Initial commit: base-road-network copy

src/draw.odin

@@ -0,0 +1,49 @@
+package main
+
+import "core:fmt"
+import rl "vendor:raylib"
+
+import "common"
+
+// Main drawing function
+draw :: proc(self: ^Simulator, pos: rl.Vector2) {
+	rl.ClearBackground(rl.LIGHTGRAY)
+	
+	// draw roads
+	for &road, index in self.roads {
+		start := road.nodes[0]
+		end := road.nodes[1]
+		
+		road_colour: rl.Color
+		if road, ok := self.highlighted_road.?; ok && road == u32(index) && self.delete_mode {
+			road_colour = common.ROAD_HIGHLIGHT_COLOUR
+		} else do road_colour = common.ROAD_COLOUR
+		
+		rl.DrawLineEx(self.nodes[start].pos, self.nodes[end].pos, common.ROAD_SIZE, road_colour)
+	}
+	
+	// draw nodes
+	for &node in self.nodes {
+		// draws the snapping radius if key is held down
+		if self.show_details do rl.DrawCircleV(node.pos, common.NODE_SNAP_RADIUS * common.NODE_RADIUS, common.NODE_SNAP_COLOUR)
+		// draws the node
+		rl.DrawCircleV(node.pos, common.NODE_RADIUS, common.NODE_DONE_COLOUR)
+	}
+	
+	// draw temp road if exists
+	if val, ok := self.temp_node.?; ok {
+		rl.DrawLineEx(self.nodes[val].pos, pos, common.ROAD_SIZE, common.ROAD_COLOUR)
+		
+		rl.DrawCircleV(self.nodes[val].pos, common.NODE_RADIUS, common.NODE_BUILD_COLOUR)
+		rl.DrawCircleV(pos, common.NODE_RADIUS, common.NODE_CURSOR_COLOUR)
+	}
+	
+	draw_ui(self)
+}
+
+// Drawing UI text, mostly for debugging purposes
+@(private="file")
+draw_ui :: proc(self: ^Simulator) {
+	entity_count := fmt.ctprintf("Nodes: %d\nRoads: %d", len(self.nodes), len(self.roads))
+	rl.DrawText(entity_count, i32(common.WIDTH - 13 * len(entity_count)), common.HEIGHT - 2 * common.TEXT_SIZE, common.TEXT_SIZE, common.TEXT_COLOUR)
+}