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1 #include <iostream>
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2 #include <math.h>
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3 #include "SceneGraphRoot.h"
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4 #include "SGList.h"
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5 #include "SceneGraph.h"
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6 #include "TaskManager.h"
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7 #include "Func.h"
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8
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9
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10 #define FALSE 0
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11 #define TRUE !FALSE
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12 #define CHAIN_LEN 50
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13
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14 static double m = 100.0;
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15 static double k = 7000.0;
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16 static double g = 9.8;
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17 static double dt = 0.003;
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18 static double chain_width = 10;
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19 static double safe = 0.995;
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20
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21 typedef struct {
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22 double x, y, next_x, next_y;
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23 double vx, vy, next_vx, next_vy;
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24 int can_move;
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25 } CHAIN_VARS;
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26
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27 CHAIN_VARS cv[CHAIN_LEN];
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28
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29 void
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30 init_chainold_vars(CHAIN_VARS *cv) {
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31 cv->x = 0, cv->y = 0, cv->next_x = 0, cv->next_y = 0;
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32 cv->vx = 0, cv->vy = 0, cv->next_vx = 0, cv->next_vy = 0;
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33 cv->can_move = TRUE;
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34 }
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35
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36 void
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37 set_old_vector(CHAIN_VARS *cv, SceneGraphPtr sg) {
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38 sg->xyz[0] = (float)cv->next_x;
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39 sg->xyz[1] = (float)cv->next_y;
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40 sg->xyz[2] = 0.0f;
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41 }
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42
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43
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44 static void
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45 chain_old_move_ope(SceneGraphPtr node, int screen_w, int screen_h)
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46 {
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47 Pad *pad = sgroot->getController();
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48
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49 if (pad->start.isHold()) {
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50 cv[CHAIN_LEN-1].can_move = FALSE;
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51 if (pad->left.isHold()) {
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52 cv[CHAIN_LEN-1].x += -5.0;
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53 } else if (pad->right.isHold()) {
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54 cv[CHAIN_LEN-1].x += 5.0;
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55 }
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56
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57 if (pad->up.isHold()) {
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58 cv[CHAIN_LEN-1].y += -5.0;
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59 } else if (pad->down.isHold()) {
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60 cv[CHAIN_LEN-1].y += 5.0;
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61 }
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62 } else {
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63 cv[CHAIN_LEN-1].can_move = TRUE;
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64 }
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65 }
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66
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67 void
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68 chain_old_move(SceneGraphPtr sg, int w, int h)
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69 {
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70 int id = sg->id;
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71 if(id == 0) {
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72 for(int cnt = 0; cnt < 600; cnt++) {
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73 for(int i = 0; i < CHAIN_LEN; i++) {
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74 if(cv[i].can_move) {
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75 double dx = cv[i-1].x - cv[i].x;
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76 double dy = cv[i-1].y - cv[i].y;
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77 double l = sqrt(dx * dx + dy * dy);
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78 double a = k * (l - chain_width) / m;
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79 double ax = a * dx / l;
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80 double ay = a * dy / l;
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81 if(i < CHAIN_LEN - 1) {
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82 dx = cv[i+1].x - cv[i].x;
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83 dy = cv[i+1].y - cv[i].y;
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84 l = sqrt(dx * dx + dy * dy);
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85 a = k * (l - chain_width) / m;
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86 ax += a * dx / l;
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87 ay += a * dy / l;
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88 }
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89 ay += g;
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90 cv[i].vx *= safe;
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91 cv[i].vy *= safe;
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92 cv[i].next_vx = cv[i].vx + ax * dt;
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93 cv[i].next_vy = cv[i].vy + ay * dt;
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94 cv[i].next_x = cv[i].x + cv[i].vx * dt;
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95 cv[i].next_y = cv[i].y + cv[i].vy * dt;
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96 } else {
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97 cv[i].next_x = cv[i].x;
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98 cv[i].next_y = cv[i].y;
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99 }
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100 }
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101 for(int i = 0; i < CHAIN_LEN; i++) {
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102 cv[i].vx = cv[i].next_vx;
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103 cv[i].vy = cv[i].next_vy;
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104 cv[i].x = cv[i].next_x;
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105 cv[i].y = cv[i].next_y;
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106 }
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107 }
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108 // cout << id << ", " << sg->xyz[1] << endl;
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109 }
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110 set_old_vector(&cv[id], sg);
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111 int p, n;
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112 p = n = id;
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113 if(p != 0) {
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114 p--;
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115 }
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116 if(n != CHAIN_LEN - 1) {
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117 n++;
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118 }
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119 sg->angle[2-(id%2)*2]
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120 = 90 + atan((cv[p].next_y - cv[n].next_y) / (cv[p].next_x - cv[n].next_x)) * 180 / M_PI;
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121 }
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122
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123 void
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124 chain_old_collision(SceneGraphPtr sg, int w, int h, SceneGraphPtr osg)
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125 {
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126
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127 }
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128
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129 void
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130 chain_old_init(TaskManager *manager, int w, int h)
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131 {
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132 SceneGraphPtr root_old_chain, chain;
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133 CHAIN_VARS rcv;
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134
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135 sgroot->createFromXMLfile(manager,"xml_file/chain.xml");
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136
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137 root_old_chain = sgroot->createSceneGraph(CHAIN);
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138 root_old_chain->set_move_collision(chain_old_move_ope, chain_old_collision);
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139 init_chainold_vars(&rcv);
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140 rcv.next_x = w / 2;
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141 rcv.next_y = 0.0;
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142 set_old_vector(&rcv, root_old_chain);
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143
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144 for(int i = 0; i < CHAIN_LEN; i++) {
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145 chain = sgroot->createSceneGraph(CHAIN);
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146 chain->id = i;
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147 init_chainold_vars(&cv[i]);
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148 cv[i].x = 0;
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149 cv[i].y = chain_width * i;
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150 set_old_vector(&cv[i], chain);
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151 chain->angle[1] = -90 * (i % 2);
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152 chain->set_move_collision(chain_old_move, chain_old_collision);
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153
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154 root_old_chain->addChild(chain);
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155 }
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156 cv[0].can_move = FALSE;
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157
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158 sgroot->setSceneData(root_old_chain);
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159 }
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