CSC 4356 FINAL PROJECT
KEVIN CHERRY
 Class Techniques
 Shadow
 Normal Map
 Point Sprite
 Water / Mirror
 Spot / Point Light
 Common Techniques
 Skycube
 HUD
 Joystick
 Camera Bob When Walking
 Sound
 Collision Detection
 Custom Techniques
 Water Fade Off
 Uses code from notes
 Able to render for multiple objects
 Stores reversed view matrix in texture so I can get just
model matrix in shader
 Uses function that copies image file to GL texture index
 Diffuse and normal textures are handled in shader
 Easy to implement and looks great!
 Got starting code online
 Structs
 Sprite: GL texture unit, position, color, scale, texture
coordinates
 ASprite: Same but GL texture unit is array and texture count,
texture index, swap delay, and swap counter added
 Render
 Creates x,y positions for four vertices
 Binds sprite’s texture
 Uses triangle strip and texture coordinates
 Rendered last so texture’s alpha is blended with scene
 ASprite for animation
 3 images swapped every 80 milliseconds
 Same as in project 3
 Not as good looking though?
 Perhaps needs more for it to refract?
 Uses water reflection code
 Tricky at first
 Must flip over the clipping plane axis
 This and reflection in water is the only time you can see
player
 Couldn’t get spotlight working
 Instead objects lit by multiplying white vector based on
camera distance in fragment shader
 Light flickers with time to simulate fire from match
 Light gradually takes effect as match comes up/down
 Easy to add to scene, hard to get texture mapped right
 Most sky cube textures online have small problems
 Mapped in Wings and carefully touched up
 Moves with player so player never escapes
 Had a lot of problems at first, but then realized a simple
solution:
 Pop any model tranformations
 Reverse view transformations in opposite order
 Perform HUD translations
 Render
 Uses glutJoystickFunc with poll interval of 15
 Uses unsigned int as bit mask for buttons
 Works for any joystick (buttons will be different)
 Problem: Glut only recognizes 3 axis
 Solution: Glfw
 In joystick mapped function, glfw used for 4 axis values
 Axis values alter same code as mouse movement
 Axis values [-1, 1]
 Deadzone set to 0.2
 Can switch from joystick to keyboard and mouse while
game is running
 Each switch resets movement values
 Switches automatically to keyboard and mouse if
joystick is disconnected
 Common technique used in majority of games
 Running increases bobbing rate
 Increases a value as you walk
 Uses sin of value converted to radians for y displacement
 Uses FMOD Ex
 Used for footsteps
 Triggered when y deviation is less than threshold
 Checks camera’s position relative to custom 2D squares
 Squares are expressed as center XZ position along with
width and depth
 If camera is within square
 Check distance to all edges
 Move to outside of that edge
 Without this, can see where water is cut by skycube
 With it, water fades off and seems to continue off into
the distance
 Accomplished in shader
 More realistic water
 More sounds
 Background music?
 Lens flare?
 Recursive mirror rendering
 More scenary