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def tick args
#tick_instructions args, "Use LEFT and RIGHT arrow keys to move and SPACE to jump."
defaults args
render args
input args
calc args
end
# sets default values and creates empty collections
# initialization only happens in the first frame
def defaults args
fiddle args
args.state.tick_count = args.state.tick_count
args.state.bridge_top = 128
args.state.player.x ||= 0 # initializes player's properties
args.state.player.y ||= args.state.bridge_top
args.state.player.w ||= 64
args.state.player.h ||= 64
args.state.player.dy ||= 0
args.state.player.dx ||= 0
args.state.player.r ||= 0
args.state.game_over_at ||= 0
args.state.animation_time ||=0
args.state.timeleft ||=0
args.state.timeright ||=0
args.state.lastpush ||=0
args.state.inputlist ||= ["j","k","l"]
end
# sets enemy, player, hammer values
def fiddle args
args.state.gravity = -0.5
args.state.player_jump_power = 10 # sets player values
args.state.player_jump_power_duration = 5
args.state.player_max_run_speed = 20
args.state.player_speed_slowdown_rate = 0.9
args.state.player_acceleration = 0.9
end
# outputs objects onto the screen
def render args
if (args.state.player.dx < 0.01) && (args.state.player.dx > -0.01)
args.state.player.dx = 0
end
#move list
(args.layout.rect_group row: 0, col_from_right: 8, drow: 0.3,
merge: { vertical_alignment_enum: 0, size_enum: -2 },
group: [
{ text: "move: WASD" },
{ text: "jump: Space" },
{ text: "attack forwards: J (while on ground" },
{ text: "attack upwards: K (while on groud)" },
{ text: "attack backwards: J (while on ground and holding A)" },
{ text: "attack downwards: K (while in air)" },
{ text: "dash attack: J, K in quick succession." },
{ text: "shield: hold J, K at the same time." },
{ text: "dash backwards: A, A in quick succession." },
]).into args.outputs.labels
# registered moves
args.outputs.labels << { x: 0.to_layout_col,
y: 0.to_layout_row,
text: "input history",
size_enum: -2,
vertical_alignment_enum: 0 }
(args.state.inputlist.take(5)).map do |s|
{ text: s, size_enum: -2, vertical_alignment_enum: 0 }
end.yield_self do |group|
(args.layout.rect_group row: 0.3, col: 0, drow: 0.3, group: group).into args.outputs.labels
end
#sprites
player = [args.state.player.x, args.state.player.y,
args.state.player.w, args.state.player.h,
"sprites/square/white.png",
args.state.player.r]
playershield = [args.state.player.x - 20, args.state.player.y - 10,
args.state.player.w + 20, args.state.player.h + 20,
"sprites/square/blue.png",
args.state.player.r,
0]
playerjab = [args.state.player.x + 32, args.state.player.y,
args.state.player.w, args.state.player.h,
"sprites/isometric/indigo.png",
args.state.player.r,
0]
playerupper = [args.state.player.x, args.state.player.y + 32,
args.state.player.w, args.state.player.h,
"sprites/isometric/indigo.png",
args.state.player.r+90,
0]
if ((args.state.tick_count - args.state.lastpush) <= 15)
if (args.state.inputlist[0] == "<<")
player = [args.state.player.x, args.state.player.y,
args.state.player.w, args.state.player.h,
"sprites/square/yellow.png", args.state.player.r]
end
if (args.state.inputlist[0] == "shield")
player = [args.state.player.x, args.state.player.y,
args.state.player.w, args.state.player.h,
"sprites/square/indigo.png", args.state.player.r]
playershield = [args.state.player.x - 10, args.state.player.y - 10,
args.state.player.w + 20, args.state.player.h + 20,
"sprites/square/blue.png", args.state.player.r, 50]
end
if (args.state.inputlist[0] == "back-attack")
playerjab = [args.state.player.x - 20, args.state.player.y,
args.state.player.w - 10, args.state.player.h,
"sprites/isometric/indigo.png", args.state.player.r, 255]
end
if (args.state.inputlist[0] == "forward-attack")
playerjab = [args.state.player.x + 32, args.state.player.y,
args.state.player.w, args.state.player.h,
"sprites/isometric/indigo.png", args.state.player.r, 255]
end
if (args.state.inputlist[0] == "up-attack")
playerupper = [args.state.player.x, args.state.player.y + 32,
args.state.player.w, args.state.player.h,
"sprites/isometric/indigo.png", args.state.player.r + 90, 255]
end
if (args.state.inputlist[0] == "dair")
playerupper = [args.state.player.x, args.state.player.y - 32,
args.state.player.w, args.state.player.h,
"sprites/isometric/indigo.png", args.state.player.r + 90, 255]
end
if (args.state.inputlist[0] == "dash-attack")
playerupper = [args.state.player.x, args.state.player.y + 32,
args.state.player.w, args.state.player.h,
"sprites/isometric/violet.png", args.state.player.r + 90, 255]
playerjab = [args.state.player.x + 32, args.state.player.y,
args.state.player.w, args.state.player.h,
"sprites/isometric/violet.png", args.state.player.r, 255]
end
end
args.outputs.sprites << playerjab
args.outputs.sprites << playerupper
args.outputs.sprites << player
args.outputs.sprites << playershield
args.outputs.solids << 20.map_with_index do |i| # uses 20 squares to form bridge
[i * 64, args.state.bridge_top - 64, 64, 64]
end
end
# Performs calculations to move objects on the screen
def calc args
# Since velocity is the change in position, the change in x increases by dx. Same with y and dy.
args.state.player.x += args.state.player.dx
args.state.player.y += args.state.player.dy
# Since acceleration is the change in velocity, the change in y (dy) increases every frame
args.state.player.dy += args.state.gravity
# player's y position is either current y position or y position of top of
# bridge, whichever has a greater value
# ensures that the player never goes below the bridge
args.state.player.y = args.state.player.y.greater(args.state.bridge_top)
# player's x position is either the current x position or 0, whichever has a greater value
# ensures that the player doesn't go too far left (out of the screen's scope)
args.state.player.x = args.state.player.x.greater(0)
# player is not falling if it is located on the top of the bridge
args.state.player.falling = false if args.state.player.y == args.state.bridge_top
#args.state.player.rect = [args.state.player.x, args.state.player.y, args.state.player.h, args.state.player.w] # sets definition for player
end
# Resets the player by changing its properties back to the values they had at initialization
def reset_player args
args.state.player.x = 0
args.state.player.y = args.state.bridge_top
args.state.player.dy = 0
args.state.player.dx = 0
args.state.enemy.hammers.clear # empties hammer collection
args.state.enemy.hammer_queue.clear # empties hammer_queue
args.state.game_over_at = args.state.tick_count # game_over_at set to current frame (or passage of time)
end
# Processes input from the user to move the player
def input args
if args.state.inputlist.length > 5
args.state.inputlist.pop
end
should_process_special_move = (args.inputs.keyboard.key_down.j) ||
(args.inputs.keyboard.key_down.k) ||
(args.inputs.keyboard.key_down.a) ||
(args.inputs.keyboard.key_down.d) ||
(args.inputs.controller_one.key_down.y) ||
(args.inputs.controller_one.key_down.x) ||
(args.inputs.controller_one.key_down.left) ||
(args.inputs.controller_one.key_down.right)
if (should_process_special_move)
if (args.inputs.keyboard.key_down.j && args.inputs.keyboard.key_down.k) ||
(args.inputs.controller_one.key_down.x && args.inputs.controller_one.key_down.y)
args.state.inputlist.unshift("shield")
elsif (args.inputs.keyboard.key_down.k || args.inputs.controller_one.key_down.y) &&
(args.state.inputlist[0] == "forward-attack") && ((args.state.tick_count - args.state.lastpush) <= 15)
args.state.inputlist.unshift("dash-attack")
args.state.player.dx = 20
elsif (args.inputs.keyboard.key_down.j && args.inputs.keyboard.a) ||
(args.inputs.controller_one.key_down.x && args.inputs.controller_one.key_down.left)
args.state.inputlist.unshift("back-attack")
elsif ( args.inputs.controller_one.key_down.x || args.inputs.keyboard.key_down.j)
args.state.inputlist.unshift("forward-attack")
elsif (args.inputs.keyboard.key_down.k || args.inputs.controller_one.key_down.y) &&
(args.state.player.y > 128)
args.state.inputlist.unshift("dair")
elsif (args.inputs.keyboard.key_down.k || args.inputs.controller_one.key_down.y)
args.state.inputlist.unshift("up-attack")
elsif (args.inputs.controller_one.key_down.left || args.inputs.keyboard.key_down.a) &&
(args.state.inputlist[0] == "<") &&
((args.state.tick_count - args.state.lastpush) <= 10)
args.state.inputlist.unshift("<<")
args.state.player.dx = -15
elsif (args.inputs.controller_one.key_down.left || args.inputs.keyboard.key_down.a)
args.state.inputlist.unshift("<")
args.state.timeleft = args.state.tick_count
elsif (args.inputs.controller_one.key_down.right || args.inputs.keyboard.key_down.d)
args.state.inputlist.unshift(">")
end
args.state.lastpush = args.state.tick_count
end
if args.inputs.keyboard.space || args.inputs.controller_one.r2 # if the user presses the space bar
args.state.player.jumped_at ||= args.state.tick_count # jumped_at is set to current frame
# if the time that has passed since the jump is less than the player's jump duration and
# the player is not falling
if args.state.player.jumped_at.elapsed_time < args.state.player_jump_power_duration && !args.state.player.falling
args.state.player.dy = args.state.player_jump_power # change in y is set to power of player's jump
end
end
# if the space bar is in the "up" state (or not being pressed down)
if args.inputs.keyboard.key_up.space || args.inputs.controller_one.key_up.r2
args.state.player.jumped_at = nil # jumped_at is empty
args.state.player.falling = true # the player is falling
end
if args.inputs.left # if left key is pressed
if args.state.player.dx < -5
args.state.player.dx = args.state.player.dx
else
args.state.player.dx = -5
end
elsif args.inputs.right # if right key is pressed
if args.state.player.dx > 5
args.state.player.dx = args.state.player.dx
else
args.state.player.dx = 5
end
else
args.state.player.dx *= args.state.player_speed_slowdown_rate # dx is scaled down
end
if ((args.state.player.dx).abs > 5) #&& ((args.state.tick_count - args.state.lastpush) <= 10)
args.state.player.dx *= 0.95
end
end
def tick_instructions args, text, y = 715
return if args.state.key_event_occurred
if args.inputs.mouse.click ||
args.inputs.keyboard.directional_vector ||
args.inputs.keyboard.key_down.enter ||
args.inputs.keyboard.key_down.space ||
args.inputs.keyboard.key_down.escape
args.state.key_event_occurred = true
end
args.outputs.debug << [0, y - 50, 1280, 60].solid
args.outputs.debug << [640, y, text, 1, 1, 255, 255, 255].label
args.outputs.debug << [640, y - 25, "(click to dismiss instructions)" , -2, 1, 255, 255, 255].label
end
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