CS2261 LAB 07-Sprites Solution

Provided Files
● main.c
● myLib.c
● myLib.h
● spritesheet.bmp
● pikminBg.bmp
● pikminBg.c
● pikminBg.h
Files to Edit/Add
● main.c
● mylib.c
● spritesheet.c
● spritesheet.h
● makefile
● .vscode
○ tasks.json


Instructions
Note: Make sure to copy over your Makefile and .vscode/tasks.json from one of your previous assignments.
TODO 1.0 - Loading and Enabling Sprites Let’s set up sprites!
● TODO 1.0
○ In main.c, #include spritesheet.h
● TODO 1.1
○ In initialize(), load the spritesheet palette and tiles into their desired spaces in memory
■ HINT: The sprite palette is different from the background palette (check myLib.h)
■ HINT: Which charblock do sprite tiles go in?
● TODO 1.2
○ In myLib.c, complete hideSprites()
○ In main.c, uncomment the hideSprites() call
● TODO 1.3
○ In initialize(), enable sprites
● Build and run. You should not see anything new. If you see anything in the top-left (CORNERFACE), fix this before going further.

TODO 2.0
● At the bottom of initialize(), READ CAREFULLY all of the animation variables for the pikmin player
● Look back at the spritesheet to see how it is organized
TODO 2.1 - 2.9 - Animating Sprites
Let’s get the pikmin showing and his animations working!
● TODO 2.1
○ If the sprite is not idle:
■ Set the previous state to the current state
■ Then reset the pikmin’s state to idle
● TODO 2.2
○ Increment the pikmin’s current frame
○ HINT: there are only numFrames number of frames, and the frames of the animation must end up LOOPING
● TODO 2.3 - 2.6
○ Set the pikmin’s aniState accordingly
● TODO 2.7
○ If the pikmin is idle:
■ We want the current frame to be of the pikmin standing (frame 0) in whatever direction he was last facing (current state set to the previous state) ○ Else:
■ Increment the animation counter
● TODO 2.8
○ Set up all of the sprite attributes, place the sprite at index 0 of the shadowOAM
■ Look at myLib.h for sprite stuff!
○ Hint: Open up spritesheet.bmp and look at how the sprites are organized. Animation states correspond to columns, and frames are the rows of the spritesheet
○ Hint: this sprite is 32 x 32, you are going to need to do some multiplication when setting up ATTR2 TILEID
■ Each tile is 8x8
■ When the pikmin is idle, where does that correspond to on the spritesheet? (0,0) because the sprite begins at tile 0,0 and takes up 4 tiles wide and 4 tiles tall
● TODO 2.9
○ Copy the shadowOAM into the OAM
○ HINT:how many sprites can we have in the OAM? How many attributes does each sprite have?
○ Build and run. You should be able to walk the player pikmin around, see the background repeat and all while the player is at the bottom-center of the screen. If this is not the case, fix this before moving forward
TODO 3.0
● At the bottom of initialize(), READ CAREFULLY all of the animation variables for the buried pikmin
● Look back at the spritesheet to see how it is organized
TODO 3.1 - 3.9 - Animating Multiple Sprites
Let’s get multiple buried pikmin showing and animating! These sprites will all be doing the same animation (a single state) and it will be continuously looping, so no need to worry about checking for button inputs here!
● TODO 3.1
○ Increment each buried pikmin’s current frame of animation every 12 frames of gameplay
○ You will also need to increment each buried pikmin’s aniCounter
○ Refer to the code associated with TODO 2.2 for how to check for frames of gameplay
○ HINT: there are only numFrames number of frames, and the frames of the animation must end up LOOPING
● TODO 3.2
○ Loop through each buried pikmin and set up all of the sprite attributes
■ BE CAREFUL when placing the sprites in the shadowOAM as to not
overwrite where the player sprite is (shadowOAM[0])
■ Since we only have a single state for our buried pikmin, it’s col value of TILEID will not change. However, now we are starting from lower in the spritesheet, so we will need to add the starting tile row (12) to our curFrame value calculation
■ Look at myLib.h for sprite stuff!
○ Hint: Open up spritesheet.bmp and look at how the sprites are organized. Animation states correspond to columns, and frames are the rows of the spritesheet
○ Hint: this sprite is 16 x 16, you are going to need to do some multiplication when setting up ATTR2 TILEID for the curFrame
■ Each tile is 8x8
■ Where does the buried pikmin sprite start in the spritesheet? (0,12) -- in tiles. This location is the first frame of our buried pikmin
■ The sprite takes up 2 tiles wide and 2 tiles tall
● TODO 3.3
○ Build and run. You should now see 4 little buried pikmin at the bottom of the screen, their leaves animating continuously. They should follow the player, stuck at the bottom of the screen as the player pikmin moves.


You will know if it runs correctly if:
● You can walk the player around infinitely
● See your background repeat while the pikmin stays in the middle/bottom of the screen
● See the buried pikmin at the bottom of the screen continuously animate ● You DO NOT see corner face
Tips
● Follow each TODO in order, and only move forward if everything is correct


Submission Instructions
Zip up your entire project folder, including all source files, the Makefile, and everything produced during compilation ( including the .gba file). Submit this zip on Canvas. Name your submission Lab07_FirstameLastname, for example: “Lab07_RedPikmin.zip”.