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Phobos/game.asm
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jjanella aa5f44700f updated links
2025-04-10 22:19:23 -04:00

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# 1010412215 janellaj
#####################################################################
#
# CSCB58 Winter 2025 Assembly Final Project
# University of Toronto, Scarborough
#
# Student: Jeremy Janella, 1010412215, janellaj, jeremy.janella@mail.utoronto.ca
# # Bitmap Display Configuration:
# - Unit width in pixels: 8
# - Unit height in pixels: 8
# - Display width in pixels: 1024
# - Display height in pixels: 512
# - Base Address for Display: 0x10008000 ($gp)
#
# Which milestoneshave been reached in this submission?
# - Milestone All
#
# Which approved features have been implemented for milestone 4?
# 1. Enemies shoot back
# 2. Levels
# 3. Shoot enemies (with the thruster (on the lighter color))
# 4. Moving/hiding platforms (between levels)
# # Link to video demonstration for final submission:
# Video - https://github.com/jjanella/Phobos/blob/main/demo.mp4
# Github - https://github.com/jjanella/Phobos
# # Are you OK with us sharing the video with people outside course staff? # yes
# # Any additional information that the TA needs to know:
# - The menus have a bug where pressing r/q is delayed - this is soemthing wrong with mars
# because the code has no issues, there is just input delay freezes. The code in question
# is from the winp: tag to the first branch after it. It seems to have fixed itself nvm.
#
# - Legs dont take collision damage from terrain, only the body
#
# - The last fuel barell is very hard to get but its not needed to win, none of them are needed technically they just improve your score.
#####################################################################
.data
newline: .asciiz "\n"
# Store the offsets from the ship position. First 2 are pod, second 4 are service module, last 2 are legs. 8 pixels total
S: .word 4 8 516 520 1028 1032 1536 1548
bSpawn: .word 0
# Store the screen behind the ship
BH: .word 0:8
# Store the screen behind the plume
BHP: .word 0:8
PLMPOS: .word 0 # psoition of the plume
EPLM: .word 0 # should erase the plume?
DESTROYED: .word 0 # keeps track of if the enemy is destoryed
.eqv BASE_ADDRESS 0x10008000
.text
main:
li $s0, BASE_ADDRESS # $s0 stores the base address for display
addi $s1, $s0, 28188 # initial spawn location
# s1 is set later, ship position (including base address)
li $s2, 0 # s2 is the sub pixel y position, mod4
li $s3, 0 # s3 is the x velocity
li $s4, 0 # s4 is the current level
li $s5, 0 # s5 stores subpixel y velocity
li $s6, 0x80 # initial fuel = 8*16 / 16*16 - 1
jal cBH # clear behind the ship
jal lev0
mainlo: # Main Game loop
# Read if input was sent
li $t0, 0xffff0000
lw $t1, 0($t0)
beq $t1, 1, inp # Apply input
main1: # Apply gravity to velocity if not landed
addi $s5, $s5, 1 # Add gravity to vertical velocity
jal land
beqz $v0, main2 # if not landed: skip
blez $s5, main2 # if ascending: skip
li $s3, 0
li $s5, 0
bgtz $s6, main2 # if fuel remains: skip
li $a0, 2
j dsc # yer done - no fuel
main2:
# Sleep, 25ms, 40Hz
li $a0, 25
li $v0, 32
syscall
# Erase plume if instructed
la $t0 EPLM
lw $t1 0($t0)
beqz $t1 main3
li $t1 0 # Reset instruction
sw $t1, 0($t0)
# Redraw the bakcground
lw $t1, PLMPOS
lw $t0 BHP # Layer 1
sw $t0 1540($t1)
lw $t0 BHP+4
sw $t0 1544($t1)
addi $t2, $s0, 31220
bgt $t1, $t2, main3
lw $t0 BHP+8 # Layer 2
sw $t0 2052($t1)
lw $t0 BHP+12
sw $t0 2056($t1)
addi $t2, $t2, -512
bgt $t1, $t2, main3
lw $t0 BHP+16 # Layer 3
sw $t0 2564($t1)
lw $t0 BHP+20
sw $t0 2568($t1)
addi $t2, $t2, -512
bgt $t1, $t2, main3
lw $t0 BHP+24 # Layer 4
sw $t0 3076($t1)
lw $t0 BHP+28
sw $t0 3080($t1)
# Check if turret is destroyed
li $t9, 0xa4a4a4 # t9 stores light grey for detecting turret
li $t0 0
maindl: lw $t1 BHP($t0)
beq $t1 $t9 turd
addi $t0 $t0 4
bne $t0 32 maindl
j main3
turd: # "Turret detected"
li $t0 1
sw $t0 DESTROYED
addi $a0 $s0 21400
beq $s4 0 ktur
addi $a0 $s0 14276
beq $s4 1 ktur
addi $a0 $s0 21252
beq $s4 2 ktur
j main3 # this line should never be reached
main3: # Draw changes
jal dbul
jal mship
j mainlo
winp: # Wait for input restart or quit
li $a0, 100
li $v0, 32
syscall
li $t0, 0xffff0000
lw $t1, 0($t0)
beqz $t1, winp # Apply input
lw $t0, 4($t0) # t0 = Ascii
beq $t0, 114, winpr
beq $t0, 113, winpq
j winp
winpr:# reset if r if pressed
j main
winpq:# Exit if q if pressed
li $v0, 10 # terminate the program gracefully
syscall
inp: # Handle input
lw $t0, 4($t0) # t0 = ascii code of input
beq $t0, 114, inpr
beq $t0, 113, inpq
blez $s6, main1 # no options if no fuel
beq $t0, 97, inpa
beq $t0, 119, inpw
beq $t0, 100, inpd
j main1 # return to main loop
inpa: # accelerate left is pushed
addi $s3, $s3, -4
addi $s6, $s6, -4
jal ubar
j mainlo
inpw: # increase thrust is pushed
addi $s5, $s5, -32
addi $s6, $s6, -8
jal ubar
blez $s6 mainlo # skip plume if no fuel
jal dplm # notify mainloop to clear plume
li $t0 1
sw $t0, EPLM
sw $s1, PLMPOS
j mainlo
inpd: # accelerate right is pushed
addi $s3, $s3, 4
addi $s6, $s6, -4
jal ubar
j mainlo
inpr:# reset if r if pressed
j main
inpq:# Exit if q if pressed
li $v0, 10 # terminate the program gracefully
syscall
lev0: # Prepare level 0
sw $zero DESTROYED
la $a0, ($s0)
jal ss # Clear the screen
addi $a0, $s0, 27900 # Draw the large platform
jal dlp
addi $a0, $s0, 27088 # Draw a landing pad on the large platform
li $a1, 0xdf9213 # Success color
jal dland
addi $a0, $s0, 16512 # Draw small platform 1
jal dsp
addi $a0, $s0, 13964 # Draw a fuel barell on small platform 1
jal dfuel
addi $a0, $s0, 22940 # Draw small platform 2
jal dsp
addi $a0, $s0, 21400 # Draw an enemy on small platform 2
jal dtur
addi $a0, $s0, 30220 # Draw medium platform
jal dmp
addi $s7, $s0, 21908 # Set the bullets positon and spawn
sw $s7, bSpawn
j mainlo
lev1: # Prepare level 1
sw $zero DESTROYED
la $a0, ($s0)
jal ss # Clear the screen
addi $a0, $s0, 27900 # Draw the large platform
jal dlp
addi $a0, $s0, 27088 # Draw a landing pad on the large platform
li $a1, 0x7e848f # Start color
jal dland
addi $a0, $s0, 15400 # Draw small platform
jal dsp
addi $a0, $s0, 25620 # Draw small platform
jal dsp
addi $a0, $s0, 14276 # Draw turret
jal dtur
addi $s7, $s0, 14784 # Set the bullets positon and spawn
sw $s7, bSpawn
addi $a0, $s0, 15800 # Draw medium platform
jal dmp
addi $a0, $s0, 23072 # Draw fuel
jal dfuel
addi $a0, $s0, 15400 # Draw a landing pad on the small platform
li $a1, 0xdf9213 # Succes color
jal dland
j mainlo
lev2: # Prepare level 2
sw $zero DESTROYED
la $a0, ($s0)
jal ss # Clear the screen
addi $a0, $s0, 4860 # Draw the large platform
jal dlp
addi $a0, $s0, 15400 # Draw small platform
jal dsp
li $a1, 0x7e848f # Start color
addi $a0, $s0, 15400 # Draw a landing pad
jal dland
addi $a0, $s0, 11164 # Draw small platform
jal dsp
li $a1, 0xdf9213 # Succes color
addi $a0, $s0, 11164 # Draw a landing pad
jal dland
addi $a0, $s0, 22768 # Draw medium platform
jal dmp
addi $a0, $s0, 21252 # Draw turret
jal dtur
addi $s7, $s0, 21760 # Set the bullets positon and spawn
sw $s7, bSpawn
addi $a0, $s0, 2300 # Draw fuel
jal dfuel
#jal dland
j mainlo
cBH: # Clean behind ship buffer
la $t0, BH # &B[i]
li $t1, 0 # Counter
li $t9, 0 # Draw black into the behind ship buffer
cBH1: sw $t9, 0($t0) # B[i] = black
addi $t1, $t1, 1
addi $t0, $t0, 4
bne $t1, 8, cBH1
cBH2: jr $ra
ss: # Set the screen
li $t9, 0x0 # t9 holds the background color
li $t0, 0
ssl: add $t1, $t0, $a0
sw ,$t9, ($t1)
addi $t0, $t0, 4
beq $t0, 32768, dbar # draw bar ui
j ssl
ubar: # update the fuel bar
li $t7, 0x002e00 # partial square color
li $t8, 0x0 # t8 = black
li $t9, 0xff8800 # t9 = orange
add $t0, $s0, 20476 # bottom of gauge
li $t2, 0 # counter
blt $s6, 0x10, ubarl1
la $t1, ($s6) # t1 = fuel
ubarlo: sw $t9, 0($t0) # Draw the orange
addi $t0, $t0, -512
addi $t1, $t1, -0x10
addi $t2, $t2, 1
bge $t1, 0x10, ubarlo
ubarl1: blez $t1, ubarla # Draw partial square
addi $t1, $t1, -0x01
addi $t7, $t7, 0x110600
j ubarl1
ubarla: bge $t2, 16, ubare
beq $t7, 0x113400, ubarl2
sw $t7, 0($t0) # Draw partial
addi $t0, $t0, -512
addi $t2, $t2, 1
ubarl2: bge $t2, 16, ubare
sw $t8, 0($t0)
addi $t0, $t0, -512
addi $t2, $t2, 1
blt $t2, 16, ubarl2
ubare: jr $ra
dbar: li $t7, 0x0 # t7 = black
li $t8, 0x828282 # t8 = dark grey
li $t9, 0xff8800 # t9 = orange
addi $t0, $s0, 12280 # t0 = base address
sw $t8, 0($t0)
sw $t8, 4($t0)
addi $t0, $t0, 512
li $t1, 0 # t1 = counter
dbar1: sw $t8, 0($t0)
sw $t7, 4($t0)
addi $t0, $t0, 512
addi $t1, $t1, 1
bne $t1, 16, dbar1
sw $t8, 0($t0)
sw $t8, 4($t0)
sw $t9, -2048($t0)
sw $t9, -4096($t0)
sw $t9, -6144($t0)
j ubar # update the bar then enter the gameloop
dsp: # Draw small platform. Topleft address is stored in $a0. $a0 is not modified
li $t8, 0xa4b0c8 # t8 stores blue-grey
li $t9, 0x7e848f # t9 stores grey
sw $t9, 0($a0) # Layer 1
sw $t8, 4($a0)
sw $t8, 8($a0)
sw $t8, 12($a0)
sw $t8, 16($a0)
sw $t8, 20($a0)
sw $t8, 24($a0)
sw $t8, 28($a0)
sw $t8, 32($a0)
sw $t9, 36($a0)
sw $t9, 516($a0) # Layer 2
sw $t9, 520($a0)
sw $t8, 524($a0)
sw $t8, 528($a0)
sw $t8, 532($a0)
sw $t8, 536($a0)
sw $t9, 540($a0)
sw $t9, 544($a0)
sw $t9, 1036($a0) # Layer 3
sw $t9, 1040($a0)
sw $t9, 1044($a0)
sw $t9, 1048($a0)
jr $ra
dmp: # Draw medium platform. Topleft address is stored in $a0. $a0 is not modified
li $t8, 0xa4b0c8 # t8 stores blue-grey
li $t9, 0x7e848f # t9 stores grey
sw $t9, 0($a0) # Layer 1
sw $t8, 4($a0)
sw $t8, 8($a0)
sw $t8, 12($a0)
sw $t8, 16($a0)
sw $t8, 20($a0)
sw $t8, 24($a0)
sw $t8, 28($a0)
sw $t8, 32($a0)
sw $t8, 36($a0)
sw $t8, 40($a0)
sw $t8, 44($a0)
sw $t8, 48($a0)
sw $t8, 52($a0)
sw $t8, 56($a0)
sw $t9, 60($a0)
sw $t9, 516($a0) # Layer 2
sw $t9, 520($a0)
sw $t9, 524($a0)
sw $t9, 528($a0)
sw $t9, 532($a0)
sw $t9, 536($a0)
sw $t9, 540($a0)
sw $t8, 544($a0)
sw $t8, 548($a0)
sw $t8, 552($a0)
sw $t8, 556($a0)
sw $t8, 560($a0)
sw $t8, 564($a0)
sw $t8, 568($a0)
sw $t9, 572($a0)
sw $t9, 1056($a0) # Layer 3
sw $t9, 1060($a0)
sw $t9, 1064($a0)
sw $t9, 1068($a0)
sw $t9, 1072($a0)
sw $t9, 1076($a0)
sw $t9, 1080($a0)
jr $ra
dlp: # Display large platform. Topleft address is stored in $a0. $a0 is not modified
li $t8, 0xa4b0c8 # t8 stores blue-grey
li $t9, 0x7e848f # t9 stores grey
sw $t9, 0($a0) # Draw the left three levels
sw $t8, 4($a0)
sw $t8, 8($a0)
sw $t9, 516($a0)
sw $t8, 520($a0)
sw $t9, 1032($a0)
la $t0, ($a0)
addi $t0, $t0, 12
li $t1 0
dlp0: sw $t8 0($t0) # Draw 61 more horizontal levels
sw $t8 512($t0)
sw $t8 1024($t0)
sw $t9 1536($t0)
beq $t1, 61, dlp1
addi $t1, $t1, 1
addi $t0, $t0, 4
j dlp0
dlp1: jr $ra
dship: # Draw ship. Topleft address is stored in $s1. $s1 is not modified
li $t7, 0x828282 # t7 stores dark grey
li $t8, 0xa4a4a4 # t8 stores light grey
li $t9, 0xdf9213 # t9 stores gold-bronze
# Draw the ship using values from the ship list
li $t3, 0 # counter i
la $t0, S # t0 = &S
# Draw the first 8
dship1: lw $t1, 0($t0) # t1 = S[i]
add $t2, $s1, $t1 # t2 = &write_to
sw $t8, 0($t2) # write the pixel
addi $t0, $t0, 4
addi $t3, $t3, 1
bne $t3, 2, dship1
dship2: lw $t1, 0($t0) # t1 = S[i]
add $t2, $s1, $t1 # t2 = &write_to
sw $t9, 0($t2) # write the pixel
addi $t0, $t0, 4
addi $t3, $t3, 1
bne $t3, 6, dship2
dship3: lw $t1, 0($t0) # t1 = S[i]
add $t2, $s1, $t1 # t2 = &write_to
sw $t7, 0($t2) # write the pixel
addi $t0, $t0, 4
addi $t3, $t3, 1
bne $t3, 8, dship3
jr $ra
dplm: # Draw the ships thrust plume. Topleft is address of ships drawn address.
li $t7 0xff0000 # t7 stores red
li $t8 0xff8800 # t8 stores orange
li $t9 0xffe100 # t9 stores yellow
la $t6, BHP
sw $s1 PLMPOS
# Save whats possible
# Draw whats possible
# Overwrite later
lw $t0, 1540($s1) # Layer 1
sw $t0, 0($t6)
lw $t0, 1544($s1)
sw $t0, 4($t6)
addi $t1, $s0, 31220 # Layer 2
bgt $s1, $t1, dplm1
lw $t0 2052($s1)
sw $t0, 8($t6)
lw $t0 2056($s1)
sw $t0, 12($t6)
addi $t1, $t1, -512 # Layer 3
bgt $s1, $t1, dplm1
lw $t0 2564($s1)
sw $t0, 16($t6)
lw $t0 2568($s1)
sw $t0, 20($t6)
addi $t1, $t1, -512 # Layer 4
bgt $s1, $t1, dplm1
lw $t0 3076($s1)
sw $t0, 24($t6)
lw $t0 3080($s1)
sw $t0, 28($t6)
dplm1:
sw $t7 1540($s1) # Layer 1
sw $t7 1544($s1)
addi $t0, $s0, 31220
bgt $s1, $t0, dplm5
sw $t8 2052($s1) # Layer 2
sw $t8 2056($s1)
addi $t0, $t0, -512
bgt $s1, $t0, dplm5
sw $t9 2564($s1) # Layer 3
sw $t9 2568($s1)
addi $t0, $t0, -512
bgt $s1, $t0, dplm5
sw $t9 3076($s1) # Layer 4
sw $t9 3080($s1)
dplm5:
jr $ra
dtur: # Draw a turret. Topleft address is stored in $a0. $a0 is not modified
li $t8, 0x828282 # t8 stores dark grey
li $t9, 0xa4a4a4 # t9 stores light grey
sw $t8, 20($a0) # Layer 1
sw $t8, 24($a0)
sw $t8, 28($a0)
sw $t8, 512($a0) # Layer 2
sw $t8, 516($a0)
sw $t8, 520($a0)
sw $t8, 524($a0)
sw $t8, 528($a0)
sw $t9, 532($a0)
sw $t9, 536($a0)
sw $t9, 540($a0)
sw $t8, 544($a0)
sw $t8, 1036($a0) # Layer 3
sw $t9, 1040($a0)
sw $t9, 1044($a0)
sw $t9, 1048($a0)
sw $t9, 1052($a0)
sw $t9, 1056($a0)
sw $t8, 1060($a0)
jr $ra
ktur: # Draw a killed turret
li $t7, 0x0 # t7 stores black
li $t8, 0x828282 # t8 stores dark grey
li $t9, 0xa4a4a4 # t9 stores light grey
sw $t8, 20($a0) # Layer 1
sw $t8, 24($a0)
sw $t7, 28($a0)
sw $t7, 512($a0) # Layer 2
sw $t7, 516($a0)
sw $t7, 520($a0)
sw $t7, 524($a0)
sw $t8, 528($a0)
sw $t8, 532($a0)
sw $t9, 536($a0)
sw $t8, 540($a0)
sw $t8, 544($a0)
sw $t8, 1032($a0) # Layer 3
sw $t8, 1036($a0)
sw $t7, 1040($a0)
sw $t8, 1044($a0)
sw $t8, 1048($a0)
sw $t9, 1052($a0)
sw $t9, 1056($a0)
sw $t8, 1060($a0)
j main3
dbul: # Draw a bullet. Topleft address is stored in $s7. $s7 is modified left.
li $t8 0xff0000 # t8 stores red
li $t9 0x0 # t9 = black
lw $t0, 0($s7)
lw $t1, 4($s7)
#bnez $t0, dbul1
sw $t8, 0($s7)
dbul1: bne $t1, $t8, dbul2
sw $t9, 4($s7)
dbul2: beqz $t0, dbul3
li $a0, 1
beq $t0, 0x828282, dsc # dark grey
beq $t0, 0xa4a4a4, dsc # light grey
beq $t0, 0xdf9213, dsc # gold-bronze
dbul3: sub $t0, $s7, $s0 # t0 = screen pos
andi $t0, $t0, 511 # t0 = screen x pos
bne $t0, 508, dbul4
sw $t9 0($s7)
lw $t5 DESTROYED
beq $t5 1 dbul5
lw $s7 bSpawn
sw $t8 0($s7)
dbul4: addi $s7, $s7, -4
dbul5: jr $ra
dfuel: # Draw a fuel barrel. Topleft address is stored in $a0. $a0 is not modified
li $t8 0xfd2f2e # t8 stores red
li $t9 0xff8800 # t9 stores orange
sw $t8 0($a0) # Level 1
sw $t8 4($a0)
sw $t8 8($a0)
sw $t8 12($a0)
sw $t8 512($a0) # Level 2
sw $t8 516($a0)
sw $t8 520($a0)
sw $t8 524($a0)
sw $t9 1024($a0) # Level 3
sw $t9 1028($a0)
sw $t9 1032($a0)
sw $t9 1036($a0)
sw $t9 1536($a0) # Level 4
sw $t9 1540($a0)
sw $t9 1544($a0)
sw $t9 1548($a0)
sw $t8 2048($a0) # Level 5
sw $t8 2052($a0)
sw $t8 2056($a0)
sw $t8 2060($a0)
jr $ra
dland: # Draw a landing pad. Topleft address is stored in $a0. $a0 is not modified
la $t9, ($a1) # t9 stores light grey
sw $t9, 0($a0) # Draw the 6 edge pixels
sw $t9, 4($a0)
sw $t9, 516($a0)
sw $t9, 32($a0)
sw $t9, 36($a0)
sw $t9, 544($a0)
addi $t0, $a0, 8
li $t1 0
dland0: sw $t9 0($t0) # Draw 6 more horizontal levels
sw $t9 512($t0)
beq $t1, 5, dland1
addi $t1, $t1, 1
addi $t0, $t0, 4
j dland0
dland1: jr $ra
land: # Return 1 in v0 iff spaceship is landed. Checks $s1 for the ships position. Landed iff neither black or white under both feet
lw $t0, 2048($s1) # Load the pixel under left leg
lw $t1, 2060($s1) # Load the pixel under right leg
beq $t0, 0xdf9213, landw # Win land true if on bronze
beq $t1, 0xdf9213, landw
beq $t0, 0xa4b0c8, landtr# Can land on platform or bronze
beq $t0, 0x7e848f, landtr
beq $t1, 0xa4b0c8, landtr
beq $t1, 0x7e848f, landtr
li $v0, 0
jr $ra
landtr: li $v0, 1
jr $ra
landw:# Handle landing on the win platform
bne $s4, 2, dsc4 # if level 2 dont bother with the menus
li $a0, 0
j dsc
dsc: # Draw the final screen with fuel score in the background. a0=0-passed 1-kia 2-mia
addi $t0, $s0, 11964 # t0 = base address
li $t7, 0xffffff # t7 = white
la $a1, ($t0)
la $a2, ($t7)
jal dscrow
addi $t0, $t0, 512
li $t1, 0 # counter
dsc1: la $a1, ($t0) # pass address
li $a2, 0x0 # default black
bnez $a0, dsc2 # fancy if passed
lw $a2, 320($t0) # copy the color from the far right bar at the same height lol
dsc2: jal dscrow
addi $t0, $t0, 512
addi $t1, $t1, 1
bne $t1, 16, dsc1
la $a1, ($t0)
la $a2, ($t7)
jal dscrow
beq $a0, 0, dscmp
beq $a0, 1, dsck
beq $a0, 2, dscm
dsc3: beqz $a0, dsc4
j winp # return back to reset if anything but a win
dsc4: addi $s4, $s4, 1 # draw next level if passed
beq $s4, 1 lev1
beq $s4, 2 lev2
j winp
dscrow: # Draws a row at a1 on the win screen, filling with color a2
sw $t7, 0($a1)
li $t6, 0
li $t6, 1 # counter
dscrow1:addi $a1, $a1, 4
addi $t6, $t6, 1
sw $a2, 0($a1)
bne $t6, 33, dscrow1
sw $t7, 4($a1)
jr $ra
dscm: # Draw MIA
addi $t1, $s0, 11964
li $t0, 0xffffff # Text color
sw $t0, 3624($t1) # Layer 1
sw $t0, 3640($t1)
sw $t0, 3648($t1)
sw $t0, 3652($t1)
sw $t0, 3656($t1)
sw $t0, 3664($t1)
sw $t0, 3668($t1)
sw $t0, 3672($t1)
sw $t0, 4136($t1) # Layer 2
sw $t0, 4140($t1)
sw $t0, 4148($t1)
sw $t0, 4152($t1)
sw $t0, 4164($t1)
sw $t0, 4176($t1)
sw $t0, 4184($t1)
sw $t0, 4648($t1) # Layer 3
sw $t0, 4656($t1)
sw $t0, 4664($t1)
sw $t0, 4676($t1)
sw $t0, 4688($t1)
sw $t0, 4692($t1)
sw $t0, 4696($t1)
sw $t0, 5160($t1) # Layer 4
sw $t0, 5176($t1)
sw $t0, 5188($t1)
sw $t0, 5200($t1)
sw $t0, 5208($t1)
sw $t0, 5672($t1) # Layer 5
sw $t0, 5688($t1)
sw $t0, 5696($t1)
sw $t0, 5700($t1)
sw $t0, 5704($t1)
sw $t0, 5712($t1)
sw $t0, 5720($t1)
j dsc3
dsck: # Draw KIA
addi $t1, $s0, 11964
li $t0, 0xffffff # Text color
sw $t0, 3628($t1) # Layer 1
sw $t0, 3640($t1)
sw $t0, 3648($t1)
sw $t0, 3652($t1)
sw $t0, 3656($t1)
sw $t0, 3664($t1)
sw $t0, 3668($t1)
sw $t0, 3672($t1)
sw $t0, 4140($t1) # Layer 2
sw $t0, 4148($t1)
sw $t0, 4164($t1)
sw $t0, 4176($t1)
sw $t0, 4184($t1)
sw $t0, 4652($t1) # Layer 3
sw $t0, 4656($t1)
sw $t0, 4676($t1)
sw $t0, 4688($t1)
sw $t0, 4692($t1)
sw $t0, 4696($t1)
sw $t0, 5164($t1) # Layer 4
sw $t0, 5172($t1)
sw $t0, 5188($t1)
sw $t0, 5200($t1)
sw $t0, 5208($t1)
sw $t0, 5676($t1) # Layer 5
sw $t0, 5688($t1)
sw $t0, 5696($t1)
sw $t0, 5700($t1)
sw $t0, 5704($t1)
sw $t0, 5712($t1)
sw $t0, 5720($t1)
j dsc3
dscmp: # Draws mission passed onto the screen
addi $t1, $s0, 11964
li $t0, 0xffffff # Text color
sw $t0, 1544($t1) # Layer 1
sw $t0, 1560($t1)
sw $t0, 1568($t1)
sw $t0, 1572($t1)
sw $t0, 1576($t1)
sw $t0, 1584($t1)
sw $t0, 1588($t1)
sw $t0, 1592($t1)
sw $t0, 1600($t1)
sw $t0, 1604($t1)
sw $t0, 1608($t1)
sw $t0, 1616($t1)
sw $t0, 1620($t1)
sw $t0, 1624($t1)
sw $t0, 1632($t1)
sw $t0, 1636($t1)
sw $t0, 1640($t1)
sw $t0, 1648($t1)
sw $t0, 1660($t1)
sw $t0, 2056($t1) # Layer 2
sw $t0, 2060($t1)
sw $t0, 2068($t1)
sw $t0, 2072($t1)
sw $t0, 2084($t1)
sw $t0, 2096($t1)
sw $t0, 2112($t1)
sw $t0, 2132($t1)
sw $t0, 2144($t1)
sw $t0, 2152($t1)
sw $t0, 2160($t1)
sw $t0, 2164($t1)
sw $t0, 2172($t1)
sw $t0, 2568($t1) # Layer 3
sw $t0, 2576($t1)
sw $t0, 2584($t1)
sw $t0, 2596($t1)
sw $t0, 2608($t1)
sw $t0, 2612($t1)
sw $t0, 2616($t1)
sw $t0, 2624($t1)
sw $t0, 2628($t1)
sw $t0, 2632($t1)
sw $t0, 2644($t1)
sw $t0, 2656($t1)
sw $t0, 2664($t1)
sw $t0, 2672($t1)
sw $t0, 2676($t1)
sw $t0, 2680($t1)
sw $t0, 2684($t1)
sw $t0, 3080($t1) # Layer 4
sw $t0, 3096($t1)
sw $t0, 3108($t1)
sw $t0, 3128($t1)
sw $t0, 3144($t1)
sw $t0, 3156($t1)
sw $t0, 3168($t1)
sw $t0, 3176($t1)
sw $t0, 3184($t1)
sw $t0, 3192($t1)
sw $t0, 3196($t1)
sw $t0, 3592($t1) # Layer 5
sw $t0, 3608($t1)
sw $t0, 3616($t1)
sw $t0, 3620($t1)
sw $t0, 3624($t1)
sw $t0, 3632($t1)
sw $t0, 3636($t1)
sw $t0, 3640($t1)
sw $t0, 3648($t1)
sw $t0, 3652($t1)
sw $t0, 3656($t1)
sw $t0, 3664($t1)
sw $t0, 3668($t1)
sw $t0, 3672($t1)
sw $t0, 3680($t1)
sw $t0, 3684($t1)
sw $t0, 3688($t1)
sw $t0, 3696($t1)
sw $t0, 3708($t1)
sw $t0, 5144($t1) # Layer 6
sw $t0, 5148($t1)
sw $t0, 5152($t1)
sw $t0, 5160($t1)
sw $t0, 5164($t1)
sw $t0, 5168($t1)
sw $t0, 5176($t1)
sw $t0, 5180($t1)
sw $t0, 5184($t1)
sw $t0, 5192($t1)
sw $t0, 5196($t1)
sw $t0, 5200($t1)
sw $t0, 5208($t1)
sw $t0, 5212($t1)
sw $t0, 5216($t1)
sw $t0, 5224($t1)
sw $t0, 5228($t1)
sw $t0, 5656($t1) # Layer 7
sw $t0, 5664($t1)
sw $t0, 5672($t1)
sw $t0, 5680($t1)
sw $t0, 5688($t1)
sw $t0, 5704($t1)
sw $t0, 5720($t1)
sw $t0, 5736($t1)
sw $t0, 5744($t1)
sw $t0, 6168($t1) # Layer 8
sw $t0, 6172($t1)
sw $t0, 6176($t1)
sw $t0, 6184($t1)
sw $t0, 6188($t1)
sw $t0, 6192($t1)
sw $t0, 6200($t1)
sw $t0, 6204($t1)
sw $t0, 6208($t1)
sw $t0, 6216($t1)
sw $t0, 6220($t1)
sw $t0, 6224($t1)
sw $t0, 6232($t1)
sw $t0, 6236($t1)
sw $t0, 6248($t1)
sw $t0, 6256($t1)
sw $t0, 6680($t1) # Layer 9
sw $t0, 6696($t1)
sw $t0, 6704($t1)
sw $t0, 6720($t1)
sw $t0, 6736($t1)
sw $t0, 6744($t1)
sw $t0, 6760($t1)
sw $t0, 6768($t1)
sw $t0, 7192($t1) # Layer 10
sw $t0, 7208($t1)
sw $t0, 7216($t1)
sw $t0, 7224($t1)
sw $t0, 7228($t1)
sw $t0, 7232($t1)
sw $t0, 7240($t1)
sw $t0, 7244($t1)
sw $t0, 7248($t1)
sw $t0, 7256($t1)
sw $t0, 7260($t1)
sw $t0, 7264($t1)
sw $t0, 7272($t1)
sw $t0, 7276($t1)
j dsc3
mship : # move the ship (in $s1) by ($a0, $a1).
# 1. Write the saved pixel over the ship
# 2. save the pixels in the new position
# 3. draw the ship in the new position
# if at any point a strong collision is detected, return 1
# otherwise return 0
addi $sp, $sp, -4
sw $ra, 0($sp)
# 1. Write the saved pixel over the ship
la $t0, S # t0 = &S
la $t4, BH # t4 = $BH
li $t3, 0 # counter i
mship1: lw $t1, 0($t0) # t1 = S[i]
add $t2, $s1, $t1 # t2 = &(S[i] pixel)
lw $t5, 0($t4) # t5 = BH[i]
sw $t5, 0($t2) # write t5 to S[i] pixel
addi $t0, $t0, 4
addi $t4, $t4, 4
addi $t3, $t3, 1
bne $t3, 8, mship1
# X before move
sub $t5, $s1, $s0
andi $t5, $t5, 511
bge $t5, 500, main
# Calculate the new position, vert velocity is 1/32 as fast as whatever is stored to allow more granularity
add $s1, $s1, $s3 # position accumulates x velocity
add $s2, $s2, $s5 # y subpix pos += y subpix vel
andi $t0, $s2, 0xffffffe0
andi $s2, $s2, 0x0000001f
sll $t0, $t0, 4
add $s1, $s1, $t0
# X after move
li $a0, 2 # premeptive if out of screen
sub $t6, $s1, $s0
andi $t6, $t6, 511
bge $t6, 500, dsc
# Difference should equal x velocity, otherwise hit an edge
sub $t0, $t6, $t5
bne $t0, $s3, dsc # MIA
# Reset if the player is out of screen
blt $s1, $s0, dsc
addi $t0, $s0, 31220
bgt $s1, $t0, dsc
# 2. save the pixels in the new position
mships: li $t3, 0 # counter i
la $t0, S # t0 = &S
la $t4, BH # t4 = $BH
li $t5, 0 # t5 = 1 otherwise
mship2: lw $t1, 0($t0) # t1 = S[i]
add $t2, $s1, $t1 # t2 = &(S[i] pixel)
lw $t2, 0($t2) # t2 = S[i] pixel
sw $t2, 0($t4) # BH[i] = t2
beq $t2, 0xa4b0c8, mshipc # if color is platform, note it as a colision
beq $t2, 0x7e848f, mshipc
beq $t2, 0xdf9213, mshipc
beq $t2, 0xfd2f2e, mshipf # if fuel tank, collect fuel
j mship3
mshipc: addi $s1, $s1, -512 # if collision on feet is detected, raise ship by 1 and resave to draw
bgt $t3, 5, mships # skip move up if on the feet
addi $sp, $sp, 4
li $a0, 1
j dsc # game-ending collision otherwise
mship3: addi $t0, $t0, 4
addi $t4, $t4, 4
addi $t3, $t3, 1
bne $t3,8, mship2
# 3. draw the ship in the new position
jal dship
beqz $t5, mship4
mship4: addi $sp, $sp, 4
lw $ra, -4($sp)
jr $ra
mshipf: addi $s6, $s6, 0x80 # collect fuel
ble $s6, 0xFF, mshipl
li $s6, 0xFF # cap fuel
mshipl: addi $t0, $s0, 13964 # fuel location in l1
beq $s4, 0, mshipf0 # level 0 fuel pos
addi $t0, $s0, 23072
beq $s4, 1, mshipf0 # level 1 fuel pos
addi $t0, $s0, 2300
beq $s4, 2, mshipf0 # level 2 fuel pos
mshipf0:li $t3, 0 # counter
li $t4, 0x0
mshipf1:sw $t4, 0($t0)
sw $t4, 4($t0)
sw $t4, 8($t0)
sw $t4, 12($t0)
addi $t3, $t3, 1
addi $t0, $t0, 512
bne $t3, 5, mshipf1
jal ubar
j mships
dbgd: # Debug print an int
li $v0, 1
syscall
la $a0, newline
li $v0, 4
syscall
jr $ra
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