Mercurial > repos > blastem
annotate io.c @ 421:d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
author | Mike Pavone <pavone@retrodev.com> |
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date | Tue, 25 Jun 2013 19:20:39 -0700 |
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children | 440efd7d27a9 |
rev | line source |
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421
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1 #include "io.h" |
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2 #include "blastem.h" |
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3 #include "render.h" |
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4 |
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5 enum { |
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6 BIND_NONE, |
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7 BIND_GAMEPAD1, |
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8 BIND_GAMEPAD2, |
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9 BIND_UI |
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10 }; |
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11 |
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12 typedef enum { |
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13 UI_DEBUG_MODE_INC, |
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14 UI_DEBUG_PAL_INC, |
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15 UI_ENTER_DEBUGGER |
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16 } ui_action; |
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17 |
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18 typedef struct { |
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19 uint8_t bind_type; |
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20 uint8_t subtype_a; |
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21 uint8_t subtype_b; |
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22 uint8_t value; |
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23 } keybinding; |
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24 |
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25 typedef struct { |
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26 keybinding bindings[4]; |
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27 uint8_t state; |
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28 } joydpad; |
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29 |
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30 keybinding * bindings[256]; |
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31 keybinding * joybindings[MAX_JOYSTICKS]; |
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32 joydpad * joydpads[MAX_JOYSTICKS]; |
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33 const uint8_t dpadbits[] = {RENDER_DPAD_UP, RENDER_DPAD_DOWN, RENDER_DPAD_LEFT, RENDER_DPAD_RIGHT}; |
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34 |
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35 void bind_key(int keycode, uint8_t bind_type, uint8_t subtype_a, uint8_t subtype_b, uint8_t value) |
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36 { |
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37 int bucket = keycode >> 8 & 0xFF; |
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38 if (!bindings[bucket]) { |
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39 bindings[bucket] = malloc(sizeof(keybinding) * 256); |
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40 memset(bindings[bucket], 0, sizeof(keybinding) * 256); |
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41 } |
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42 int idx = keycode & 0xFF; |
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43 bindings[bucket][idx].bind_type = bind_type; |
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44 bindings[bucket][idx].subtype_a = subtype_a; |
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45 bindings[bucket][idx].subtype_b = subtype_b; |
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46 bindings[bucket][idx].value = value; |
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47 } |
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48 |
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49 void bind_button(int joystick, int button, uint8_t bind_type, uint8_t subtype_a, uint8_t subtype_b, uint8_t value) |
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50 { |
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51 if (joystick >= MAX_JOYSTICKS) { |
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52 return; |
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53 } |
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54 if (!joybindings[joystick]) { |
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55 int num = render_joystick_num_buttons(joystick); |
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56 if (!num) { |
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57 return; |
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58 } |
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59 joybindings[joystick] = malloc(sizeof(keybinding)*num); |
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60 memset(joybindings[joystick], 0, sizeof(keybinding)*num); |
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61 } |
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62 joybindings[joystick][button].bind_type = bind_type; |
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63 joybindings[joystick][button].subtype_a = subtype_a; |
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64 joybindings[joystick][button].subtype_b = subtype_b; |
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65 joybindings[joystick][button].value = value; |
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66 } |
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67 |
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68 void bind_dpad(int joystick, int dpad, int direction, uint8_t bind_type, uint8_t subtype_a, uint8_t subtype_b, uint8_t value) |
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69 { |
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70 if (joystick >= MAX_JOYSTICKS) { |
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71 return; |
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72 } |
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73 if (!joydpads[joystick]) { |
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74 int num = render_joystick_num_hats(joystick); |
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75 if (!num) { |
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76 return; |
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77 } |
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78 joydpads[joystick] = malloc(sizeof(joydpad)*num); |
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79 memset(joydpads[joystick], 0, sizeof(joydpad)*num); |
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80 } |
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81 for (int i = 0; i < 4; i ++) { |
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82 if (dpadbits[i] & direction) { |
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83 joydpads[joystick][dpad].bindings[i].bind_type = bind_type; |
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84 joydpads[joystick][dpad].bindings[i].subtype_a = subtype_a; |
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85 joydpads[joystick][dpad].bindings[i].subtype_b = subtype_b; |
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86 joydpads[joystick][dpad].bindings[i].value = value; |
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87 break; |
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88 } |
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89 } |
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90 } |
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91 |
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92 #define GAMEPAD_BUTTON(PRI_SLOT, SEC_SLOT, VALUE) (PRI_SLOT << 12 | SEC_SLOT << 8 | VALUE) |
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93 |
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94 #define DPAD_UP GAMEPAD_BUTTON(GAMEPAD_TH0, GAMEPAD_TH1, 0x01) |
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95 #define BUTTON_Z GAMEPAD_BUTTON(GAMEPAD_EXTRA, GAMEPAD_NONE, 0x01) |
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96 #define DPAD_DOWN GAMEPAD_BUTTON(GAMEPAD_TH0, GAMEPAD_TH1, 0x02) |
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97 #define BUTTON_Y GAMEPAD_BUTTON(GAMEPAD_EXTRA, GAMEPAD_NONE, 0x02) |
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98 #define DPAD_LEFT GAMEPAD_BUTTON(GAMEPAD_TH1, GAMEPAD_NONE, 0x04) |
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99 #define BUTTON_X GAMEPAD_BUTTON(GAMEPAD_EXTRA, GAMEPAD_NONE, 0x04) |
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100 #define DPAD_RIGHT GAMEPAD_BUTTON(GAMEPAD_TH1, GAMEPAD_NONE, 0x08) |
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101 #define BUTTON_MODE GAMEPAD_BUTTON(GAMEPAD_EXTRA, GAMEPAD_NONE, 0x08) |
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102 #define BUTTON_A GAMEPAD_BUTTON(GAMEPAD_TH0, GAMEPAD_NONE, 0x10) |
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103 #define BUTTON_B GAMEPAD_BUTTON(GAMEPAD_TH1, GAMEPAD_NONE, 0x10) |
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104 #define BUTTON_START GAMEPAD_BUTTON(GAMEPAD_TH0, GAMEPAD_NONE, 0x20) |
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105 #define BUTTON_C GAMEPAD_BUTTON(GAMEPAD_TH1, GAMEPAD_NONE, 0x20) |
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106 |
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107 void bind_gamepad(int keycode, int gamepadnum, int button) |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
108 { |
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Mike Pavone <pavone@retrodev.com>
parents:
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|
109 |
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parents:
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|
110 if (gamepadnum < 1 || gamepadnum > 2) { |
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parents:
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|
111 return; |
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Mike Pavone <pavone@retrodev.com>
parents:
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|
112 } |
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Mike Pavone <pavone@retrodev.com>
parents:
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|
113 uint8_t bind_type = gamepadnum - 1 + BIND_GAMEPAD1; |
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|
114 bind_key(keycode, bind_type, button >> 12, button >> 8 & 0xF, button & 0xFF); |
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Mike Pavone <pavone@retrodev.com>
parents:
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|
115 } |
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Mike Pavone <pavone@retrodev.com>
parents:
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|
116 |
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Mike Pavone <pavone@retrodev.com>
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|
117 void bind_button_gamepad(int joystick, int joybutton, int gamepadnum, int padbutton) |
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|
118 { |
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|
119 if (gamepadnum < 1 || gamepadnum > 2) { |
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parents:
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|
120 return; |
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Mike Pavone <pavone@retrodev.com>
parents:
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|
121 } |
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|
122 uint8_t bind_type = gamepadnum - 1 + BIND_GAMEPAD1; |
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parents:
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123 bind_button(joystick, joybutton, bind_type, padbutton >> 12, padbutton >> 8 & 0xF, padbutton & 0xFF); |
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Mike Pavone <pavone@retrodev.com>
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|
124 } |
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Mike Pavone <pavone@retrodev.com>
parents:
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125 |
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|
126 void bind_dpad_gamepad(int joystick, int dpad, uint8_t direction, int gamepadnum, int button) |
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|
127 { |
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Mike Pavone <pavone@retrodev.com>
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|
128 if (gamepadnum < 1 || gamepadnum > 2) { |
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129 return; |
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|
130 } |
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131 uint8_t bind_type = gamepadnum - 1 + BIND_GAMEPAD1; |
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132 bind_dpad(joystick, dpad, direction, bind_type, button >> 12, button >> 8 & 0xF, button & 0xFF); |
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|
133 } |
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134 |
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Mike Pavone <pavone@retrodev.com>
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|
135 void bind_ui(int keycode, ui_action action) |
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|
136 { |
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|
137 bind_key(keycode, BIND_UI, action, 0, 0); |
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|
138 } |
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Mike Pavone <pavone@retrodev.com>
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|
139 |
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Mike Pavone <pavone@retrodev.com>
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|
140 void handle_binding_down(keybinding * binding) |
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141 { |
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|
142 switch(binding->bind_type) |
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Mike Pavone <pavone@retrodev.com>
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|
143 { |
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Mike Pavone <pavone@retrodev.com>
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|
144 case BIND_GAMEPAD1: |
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|
145 case BIND_GAMEPAD2: |
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146 if (binding->subtype_a <= GAMEPAD_EXTRA) { |
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147 genesis->ports[binding->bind_type - BIND_GAMEPAD1].input[binding->subtype_a] |= binding->value; |
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|
148 } |
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|
149 if (binding->subtype_b <= GAMEPAD_EXTRA) { |
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150 genesis->ports[binding->bind_type - BIND_GAMEPAD1].input[binding->subtype_b] |= binding->value; |
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Mike Pavone <pavone@retrodev.com>
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|
151 } |
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|
152 break; |
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|
153 } |
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|
154 } |
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|
155 |
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|
156 void handle_keydown(int keycode) |
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|
157 { |
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|
158 int bucket = keycode >> 8 & 0xFF; |
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|
159 if (!bindings[bucket]) { |
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|
160 return; |
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Mike Pavone <pavone@retrodev.com>
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|
161 } |
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|
162 int idx = keycode & 0xFF; |
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|
163 keybinding * binding = bindings[bucket] + idx; |
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parents:
diff
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|
164 handle_binding_down(binding); |
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|
165 } |
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parents:
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|
166 |
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parents:
diff
changeset
|
167 void handle_joydown(int joystick, int button) |
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parents:
diff
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|
168 { |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
169 if (!joybindings[joystick]) { |
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parents:
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|
170 return; |
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Mike Pavone <pavone@retrodev.com>
parents:
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|
171 } |
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parents:
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|
172 keybinding * binding = joybindings[joystick] + button; |
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parents:
diff
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|
173 handle_binding_down(binding); |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
174 } |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
175 |
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diff
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|
176 uint8_t ui_debug_mode = 0; |
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parents:
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|
177 uint8_t ui_debug_pal = 0; |
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parents:
diff
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|
178 |
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parents:
diff
changeset
|
179 void handle_binding_up(keybinding * binding) |
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parents:
diff
changeset
|
180 { |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
181 switch(binding->bind_type) |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
182 { |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
183 case BIND_GAMEPAD1: |
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parents:
diff
changeset
|
184 case BIND_GAMEPAD2: |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
185 if (binding->subtype_a <= GAMEPAD_EXTRA) { |
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parents:
diff
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|
186 genesis->ports[binding->bind_type - BIND_GAMEPAD1].input[binding->subtype_a] &= ~binding->value; |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
187 } |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
188 if (binding->subtype_b <= GAMEPAD_EXTRA) { |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
189 genesis->ports[binding->bind_type - BIND_GAMEPAD1].input[binding->subtype_b] &= ~binding->value; |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
190 } |
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Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
191 break; |
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Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
192 case BIND_UI: |
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parents:
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|
193 switch (binding->subtype_a) |
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Mike Pavone <pavone@retrodev.com>
parents:
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|
194 { |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
195 case UI_DEBUG_MODE_INC: |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
196 ui_debug_mode++; |
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Mike Pavone <pavone@retrodev.com>
parents:
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|
197 if (ui_debug_mode == 4) { |
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parents:
diff
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|
198 ui_debug_mode = 0; |
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parents:
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|
199 } |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
200 render_debug_mode(ui_debug_mode); |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
201 break; |
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Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
202 case UI_DEBUG_PAL_INC: |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
203 ui_debug_pal++; |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
204 if (ui_debug_pal == 4) { |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
205 ui_debug_pal = 0; |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
206 } |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
207 render_debug_pal(ui_debug_pal); |
d0cacb4ade0b
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
208 break; |
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Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
209 case UI_ENTER_DEBUGGER: |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
210 break_on_sync = 1; |
d0cacb4ade0b
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
211 break; |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
212 } |
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Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
213 break; |
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
214 } |
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
215 } |
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
216 |
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Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
217 void handle_keyup(int keycode) |
d0cacb4ade0b
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
218 { |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
219 int bucket = keycode >> 8 & 0xFF; |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
220 if (!bindings[bucket]) { |
d0cacb4ade0b
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Mike Pavone <pavone@retrodev.com>
parents:
diff
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|
221 return; |
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
222 } |
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223 int idx = keycode & 0xFF; |
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224 keybinding * binding = bindings[bucket] + idx; |
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225 handle_binding_up(binding); |
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226 } |
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227 |
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228 void handle_joyup(int joystick, int button) |
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229 { |
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230 if (!joybindings[joystick]) { |
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231 return; |
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232 } |
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233 keybinding * binding = joybindings[joystick] + button; |
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234 handle_binding_up(binding); |
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235 } |
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236 |
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237 void handle_joy_dpad(int joystick, int dpadnum, uint8_t value) |
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238 { |
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239 if (!joydpads[joystick]) { |
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240 return; |
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241 } |
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242 joydpad * dpad = joydpads[joystick] + dpadnum; |
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243 uint8_t newdown = (value ^ dpad->state) & value; |
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244 uint8_t newup = ((~value) ^ (~dpad->state)) & (~value); |
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245 dpad->state = value; |
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246 for (int i = 0; i < 4; i++) { |
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247 if (newdown & dpadbits[i]) { |
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248 handle_binding_down(dpad->bindings + i); |
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249 } else if(newup & dpadbits[i]) { |
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250 handle_binding_up(dpad->bindings + i); |
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251 } |
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252 } |
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253 } |
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254 |
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255 void set_keybindings() |
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256 { |
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257 bind_gamepad(RENDERKEY_UP, 1, DPAD_UP); |
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258 bind_gamepad(RENDERKEY_DOWN, 1, DPAD_DOWN); |
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259 bind_gamepad(RENDERKEY_LEFT, 1, DPAD_LEFT); |
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260 bind_gamepad(RENDERKEY_RIGHT, 1, DPAD_RIGHT); |
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261 bind_gamepad('a', 1, BUTTON_A); |
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262 bind_gamepad('s', 1, BUTTON_B); |
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263 bind_gamepad('d', 1, BUTTON_C); |
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264 bind_gamepad('q', 1, BUTTON_X); |
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265 bind_gamepad('w', 1, BUTTON_Y); |
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266 bind_gamepad('e', 1, BUTTON_Z); |
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267 bind_gamepad('\r', 1, BUTTON_START); |
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268 bind_gamepad('f', 1, BUTTON_MODE); |
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269 bind_ui('[', UI_DEBUG_MODE_INC); |
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270 bind_ui(']', UI_DEBUG_PAL_INC); |
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271 bind_ui('u', UI_ENTER_DEBUGGER); |
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272 |
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273 bind_dpad_gamepad(0, 0, RENDER_DPAD_UP, 2, DPAD_UP); |
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274 bind_dpad_gamepad(0, 0, RENDER_DPAD_DOWN, 2, DPAD_DOWN); |
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275 bind_dpad_gamepad(0, 0, RENDER_DPAD_LEFT, 2, DPAD_LEFT); |
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276 bind_dpad_gamepad(0, 0, RENDER_DPAD_RIGHT, 2, DPAD_RIGHT); |
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277 bind_button_gamepad(0, 0, 2, BUTTON_A); |
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278 bind_button_gamepad(0, 1, 2, BUTTON_B); |
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279 bind_button_gamepad(0, 2, 2, BUTTON_C); |
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280 bind_button_gamepad(0, 3, 2, BUTTON_X); |
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281 bind_button_gamepad(0, 4, 2, BUTTON_Y); |
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282 bind_button_gamepad(0, 5, 2, BUTTON_Z); |
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283 bind_button_gamepad(0, 6, 2, BUTTON_START); |
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284 bind_button_gamepad(0, 7, 2, BUTTON_MODE); |
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285 } |
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286 |
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287 #define TH 0x40 |
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288 #define TH_TIMEOUT 8000 |
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289 |
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290 void io_adjust_cycles(io_port * pad, uint32_t current_cycle, uint32_t deduction) |
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291 { |
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292 /*uint8_t control = pad->control | 0x80; |
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293 uint8_t th = control & pad->output; |
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294 if (pad->input[GAMEPAD_TH0] || pad->input[GAMEPAD_TH1]) { |
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295 printf("adjust_cycles | control: %X, TH: %X, GAMEPAD_TH0: %X, GAMEPAD_TH1: %X, TH Counter: %d, Timeout: %d, Cycle: %d\n", control, th, pad->input[GAMEPAD_TH0], pad->input[GAMEPAD_TH1], pad->th_counter,pad->timeout_cycle, current_cycle); |
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296 }*/ |
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297 if (current_cycle >= pad->timeout_cycle) { |
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298 pad->th_counter = 0; |
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299 } else { |
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300 pad->timeout_cycle -= deduction; |
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301 } |
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302 } |
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303 |
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304 void io_data_write(io_port * pad, uint8_t value, uint32_t current_cycle) |
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305 { |
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306 if (pad->control & TH) { |
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307 //check if TH has changed |
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308 if ((pad->output & TH) ^ (value & TH)) { |
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309 if (current_cycle >= pad->timeout_cycle) { |
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310 pad->th_counter = 0; |
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311 } |
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312 if (!(value & TH)) { |
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313 pad->th_counter++; |
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314 } |
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315 pad->timeout_cycle = current_cycle + TH_TIMEOUT; |
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316 } |
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317 } |
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318 pad->output = value; |
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319 } |
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320 |
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321 uint8_t io_data_read(io_port * pad, uint32_t current_cycle) |
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322 { |
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323 uint8_t control = pad->control | 0x80; |
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324 uint8_t th = control & pad->output; |
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325 uint8_t input; |
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326 if (current_cycle >= pad->timeout_cycle) { |
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327 pad->th_counter = 0; |
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328 } |
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329 /*if (pad->input[GAMEPAD_TH0] || pad->input[GAMEPAD_TH1]) { |
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330 printf("io_data_read | control: %X, TH: %X, GAMEPAD_TH0: %X, GAMEPAD_TH1: %X, TH Counter: %d, Timeout: %d, Cycle: %d\n", control, th, pad->input[GAMEPAD_TH0], pad->input[GAMEPAD_TH1], pad->th_counter,pad->timeout_cycle, context->current_cycle); |
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331 }*/ |
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332 if (th) { |
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333 if (pad->th_counter == 3) { |
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334 input = pad->input[GAMEPAD_EXTRA]; |
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335 } else { |
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336 input = pad->input[GAMEPAD_TH1]; |
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337 } |
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338 } else { |
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339 if (pad->th_counter == 3) { |
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340 input = pad->input[GAMEPAD_TH0] | 0xF; |
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341 } else if(pad->th_counter == 4) { |
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342 input = pad->input[GAMEPAD_TH0] & 0x30; |
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343 } else { |
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344 input = pad->input[GAMEPAD_TH0] | 0xC; |
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345 } |
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346 } |
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347 uint8_t value = ((~input) & (~control)) | (pad->output & control); |
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348 /*if (pad->input[GAMEPAD_TH0] || pad->input[GAMEPAD_TH1]) { |
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349 printf ("value: %X\n", value); |
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350 }*/ |
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351 return value; |
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352 } |
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353 |
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354 |