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EGX mode for CPC

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In this custom mode, odd lines use MODE 0 (wide pixels, 16 colors), and
even lines use MODE 1 (square pixels, 4 colors).

- Add a settings window to the 8-bit effect where you can chose what you
want to draw
- Add the customizations required to make it work in graph.c
- Tweak some other places so it is easier to add other modes later on.
- Groundwork for some more modes: EGX2, ZX spectrum, Game Boy color.
This commit is contained in:
Adrien Destugues
2017-05-06 21:59:24 +02:00
parent f04691145b
commit aef77744e1
6 changed files with 105 additions and 28 deletions
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73
src/buttons_effects.c
View File

@@ -3,7 +3,7 @@
/* Grafx2 - The Ultimate 256-color bitmap paint program
Copyright 2008 Yves Rizoud
Copyright 2007 Adrien Destugues
Copyright 2007-2017 Adrien Destugues
Copyright 1996-2001 Sunset Design (Guillaume Dorme & Karl Maritaud)
Grafx2 is free software; you can redistribute it and/or
@@ -163,41 +163,84 @@ void Menu_tag_colors(char * window_title, byte * table, byte * mode, byte can_ca
Display_cursor();
}
byte Selected_Constraint_Mode = 0;
// Constaint enforcer/checker ------------------------------------------------
void Button_Constraint_mode(void)
void Button_Constraint_mode()
{
int pixel;
if (Main_backups->Pages->Image_mode == IMAGE_MODE_MODE5)
if (Main_backups->Pages->Image_mode >= IMAGE_MODE_MODE5)
{
// Disable
Switch_layer_mode(IMAGE_MODE_LAYERED);
return;
}
if (Main_backups->Pages->Image_mode != IMAGE_MODE_LAYERED ||
Main_backups->Pages->Nb_layers!=5 || (Main_image_width%48))
if (Selected_Constraint_Mode < IMAGE_MODE_MODE5)
Selected_Constraint_Mode = IMAGE_MODE_EGX;
if (Selected_Constraint_Mode == IMAGE_MODE_MODE5)
{
Verbose_message("Error!", "This emulation of Amstrad CPC's Mode5 can only be used on a 5-layer image whose width is a multiple of 48.");
return;
}
for (pixel=0; pixel < Main_image_width*Main_image_height; pixel++)
{
if (Main_backups->Pages->Image[4].Pixels[pixel]>3)
if (Main_backups->Pages->Image_mode != IMAGE_MODE_LAYERED ||
Main_backups->Pages->Nb_layers!=5 || (Main_image_width%48))
{
Verbose_message("Error!", "This emulation of Amstrad CPC's Mode5 needs all pixels of layer 5 to use colors 0-3.");
Verbose_message("Error!", "This emulation of Amstrad CPC's Mode5 can only be used on a 5-layer image whose width is a multiple of 48.");
return;
}
for (pixel=0; pixel < Main_image_width*Main_image_height; pixel++)
{
if (Main_backups->Pages->Image[4].Pixels[pixel]>3)
{
Verbose_message("Error!", "This emulation of Amstrad CPC's Mode5 needs all pixels of layer 5 to use colors 0-3.");
return;
}
}
// TODO set the palette to a CPC one ?
}
// TODO backup
Switch_layer_mode(IMAGE_MODE_MODE5);
// TODO set the palette to a CPC one ?
// TODO backup
Switch_layer_mode(Selected_Constraint_Mode);
}
void Button_Constraint_menu(void)
{
short clicked_button;
T_Dropdown_button* dropdown;
Open_window(154,79,"8-bit constraints");
Window_set_normal_button(21,55,51,14,"Cancel",0,1,KEY_ESC); // 1
Window_set_normal_button(82,55,51,14,"OK" ,0,1,SDLK_RETURN); // 2
dropdown = Window_set_dropdown_button(17, 21, 120, 14, 120, "Constraints", 1, 0, 1, RIGHT_SIDE|LEFT_SIDE, 0); // 3
//Window_dropdown_add_item(dropdown, IMAGE_MODE_ZX, "ZX Spectrum");
//Window_dropdown_add_item(dropdown, IMAGE_MODE_GBC, "Game Boy Color");
Window_dropdown_add_item(dropdown, IMAGE_MODE_EGX, "EGX (CPC)");
//Window_dropdown_add_item(dropdown, IMAGE_MODE_EGX2, "EGX2 (CPC)");
Window_dropdown_add_item(dropdown, IMAGE_MODE_MODE5, "Mode 5 (CPC)");
Update_window_area(0,0,Window_width, Window_height);
Display_cursor();
do
{
clicked_button=Window_clicked_button();
if (clicked_button == 3)
Selected_Constraint_Mode = Window_attribute2;
}
while ( (clicked_button!=1) && (clicked_button!=2) );
Close_window();
if (clicked_button==2) // OK
{
Button_Constraint_mode();
}
Display_cursor();
}
// Tilemap mode