Simgraph refactor

[ceeac]

This WIP patch prefixes all functions declared in simgraph.h with "simgraph_" and groups similar functions together.
This is mostly for consistency, but also to make it immediately obvious where a function is defined (for example get_color_rgb vs. simgraph_get_color_rgb).
The patch is too large to attach here, but is availble here.

To make reviewing and discussing these changes easier, I made a table containing all old and new function names. Let me know what you think.

Group	New name	Old name	Remarks
General	simgraph_init	simgraph_init	Now returns bool to signal success/failure
	simgraph_exit	simgraph_exit
	simgraph_is_display_init	is_display_init
	simgraph_resize	simgraph_resize
	simgraph_get_display_width	display_get_width
	simgraph_get_display_height	display_get_height
	simgraph_set_display_height	display_set_height
	simgraph_set_display_actualwidth	display_set_actual_width
	simgraph_zoom_in	zoom_factor_up
	simgraph_zoom_out	zoom_factor_down
	simgraph_get_tile_raster_width	get_tile_raster_width
	simgraph_get_current_tile_raster_width	get_current_tile_raster_width
	simgraph_get_base_tile_raster_width	get_base_tile_raster_width
	simgraph_set_base_raster_width	display_set_base_raster_width
	simgraph_take_screenshot	display_snapshot
	simgraph_flush_buffer	display_flush_buffer
	simgraph_set_show_pointer	display_show_pointer	Now takes a parameter of type bool
	simgraph_set_pointer_image	display_set_pointer	Only used with USE_SOFTPOINTER
	simgraph_set_show_load_pointer	display_show_load_pointer	Now takes a parameter of type bool
Text	simgraph_load_font	display_load_font
	simgraph_get_char_width	display_get_char_width
	simgraph_font_has_character	has_character
	simgraph_get_next_char	get_next_char
	simgraph_get_prev_char	get_prev_char
	simgraph_get_next_char_with_metrics	get_next_char_with_metrics
	simgraph_get_prev_char_with_metrics	get_prev_char_with_metrics
	simgraph_get_widest_char	display_get_char_max_width
	simgraph_get_text_fit	display_fit_proportional
	simgraph_get_text_width	proportional_string_width
	simgraph_calc_multiline_text_size	display_calc_proportional_multiline_string_len_width	Now returns scr_size
	simgraph_draw_text_rgb	display_proportional_rgb
	simgraph_draw_text_clip_rgb	display_proportional_clip_rgb
	simgraph_draw_multiline_text_rgb	display_multiline_text_rgb
	simgraph_draw_text_ellipsis_rgb	display_proportional_ellipsis_rgb
	simgraph_draw_textbox3d_clip_rgb	display_ddd_proportional_clip
	simgraph_draw_text_outlined_rgb	display_outline_proportional_rgb
	simgraph_draw_text_shadowed_rgb	display_shadow_proportional_rgb
Colors	simgraph_color_idx_to_rgb	color_idx_to_rgb
	simgraph_color_rgb_to_idx	color_rgb_to_idx
	simgraph_get_color_rgb	get_color_rgb
	simgraph_env_t_rgb_to_system_colors	env_t_rgb_to_system_colors
	simgraph_set_player_color_scheme	display_set_player_color_scheme
	simgraph_set_daynight_lights	n/a	new function; replaces direct access of display_day_lights & display_night_lights; COLOUR_DEPTH != 0 only
	simgraph_update_day_night_shift	display_day_night_shift	COLOUR_DEPTH != 0 only
Clip	simgraph_add_poly_clip	add_poly_clip
	simgraph_clear_all_poly_clip	clear_all_poly_clip
	simgraph_activate_ribi_clip	activate_ribi_clip
	simgraph_set_clip_wh	display_set_clip_wh
	simgraph_get_clip_wh	display_get_clip_wh
	simgraph_push_clip_wh	display_push_clip_wh
	simgraph_swap_clip_wh	display_swap_clip_wh
	simgraph_pop_clip_wh	display_pop_clip_wh
Images	simgraph_get_image_count	get_image_count
	simgraph_register_image	register_image
	simgraph_free_all_images_above	display_free_all_images_above
	simgraph_get_base_image_offset	display_get_base_image_offset
	simgraph_get_image_offset	display_get_image_offset
	simgraph_fit_img_to_width	display_fit_img_to_width
Dirty	simgraph_mark_img_dirty	display_mark_img_dirty
	simgraph_mark_rect_dirty_wc	mark_rect_dirty_wc
	simgraph_mark_rect_dirty_clip	mark_rect_dirty_clip
	simgraph_mark_screen_dirty	mark_screen_dirty
Drawing	simgraph_draw_scroll_band	display_scroll_band
	simgraph_draw_img_aligned	display_img_aligned
	simgraph_draw_img_aux	display_img_aux
	simgraph_draw_rezoomed_img_blend	display_rezoomed_img_blend
	simgraph_draw_img_blend	display_img_blend
	simgraph_draw_rezoomed_img_alpha	display_rezoomed_img_alpha
	simgraph_draw_img_alpha	display_img_alpha
	simgraph_draw_color_img	display_color_img
	simgraph_draw_base_img	display_base_img
	simgraph_draw_img_stretch	display_img_stretch
	simgraph_draw_img_stretch_blend	display_img_stretch_blend
	simgraph_draw_base_img_blend	display_base_img_blend
	simgraph_draw_base_img_alpha	display_base_img_alpha
	simgraph_draw_box3d_rgb	display_ddd_box_rgb
	simgraph_draw_box3d_clip_rgb	display_ddd_box_clip_rgb
	simgraph_draw_line_solid_rgb	display_direct_line_rgb
	simgraph_draw_line_dotted_rgb	display_direct_line_dotted_rgb
	simgraph_draw_circle_rgb	display_circle_rgb
	simgraph_draw_filled_circle_rgb	display_filled_circle_rgb
	simgraph_draw_bezier_rgb	draw_bezier_rgb
	simgraph_set_display_procs	display_set_image_proc
	simgraph_blend_colors	display_blend_colors
	simgraph_blend_wh_rgb	display_blend_wh_rgb
	simgraph_draw_fillbox_wh_rgb	display_fillbox_wh_rgb
	simgraph_draw_fillbox_wh_clip_rgb	display_fillbox_wh_clip_rgb
	simgraph_draw_vline_wh_clip_rgb	display_vline_wh_clip_rgb
	simgraph_draw_array_wh	display_array_wh

[Dwachs]

why all these sim_graph prefixes?

[Mariculous]

Why do you prefix them instead of using namespaces or a class?
C++ will always be a mystery to me.

[prissi]

What is the purpose? I could understand to replace/add "display_" to simgraphe_ and other names. Moreover, such a renaming does not respect the "recommendation" of functions to start with either "get_", "set_", or "is_" if they are gettting, setting a value or query a boolean. So it should be "get_display_width" instead "display_get_width".

However, such a renaming will break still waiting on my harddisk. And it will make consistency between extended and standard harder to maintain, unless applied there too. But then the chyanges in the meantime will be hard too merge.

[Ters]

Longer names makes it more tedious to write stuff without an IDE to autocomplete, but with an IDE, one does not need prefixes to find out where things are defined.

I don't see any point in simgraph_init returning any failure state. There is nothing to do about it, so let it just call exit and be done with it.