154 lines
5.2 KiB
GDScript3
154 lines
5.2 KiB
GDScript3
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extends Node
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# _process(delta) is called by this class
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# player input is handled here
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# unit declares its intention in process_unit()
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# stage environment interacts with the unit in interact()
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# unit executes its resulting state in react()
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# stage environment interacts with the unit once more in interact_post()
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class_name GameScene
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export var tile_set_name: String
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const Constants = preload("res://Scripts/Constants.gd")
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const Unit = preload("res://Scripts/Unit.gd")
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const UNIT_DIRECTORY = {
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Constants.UnitType.NPC: preload("res://Units/NPC.tscn"),
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}
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# positions to unit string
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export var spawning : Dictionary
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var spawning_map = {} # keeps track of what's alive
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var paused : bool = false
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var units = []
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var player : Player
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var player_cam : Camera2D
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# [pressed?, just pressed?, just released?]
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var input_table = {
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Constants.PlayerInput.UP: [false, false, false],
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Constants.PlayerInput.DOWN: [false, false, false],
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Constants.PlayerInput.LEFT: [false, false, false],
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Constants.PlayerInput.RIGHT: [false, false, false],
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Constants.PlayerInput.GBA_A: [false, false, false],
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Constants.PlayerInput.GBA_B: [false, false, false],
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Constants.PlayerInput.GBA_SELECT: [false, false, false],
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}
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const I_T_PRESSED : int = 0
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const I_T_JUST_PRESSED : int = 1
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const I_T_JUST_RELEASED : int = 2
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var stage_env
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var time_elapsed : float = 0
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var rng = RandomNumberGenerator.new()
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# Called when the node enters the scene tree for the first time.
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func _ready():
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units.append(get_node("Player"))
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player = units[0]
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player.init_unit_w_scene(self)
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player_cam = player.get_node("Camera2D")
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player_cam.make_current()
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stage_env = load("res://Scripts/StageEnvironment.gd").new(self)
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player.get_node("Camera2D").make_current()
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for spawning_key in spawning:
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spawning_map[spawning_key] = null
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# Called every frame. 'delta' is the elapsed time since the previous frame.
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func _process(delta):
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# visual effects
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if (player.facing == Constants.Direction.RIGHT):
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player_cam.offset_h = 1
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else:
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player_cam.offset_h = -1
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read_paused()
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if not paused:
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# game logic
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process_spawning()
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for unit in units:
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unit.reset_actions()
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unit.handle_input(delta)
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unit.process_unit(delta, time_elapsed)
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stage_env.interact(unit, delta)
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unit.react(delta)
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time_elapsed += delta
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func read_paused():
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if Input.is_action_just_pressed(Constants.INPUT_MAP[Constants.PlayerInput.GBA_START]):
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paused = !paused
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func process_spawning():
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for one_spawn in spawning.keys():
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if spawning_map[one_spawn] != null:
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continue
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if abs(one_spawn[0] - player.pos.x) >= Constants.SPAWN_DISTANCE + 1 or abs(one_spawn[1] - player.pos.y) >= Constants.SPAWN_DISTANCE + 1:
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continue
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if abs(one_spawn[0] - player.pos.x) <= Constants.SPAWN_DISTANCE:
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continue
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# NPCUnit
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var npc_scene = UNIT_DIRECTORY[Constants.UnitType.get(spawning[one_spawn])]
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var npc_instance = npc_scene.instance()
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add_child(npc_instance)
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units.append(npc_instance)
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npc_instance.spawn_point = one_spawn
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spawning_map[one_spawn] = npc_instance
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npc_instance.pos.x = one_spawn[0]
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npc_instance.pos.y = one_spawn[1]
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npc_instance.position.x = npc_instance.pos.x * Constants.GRID_SIZE
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npc_instance.position.y = -1 * npc_instance.pos.y * Constants.GRID_SIZE
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npc_instance.init_unit_w_scene(self)
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func handle_player_input():
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# early exit
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if player.get_current_action() == Constants.UnitCurrentAction.RECOILING:
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player.set_action(Constants.ActionType.RECOIL)
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return
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for input_num in input_table.keys():
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if Input.is_action_pressed(Constants.INPUT_MAP[input_num]):
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input_table[input_num][I_T_PRESSED] = true
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input_table[input_num][I_T_JUST_RELEASED] = false
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if Input.is_action_just_pressed(Constants.INPUT_MAP[input_num]):
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input_table[input_num][I_T_JUST_PRESSED] = true
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else:
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input_table[input_num][I_T_JUST_PRESSED] = false
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else:
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input_table[input_num][I_T_PRESSED] = false
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input_table[input_num][I_T_JUST_PRESSED] = false
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if Input.is_action_just_released(Constants.INPUT_MAP[input_num]):
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input_table[input_num][I_T_JUST_RELEASED] = true
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else:
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input_table[input_num][I_T_JUST_RELEASED] = false
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# process input_table
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if input_table[Constants.PlayerInput.LEFT][I_T_PRESSED] or input_table[Constants.PlayerInput.RIGHT][I_T_PRESSED]:
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if input_table[Constants.PlayerInput.LEFT][I_T_PRESSED] and input_table[Constants.PlayerInput.RIGHT][I_T_PRESSED]:
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input_table[Constants.PlayerInput.LEFT][I_T_PRESSED] = false
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input_table[Constants.PlayerInput.LEFT][I_T_JUST_PRESSED] = false
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var input_dir
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if input_table[Constants.PlayerInput.LEFT][I_T_PRESSED]:
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input_dir = Constants.Direction.LEFT
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else:
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input_dir = Constants.Direction.RIGHT
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# if action-idle or action-jumping
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if (player.get_current_action() == Constants.UnitCurrentAction.IDLE
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or player.get_current_action() == Constants.UnitCurrentAction.JUMPING):
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# set move
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player.set_action(Constants.ActionType.MOVE)
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# set facing
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player.facing = input_dir
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if input_table[Constants.PlayerInput.GBA_A][I_T_PRESSED]:
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if (player.get_current_action() == Constants.UnitCurrentAction.JUMPING
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or (player.get_current_action() == Constants.UnitCurrentAction.IDLE
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and player.unit_conditions[Constants.UnitCondition.IS_ON_GROUND]
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and input_table[Constants.PlayerInput.GBA_A][I_T_JUST_PRESSED])):
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player.set_action(Constants.ActionType.JUMP)
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