raycaster

Raycaster in C by David Quarel

Dependencies

Ubuntu:
	sudo apt-get install make gcc libsdl2-dev libsdl2-ttf-dev libsdl2-image-dev
Arch:
	pacman -S make(?) gcc sdl2 sdl2_gfx sdl2_ttf sdl_image (???)

How to run

Compile with make, then run ./bin/ray.

How to play

• W - Move Forward
• S - Move backward
• A - Strafe left
• D - Strafe right
• LEFT - Rotate left
• RIGHT - Rotate right
• Q - decrease FOV
• E - increase FOV
• M - toggle minimap
• K - increase minimap size
• L - decrease minimap size
• P - toggle show game status
• KEYPAD_8 - move minimap up
• KEYPAD_5 - move minimap down
• KEYPAD_4 - move minimap left
• KEYPAD_6 - move minimap right

TODO Now

• Algorithm to cast rays is inefficient, and takes little 0.01 steps forward till it hits a wall. Use Bresenhams line algorithm and some maths to make it fast. DONE
• New faster raycasting algorithm seems to still have some minor distortion after correcting for fisheye effect. Investigate cause and fix.
• Make movement adjust player acceleration rather than velocity, and add friction so player movement feels more natural as compared to abrupt movement.
• Game only updates where you hit WASD or LEFT/RIGHT. Eventually want it to run at 30/60fps, and you hold WASD to constantly move in that direction, and look using the mouse. Half-Done
• Learn how to and then implement texture mapping. Grey walls are boring Stripey walls are less boring. Done, but it needs to be more efficient.
• Don't draw walls outside view area. Done? Needs to be verified.
• Add the ability for the minimap to draw the rays that have been cast DONE
• Add collisions with walls DONE
• Change the format for texture mapping rather than reinventing the wheel.
• Change the format of the map to have different kinds of walls that are texture mapped in different ways.

TODO Someday

• Add something for the player to interact with (items, monsters)
• Texture map the sky and the floor.
• Make some interesting maps, refactor to allow different levels to be loaded from a file.
• Add some music/SFX from open domain material.
• Work out how to load lots of textures sensibly as .pngs
• Add support for sprites to draw the player and things in the world.
• Add multiplayer mode (split screen? multiple SDL windows?)
• Add network support for multiplayer over LAN