commit 2a91a5efd4cf52d48f985a6a3c7536f4fcbddc27
Author: Nefrace <nefrace@gmail.com>
Date:   Sat Mar 16 16:02:18 2024 +0300

    init

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2eafe6a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+repico
+ols.json
diff --git a/main.odin b/main.odin
new file mode 100644
index 0000000..5e56239
--- /dev/null
+++ b/main.odin
@@ -0,0 +1,171 @@
+package main
+
+import "core:fmt"
+import rl "vendor:raylib"
+import "core:mem"
+
+W :: 400
+H :: 300
+CW :: 160
+CH :: 205
+
+width : int = W
+height : int = H
+zoom : int = 1
+
+Cart :: struct {
+	image : rl.Image,
+	texture : rl.Texture,
+	loaded : bool,
+}
+
+WrongSizeErrorTimer : i32 = 0
+
+main :: proc() {
+	when ODIN_DEBUG {
+		track : mem.Tracking_Allocator
+		mem.tracking_allocator_init(&track, context.allocator)
+		context.allocator = mem.tracking_allocator(&track)
+
+		defer {
+			if len(track.allocation_map) > 0 {
+				fmt.eprintf("=== %v allocations not freed: ===\n", len(track.allocation_map))
+				for _, entry in track.allocation_map {
+					fmt.eprintf("- %v bytes @ %v\n", entry.size, entry.location)
+				}
+			}
+			if len(track.bad_free_array) > 0 {
+				fmt.eprintf("=== %v incorrect frees: ===\n", len(track.bad_free_array))
+				for entry in track.bad_free_array {
+					fmt.eprintf("- %p @ %v\n", entry.memory, entry.location)
+				}
+			}
+			mem.tracking_allocator_destroy(&track)
+		}
+	}
+	
+	cart := Cart{}
+	target := Cart{}
+
+	rl.InitWindow(W, H, "PicoRepico")
+	rl.SetTargetFPS(60)
+
+	hw : f32 = auto_cast width / 2
+	hh : f32 = auto_cast height / 2
+
+
+	buttonCartRect := rl.Rectangle{
+		x = hw - CW - 20,
+		y = 8,
+		width = CW,
+		height = CH,
+	}
+	buttonTargetRect := rl.Rectangle{
+		x = hw + 20,
+		y = 8,
+		width = CW,
+		height = CH,
+	}
+	convertButtonRect := rl.Rectangle{
+		x = hw - 40,
+		y = auto_cast height - 38,
+		width = 80,
+		height = 30,
+	}
+
+	for !rl.WindowShouldClose() {
+		if WrongSizeErrorTimer > 0 {
+			WrongSizeErrorTimer -= 1
+		}
+
+		mouse := rl.GetMousePosition()
+		if rl.IsFileDropped() {
+			droppedFiles := rl.LoadDroppedFiles()
+			defer rl.UnloadDroppedFiles(droppedFiles)
+
+			if droppedFiles.count == 1 {
+				f := droppedFiles.paths[0]
+				if mouse.x <= hw {
+					fmt.println("Got cart file: ", f)
+					if loadCart(&cart, f) == .Wrong_Size {
+						WrongSizeErrorTimer = 180
+					}
+				}
+				if mouse.x > hw {
+					fmt.println("Got target file: ", f)
+					if loadCart(&target, f) == .Wrong_Size {
+						WrongSizeErrorTimer = 180
+					}
+				}
+			}
+		}
+
+		rl.BeginDrawing()
+		rl.GuiDummyRec(rl.Rectangle{0, 0, auto_cast width, auto_cast height}, "")
+
+		rl.GuiButton(buttonCartRect, "Place here cart")
+		rl.GuiButton(buttonTargetRect, "Place here target")
+		
+		if WrongSizeErrorTimer > 0 {
+			rl.GuiLabel(rl.Rectangle{8, auto_cast height - 38, 100, 30}, "WRONG IMAGE SIZE")
+		}
+
+		if cart.loaded {
+			rl.DrawTexture(cart.texture, auto_cast buttonCartRect.x, auto_cast buttonCartRect.y, rl.WHITE)
+		}
+		if target.loaded {
+			rl.DrawTexture(target.texture, auto_cast buttonTargetRect.x, auto_cast buttonTargetRect.y, rl.WHITE)
+		}
+
+		if rl.GuiButton(convertButtonRect, "CONVERT!") { convertCart(&cart, &target) }
+		rl.EndDrawing()
+	}
+
+	unloadCart(&cart)
+	unloadCart(&target)
+} 
+
+CartLoadError :: enum {
+	None,
+	Wrong_Size,
+	Allocation_Error,
+}
+
+loadCart :: proc(target: ^Cart, filename: cstring) -> CartLoadError {
+	unloadCart(target)
+	target.image = rl.LoadImage(filename)
+	if target.image.width != CW || target.image.height != CH {
+		return CartLoadError.Wrong_Size
+	}
+	target.texture = rl.LoadTextureFromImage(target.image)
+	target.loaded = true
+	return CartLoadError.None
+}
+
+unloadCart :: proc(target: ^Cart) {
+	if target.loaded {
+		rl.UnloadTexture(target.texture)
+		rl.MemFree(target.image.data)
+	}
+	target.loaded = false
+}
+
+convertCart :: proc(cart: ^Cart, target: ^Cart) {
+	newCartImage := rl.ImageCopy(target.image)
+	for x : i32 = 0; x < newCartImage.width; x += 1 {
+		for y : i32 = 0; y < newCartImage.height; y += 1{
+			targetCol := rl.GetImageColor(target.image, x, y)
+			sourceCol := rl.GetImageColor(cart.image, x, y)
+			newCol := rl.Color{
+				targetCol.r & 0b11111100 | sourceCol.r & 0b00000011,
+				targetCol.g & 0b11111100 | sourceCol.g & 0b00000011,
+				targetCol.b & 0b11111100 | sourceCol.b & 0b00000011,
+				targetCol.a & 0b11111100 | sourceCol.a & 0b00000011,
+			}
+			rl.ImageDrawPixel(&newCartImage, x, y, newCol)
+		}
+	}
+
+	rl.ExportImage(newCartImage, "output.p8.png")
+	fmt.println("DONE!")
+}
diff --git a/nfrc.png b/nfrc.png
new file mode 100644
index 0000000..9d2f214
Binary files /dev/null and b/nfrc.png differ