Designing Games with Game Maker - YoYo Games

More documents

Recommendations

Info

When you need to draw large models it is rather expensive to call all the different drawing functions again and again in every step. To avoid this you can create models. A model consists of a number of drawing primitives and shapes. Once a model is created you can draw it at different places with just one function call. Models can also be loaded from a file or saved to a file. Before giving the different functions available there is one important point: the handling of textures. As described earlier, texture are taken from sprites and backgrounds. The indices of the textures can be different at different moments. As a result models do not contain any texture information. Only when you draw a model you provide the texture. So you can only use one texture in a model. If you need more textures you must either combine them in one (and carefully deal with the texture coordinates) or you must use multiple models. The advantage of this is that you can draw the same model easily with different textures. For creating, loading, saving, and drawing models, the following functions exist: d3d_model_create() Creates a new model and returns its index. This index is used in all other functions dealing with models. d3d_model_destroy(ind) Destroys the model with the given index, freeing its memory. d3d_model_clear(ind) Clears the model with the given index, removing all its primitives. d3d_model_save(ind,fname) Saves the model to the indicated file name. d3d_model_load(ind,fname) Loads the model from the indicated file name. d3d_model_draw(ind,x,y,z,texid) Draws the model at position (x,y,z). texid is the texture that must be used. Use -1 if you do not want to use a texture. If you want to rotate or scale the model you can use the transformation routines described before. For each primitive function there is an equivalent to add it to a model. The functions have the same arguments as before except that each has a first argument the index of the model, and no texture information is provided. d3d_model_primitive_begin(ind,kind) Adds a 3D primitive to the model of the indicated kind: pr_pointlist, pr_linelist, pr_linestrip,pr_trianglelist,pr_trianglestrip or
pr_trianglefan. d3d_model_vertex(ind,x,y,z) Add vertex (x,y,z) to the model. d3d_model_vertex_color(ind,x,y,z,col,alpha) Add vertex (x,y,z) to the model, with its own color and alpha value. d3d_model_vertex_texture(ind,x,y,z,xtex,ytex) Add vertex (x,y,z) to the model with position (xtex,ytex) in the texture. d3d_model_vertex_texture_color(ind,x,y,z,xtex,ytex,col,alph a) Add vertex (x,y,z) to the model with texture and color values. d3d_model_vertex_normal(ind,x,y,z,nx,ny,nz) Add vertex (x,y,z) to the model, with normal vector (nx,ny,nz). d3d_model_vertex_normal_color(ind,x,y,z,nx,ny,nz,col,alpha) Add vertex (x,y,z) to the model, with normal vector (nx,ny,nz), and with its own color and alpha value. d3d_model_vertex_normal_texture(ind,x,y,z,nx,ny,nz,xtex,yte x) Add vertex (x,y,z) to the model, with normal vector (nx,ny,nz), with texture position. d3d_model_vertex_normal_texture_color(ind,x,y,z,nx,ny,nz,xt ex,ytex,col,alpha) Add vertex (x,y,z) to the model, with normal vector (nx,ny,nz), with texture and color values. d3d_model_primitive_end(ind) End the description of the primitive in the model. Besides primitives you can also add basic shapes to the models. Again the functions look almost the same but with a model index and without texture information: d3d_model_block(ind,x1,y1,z1,x2,y2,z2,hrepeat,vrepeat) Adds a block shape to the model. d3d_model_cylinder(ind,x1,y1,z1,x2,y2,z2,hrepeat,vrepeat,cl osed,steps) Adds a cylinder shape to the model. d3d_model_cone(ind,x1,y1,z1,x2,y2,z2,hrepeat,vrepeat,closed ,steps) Adds a cone shape to the model. d3d_model_ellipsoid(ind,x1,y1,z1,x2,y2,z2,hrepeat,vrepeat,s teps) Adds a ellipsoid shape to the model. d3d_model_wall(ind,x1,y1,z1,x2,y2,z2,hrepeat,vrepeat) Adds a wall shape to the model.
Page 1 and 2:
What is New Designing Games with Ga
Page 3 and 4:
It can now be indicated whether or
Page 5 and 6:
• You can now set the variable cu
Page 7 and 8:
Playing computer games is fun. But
Page 9 and 10:
Upgrading to the Pro Edition Game M
Page 11 and 12:
http://www.yoyogames.com/upgrade He
Page 13 and 14:
simple: There is a blue ball bounci
Page 15 and 16:
(Actually, this is what you see whe
Page 17 and 18:
Resources menu In this menu, you ca
Page 19 and 20:
When you make a game you normally s
Page 21 and 22:
To create a background resource in
Page 23 and 24:
whether this is a solid object (lik
Page 25 and 26:
Here you select the event you want
Page 27 and 28:
the keys pressed happen. Note that
Page 29 and 30:
Key release events This event is si
Page 31 and 32:
Relative. If you check this, the ne
Page 33 and 34:
object is reached. If there already
Page 35 and 36:
Transform Sprite Use this action to
Page 37 and 38:
Sleep With this action you can free
Page 39 and 40:
Check Collision This is the reverse
Page 41 and 42:
peferably only for small pieces of
Page 43 and 44:
provide the positions and the capti
Page 45 and 46:
to right. You specify the rectangle
Page 47 and 48:
You can change most of these variab
Page 49 and 50:
To add instances to the room, first
Page 51 and 52:
At the top you will see the backgro
Page 53 and 54:
When you start Game Maker in advanc
Page 55 and 56:
• Show the origin and bounding bo
Page 57 and 58:
Editing your sprites Up to now we l
Page 59 and 60:
• Scale. This command scales the
Page 61 and 62:
• Disappear. Makes the image disa
Page 63 and 64:
Once you selected the correct set o
Page 65 and 66:
• Clear. Clear the image to the l
Page 67 and 68:
Multiple normal sounds can play at
Page 69 and 70:
You can indicate a number of settin
Page 71 and 72:
When a ball hits the floor it must
Page 73 and 74:
action it lets the instance take a
Page 75 and 76:
The following additional draw actio
Page 77 and 78:
dies. The transparency slowly chang
Page 79 and 80:
Resume CD Resumes a paused CD. Chec
Page 81 and 82:
e the way you left it the last time
Page 83 and 84:
At the left top there is the curren
Page 85 and 86:
At the top there is a box labeled E
Page 87 and 88:
Letters range that contains all upp
Page 89 and 90:
top tool bar. Here you can also ind
Page 91 and 92:
You might wonder what happens when
Page 93 and 94:
Set the time line position With thi
Page 95 and 96:
As you might have noticed, parts of
Page 97 and 98:
In this form you can indicate which
Page 99 and 100:
about the game and how it was creat
Page 101 and 102:
Resolution In this tab you can set
Page 103 and 104:
Also you can set the priority of th
Page 105 and 106:
Change to change a selected file, D
Page 107 and 108:
Here you can set a number of option
Page 109 and 110:
Game Maker contains a built-in prog
Page 111 and 112:
• !: not, turns true into false a
Page 113 and 114:
} instance_create(xx,yy,ball); Addr
Page 115 and 116:
} obj[1].id.x = 12; The last statem
Page 117 and 118:
{ } repeat (5) instance_create(rand
Page 119 and 120:
} for (i=0; i
Page 121 and 122:
A function has the form of a functi
Page 123 and 124:
with (ball) { } x = random(room_wid
Page 125 and 126:
andom_set_seed(seed) Sets the seed
Page 127 and 128:
string_copy(str,index,count) Return
Page 129 and 130:
date_get_hour(date) Returns the hou
Page 131 and 132:
Generating Events Miscellaneous Var
Page 133 and 134:
Paths move_bounce_all(adv) Bounces
Page 135 and 136:
e careful how and when you apply it
Page 137 and 138:
overwritten by the new path. (See a
Page 139 and 140:
mp_grid_add_instances(id,obj,prec)
Page 141 and 142:
instance_count* Number of instances
Page 143 and 144:
When you deactivate instances they
Page 145 and 146:
As you should know, every instance
Page 147 and 148:
loading. You can also save and load
Page 149 and 150:
score The current score. lives Numb
Page 151 and 152:
ev_joystick1_button7 ev_joystick1_b
Page 153 and 154:
Here are some variables and functio
Page 155 and 156:
There is no game without interactio
Page 157 and 158:
vk_insert insert key vk_pageup page
Page 159 and 160:
You can change the way the mouse cu
Page 161 and 162:
image_index When the image has mult
Page 163 and 164:
ackground_height[0...7]* Height of
Page 165 and 166:
,xscale,yscale,rot,c1,c2,c3,c4,alph
Page 167 and 168:
ection,showback,showborder) With th
Page 169 and 170:
Fonts and text In games you sometim
Page 171 and 172:
This functionality is only availabl
Page 173 and 174:
sprite_get_texture(spr,subimg) Retu
Page 175 and 176:
draw_set_blend_mode(mode) Indicates
Page 177 and 178:
position (x,y) in the surface. This
Page 179 and 180:
change their position, and even sca
Page 181 and 182:
indicated depth to the new depth. W
Page 183 and 184:
window_set_sizeable(sizeable) Sets
Page 185 and 186:
window_default() Gives the window t
Page 187 and 188:
can also assign an instance id to t
Page 189 and 190:
Be careful when using this techniqu
Page 191 and 192:
sound_volume(index,value) Changes t
Page 193 and 194:
wave Waveform of the LFO. (0 = tria
Page 195 and 196:
accordingly. The effect is especial
Page 197 and 198:
MCI_command(str) This functions sen
Page 199 and 200:
e adapted to the scaled size of the
Page 201 and 202:
message_caption(show,str) Sets the
Page 203 and 204:
place (1-10). This can be used to d
Page 205 and 206:
sound_discard(index) Frees the audi
Page 207 and 208:
script_exists(ind) Returns whether
Page 209 and 210:
• Make sure you delete resources
Page 211 and 212:
sprite_add_from_surface(ind,id,x,y,
Page 213 and 214:
does not matter. background_create_
Page 215 and 216:
Scripts an empty path. path_reverse
Page 217 and 218:
ehavior we must define events for t
Page 219 and 220:
oom. room_tile_add(ind,back,left,to
Page 221 and 222:
fa_directory directories fa_archive
Page 223 and 224: using the file selector. Note that
Page 225 and 226: To pass certain parameter settings
Page 227 and 228: All data structures work globally i
Page 229 and 230: Lists ds_queue_size(id) Returns the
Page 231 and 232: ds_map_create() Creates a new map.
Page 233 and 234: Grids an easy mechanism for saving
Page 235 and 236: ds_grid_get_mean(id,x1,y1,x2,y2) Re
Page 237 and 238: • ef_smokeup • ef_star • ef_s
Page 239 and 240: at the beginning of the animation o
Page 241 and 242: Besides the color you can also give
Page 243 and 244: front of, or between object instanc
Page 245 and 246: • distribution indicates the dist
Page 247 and 248: settings. part_attractor_position(p
Page 249 and 250: Changers change certain particles w
Page 251 and 252: part_type_gravity(pt2,0.2,270); par
Page 253 and 254: mplay_connect_status() returns the
Page 255 and 256: calling the first routine. This id
Page 257 and 258: This functionality is only availabl
Page 259 and 260: ty_real,2,ty_real,ty_real); global.
Page 261 and 262: • When you use the 3D functionali
Page 263 and 264: Note that at the moment a new insta
Page 265 and 266: } ttt = background_get_texture(back
Page 267 and 268: Default you look along the negative
Page 269 and 270: A standard use for this is to draw
Page 271 and 272: { } d3d_transform_set_identity(); d
Page 273: d3d_light_define_direction(ind,dx,d
show all

Designing Games with Game Maker - YoYo Games

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?