refactor file structure

src/engine/render/rect.c

@@ -0,0 +1,44 @@
+#include <dangerzone/engine.h>
+#include <dangerzone/render/misc.h>
+#include <dangerzone/render/rect.h>
+
+#include <stdint.h>
+
+/**
+ * draws a rectangle with its left-top corner at (x,y) with
+ * a width of 'w' and height of 'h' filled with color 'color'
+ */ 
+void
+put_rect(
+	uint32_t x, 
+	uint32_t y, 
+	uint32_t w, 
+	uint32_t h,
+	uint32_t color
+) {
+	for (int i = x; i < x + w; i++) {
+		for (int j = y; j < y + h; j++) {
+			put_pixel(i, j, color);
+		}
+	}
+	mark_dirty_rect(x, y, w, h);
+}
+
+void
+clear_rect(int x, int y, int w, int h, uint32_t color)
+{
+    for (int py = y; py < y + h; ++py) {
+        for (int px = x; px < x + w; ++px) {
+            if (px >= 0 &&
+                px < game_state->width &&
+                py >= 0 &&
+                py < game_state->height) {
+                game_state->framebuffer[
+                    py * game_state->width + px
+                ] = color;
+            }
+        }
+    }
+
+    mark_dirty_rect(x, y, w, h);
+}