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 | Game *game; |
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32 | int tiler; |
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33 | Int2 cell, pos, src, dst; |
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34 | int id; |
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35 | float timer; |
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36 | |
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37 | enum |
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38 | { |
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39 | IDLE, |
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40 | BLINK, |
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41 | GRAB, |
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42 | UNGRAB, |
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43 | PUSH, |
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44 | } |
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45 | state; |
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46 | }; |
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47 | |
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48 | /* |
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49 | * Public Piece class |
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50 | */ |
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51 | |
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52 | Piece::Piece(Game *game, Int2 cell, int id) |
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53 | { |
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54 | data = new PieceData(); |
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55 | data->game = game; |
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56 | Ticker::Ref(game); |
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57 | data->tiler = Tiler::Register(PNG_TILES, 48, 48, 1.0f); |
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58 | data->cell = cell; |
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59 | data->pos = cell * 48; |
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60 | data->id = id; |
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61 | data->state = PieceData::IDLE; |
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62 | } |
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63 | |
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64 | void Piece::SetCell(Int2 cell) |
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65 | { |
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66 | data->cell = cell; |
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67 | } |
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68 | |
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69 | Int2 Piece::GetPos() const |
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70 | { |
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71 | return data->pos; |
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72 | } |
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73 | |
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74 | int Piece::Blink() |
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75 | { |
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76 | switch (data->state) |
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77 | { |
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78 | case PieceData::IDLE: |
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79 | data->state = PieceData::BLINK; |
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80 | data->timer = 400.0f; /* Duration of a blink */ |
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81 | return 1; |
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82 | default: |
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83 | return 0; |
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84 | } |
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85 | } |
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86 | |
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87 | int Piece::Grab(Int2 dir) |
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88 | { |
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89 | switch (data->state) |
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90 | { |
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91 | case PieceData::UNGRAB: |
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92 | case PieceData::PUSH: |
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93 | if ((data->cell * 48 - data->pos).sqlen() > 24 * 24) |
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94 | return 0; |
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95 | /* Fall through */ |
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96 | case PieceData::IDLE: |
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97 | case PieceData::BLINK: |
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98 | case PieceData::GRAB: |
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99 | data->state = PieceData::GRAB; |
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100 | data->pos = data->pos + dir; |
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101 | return 1; |
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102 | default: |
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103 | return 0; |
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104 | } |
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105 | } |
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106 | |
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107 | int Piece::Ungrab() |
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108 | { |
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109 | switch (data->state) |
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110 | { |
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111 | case PieceData::GRAB: |
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112 | data->state = PieceData::UNGRAB; |
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113 | data->timer = 0.0f; |
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114 | data->src = data->pos; |
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115 | data->dst = data->cell * 48; |
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116 | return 1; |
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117 | default: |
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118 | return 0; |
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119 | } |
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120 | } |
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121 | |
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122 | int Piece::Goto(Int2 pos) |
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123 | { |
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124 | switch (data->state) |
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125 | { |
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126 | case PieceData::IDLE: |
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127 | case PieceData::BLINK: |
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128 | case PieceData::UNGRAB: |
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129 | case PieceData::PUSH: |
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130 | data->state = PieceData::PUSH; |
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131 | data->timer = 0.0f; |
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132 | data->src = data->pos; |
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133 | data->dst = pos; |
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134 | return 1; |
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135 | case PieceData::GRAB: |
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136 | default: |
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137 | return 0; |
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138 | } |
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139 | } |
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140 | |
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141 | void Piece::TickGame(float deltams) |
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142 | { |
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143 | switch (data->state) |
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144 | { |
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145 | case PieceData::IDLE: |
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146 | break; |
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147 | case PieceData::BLINK: |
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148 | data->timer -= deltams; |
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149 | if (data->timer < 0.0f) |
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150 | data->state = PieceData::IDLE; |
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151 | break; |
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152 | case PieceData::GRAB: |
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153 | break; |
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154 | case PieceData::UNGRAB: |
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155 | case PieceData::PUSH: |
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156 | data->timer += deltams; |
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157 | Int2 trip = data->dst - data->src; |
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158 | float moving_time = trip.len() / 0.3f; /* Moving speed */ |
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159 | float t = moving_time ? data->timer / moving_time : 1.0f; |
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160 | if (t >= 1.0f) |
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161 | t = 1.0f; |
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162 | if (data->timer > moving_time + 200.0f) |
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163 | data->state = PieceData::IDLE; |
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164 | data->pos = data->src + (t * trip + 0.5f); |
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165 | break; |
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166 | } |
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167 | Entity::TickGame(deltams); |
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168 | } |
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169 | |
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170 | void Piece::TickDraw(float deltams) |
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171 | { |
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172 | Entity::TickDraw(deltams); |
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173 | |
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174 | int id = data->id; |
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175 | int x = data->pos.x + 24; |
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176 | int y = data->pos.y + 177; |
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177 | int z = 2; |
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178 | |
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179 | /* Optional modifiers */ |
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180 | switch (data->state) |
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181 | { |
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182 | case PieceData::IDLE: |
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183 | break; |
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184 | case PieceData::BLINK: |
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185 | id = data->id + 1; |
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186 | break; |
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187 | case PieceData::GRAB: |
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188 | id = data->id + 1; |
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189 | z = 4; |
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190 | break; |
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191 | case PieceData::UNGRAB: |
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192 | if ((data->cell * 48 - data->src).sqlen() > 24 * 24) |
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193 | id = data->id + 2; |
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194 | z = 4; |
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195 | break; |
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196 | case PieceData::PUSH: |
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197 | z = 3; |
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198 | break; |
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199 | } |
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200 | |
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201 | data->game->GetScene()->AddTile((data->tiler << 16) | id, x, y, z, 0); |
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202 | |
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203 | if (data->state == PieceData::GRAB) |
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204 | data->game->GetScene()->AddTile((data->tiler << 16) | 0, x, y, z, 0); |
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205 | } |
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206 | |
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207 | Piece::~Piece() |
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208 | { |
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209 | Ticker::Unref(data->game); |
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210 | Tiler::Deregister(data->tiler); |
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211 | delete data; |
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212 | } |
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213 | |
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