Contents

require_relative 'global'

module AGL
	class Map
		attr_reader :tile_size, :size, :cam
	
		def initialize t_w, t_h, t_x_count, t_y_count, scr_w = 800, scr_h = 600
			@tile_size = Vector.new t_w, t_h
			@size = Vector.new t_x_count, t_y_count
			@cam = Rectangle.new 0, 0, scr_w, scr_h
			@max_x = t_x_count * t_w - scr_w
			@max_y = t_y_count * t_h - scr_h
		end
	
		def get_absolute_size
			Vector.new(@tile_size.x * @size.x, @tile_size.y * @size.y)
		end
	
		def get_center
			Vector.new(@tile_size.x * @size.x / 2, @tile_size.y * @size.y / 2)
		end
	
		def get_screen_pos map_x, map_y
			Vector.new(map_x * @tile_size.x - @cam.x, map_y * @tile_size.y - @cam.y)
		end
	
		def get_map_pos scr_x, scr_y
			Vector.new((scr_x + @cam.x) / @tile_size.x, (scr_y + @cam.y) / @tile_size.y)
		end
	
		def is_in_map v
			v.x >= 0 && v.y >= 0 && v.x < @size.x && v.y < @size.y
		end
	
		def set_camera cam_x, cam_y
			@cam.x = cam_x
			@cam.y = cam_y
			set_bounds
		end
	
		def move_camera x, y
			@cam.x += x
			@cam.y += y
			set_bounds
		end
	
		def set_bounds
			@cam.x = @cam.x.round
			@cam.y = @cam.y.round
			@cam.x = 0 if @cam.x < 0
			@cam.x = @max_x if @cam.x > @max_x
			@cam.y = 0 if @cam.y < 0
			@cam.y = @max_y if @cam.y > @max_y
		
			@min_vis_x = @cam.x / @tile_size.x
			@min_vis_y = @cam.y / @tile_size.y
			@max_vis_x = (@cam.x + @cam.w - 1) / @tile_size.x
			@max_vis_y = (@cam.y + @cam.h - 1) / @tile_size.y

			if @min_vis_y < 0; @min_vis_y = 0
			elsif @min_vis_y > @size.y - 1; @min_vis_y = @size.y - 1; end

			if @max_vis_y < 0; @max_vis_y = 0
			elsif @max_vis_y > @size.y - 1; @max_vis_y = @size.y - 1; end

			if @min_vis_x < 0; @min_vis_x = 0
			elsif @min_vis_x > @size.x - 1; @min_vis_x = @size.x - 1; end

			if @max_vis_x < 0; @max_vis_x = 0
			elsif @max_vis_x > @size.x - 1; @max_vis_x = @size.x - 1; end
		end
	
		def foreach
			for j in @min_vis_y..@max_vis_y
				for i in @min_vis_x..@max_vis_x
					yield i, j, i * @tile_size.x - @cam.x, j * @tile_size.y - @cam.y
				end
			end
		end
	end
end

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
minigl-1.2.3	lib/minigl/map.rb
minigl-1.2.2	lib/minigl/map.rb
minigl-1.2.1	lib/minigl/map.rb
minigl-1.2.0	lib/minigl/map.rb
minigl-1.1.0	lib/minigl/map.rb
minigl-1.0.1	lib/minigl/map.rb