Implement Game logic
TODO: Game UI with settings and start button, Gamepad input, visuals
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6 changed files with 181 additions and 60 deletions
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@ -1,15 +1,24 @@
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[gd_scene load_steps=3 format=3 uid="uid://clirt527jo4x2"]
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[gd_scene load_steps=5 format=3 uid="uid://drs4bhpd3vrh2"]
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[ext_resource type="Script" path="res://Scripts/MapGenerator.gd" id="1_dyj4p"]
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[ext_resource type="Script" path="res://Scripts/GameManager.gd" id="1_lps27"]
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[ext_resource type="Texture2D" uid="uid://vv33w22kwgpc" path="res://Assets/tile.png" id="2_wiemx"]
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[ext_resource type="Script" path="res://Scripts/TileColors.gd" id="3_gnesl"]
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[sub_resource type="Resource" id="Resource_22g0s"]
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script = ExtResource("3_gnesl")
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empty = Color(1, 1, 1, 1)
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snake_head = Color(0, 1, 0, 1)
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snake_body = Color(0.133333, 0.545098, 0.133333, 1)
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apple = Color(1, 0, 0, 1)
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[node name="Node2D" type="Node2D"]
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[node name="GameManager" type="Node" parent="."]
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[node name="Map" type="Node2D" parent="."]
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script = ExtResource("1_dyj4p")
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script = ExtResource("1_lps27")
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texture = ExtResource("2_wiemx")
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tile_color = SubResource("Resource_22g0s")
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[node name="Camera2D" type="Camera2D" parent="."]
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118
Scripts/GameManager.gd
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118
Scripts/GameManager.gd
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@ -0,0 +1,118 @@
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extends Node
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@export var map_size := 15
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@export var texture : Texture2D
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@export var scale := 32.0
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@export var gaps := 4
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@export var speed := 0.25
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@export var tile_color := TileColors.new()
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var tiles = []
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var snake_move_vector : Vector2
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var last_snake_move_vector : Vector2
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var snake_length : int
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var rng = RandomNumberGenerator.new()
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var timer := 0.0
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func generate_tiles():
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for x in range(map_size):
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tiles.append([])
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tiles[x] = []
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for y in range(map_size):
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var tile = Tile.new()
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tile.texture = texture
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tile.tile_color = tile_color
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tile.scale = Vector2(scale, scale)
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tile.position = Vector2(x * ( scale + gaps ) - map_size / 2 * (scale + gaps), y * (scale + gaps) - map_size / 2 * (scale + gaps))
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self.add_child(tile)
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tiles[x].append([])
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tiles[x][y] = tile
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pass
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func generate_apple():
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var foundViablePosition := false
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var tile : Tile
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while !foundViablePosition:
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tile = tiles[rng.randi_range(0, map_size -1)][rng.randi_range(0, map_size -1)] as Tile
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if(tile.state == Tile.States.EMPTY):
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foundViablePosition = true
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tile.state = Tile.States.APPLE
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pass
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func set_snake_to_start_position():
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#No need for float protection, godot automaticly converts floats to ints in this case
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var tile = (tiles[map_size / 2][map_size / 2] as Tile)
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tile.state = Tile.States.SNAKE
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tile.snake_pos = 1
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pass
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func read_input() -> Vector2:#
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# cant use Input.get_vector because it normalizes the vector
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return Vector2(Input.get_axis("left", "right"), Input.get_axis("up", "down"))
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func process_tiles():
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var new_snake_head : Tile
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for x in range(map_size):
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for y in range(map_size):
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var tile = tiles[x][y] as Tile
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if tile.state == Tile.States.SNAKE:
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if tile.snake_pos == 1:
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if x + snake_move_vector.x >= map_size || x + snake_move_vector.x < 0 || y + snake_move_vector.y >= map_size || y + snake_move_vector.y < 0:
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game_stop()
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return
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new_snake_head = tiles[x + snake_move_vector.x][y + snake_move_vector.y] as Tile
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tile.snake_pos += 1
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if(tile.snake_pos > snake_length):
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tile.snake_pos = 0
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tile.state = Tile.States.EMPTY
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var was_apple = new_snake_head.state == Tile.States.APPLE
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new_snake_head.snake_pos = 1
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new_snake_head.state = Tile.States.SNAKE
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last_snake_move_vector = snake_move_vector
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if was_apple:
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snake_length += 1
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generate_apple()
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pass
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func process_snake_rotation():
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var input = read_input()
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print(input)
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# Return if no Input or Input into multiple directions
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if input.length() == 0 || input.length() > 1:
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return
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#return if input is the inverse of the moving direction
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if input * -1 == last_snake_move_vector:
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return
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# set move direction into inpu direction
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snake_move_vector = input.normalized()
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func _ready():
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game_start()
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pass
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func game_start():
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snake_move_vector = Vector2.RIGHT
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last_snake_move_vector = snake_move_vector
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snake_length = 3
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tiles.clear()
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generate_tiles()
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set_snake_to_start_position()
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generate_apple()
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pass
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func game_stop():
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print("dead")
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pass
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func _process(delta):
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process_snake_rotation()
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if(timer >= speed):
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timer = 0
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process_tiles()
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timer += delta
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pass
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@ -1,52 +0,0 @@
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extends Node
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@export var map_size := 15
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@export var texture : Texture2D
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@export var scale := 32.0
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@export var gaps := 4
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@export_category("Colors")
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@export var tile_color := Color.WHITE
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@export var snake_color := Color.GREEN
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@export var apple_color := Color.RED
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# Array of all Tiles of the Map
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var tiles = []
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func generate_tiles():
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for x in range(map_size):
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tiles.append([])
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tiles[x] = []
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for y in range(map_size):
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var tile = Tile.new()
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tile.texture = texture
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tile.scale = Vector2(scale, scale)
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tile.position = Vector2(x * ( scale + gaps ) - map_size / 2 * (scale + gaps), y * (scale + gaps) - map_size / 2 * (scale + gaps))
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self.add_child(tile)
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tiles[x].append([])
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tiles[x][y] = tile
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pass
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func _ready():
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generate_tiles()
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pass
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func update_tile_colors():
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for x in range(map_size):
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for y in range(map_size):
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match tiles[x][y].get_state():
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Tile.States.EMPTY:
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tiles[x][y].modulate = tile_color
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Tile.States.SNAKE:
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tiles[x][y].modulate = snake_color
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Tile.States.APPLE:
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tiles[x][y].modulate = apple_color
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pass
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func _process(delta):
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update_tile_colors()
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pass
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@ -9,12 +9,23 @@ enum States {
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}
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@export var state : States
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# 0 means no snake at all, 1 means head and the biger, the further it is from the head
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@export var snake_pos := 0
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@export var tile_color : TileColors
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func _init():
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state = States.EMPTY
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func get_state() -> States:
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return state
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func set_state(_state : States):
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state = _state
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func update_color():
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match state:
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States.EMPTY:
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self.modulate = tile_color.empty
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States.SNAKE:
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self.modulate = tile_color.snake_body if snake_pos > 1 else tile_color.snake_head
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States.APPLE:
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self.modulate = tile_color.apple
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pass
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func _process(delta):
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update_color()
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pass
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8
Scripts/TileColors.gd
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8
Scripts/TileColors.gd
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@ -0,0 +1,8 @@
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extends Resource
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class_name TileColors
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@export var empty := Color.WHITE
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@export var snake_head := Color.GREEN
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@export var snake_body := Color.FOREST_GREEN
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@export var apple := Color.RED
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@ -15,6 +15,33 @@ run/main_scene="res://Scene/Game.tscn"
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config/features=PackedStringArray("4.0", "GL Compatibility")
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config/icon="res://icon.svg"
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[input]
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left={
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"deadzone": 0.5,
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"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":65,"key_label":0,"unicode":97,"echo":false,"script":null)
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, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194319,"key_label":0,"unicode":0,"echo":false,"script":null)
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]
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}
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right={
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"deadzone": 0.5,
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"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":68,"key_label":0,"unicode":100,"echo":false,"script":null)
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, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194321,"key_label":0,"unicode":0,"echo":false,"script":null)
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]
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}
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up={
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"deadzone": 0.5,
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"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":87,"key_label":0,"unicode":119,"echo":false,"script":null)
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, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194320,"key_label":0,"unicode":0,"echo":false,"script":null)
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]
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}
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down={
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"deadzone": 0.5,
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"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":83,"key_label":0,"unicode":115,"echo":false,"script":null)
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, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194322,"key_label":0,"unicode":0,"echo":false,"script":null)
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]
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}
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[rendering]
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renderer/rendering_method="gl_compatibility"
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