fixed: exit(0)

• Doors are making the game laggy.

  • Fixed: remove fsanitize ???

• Seele ani crashes game.

  • Not so fixed: Scrapped the idea and went with something else.