Here's a proof-of-concept for a zoomable camera:

Features

• Multiple cameras
• Set target coordinates, drawn at the camera center
• Set zoom factor, for drawing scaled map and sprites

Functionality

• camera.get_center()
• camera.set_target(x, y)
• camera.get_target()
• camera.start_draw()
• camera.draw_map(tx, ty, tw, th, x, y)
• camera.draw_spr(s, x, y)
• camera.draw_sspr(sx, sy, sw, sh, x, y)
• camera.end_draw()

Relies on this smap function. Code is below or via GitHub.

zoomable_camera

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zoomable_camera

by rik-x

Cart #zoomable_camera-1 | 2024-04-09 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

8

cool, i have been looking for something like this for a whie. But i have a few questions.

• does it work with sprites
• does it work with the map
• the demo you showed if you
  zoon out too much the circle
  inverts and it starts getting
  bigger. could you fix it with
  radius=max(0,radius)

i like it :)

Hey, glad you like the code. In answer to your questions:

• It works with custom 'sprite' objects, which are just containers for the data needed to call 'sspr'. You could always add separate camera.draw_spr and camera.draw_sspr functions that use different data.
• Yes, it works with the map. You just need to edit the width and height of the map in the map function.
• You're right, I didn't add any error checking. Your suggested code is a great idea, thanks.

Thanks :)

@cheesemug i've updated the camera code to cope with drawing sprites using spr and sspr functionality (see list in my original post). I've also removed my own sprite object code, as I like the idea of the camera integrating with existing functions as much as possible.

Thanks!