Starter pack - Fishing World - Devlog #1

[Matt F.]

Setting up the land​

After posting the first devlog I quickly ran to set up some things.

Firstly I made a new Trello board to keep track of the development of the game.


After that I went to my code editor to start the basic skeleton of the game. I set up a main file to run the game and started working on a tile map system.

Tile map rendering​

I've already made some tile map rendering systems for some of my other games (for as long as they survived). To be honest, most of them were not the most efficient. I actually never managed to find a good way to render tile maps with pygame, but I'll try better for this one project.

For now, I've created a very inefficient function to render layers (basically 2 dimensional lists)

import pygame as pg
import settings as stgs

def render(layer, center):
    gw, gh = stgs.grid_w, stgs.grid_h
    x, y = center

    left, right = x - gw, x + gw
    top, bottom = y - gh, y + gh

    if left < 0: left = 0
    if right > (l := len(layer[0])): right = l
    if top < 0: top = 0
    if bottom > (l := len(layer)): bottom = l

    chunck = layer[top:bottom]

    ts = stgs.tile_size

    for y, row in enumerate(chunck):
        for x, tile in enumerate(row):
            stgs.screen.blit(
                tile.image, (
                    x*ts+stgs.margin_w,
                    y*ts+stgs.margin_h
                )
            )

center will be the player coordinate position within the grid.

The grid_w is the amount of tiles that fit the width of the screen. I calculate that in the settings file (maybe not the best place) just by dividing the width of the screen by the size of each tile. Same works for the grid_h but for the height.

Just so I don't have to explain everything one by one, here's the settings file for now:

import pygame as pg

pg.init()

# SETUP

screen = pg.display.set_mode()
clock = pg.time.Clock()
running = True

# SCREEN

W, H = screen.get_size()

# TILES

tile_pixels = 16
tile_size = 64

# GRID

grid_w = W // tile_size
grid_w -= 0 if grid_w % 2 else 1

grid_h = H // tile_size
grid_h -= 0 if grid_h % 2 else 1

margin_w = W/2 - grid_w * tile_size / 2
margin_h = H/2 - grid_h * tile_size / 2

(The reason I'm modifying grid_w and grid_h if their value is even is to have a central tile to render the player right in the middle of the screen.)

Finally, I created a tile class for testing:

class Tile:
    def __init__(self):
        size = stgs.tile_size
        self.image = pg.Surface((size, size))
        self.image.fill(
            choice(['green', 'blue'])
        )

Putting all of it together and setting a test layer full of these tiles, I've got something like this:

I need sleep​

Honestly, I didn't really "run" to do these things as I said in the beginning of this post. After the first post I just laid on my bed and fought against my brain for a good amount of hours. It's past 1am now and I've only got what I showed. I know this is not a place to rant but I think it'll be fun reading this in the future and probably finding out I didn't change much

Final words​

For now that's it. The plan for tomorrow is sketching some basic art for the game and implementing the player movement.

Thanks for reading!

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