1 | /********************************************************************** <BR>
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2 | This file is part of Crack dot Com's free source code release of
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3 | Golgotha. <a href="http://www.crack.com/golgotha_release"> <BR> for
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4 | information about compiling & licensing issues visit this URL</a>
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5 | <PRE> If that doesn't help, contact Jonathan Clark at
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6 | golgotha_source@usa.net (Subject should have "GOLG" in it)
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7 | ***********************************************************************/
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8 |
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9 | #include "g1_object.hh"
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10 | #include "objs/model_draw.hh"
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11 | #include "math/num_type.hh"
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12 | #include "objs/rocket.hh"
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13 | #include "tile.hh"
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14 | #include "objs/explosion1.hh"
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15 | #include "saver.hh"
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16 | #include "objs/fire_angle.hh"
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17 | #include "math/pi.hh"
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18 | #include "objs/map_piece.hh"
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19 | #include "map.hh"
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20 | #include "map_man.hh"
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21 | #include "math/angle.hh"
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22 | #include "math/trig.hh"
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23 | #include "image/image.hh"
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24 | #include "objs/smoke_trail.hh"
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25 | #include "object_definer.hh"
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26 | #include "g1_render.hh"
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27 | #include "g1_rand.hh"
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28 |
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29 | static g1_object_type shrapnel_type, explosion_type, smoke_trail_type;
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30 | void g1_rocket_init()
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31 | {
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32 | shrapnel_type = g1_get_object_type("shrapnel");
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33 | explosion_type = g1_get_object_type("explosion1");
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34 | smoke_trail_type = g1_get_object_type("smoke_trail");
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35 | }
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36 |
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37 | g1_object_definer<g1_rocket_class>
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38 | g1_rocket_def("rocket",
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39 | g1_object_definition_class::MOVABLE,
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40 | g1_rocket_init);
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41 |
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42 | g1_rocket_class::g1_rocket_class(g1_object_type id,
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43 | g1_loader_class *fp)
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44 | : g1_object_class(id,fp)
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45 | {
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46 | draw_params.setup("missile");
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47 |
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48 | if (fp && fp->check_version(G1_ROCKET_DATA_VERSION))
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49 | {
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50 | zv=fp->read_float();
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51 | speed=fp->read_float();
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52 |
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53 | fp->read_reference(who_fired_me);
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54 | fp->read_reference(track_object);
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55 | i4_warning("loaded rocket that does no damage");
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56 | fp->end_version(I4_LF);
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57 | }
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58 | else
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59 | {
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60 | zv=0;
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61 | speed=0;
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62 | }
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63 |
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64 | damage = 0;
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65 |
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66 | radar_type=G1_RADAR_WEAPON;
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67 | set_flag(AERIAL |
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68 | HIT_GROUND |
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69 | SHADOWED, 1);
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70 | }
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71 |
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72 | void g1_rocket_class::save(g1_saver_class *fp)
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73 | {
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74 | // save data associated with base classes
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75 | g1_object_class::save(fp);
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76 |
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77 | fp->start_version(G1_ROCKET_DATA_VERSION);
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78 |
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79 | fp->write_float(zv);
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80 | fp->write_float(speed);
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81 |
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82 | fp->write_reference(who_fired_me);
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83 | fp->write_reference(track_object);
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84 |
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85 | fp->end_version();
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86 | }
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87 |
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88 | void g1_rocket_class::fire_at(i4_float sx, i4_float sy, i4_float sz,
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89 | i4_float angle,
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90 | g1_map_piece_class *kill_target,
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91 | g1_map_piece_class *owner,
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92 | w32 _damage)
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93 | {
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94 | damage = _damage;
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95 |
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96 | lx=x=sx; ly=y=sy; lh=h=sz;
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97 |
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98 | i4_float x_y_dist = sqrt((kill_target->x - sx)*(kill_target->x - sx) +
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99 | (kill_target->y - sy)*(kill_target->y - sy));
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100 |
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101 |
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102 | i4_float angle_with_ground;
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103 |
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104 | if (!g1_calc_fire_angle(x_y_dist, sz, kill_target->h, g(), vo(), angle_with_ground))
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105 | angle_with_ground=i4_pi()/4;
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106 |
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107 |
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108 | speed=cos(angle_with_ground)*vo();
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109 | zv=sin(angle_with_ground)*vo();
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110 |
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111 |
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112 | ltheta=theta=angle;
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113 | pitch = lpitch = atan(-zv/speed);
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114 | player_num=owner->player_num;
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115 |
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116 | track_object = kill_target;
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117 | who_fired_me = owner;
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118 |
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119 | occupy_location();
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120 | request_think();
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121 | }
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122 |
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123 | void g1_rocket_class::fire(i4_float sx, i4_float sy, i4_float sz,
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124 | i4_angle angle,
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125 | g1_map_piece_class *owner,
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126 | w32 _damage)
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127 | {
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128 | damage = _damage;
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129 |
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130 | i4_float angle_with_ground=i4_pi()/4;
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131 |
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132 | speed=cos(angle_with_ground)*vo();
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133 | zv=sin(angle_with_ground)*vo();
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134 |
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135 | theta=angle;
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136 |
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137 | who_fired_me = owner;
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138 | player_num=owner->player_num;
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139 |
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140 | occupy_location();
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141 | request_think();
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142 | }
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143 |
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144 | void i4_normalize_angle(i4_float &angle);
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145 |
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146 |
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147 | void g1_rocket_class::think()
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148 | {
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149 | zv-=g();
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150 | pitch = atan(-zv/speed);
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151 | i4_normalize_angle(pitch);
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152 |
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153 | move(cos(theta) * speed, sin(theta) * speed, zv);
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154 | }
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155 |
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156 | void g1_rocket_class::draw(g1_draw_context_class *context)
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157 | {
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158 | g1_model_draw(this, draw_params, context);
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159 |
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160 | if (smoke_trail.valid())
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161 | smoke_trail->draw(context);
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162 | }
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163 |
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164 | i4_bool g1_rocket_class::move(i4_float x_amount,
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165 | i4_float y_amount,
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166 | i4_float z_amount)
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167 | {
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168 |
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169 | g1_smoke_trail_class *s;
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170 | if (!smoke_trail.valid())
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171 | {
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172 | s=(g1_smoke_trail_class *)g1_create_object(smoke_trail_type);
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173 | if (s)
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174 | {
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175 | s->setup(x, y, h, 0.01, 0.1, 0xffd000, 0xffffff); // orange to white
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176 | s->occupy_location();
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177 | smoke_trail=s;
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178 | }
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179 | }
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180 | else s=(g1_smoke_trail_class *)smoke_trail.get();
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181 |
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182 |
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183 | g1_object_class *hit = NULL;
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184 |
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185 | unoccupy_location();
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186 |
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187 | i4_3d_vector ray(x_amount, y_amount, z_amount);
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188 |
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189 | if (!g1_get_map()->check_non_player_collision(player_num,
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190 | i4_3d_vector(x,y,h),
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191 | ray,
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192 | hit))
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193 | {
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194 | x += x_amount;
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195 | y += y_amount;
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196 | h += z_amount;
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197 |
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198 | request_think();
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199 | occupy_location();
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200 |
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201 | if (s)
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202 | s->update_head(x,y,h);
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203 |
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204 | return i4_T;
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205 | }
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206 | else
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207 | {
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208 | if (s) // delete the smoke trail
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209 | {
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210 | s->unoccupy_location();
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211 | s->request_remove();
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212 | }
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213 |
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214 | // explode
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215 | if (hit)
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216 | {
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217 |
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218 | if (fabs(hit->h - h)<0.2)
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219 | {
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220 | hit->damage(this, damage, i4_3d_vector(x_amount,y_amount,z_amount));
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221 | g1_explosion1_class *explosion;
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222 | explosion=(g1_explosion1_class *)g1_create_object(explosion_type);
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223 |
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224 | i4_float rx,ry,rh;
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225 | rx = g1_float_rand(34) *0.2 - 0.1;
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226 | ry = g1_float_rand(10) *0.2 - 0.1;
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227 | rh = g1_float_rand(02) *0.2 - 0.1;
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228 |
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229 | explosion->setup(hit->x+rx,hit->y+ry,hit->h + rh);
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230 | x = hit->x + rx;
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231 | y = hit->y + ry;
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232 | h = hit->h + rh;
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233 | request_remove();
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234 | return i4_F;;
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235 | }
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236 |
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237 | x += x_amount;
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238 | y += y_amount;
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239 | h += z_amount;
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240 |
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241 | request_think();
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242 | occupy_location();
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243 | return i4_T;
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244 | }
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245 | else if (who_fired_me.valid())
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246 | {
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247 | g1_explosion1_class *explosion=(g1_explosion1_class *)g1_create_object(explosion_type);
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248 |
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249 | i4_float rx,ry,rh;
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250 |
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251 | rx = g1_float_rand(34) *0.2 - 0.1;
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252 | ry = g1_float_rand(10) *0.2 - 0.1;
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253 | rh = g1_float_rand(02) *0.2 - 0.1;
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254 |
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255 |
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256 | explosion->setup(lx+rx,ly+ry,lh+rh);
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257 | }
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258 |
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259 | request_remove();
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260 |
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261 | return i4_F;
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262 | }
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263 | }
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264 |
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