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Rev | Author | Line No. | Line |
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1162 | tavani | 1 | /* |
1349 | giacomo | 2 | * Project: S.Ha.R.K. |
1162 | tavani | 3 | * |
4 | * Coordinators: Giorgio Buttazzo <giorgio@sssup.it> |
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5 | * |
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6 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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7 | * |
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8 | * http://www.sssup.it |
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9 | * http://retis.sssup.it |
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10 | * http://hartik.sssup.it |
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11 | */ |
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12 | |||
13 | #include "asteroid.h" |
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14 | |||
15 | PID pid_RC; |
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16 | int nrock; |
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17 | int kill_rock; |
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18 | rock_pos rocks[ROCK_NMAX]; |
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19 | |||
20 | void draw_rock(int x, int y, int r, int c) |
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21 | { |
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22 | sem_wait(&mx_grf); |
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23 | grx_disc(x, y, r, c); |
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24 | sem_post(&mx_grf); |
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25 | } |
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26 | |||
27 | TASK rock(rock_ini* ri) |
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28 | { |
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29 | int x, y, r; /* rock graphic position */ |
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30 | int ox, oy; /* rock old position */ |
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31 | int x0, y0; /* rock initial position */ |
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32 | float vx, vy; /* rock speed */ |
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33 | float vxo, vyo; /* rock initial speed */ |
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34 | float ty, tx; |
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35 | float dt; |
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36 | float rand_ang; |
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37 | int rand_side; |
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38 | int ab, ax, ay, i, l; |
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39 | |||
40 | x = y = x0 = y0 = ox = oy = vx = vy = ab = 0; |
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41 | |||
42 | i = ri->i; |
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43 | r = ri->r; |
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44 | |||
45 | rand_ang = ((rand()%120) - 60) * PI / 180.; |
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46 | |||
47 | sem_wait(&mx_st_scr); |
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48 | l = score / 50; |
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49 | sem_post(&mx_st_scr); |
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50 | |||
51 | sem_wait(&mx_mat); |
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52 | vxo = - (ROCK_VEL + l) * sin(rand_ang); |
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53 | vyo = - (ROCK_VEL + l) * cos(rand_ang); |
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54 | sem_post(&mx_mat); |
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55 | |||
56 | #ifdef ASTRO_MOVE |
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57 | rand_side = rand()%4; |
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58 | #else |
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59 | rand_side = 1; |
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60 | #endif |
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61 | |||
62 | if (rand_side == 0) { // Bottom |
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63 | vx = vxo; |
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64 | vy = vyo; |
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65 | } |
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66 | if (rand_side == 1) { // Top |
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67 | vx = -vxo; |
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68 | vy = -vyo; |
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69 | } |
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70 | if (rand_side == 2) { // Right |
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71 | vx = vyo; |
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72 | vy = -vxo; |
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73 | } |
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74 | if (rand_side == 3) { // Left |
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75 | vx = -vyo; |
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76 | vy = vxo; |
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77 | } |
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78 | |||
79 | if ( (ri->x == 0) && (ri->y == 0) ) { |
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80 | if (rand_side < 2) { // Bottom or Top |
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81 | x = ox = x0 = GB_XMIN + (GB_XMAX-GB_XMIN)/4 + (rand()%((GB_XMAX-GB_XMIN)/2)); |
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82 | if (rand_side == 0) { // Bottom |
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83 | y = oy = y0 = GB_YMAX - (r+1); |
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84 | } |
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85 | if (rand_side == 1) { // Top |
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86 | y = oy = y0 = GB_YMIN + (r+1); |
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87 | } |
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88 | } else { |
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89 | y = oy = y0 = GB_YMIN + (GB_YMAX-GB_YMIN)/4 + (rand()%((GB_YMAX-GB_YMIN)/2)); |
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90 | if (rand_side == 2) { // Right |
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91 | x = ox = x0 = GB_XMAX - (r+1); |
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92 | } |
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93 | if (rand_side == 3) { // Left |
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94 | x = ox = x0 = GB_XMIN + (r+1); |
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95 | } |
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96 | } |
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97 | } else { |
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98 | x = ox = x0 = ri->x; |
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99 | y = oy = y0 = ri->y; |
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100 | } |
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101 | |||
102 | sem_wait(&mx_rk); |
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103 | rocks[i].x = x; |
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104 | rocks[i].y = y; |
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105 | rocks[i].r = r; |
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106 | sem_post(&mx_rk); |
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107 | |||
108 | tx = 0; |
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109 | ty = 0; |
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110 | dt = ((float)ROCK_PERIOD)/100000; |
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111 | |||
112 | while (1) { |
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113 | y = y0 + vy * ty; |
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114 | x = x0 + vx * tx; |
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115 | |||
116 | sem_wait(&mx_rk); |
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117 | rocks[i].x = x; |
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118 | rocks[i].y = y; |
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119 | r = rocks[i].r; |
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120 | sem_post(&mx_rk); |
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121 | |||
122 | draw_rock(ox, oy, r, RGB_BLACK); |
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123 | |||
124 | if ((kill_rock) || (crash)){ |
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125 | nrock--; |
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126 | sem_wait(&mx_rk); |
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127 | rocks[i].pid = NIL; |
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128 | sem_post(&mx_rk); |
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129 | return 0; |
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130 | } |
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131 | |||
132 | ox = x; |
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133 | oy = y; |
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134 | |||
135 | sem_wait(&mx_xy); |
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136 | ax = astro_x; |
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137 | ay = astro_y; |
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138 | sem_post(&mx_xy); |
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139 | |||
140 | if (dist_xy(x, y, ax, ay) < (ASTRO_RADIUS/2+r)) { |
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141 | if (!ab) { |
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142 | sem_wait(&mx_st_nrg); |
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143 | energy -= ENERGY_GOT; |
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144 | sem_post(&mx_st_nrg); |
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145 | ab = 1; |
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146 | } |
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147 | } else |
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148 | ab = 0; |
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149 | |||
150 | sem_wait(&mx_xy); |
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151 | if (dist_xy(x, y, astro_x, astro_y) < (ASTRO_RADIUS+r)/2) crash = 1; |
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152 | sem_post(&mx_xy); |
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153 | |||
154 | #ifdef ASTRO_MOVE |
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155 | if (x <= GB_XMIN + r) { |
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156 | x0 = x = GB_XMAX - (r+1); |
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157 | y0 = y; |
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158 | tx = ty = 0; |
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159 | } |
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160 | if (x >= GB_XMAX - r) { |
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161 | x0 = x = GB_XMIN + (r+1); |
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162 | y0 = y; |
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163 | tx = ty = 0; |
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164 | } |
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165 | if (y <= GB_YMIN + r) { |
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166 | x0 = x; |
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167 | y0 = y = GB_YMAX - (r+1); |
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168 | tx = ty = 0; |
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169 | } |
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170 | if (y >= GB_YMAX - r) { |
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171 | x0 = x; |
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172 | y0 = y = GB_YMIN + (r+1); |
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173 | tx = ty = 0; |
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174 | } |
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175 | #else |
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176 | if ( (x <= GB_XMIN + r) || (x >= GB_XMAX - r) || (y >= GB_YMAX - 2*r) ) { |
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177 | if (y >= GB_YMAX - 2*r) { |
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178 | sem_wait(&mx_st_nrg); |
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179 | energy -= ENERGY_GOT; |
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180 | sem_post(&mx_st_nrg); |
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181 | } |
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182 | nrock--; |
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183 | sem_wait(&mx_rk); |
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184 | rocks[i].pid = NIL; |
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185 | sem_post(&mx_rk); |
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186 | return 0; |
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187 | } |
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188 | #endif |
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189 | draw_rock(ox, oy, r, RGB_YELLOW); |
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190 | |||
191 | ty += dt; |
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192 | tx += dt; |
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193 | |||
194 | task_endcycle(); |
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195 | } |
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196 | } |
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197 | |||
198 | void rock_create(rock_ini* ri) |
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199 | { |
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200 | SOFT_TASK_MODEL mp; |
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201 | PID pid; |
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202 | int i; |
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203 | |||
204 | soft_task_default_model(mp); |
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205 | soft_task_def_ctrl_jet(mp); |
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206 | soft_task_def_group(mp, ROCK_GROUP); |
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207 | soft_task_def_met(mp, ROCK_WCET); |
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208 | soft_task_def_period(mp,ROCK_PERIOD); |
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209 | soft_task_def_usemath(mp); |
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210 | i = -1; |
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211 | do { |
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212 | i++; |
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213 | sem_wait(&mx_rk); |
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214 | pid = rocks[i].pid; |
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215 | sem_post(&mx_rk); |
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216 | } while (pid != NIL); |
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217 | ri->i = i; |
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218 | soft_task_def_arg(mp, (void *)ri); |
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219 | pid = task_create("Rock", rock, &mp, NULL); |
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220 | |||
221 | if (pid != NIL) { |
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222 | sem_wait(&mx_rk); |
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223 | rocks[i].pid = pid; |
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224 | sem_post(&mx_rk); |
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225 | task_activate(pid); |
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226 | nrock++; |
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227 | } |
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228 | } |
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229 | |||
230 | TASK rock_creator() |
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231 | { |
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232 | while (1) { |
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233 | sem_wait(&mx_rn); |
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234 | if (rock_new.i == 0) { |
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235 | rock_create(&rock_new); |
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236 | rock_new.i = -1; |
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237 | } |
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238 | sem_post(&mx_rn); |
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239 | |||
240 | if ((nrock < ROCK_NMAX/2) && (!kill_rock) && (!crash)) { |
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241 | if ((rand()%ROCK_NMAX) > nrock) { |
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242 | rock_new.r = ROCK_RADIUS_I; |
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243 | rock_new.x = rock_new.y = 0; |
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244 | rock_create(&rock_new); |
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245 | } |
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246 | } |
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247 | task_endcycle(); |
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248 | } |
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249 | } |
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250 | |||
251 | void reset_rock() |
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252 | { |
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253 | kill_rock = 1; |
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254 | } |
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255 | |||
256 | void start_rock() |
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257 | { |
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258 | kill_rock = 0; |
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259 | } |
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260 | |||
261 | void create_rock_task() |
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262 | { |
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263 | SOFT_TASK_MODEL ms; |
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264 | |||
265 | soft_task_default_model(ms); |
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266 | soft_task_def_ctrl_jet(ms); |
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267 | soft_task_def_met(ms, ROCK_WCET); |
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268 | soft_task_def_period(ms,ROCK_PERIOD*10); |
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269 | soft_task_def_usemath(ms); |
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270 | pid_RC = task_create("RockCreator", rock_creator, &ms, NULL); |
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271 | if (pid_RC == NIL) { |
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1376 | giacomo | 272 | sys_shutdown_message("Could not create task <RockCreator>\n"); |
1392 | giacomo | 273 | sys_end(); |
1376 | giacomo | 274 | return; |
1162 | tavani | 275 | } else |
276 | task_activate(pid_RC); |
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277 | } |
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278 | |||
279 | void init_rock() |
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280 | { |
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281 | int i; |
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282 | |||
283 | nrock = 0; |
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284 | kill_rock = 1; |
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285 | for ( i=0; i<ROCK_NMAX; i++ ) rocks[i].pid = NIL; |
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286 | |||
287 | create_rock_task(); |
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288 | } |
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289 |