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Error with pixels

[4 Replies]
- 27-Feb-2012 04:18 AM
- Forum: Android Processing
Trying to build a platform game for android using colour recogniser but when I run it on android it gives an error.
2. PImage bg;
4. //////////character movement/////////
5. float x;
6. float y;
8. float speedx;
9. float speedy;
10. float gravity;
12. boolean startJump=false;
14. boolean moveLeft=true;
15. boolean moveRight=true;
16. boolean moveUp=true;
18. //////////color sample/////////
19. color[] cU=new color[3];
20. color[] cD=new color[3];
21. color[] cL=new color[3];
22. color[] cR=new color[3];
24. color C;
26. void setup() {
27. orientation(PORTRAIT);
28. size(600, 700);
29. bg=loadImage("map.png");
31. //////////character movement////////
32. x=30;
33. y=550;
34. speedx=1;
35. speedy=4;
36. gravity=3;
38. //////////color sample/////////
39. C=bg.pixels[(bg.width*5)+(5)];
40. }
43. void draw() {
44. background(0);
45. image(bg,0, 0);
47. //////////character movement/////////
48. noStroke();
49. fill(0, 255, 0);
50. rect(x, y, 18, 18);
51. y+=gravity;
53. if (keyPressed ) {
54. if (keyCode==LEFT && moveLeft==true) {
55. x-=speedx;
56. }
57. if(keyCode==RIGHT && moveRight==true) {
58. x+=speedx;
59. }
60. if (keyCode==UP && moveUp==true) {
61. startJump=true;
62. }
63. }
64. if (startJump==true) {
65. y-=speedy;
66. }
68. //////////color sample/////////
69. for (int lop=0;lop<3;lop++) {
70. ////selecting the color that box touches
71. cU[lop]=bg.pixels[((int)bg.width*(int)y-5)+((int)x+(6*lop))];
72. cD[lop]=bg.pixels[((int)bg.width*((int)y+22))+((int)x+(6*lop))];
74. cL[lop]=bg.pixels[((int)bg.width*((int)y+(6*lop)))+((int)x-5)];
75. cR[lop]=bg.pixels[((int)bg.width*((int)y+(6*lop)))+((int)x+25)];
77. if (cD[lop]==C) {
78. gravity=0;
79. }
80. else {
81. gravity=2;
82. }
83. if (cU[lop]==C) {
84. startJump=false;
85. moveUp=false;
86. }else
87. {
88. moveUp=true;
89. }
90. if (cL[lop]==C) {
91. moveLeft=false;
92. }
93. else {
94. moveLeft=true;
95. }
96. if (cR[lop]==C) {
97. moveRight=false;
98. }
99. else {
100. moveRight=true;
101. }
102. }
104. }

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