1 | // |
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2 | // Monsterz |
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3 | // |
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4 | // Copyright: (c) 2005-2011 Sam Hocevar <sam@hocevar.net> |
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5 | // This program is free software; you can redistribute it and/or |
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6 | // modify it under the terms of the Do What The Fuck You Want To |
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7 | // Public License, Version 2, as published by Sam Hocevar. See |
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8 | // http://sam.zoy.org/projects/COPYING.WTFPL for more details. |
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9 | // |
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10 | |
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11 | #if defined HAVE_CONFIG_H |
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12 | # include "config.h" |
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13 | #endif |
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14 | |
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15 | #include <cstdio> |
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16 | #include <cmath> |
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17 | |
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18 | #include "core.h" |
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19 | #include "piece.h" |
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20 | #include "monsterz.h" |
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21 | |
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22 | /* |
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23 | * Piece implementation class |
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24 | */ |
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25 | |
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26 | class PieceData |
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27 | { |
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28 | friend class Piece; |
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29 | |
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30 | private: |
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31 | Emitter *emitter; |
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32 | Piece *above, *below; |
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33 | int tiler; |
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34 | int2 cell, pos, src, dst; |
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35 | int id; |
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36 | float speed, timer; |
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37 | |
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38 | enum |
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39 | { |
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40 | IDLE, |
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41 | BLINK, |
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42 | GRAB, |
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43 | UNGRAB, |
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44 | MOVE, |
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45 | POP, |
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46 | DEAD, |
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47 | } |
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48 | state; |
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49 | }; |
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50 | |
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51 | /* |
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52 | * Public Piece class |
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53 | */ |
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54 | |
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55 | Piece::Piece(Emitter *emitter, int2 cell, int id) |
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56 | : data(new PieceData()) |
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57 | { |
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58 | data->emitter = emitter; |
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59 | Ticker::Ref(emitter); |
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60 | data->above = NULL; |
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61 | data->below = NULL; |
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62 | data->tiler = Tiler::Register(PNG_TILES, 48, 48, 1.0f); |
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63 | data->cell = cell; |
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64 | data->pos = cell * 48; |
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65 | data->id = id; |
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66 | data->state = PieceData::IDLE; |
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67 | } |
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68 | |
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69 | void Piece::SetCell(int2 cell) |
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70 | { |
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71 | data->cell = cell; |
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72 | } |
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73 | |
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74 | int2 Piece::GetCell() const |
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75 | { |
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76 | return data->cell; |
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77 | } |
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78 | |
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79 | void Piece::SetPos(int2 pos) |
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80 | { |
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81 | data->pos = pos; |
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82 | } |
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83 | |
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84 | int2 Piece::GetPos() const |
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85 | { |
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86 | return data->pos; |
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87 | } |
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88 | |
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89 | int Piece::GetId() const |
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90 | { |
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91 | return data->id; |
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92 | } |
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93 | |
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94 | void Piece::SetAbove(Piece *above) |
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95 | { |
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96 | Piece *old = data->above; |
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97 | |
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98 | if (above == old) |
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99 | return; |
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100 | |
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101 | if (old) |
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102 | Ticker::Unref(old); |
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103 | data->above = above; |
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104 | if (above) |
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105 | Ticker::Ref(above); |
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106 | |
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107 | if (old) |
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108 | old->SetBelow(NULL); |
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109 | if (above) |
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110 | above->SetBelow(this); |
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111 | } |
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112 | |
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113 | Piece *Piece::GetAbove() const |
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114 | { |
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115 | return data->above; |
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116 | } |
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117 | |
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118 | void Piece::SetBelow(Piece *below) |
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119 | { |
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120 | Piece *old = data->below; |
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121 | |
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122 | if (below == old) |
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123 | return; |
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124 | |
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125 | if (old) |
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126 | Ticker::Unref(old); |
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127 | data->below = below; |
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128 | if (below) |
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129 | Ticker::Ref(below); |
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130 | |
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131 | if (old) |
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132 | old->SetAbove(NULL); |
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133 | if (below) |
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134 | below->SetAbove(this); |
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135 | } |
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136 | |
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137 | Piece *Piece::GetBelow() const |
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138 | { |
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139 | return data->below; |
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140 | } |
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141 | |
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142 | int Piece::IsDead() const |
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143 | { |
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144 | return data->state == PieceData::DEAD; |
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145 | } |
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146 | |
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147 | int Piece::Blink() |
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148 | { |
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149 | switch (data->state) |
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150 | { |
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151 | case PieceData::IDLE: |
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152 | data->state = PieceData::BLINK; |
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153 | data->timer = DELAY_BLINK; |
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154 | return 1; |
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155 | default: |
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156 | return 0; |
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157 | } |
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158 | } |
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159 | |
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160 | int Piece::Pop() |
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161 | { |
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162 | switch (data->state) |
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163 | { |
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164 | case PieceData::IDLE: |
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165 | case PieceData::BLINK: |
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166 | case PieceData::GRAB: |
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167 | case PieceData::UNGRAB: |
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168 | case PieceData::MOVE: |
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169 | case PieceData::POP: |
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170 | data->state = PieceData::POP; |
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171 | data->timer = DELAY_DUH + DELAY_POP; |
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172 | return 1; |
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173 | default: |
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174 | return 0; |
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175 | } |
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176 | } |
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177 | |
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178 | int Piece::Grab(int2 dir) |
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179 | { |
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180 | switch (data->state) |
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181 | { |
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182 | case PieceData::UNGRAB: |
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183 | case PieceData::MOVE: |
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184 | /* Only allow swaps when piece is close enough to its target cell. */ |
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185 | if ((data->cell * 48 - data->pos).sqlen() > 24 * 24) |
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186 | return 0; |
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187 | /* Fall through */ |
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188 | case PieceData::IDLE: |
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189 | case PieceData::BLINK: |
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190 | case PieceData::GRAB: |
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191 | data->state = PieceData::GRAB; |
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192 | data->pos = data->pos + dir; |
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193 | return 1; |
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194 | default: |
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195 | return 0; |
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196 | } |
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197 | } |
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198 | |
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199 | int Piece::Ungrab(int2 pos) |
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200 | { |
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201 | switch (data->state) |
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202 | { |
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203 | case PieceData::IDLE: |
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204 | case PieceData::BLINK: |
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205 | case PieceData::GRAB: |
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206 | case PieceData::UNGRAB: |
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207 | case PieceData::MOVE: |
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208 | data->state = PieceData::UNGRAB; |
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209 | data->speed = 0.4f; |
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210 | data->timer = 0.0f; |
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211 | data->src = data->pos; |
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212 | data->dst = pos; |
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213 | return 1; |
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214 | default: |
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215 | return 0; |
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216 | } |
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217 | } |
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218 | |
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219 | int Piece::Move(int2 pos) |
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220 | { |
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221 | switch (data->state) |
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222 | { |
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223 | case PieceData::IDLE: |
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224 | case PieceData::BLINK: |
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225 | case PieceData::UNGRAB: |
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226 | case PieceData::MOVE: |
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227 | data->state = PieceData::MOVE; |
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228 | data->speed = 0.3f; |
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229 | data->timer = 0.0f; |
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230 | data->src = data->pos; |
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231 | data->dst = pos; |
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232 | return 1; |
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233 | case PieceData::GRAB: |
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234 | default: |
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235 | return 0; |
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236 | } |
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237 | } |
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238 | |
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239 | void Piece::TickGame(float deltams) |
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240 | { |
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241 | switch (data->state) |
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242 | { |
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243 | case PieceData::IDLE: |
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244 | break; |
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245 | case PieceData::BLINK: |
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246 | data->timer -= deltams; |
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247 | if (data->timer < 0.0f) |
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248 | data->state = PieceData::IDLE; |
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249 | break; |
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250 | case PieceData::GRAB: |
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251 | break; |
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252 | case PieceData::UNGRAB: |
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253 | case PieceData::MOVE: |
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254 | { |
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255 | data->timer += deltams; |
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256 | int2 trip = data->dst - data->src; |
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257 | float moving_time = trip.len() / data->speed; |
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258 | float t = moving_time ? data->timer / moving_time : 1.0f; |
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259 | if (t >= 1.0f) |
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260 | t = 1.0f; |
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261 | data->pos = data->src + (t * trip + 0.5f); |
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262 | /* If the piece below is blocking us, clamp our position and |
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263 | * start falling again. */ |
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264 | if (data->state == PieceData::MOVE && data->below |
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265 | && data->pos.y < data->below->data->pos.y + 48) |
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266 | { |
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267 | data->pos.y = data->below->data->pos.y + 48; |
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268 | data->src = data->pos; |
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269 | data->timer = 0.0f; |
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270 | } |
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271 | if (data->timer > moving_time + 200.0f) |
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272 | data->state = PieceData::IDLE; |
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273 | break; |
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274 | } |
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275 | case PieceData::POP: |
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276 | data->timer -= deltams; |
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277 | if (data->timer < 0.0f) |
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278 | { |
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279 | float3 pos(data->pos.x + 24, data->pos.y + 177, 5); |
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280 | int start = data->id + 10; |
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281 | int stop = data->id + 13; |
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282 | for (int id = start; id < stop; id++) |
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283 | { |
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284 | float3 vel(RandF(-0.3f, 0.3f), RandF(0.2f, 0.3f), 0.0f); |
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285 | data->emitter->AddParticle(id, pos, vel); |
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286 | } |
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287 | |
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288 | data->state = PieceData::DEAD; |
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289 | } |
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290 | break; |
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291 | case PieceData::DEAD: |
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292 | break; |
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293 | } |
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294 | Entity::TickGame(deltams); |
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295 | } |
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296 | |
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297 | void Piece::TickDraw(float deltams) |
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298 | { |
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299 | Entity::TickDraw(deltams); |
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300 | |
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301 | int id = data->id; |
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302 | int x = data->pos.x + 24; |
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303 | int y = data->pos.y + 177; |
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304 | int z = 2; |
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305 | |
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306 | /* Optional modifiers */ |
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307 | switch (data->state) |
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308 | { |
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309 | case PieceData::IDLE: |
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310 | break; |
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311 | case PieceData::BLINK: |
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312 | id = data->id + 1; |
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313 | break; |
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314 | case PieceData::GRAB: |
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315 | id = data->id + 1; |
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316 | z = 4; |
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317 | break; |
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318 | case PieceData::UNGRAB: |
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319 | if ((data->cell * 48 - data->src).sqlen() > 24 * 24) |
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320 | id = data->id + 5; |
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321 | z = 4; |
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322 | break; |
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323 | case PieceData::MOVE: |
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324 | z = 3; |
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325 | break; |
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326 | case PieceData::POP: |
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327 | { |
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328 | int off = 4 - (data->timer * 5 / DELAY_POP); |
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329 | if (off < 0) off = 0; |
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330 | if (off > 4) off = 4; |
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331 | id = data->id + 5 + off; |
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332 | break; |
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333 | } |
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334 | case PieceData::DEAD: |
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335 | break; |
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336 | } |
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337 | |
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338 | if (data->state != PieceData::DEAD) |
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339 | Scene::GetDefault()->AddTile((data->tiler << 16) | id, x, y, z, 0); |
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340 | |
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341 | if (data->state == PieceData::GRAB) |
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342 | Scene::GetDefault()->AddTile((data->tiler << 16) | 0, x, y, 5, 0); |
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343 | } |
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344 | |
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345 | Piece::~Piece() |
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346 | { |
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347 | if (data->above) |
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348 | Ticker::Unref(data->above); |
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349 | if (data->below) |
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350 | Ticker::Unref(data->below); |
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351 | Ticker::Unref(data->emitter); |
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352 | Tiler::Deregister(data->tiler); |
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353 | delete data; |
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354 | } |
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355 | |
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