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https://github.com/Dadido3/noita-mapcap.git
synced 2024-10-16 08:17:32 +00:00
Add virtual offset to coordinate transformation
- Add some general information on Noitas viewport transformation - Update viewport transformation tests
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@ -3,11 +3,24 @@
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-- This software is released under the MIT License.
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-- https://opensource.org/licenses/MIT
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-- Viewport coordinates transformation (world <-> window) for Noita.
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-- Pixel perfect viewport coordinates transformation (world <-> window) for Noita.
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-- For it to work, you have to:
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-- - Put Coords:ReadResolutions() inside of the OnMagicNumbersAndWorldSeedInitialized() hook.
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-- Some general information on how Noita does that stuff internally:
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-- - The base for all calculations is the window rectangle (window client area).
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-- - Inside the window there is the internal rectangle that is fit to be fully contained and centered inside the window.
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-- - Inside the internal rectangle there is the virtual rectangle that is aligned to the top, and scaled to fit horizontally.
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-- - Everything outside the internal rectangle is black.
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-- - Everything outside the virtual rectangle is not rendered correctly.
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-- - A positive virtual offset moves the rendered world to the top left.
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-- - The virtual offset needs to be [-2, 0] for the viewport center to be exactly centered, and chunks to align perfectly with the window.
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-- - GameGetCameraBounds returned coordinates are off by a few pixels, also it doesn't have sub pixel precision.
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-- - The mouse cursor coordinates in the dev build use the wrong rounding method (It rounds towards zero, instead of floor).
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-- - Integer world coordinates map exactly to pixel borders.
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-- - The default image ratios of the virtual and internal rectangles don't exactly match, which causes a really small black border.
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--------------------------
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-- Load library modules --
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--------------------------
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@ -21,14 +34,18 @@ local Vec2 = require("noita-api.vec2")
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-- Code --
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----------
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local virtualOffsetPixelPerfect = Vec2(-2, 0)
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---@class Coords
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---@field InternalResolution Vec2 -- Size of the internal rectangle in window pixels.
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---@field WindowResolution Vec2 -- Size of the window client area in window pixels.
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---@field VirtualResolution Vec2 -- Size of the virtual rectangle in world/virtual pixels.
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---@field VirtualOffset Vec2 -- Offset of the virtual rectangle in world/virtual pixels.
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local Coords = {
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InternalResolution = Vec2(0, 0),
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WindowResolution = Vec2(0, 0),
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VirtualResolution = Vec2(0, 0),
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VirtualOffset = Vec2(0, 0),
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}
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---Reads and updates the internal, window and virtual resolutions from Noita's config files and API.
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@ -44,6 +61,7 @@ function Coords:ReadResolutions()
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self.WindowResolution = Vec2(tonumber(xml.attr["window_w"]), tonumber(xml.attr["window_h"]))
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self.InternalResolution = Vec2(tonumber(xml.attr["internal_size_w"]), tonumber(xml.attr["internal_size_h"]))
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self.VirtualResolution = Vec2(tonumber(MagicNumbersGetValue("VIRTUAL_RESOLUTION_X")), tonumber(MagicNumbersGetValue("VIRTUAL_RESOLUTION_Y")))
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self.VirtualOffset = Vec2(tonumber(MagicNumbersGetValue("VIRTUAL_RESOLUTION_OFFSET_X")), tonumber(MagicNumbersGetValue("VIRTUAL_RESOLUTION_OFFSET_Y")))
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f:close()
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return nil
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@ -112,7 +130,7 @@ function Coords:ToWindow(world, viewportCenter)
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local internalTopLeft, internalBottomRight = self:InternalRect()
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local pixelScale = self:PixelScale()
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return internalTopLeft + (self.VirtualResolution / 2 + world - viewportCenter) * pixelScale
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return internalTopLeft + (self.VirtualResolution / 2 + world - viewportCenter - virtualOffsetPixelPerfect + self.VirtualOffset) * pixelScale
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end
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---Converts the given window coordinates into world/virtual coordinates.
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@ -125,7 +143,7 @@ function Coords:ToWorld(window, viewportCenter)
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local internalTopLeft, internalBottomRight = self:InternalRect()
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local pixelScale = self:PixelScale()
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return viewportCenter - self.VirtualResolution / 2 + (window - internalTopLeft) / pixelScale
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return viewportCenter - self.VirtualResolution / 2 + (window - internalTopLeft) / pixelScale + virtualOffsetPixelPerfect - self.VirtualOffset
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end
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-------------
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@ -141,38 +159,38 @@ end
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---
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--- Magic numbers (`.\mods\noita-mapcap\files\magic_numbers.xml`):
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--- - `VIRTUAL_RESOLUTION_X`, `VIRTUAL_RESOLUTION_X`: The resolution of the rendered world.
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--- - `VIRTUAL_RESOLUTION_OFFSET_X`, `VIRTUAL_RESOLUTION_OFFSET_Y`: Offset of the world/virtual coordinate system, has to be set to `-2, 0` to map pixel exact to the screen.
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--- - `VIRTUAL_RESOLUTION_OFFSET_X`, `VIRTUAL_RESOLUTION_OFFSET_Y`: Offset of the world/virtual coordinate system, has to be set to `-2, 0` to map pixel perfect to the screen.
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---
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--- Table contents:
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---
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--- - `InternalRes`, `WindowRes`, `VirtualRes` -- are the settings from the above mentioned config files.
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--- - `InternalRes`, `WindowRes`, `VirtualRes`, `VirtualOffset` -- are the settings from the above mentioned config files.
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--- - `WindowTopLeft` contains the resulting world coordinates of the window's top left pixel with GameSetCameraPos(0, 0).
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--- - `WindowCenter` contains the resulting world coordinates of the window's center pixel with GameSetCameraPos(0, 0).
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--- - `RenderedTopLeft`, `RenderedBottomRight` describe the rectangle in world coordinates that contains correctly rendered chunks. Everything outside this rectangle may either just be a blank background image or completely black.
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local testTable = {
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(1024, 1024), WindowTopLeft = Vec2(-512, -512), WindowCenter = Vec2(0, 0), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 512) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(512, 1024), WindowTopLeft = Vec2(-256, -512), WindowCenter = Vec2(0, -256), RenderedTopLeft = Vec2(-256, -512), RenderedBottomRight = Vec2(256, 0) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(1024, 512), WindowTopLeft = Vec2(-512, -256), WindowCenter = Vec2(0, 256), RenderedTopLeft = Vec2(-512, -256), RenderedBottomRight = Vec2(512, 256) },
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{ InternalRes = Vec2(512, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(1024, 1024), WindowTopLeft = Vec2(-1024, -512), WindowCenter = Vec2(0, 512), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 512) },
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{ InternalRes = Vec2(1024, 512), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(1024, 1024), WindowTopLeft = Vec2(-512, -768), WindowCenter = Vec2(0, -256), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 0) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 2048), VirtualRes = Vec2(1024, 1024), WindowTopLeft = Vec2(-512, -1024), WindowCenter = Vec2(0, 0), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 512) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(1024, 1024), WindowTopLeft = Vec2(-1024, -512), WindowCenter = Vec2(0, 0), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 512) },
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{ InternalRes = Vec2(1024, 512), WindowRes = Vec2(1024, 512), VirtualRes = Vec2(1024, 1024), WindowTopLeft = Vec2(-512, -512), WindowCenter = Vec2(0, -256), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 0) },
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{ InternalRes = Vec2(2048, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(1024, 1024), WindowTopLeft = Vec2(-512, -512), WindowCenter = Vec2(0, -256), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 0) },
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{ InternalRes = Vec2(2048, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(2048, 1024), WindowTopLeft = Vec2(-1024, -512), WindowCenter = Vec2(0, 0), RenderedTopLeft = Vec2(-1024, -512), RenderedBottomRight = Vec2(1024, 512) },
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{ InternalRes = Vec2(2048, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(512, 2048), WindowTopLeft = Vec2(-256, -1024), WindowCenter = Vec2(0, -896), RenderedTopLeft = Vec2(-256, -1024), RenderedBottomRight = Vec2(256, -768) },
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{ InternalRes = Vec2(2048, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(1024, 16), WindowTopLeft = Vec2(-512, -8), WindowCenter = Vec2(0, 248), RenderedTopLeft = Vec2(-512, -8), RenderedBottomRight = Vec2(512, 8) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(32, 16), WindowTopLeft = Vec2(-16, -8), WindowCenter = Vec2(0, 8), RenderedTopLeft = Vec2(-16, -8), RenderedBottomRight = Vec2(16, 8) },
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{ InternalRes = Vec2(1280, 720), WindowRes = Vec2(1920, 1080), VirtualRes = Vec2(427, 242), WindowTopLeft = Vec2(-213.5, -121), WindowCenter = Vec2(0, -0.90625), RenderedTopLeft = Vec2(-213.5, -121), RenderedBottomRight = Vec2(213.5, 119.1875) },
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{ InternalRes = Vec2(1280, 720), WindowRes = Vec2(1920, 1200), VirtualRes = Vec2(427, 242), WindowTopLeft = Vec2(-213.5, -134.34375), WindowCenter = Vec2(0, -0.90625), RenderedTopLeft = Vec2(-213.5, -121), RenderedBottomRight = Vec2(213.5, 119.1875) },
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{ InternalRes = Vec2(1280, 720), WindowRes = Vec2(2048, 1080), VirtualRes = Vec2(427, 242), WindowTopLeft = Vec2(-227.73333, -121), WindowCenter = Vec2(0, -0.90625), RenderedTopLeft = Vec2(-213.5, -121), RenderedBottomRight = Vec2(213.5, 119.1875) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(1024, 1024), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-512, -512), WindowCenter = Vec2(0, 0), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 512) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(512, 1024), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-256, -512), WindowCenter = Vec2(0, -256), RenderedTopLeft = Vec2(-256, -512), RenderedBottomRight = Vec2(256, 0) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(1024, 512), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-512, -256), WindowCenter = Vec2(0, 256), RenderedTopLeft = Vec2(-512, -256), RenderedBottomRight = Vec2(512, 256) },
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{ InternalRes = Vec2(512, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(1024, 1024), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-1024, -512), WindowCenter = Vec2(0, 512), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 512) },
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{ InternalRes = Vec2(1024, 512), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(1024, 1024), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-512, -768), WindowCenter = Vec2(0, -256), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 0) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 2048), VirtualRes = Vec2(1024, 1024), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-512, -1024), WindowCenter = Vec2(0, 0), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 512) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(1024, 1024), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-1024, -512), WindowCenter = Vec2(0, 0), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 512) },
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{ InternalRes = Vec2(1024, 512), WindowRes = Vec2(1024, 512), VirtualRes = Vec2(1024, 1024), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-512, -512), WindowCenter = Vec2(0, -256), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 0) },
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{ InternalRes = Vec2(2048, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(1024, 1024), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-512, -512), WindowCenter = Vec2(0, -256), RenderedTopLeft = Vec2(-512, -512), RenderedBottomRight = Vec2(512, 0) },
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{ InternalRes = Vec2(2048, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(2048, 1024), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-1024, -512), WindowCenter = Vec2(0, 0), RenderedTopLeft = Vec2(-1024, -512), RenderedBottomRight = Vec2(1024, 512) },
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{ InternalRes = Vec2(2048, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(512, 2048), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-256, -1024), WindowCenter = Vec2(0, -896), RenderedTopLeft = Vec2(-256, -1024), RenderedBottomRight = Vec2(256, -768) },
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{ InternalRes = Vec2(2048, 1024), WindowRes = Vec2(2048, 1024), VirtualRes = Vec2(1024, 16), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-512, -8), WindowCenter = Vec2(0, 248), RenderedTopLeft = Vec2(-512, -8), RenderedBottomRight = Vec2(512, 8) },
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{ InternalRes = Vec2(1024, 1024), WindowRes = Vec2(1024, 1024), VirtualRes = Vec2(32, 16), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-16, -8), WindowCenter = Vec2(0, 8), RenderedTopLeft = Vec2(-16, -8), RenderedBottomRight = Vec2(16, 8) },
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{ InternalRes = Vec2(1280, 720), WindowRes = Vec2(1920, 1080), VirtualRes = Vec2(427, 242), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-213.5, -121), WindowCenter = Vec2(0, -0.90625), RenderedTopLeft = Vec2(-213.5, -121), RenderedBottomRight = Vec2(213.5, 119.1875) },
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{ InternalRes = Vec2(1280, 720), WindowRes = Vec2(1920, 1200), VirtualRes = Vec2(427, 242), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-213.5, -134.34375), WindowCenter = Vec2(0, -0.90625), RenderedTopLeft = Vec2(-213.5, -121), RenderedBottomRight = Vec2(213.5, 119.1875) },
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{ InternalRes = Vec2(1280, 720), WindowRes = Vec2(2048, 1080), VirtualRes = Vec2(427, 242), VirtualOffset = Vec2(-2, 0), WindowTopLeft = Vec2(-227.73333, -121), WindowCenter = Vec2(0, -0.90625), RenderedTopLeft = Vec2(-213.5, -121), RenderedBottomRight = Vec2(213.5, 119.1875) },
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}
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---Tests all possible test cases.
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---Throws an error in case any test fails.
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local function testToWindow()
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for i, v in ipairs(testTable) do
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Coords.InternalResolution, Coords.WindowResolution, Coords.VirtualResolution = v.InternalRes, v.WindowRes, v.VirtualRes
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Coords.InternalResolution, Coords.WindowResolution, Coords.VirtualResolution, Coords.VirtualOffset = v.InternalRes, v.WindowRes, v.VirtualRes, v.VirtualOffset
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---@type Vec2
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local viewportCenter = Vec2(0, 0)
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@ -193,7 +211,7 @@ end
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---Throws an error in case any test fails.
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local function testToWorld()
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for i, v in ipairs(testTable) do
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Coords.InternalResolution, Coords.WindowResolution, Coords.VirtualResolution = v.InternalRes, v.WindowRes, v.VirtualRes
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Coords.InternalResolution, Coords.WindowResolution, Coords.VirtualResolution, Coords.VirtualOffset = v.InternalRes, v.WindowRes, v.VirtualRes, v.VirtualOffset
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---@type Vec2
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local viewportCenter = Vec2(0, 0)
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@ -214,7 +232,7 @@ end
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---Throws an error in case any test fails.
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local function testValidRenderingRect()
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for i, v in ipairs(testTable) do
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Coords.InternalResolution, Coords.WindowResolution, Coords.VirtualResolution = v.InternalRes, v.WindowRes, v.VirtualRes
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Coords.InternalResolution, Coords.WindowResolution, Coords.VirtualResolution, Coords.VirtualOffset = v.InternalRes, v.WindowRes, v.VirtualRes, v.VirtualOffset
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---@type Vec2
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local viewportCenter = Vec2(0, 0)
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