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Diffstat (limited to 'blog/dst/g/gogodot_jam3_devlog_1.html')
| -rw-r--r-- | blog/dst/g/gogodot_jam3_devlog_1.html | 62 |
1 files changed, 59 insertions, 3 deletions
diff --git a/blog/dst/g/gogodot_jam3_devlog_1.html b/blog/dst/g/gogodot_jam3_devlog_1.html index 9d6e945..92480c4 100644 --- a/blog/dst/g/gogodot_jam3_devlog_1.html +++ b/blog/dst/g/gogodot_jam3_devlog_1.html @@ -216,7 +216,7 @@ func _on_Head_snake_path_new_point(coordinates: Vector2) -> void: <img alt="Snake - Basic movement with all body parts" src="images/g/gogodot_jam3/snake_basic_movement_added_body_parts.gif" title="Snake - Basic movement with all body parts"> <figcaption>Snake - Basic movement with all body parts</figcaption> </figure> -<p>Now, we need to handle adding body parts after the snake is complete and already moved for a bit, this will require a queue so we can add part by part in the case that we eat multiple pieces of food in a short period of time. For this we need to add some signals: <code>snake_add_new_segment(type)</code>, <code>snake_added_new_segment(type)</code>, <code>snake_added_initial_segments</code> and use them when makes sense. Now we need to add the following:</p> +<p>Now, we need to handle adding body parts after the snake is complete and already moved for a bit, this will require a queue so we can add part by part in the case that we eat multiple pieces of food in a short period of time. For this we need to add some signals: <code>snake_adding_new_segment(type)</code>, <code>snake_added_new_segment(type)</code>, <code>snake_added_initial_segments</code> and use them when makes sense. Now we need to add the following:</p> <pre><code class="language-gdscript">var body_segment_stack: Array var tail_segment: PathFollow2D # didn't konw how to name this, basically holds the current path lenght @@ -259,7 +259,63 @@ func _add_segment_to_queue() -> void: <img alt="Snake - Basic movement with dynamic addition of new segments" src="images/g/gogodot_jam3/snake_basic_movement_with_dynamic_segments.gif" title="Snake - Basic movement with dynamic addition of new segments"> <figcaption>Snake - Basic movement with dynamic addition of new segments</figcaption> </figure> -<p>For now, this should be enough, I’ll add more stuff as needed as I go.</p> +<p>For now, this should be enough, I’ll add more stuff as needed as I go. Last thing is that after finished testing that the movement felt ok, I just added a way to stop the snake whenever it collides with itself by using the following code (and the signal <code>snake_segment_body_entered(body)</code>) in a <code>main.gd</code> script that is the entry point for the game:</p> +<pre><code class="language-gdscript">func _snake_disabled(on_off: bool) -> void: + _snake.propagate_call("set_process", [on_off]) + _snake.propagate_call("set_process_internal", [on_off]) + _snake.propagate_call("set_physics_process", [on_off]) + _snake.propagate_call("set_physics_process_internal", [on_off]) + _snake.propagate_call("set_process_input", [on_off]) +</code></pre> +<p>Which will stop the snake node and all children.</p> +<h2 id="the-food">The food</h2> +<p>For now I just decided to setup a simple system to see everything works fine. The idea is to make some kind of generic food node/scene and a “food manager” to spawn them, for now in totally random locations. For this I added the following signals: <code>food_placing_new_food(type)</code>, <code>food_placed_new_food(type)</code> and <code>food_eaten(type)</code>.</p> +<p>First thing is creating the <code>Food.tscn</code> which is just an <em>Area2D</em> with its necessary children with an attached script called <code>food.gd</code>. The script is really simple:</p> +<pre><code class="language-gdscript">class_name Food # needed to access Type enum outside of the script, this registers this script as a node +extends Area2D + +enum Type { + APPLE +} + +var _type_texture: Dictionary = { + Type.APPLE: preload("res://entities/food/sprites/apple.png") +} + +export(Type) var TYPE +onready var _sprite: Sprite = $Sprite + + +func _ready(): + connect("body_entered", self, "_on_body_entered") + _sprite.texture = _type_texture[TYPE] + + +func _on_body_entered(body: Node) -> void: + Event.emit_signal("food_eaten", TYPE) + queue_free() +</code></pre> +<p>Then this <code>food_eaten</code> signal is received in <code>snake.gd</code> to add a new segment to the queue.</p> +<p>Finally, for the food manager I just created a <code>FoodManager.tscn</code> with a <em>Node2D</em> with an attached script called <code>food_manager.gd</code>. To get a random position:</p> +<pre><code class="language-gdscript">func _get_random_pos() -> Vector2: + var screen_size: Vector2 = get_viewport().get_visible_rect().size + var temp_x: float = randf() * screen_size.x - screen_size.x / 2.0 + var temp_y: float = randf() * screen_size.y - screen_size.y / 2.0 + + return Vector2(temp_x, temp_y) +</code></pre> +<p>Which gets the job done, but later I’ll have to add a way to check that the position is valid. And to actually place the food:</p> +<pre><code class="language-gdscript">func _place_new_food() -> void: + var food: Area2D = FOOD.instance() + var position: Vector2 = _get_random_pos() + food.global_position = position + add_child(food) +</code></pre> +<p>And this is used in <code>_process</code> to place new food whenever needed. For now I added a condition to add food until 10 pieces are in place, and keep adding whenever the food is is lower than 10. After setting everything up, this is the result:</p> +<figure id="__yafg-figure-9"> +<img alt="Snake - Food basic interaction" src="images/g/gogodot_jam3/snake_food_basic_interaction.gif" title="Snake - Food basic interaction"> +<figcaption>Snake - Food basic interaction</figcaption> +</figure> <h2 id="brainstormto-do">Brainstorm/To-do</h2> <ul> <li> @@ -325,7 +381,7 @@ func _add_segment_to_queue() -> void: <hr> <div class="article-info"> <p>By David LuĂ©vano</p> - <p>Created: Wed, Jun 01, 2022 @ 09:21 UTC</p> + <p>Created: Thu, Jun 02, 2022 @ 08:34 UTC</p> <div class="article-tags"> <p>Tags: <a href="https://blog.luevano.xyz/tag/@english.html">english</a>, <a href="https://blog.luevano.xyz/tag/@gamedev.html">gamedev</a>, <a href="https://blog.luevano.xyz/tag/@gamejam.html">gamejam</a>, <a href="https://blog.luevano.xyz/tag/@godot.html">godot</a> </p> |