Initial Commit

z_gbdk_playground_original/drawing/Makefile

@@ -0,0 +1,16 @@
+AS = lcc -c
+CC = lcc -Wa-l -Wl-m
+
+BIN = drawing.gb
+OBJS = drawing.o
+
+all: $(BIN)
+
+%.s: %.ms
+	maccer -o $@ $<
+
+$(BIN): $(OBJS)
+	$(CC) -o $(BIN) $(OBJS)
+
+clean:
+	rm -rf $(BIN) $(OBJS) *~

z_gbdk_playground_original/drawing/README.md

@@ -0,0 +1,5 @@
+# Drawing
+
+![](screenshot.png)
+
+Demonstrates built-in GBDK drawing functions. Operate the D-Pad to use the plot function to draw on the screen. Press the A Button to change plot point colors (Black, White, Dark Gray, Light Gray). Press the B button to clear the screen.

z_gbdk_playground_original/drawing/drawing.c

@@ -0,0 +1,41 @@
+#include <gb/gb.h>
+#include <gb/drawing.h>
+
+UINT8 x = 1, y = 1, i = 3, j, f;
+
+void main() {
+	color(BLACK, WHITE, SOLID); //  forecolor, backcolor, mode [Colors: WHITE (0), LTGREY (1), DKGREY(2), BLACK (3)]
+	circle(100, 60, 30, M_FILL); // x, y, radius, style (M_FILL or M_NOFILL)
+	line(40, 40, 50, 50); // x1, y1, x2, y2
+	box(120, 125, 125, 135, M_NOFILL); // x1, y1, x2, y2, style (M_FILL or M_NOFILL)
+	plot_point(3, 4); // Plot a single pixel on the screen
+	gotogxy(18, 15); // Places you at these coordinates
+	gprintf("Hi"); // When using the drawing library you must use gprintf instead of printf
+
+	while (1) {
+		if (joypad() == J_UP && y != 0)
+			y--;
+		if (joypad() == J_DOWN && y != 143)
+			y++;
+		if (joypad() == J_LEFT && x != 0)
+			x--;
+		if (joypad() == J_RIGHT && x != 159)
+			x++;
+		if (joypad() == J_A) { // Change colors
+			waitpadup();
+			i++;
+			if (i > 3)
+				i = 0;
+		}
+		if (joypad() == J_B) { // Function to 'clear' the screen
+			for (j = 0; j < 20; j++) { // GB screen is 20 columns wide and 18 columns tall
+				for (f = 0; f < 18; f++) { 
+					gotogxy(j, f);
+					wrtchr(' '); // Use wrtchr to place a character when using the drawing library
+				}
+			}
+		}
+		plot(x, y, i, SOLID); // Draws a pixel on the screen (x, y, color, mode)
+		delay(10);
+	}
+}